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Thank you for choosing our product.
Please read this Owner’s Manual carefully before operation and
retain it for future reference.
Model:
Owner's Manual
Original Instructions
Local air conditioner
Content
Operation Notices
The Refrigerant
........................................................................................................1
Safety Warning ........................................................................................................ 2
Operation Environment ............................................................................................3
Part's Name .............................................................................................................4
Operation Guide
Operation Introduction for Control Panel .................................................................5
Using the remote controller .....................................................................................7
Buttons on Remote Controller .................................................................................8
Introduction for Icons on Display Screen .................................................................8
Introduction for Buttons on Remote Controller .........................................................9
Function Introduction for Combination Buttons .....................................................
.
12
Operation Guide ....................................................................................................
.
13
Replacement of Batteries in Remote Controller .....................................................
.
13
Maintenance
Clean and Maintenance.........................................................................................14
Malfunction
Malfunction analysis ..............................................................................................16
Installation Notice
Installation Precaution ...........................................................................................19
Preparation before Installation ...............................................................................20
Installation
Install Power cord Hooks.......................................................................................21
Removing Collected Water ...................................................................................22
Installation of Heat Discharge Pipe.......................................................................24
Disassembly of Heat Discharge Pipe....................................................................39
Attached Sheet
Operation Test .......................................................................................................43
Electric Schematic Diagram...................................................................................44
Specialist’s Manual
................................................................................................45
R290: 3
This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Frequency band(s) in which the radio equipment operates
2400MHz-2483.5MHz
Maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment
operates
20dBm
This marking indicates that this product should not be disposed with other household wastes
throughout the EU. To prevent possible harm to the environment or human health from un-
controlled waste disposal, recycle it responsibly to promote the sustainable reuse of mate-
rial resources. To return your used device, please use the return and collection systems or
contact the retailer where the product was purchased. They can take this product for envi-
ronmental safe recycling.
Explanation of Symbols
Exception Clauses


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

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
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

DANGER
WARNING
CAUTION
NOTICE
WARNING
To realize the function of the air conditioner unit, a special refrigerant circulates in
the system. The used refrigerant is the fluoride R290, which is specially cleaned.
The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion
under certain conditions.
Compared to common refrigerants, R290 is a nonpolluting refrigerant with no harm
to the ozonosphere. The influence upon the greenhouse effect is also lower. R290
has got very good thermodynamic features which lead to a really high energy
efficiency. The units therefore need a less filling.
Please refer to the nameplate for the charging quantity of R290.
Appliance filled with flammable gas R290.
Before install and use the appliance, read the owner’s manual first.
Before install the appliance, read the installation manual first.
Before repair the appliance, read the service manual first.
1
Appliance filled with flammable gas R290.
Appliance shall be installed, operated and stored in a room with a floor area larger
than 15 m
2
.
The appliance shall be stored in a room without continuously operating ignition sources .
(for example: open flames, an operating gas appliance or an operating electric heater.
)
The appliance shall be stored in a well-ventilated area where the room size corresponds
to the room area as specified for operation.
The appliance shall be stored so as to prevent mechanical damage from occurring.
Ducts connected to an appliance shall not contain an ignition source.
Keep any required ventilation openings clear of obstruction.
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
Servicing shall be performed only as recommended by the manufacturer.
Should repair be necessary, contact your nearest aut
horized Service Centre.
Any repairs carried out by unqualified personnel may be dangerous.
Compliance with national gas regulations shall be observed.
Read specialist’s manual.
2
Safety Warning
 
 
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 
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 

 
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0 
 
 
 
 
 
 
 q
 
 


 


 





 

Do not through sundries into the air duct. If there are sundries get
Do not use an extension cord.
into the air duct, please contact the professionals to deal with it.
Safety Warning
Operation Environment
:egnar erutarepmet eht nihtiw detarepo eb tsum renoitidnoc ria ehT
16°C ~ 35°C.
The appliance is for indoor use only.
The appliance must be positioned so that the plug is accessible.
This air conditioner can only be used for family, not for
commercial industry.
Reserved space around the air c
at least.
 Do not operate the air conditioner at humid environment.
Please keep air inlet and air outlet clean, no obstacles.
 Avoid direct sunshine.


3
During operation, close doors and windows to improve cooling effect.
Prohibit inclining or turning over the air conditioner. If there’s abnor-
mity, please disconnect power immediately and contact dealer.
Please put the air conditioner at smooth and flat ground for operation
to avoid noise and vibration.
This air conditioner is equipped with castors. Castors should slide
at smooth and flat ground.

1
2
Part's Name


NOTICE:












Dual-8 nixie tube
Cool mode indicator
Wifi indicator
Dry mode indicator
Swing button
Fan speed indicator Fan button
Wifi button
ON/OFF button
1
2
+ / - button
Swing indicator
Fan mode
indicator
Operation of control panel
Under ON status, dual-8 nixie tube on control panel will display set temperature
under cooling mode and Heating mode (Cool&Heat Unit only), while it won’t display
under other modes.
ON/OFF button
Pressing this button can turn on or turn off the air conditioner.
+ / - button
Under cooling or heating mode, press “+” or “-” button to increase or decrease set
temperature by
1°C(°F). Set temperature range is 16°C~30°C Under auto, dry or
fan mode, this button is invalid.
NOTICE:
that, you can operate the air conditioner by the control panel.
After putting through the power, the air conditioner will give out a sound. After
Under ON status, after each pressing of the button on control panel, the air
Heat mode indicator
(Cool&Heat Unit only)
Mode button
Operation Introduction for Control Panel
Name of control panel
conditioner will give out a sound. Meanwhile, corresponding indicator on control
panel will be bright.
Under OFF status, dual-8 nixie tube on control panel won’t display.
Operation Introduction for Control Panel
3
Mode button
Dry
FanHeat
(Cool&Heat Unit only)
medium speed
high speed
4
Fan button
Press this button and the fan speed will circulate as:
low speed
auto fan
Press this button and the mode will circulate according to below sequence:
Cool
Cool: Under this mode, cooling mode indicator is bright. Dual-8 nixie tube displays
set temperature. Temperature setting range is 16
°C
~30
°C
Dry: Under this mode, drying mode indicator is bright. Dual-8 nixie tube won’t
display.
Fan: Under this mode, the air conditioner only blow fan. Fan indicator is bright.
Dual-8 nixie tube won’t display.
Heat Cool&Heat Unit only : Under this mode, heating mode indicator is bright.
Dual-8 nixie tube displays set temperature. Temperature
setting range is 16°C~30°C.
5
Wifi
Press " WiFi " button to turn on or turn off WiFi function. When WiFi function is
turned on, the WiFi indicator will be displayed.
Press and hold the button for 10s to reset WIFI function.
6
Swing
Press this button , horizontal louver of air conditioner will swing up&down
automatically.single press it to switchover between on and off.
How to use the remote controller






CAUTION:











Using the remote controller






Buttons on remote controller
Introduction for icons on display screen




















ć

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



























Introduction for buttons on remote controller
Note:






 






1
2




3



4




   

 




 




Introduction for buttons on remote controller

6

8


7




9















  

5














Note:
 
 


Introduction for buttons on remote controller

12






13















14





 
WiFi
WiFi
WiFi


10




11


Function introduction for combination buttons
Combination of "" and " " buttons: About lock


Combination of "MODE" and " " buttons:
About switch between Fahrenheit and centigrade

ć̧





Combination of "TEMP" and "CLOCK" buttons:
About Energy-saving Function




ć
̧
Combination of "TEMP" and "CLOCK" buttons:
About 8
ć
Heating Function

ć

15









Introduction for buttons on remote controller
I FEEL Function












1.


2. 

3. 

4. 

5. 
Operation guide
Replacement of batteries in remote controller
 

 


 
NOTICE
 

 



 
 

 





1

Clean and Maintenance
WARNING:
 

 

 

 


Clean outer case and grille
Clean outer case:



Clean grille:




Remove the filter
Press the clasp as shown in the fig, and then remove the filter 1;
Pull out the filters 2.

clasp
filter 1
Clean and Maintenance
Clean heat discharge pipe



Checking before use-season
 
 
 
 
 
Checking after use-season
 
 



 
Long-time storage


 

 
 
Notice for recovery
 

 




  











 
 


 

 

 


 



 

 
 

 

 
 





 
 


 





 
 




 


Malfunction analysis
Is there malfunction for the
circuit?
  



 

 


 


 

 

 
 

 

 
 


 



 












 

 




 







 

 




Malfunction analysis
indoor temperature increase
set temperature?

Malfunction code
Troubleshooting
F0
Please contact qualified professionals for service.
F1
Please contact qualified professionals for service.
F2
Please contact qualified professionals for service.
F4
Please contact qualified professionals for service.
1.Check if the unit is under high-temperature
E8
2. Check if the evaporator and condenser are
H3
3. If the malfunction still occur, please contact
1. Pour out the water inside chassis.
H8
2. If "H8" still exits, please contact professional
person to maintain the unit.
ERROR
CODE
and high-humidity environment; if ambient
temperature is too high, power off the unit and
then energize it for operation after the ambient
temperature drops to 35below.
blocked by some objects; if yes, take away the
objects, power off the unit and then energize
it for operation.
our after-sales service center.


          



WARNING
Malfunction analysis
Installation Precaution
WARNING:
 
 
 

Selection of installation location
Basic requirement




 
 
 
 
 
Requirement of air conditioner
 

 

 
 
 
 


 
 

 
 


 

 

 

4.The appliance shall not be installed in the laundry.
Requirements for electric connection
Safety precaution
Power cord hooks
Optional 1
Joint A
Heat discharge pipe
Drain connector
Screws
Remote control
User's manual
Battery
(AAA 1.5V)
Preparation before Installation
NOTICE: Check if the accessories are available before installation.
Accessory list
20
Optional 2
Insect guard net
Bracket Sponge A Sponge B
The appliance shall be installed in accordance with national wiring regulations.
To be in compliance with IEC 61000-3-11, impedance value of power-supply system
connected to product must be less than or equal to the allowable maximum value
of |Zsys| in the following sheet:
10.
11.
JointB Joint C
Joint B Joint C

0.13
Extension panel
Adjustment panel
Window panel
Exhaust cover
power cord hooks
screws
Guge
Install Power cord Hooks
Assemble the power cord hooks at the back of the unit with screws (the direction of
power cord hooks is as shown in following fig).
direction of power cord hooks is upward
direction of power cord hooks is downward
21
Tools needed for installation
Cross screwdriver Straight screwdriver Saw
Scissors Pencil
Optional 3
Joint D Joint E Joint F Joint G Plastic Cover
22
rainage port
In Cool, Dry or Heat mode operating, the condensation water will be drained to
the chassis.
When the chassis is full with water, the buzzer will give out 8 sounds and "H8" is
displayed to remind user to discharge water, the unit will turned off 2min latter,
and all buttons are invalid.
To empty the chassis, please follow the instructions bellow.
. Turn the unit off and unplug from the electrical outlet.
. Use a small pan or move the unit to a suitable place to drain the water.
. Remove the pre-installed drain cap from the unit.
. Drain the water into the small pan or a suitable place.
. Once draining is complete,re-install drain cap.
. Press ON/OFF button to restart the unit.6
Removing Collected Water
There are 2 ways to remove collected water:
Use the drainage option from the lower hole.
 Wind the power cord around the .
2
1.
2.
3. Insert the drainage hose into
drain connector.
Removing Collected Water
Use the continuous drainage option from the middle hole
Remove the continuous drain cap 1 by turning it counter clockwise then remove
the rubber stopper 2 from the spout.
Screw the drain connector to(included
in the package) the spout by turning
clockwise.
NOTICE:
Water can be automatically emptied into a floor drain by attaching 14mm inner
diameter hose (not included).
ATTENTION:
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correct correct
correct
wrong
24
The length of the heat discharge pipe is less than 1m. It is recommended to
use it with shortest length.
When installing,heat discharge pipe should be as flat as possible. Don’t prolong
the pipe or connect it with other heat discharge pipe.
Installation of Heat Discharge Pipe
Note of Installingheat discharge pipe
25
should not be over 130cm from floor).
would easily cause malfunction.)
Installation of Heat Discharge Pipe
2. Rotate joint A and joint B+C into the two ends of heat discharge pipe.
Joint A
Joint C
Joint B
Joint B+C
Heat discharge pipe
3. Insert joint A of heat
discharge pipe (the
side with "TOP" is
upwards) into the
groove until you
hear a sound.
4. Lead the exhaust hose outdoors.
Groove
Casp
The side with "TOP" is upwards
26
1. Connect joint B to joint C .
Optional 1: Installation in a double window
Installation of Heat Discharge Pipe
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Sponge A
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Installation of Heat Discharge Pipe
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Installation of Heat Discharge Pipe
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Installation of Heat Discharge Pipe
8. Rotate joint A and joint B+C into the two ends of heat discharge pipe.
Clockwise
Anti-clockwise
Joint A
Heat discharge pipe
9. Insert joint A of heat
discharge pipe (the
side with "TOP" is
upwards) into the
groove until you
hear a sound.
Groove
Clasp
Joint B+C
The side with "TOP" is upwards
Slide and open the exhaust cover on the
window panel, and attach the window
adapter.
10.
30
7. Connect joint B to joint C .
Installation of Heat Discharge Pipe
Joint C
Joint B
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Installation of Heat Discharge Pipe
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Installation of Heat Discharge Pipe
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Installation of Heat Discharge Pipe
8. Rotate joint A and joint B+C into the two ends of heat discharge pipe.
Clockwise
Anti-clockwise
Joint A
Heat discharge pipe
9. Insert joint A of heat
discharge pipe (the
side with "TOP" is
upwards) into the
groove until you
hear a sound.
Groove
Clasp
Joint B+C
The side with "TOP" is upwards
Slide and open the exhaust cover on the
window panel, and attach the window
adapter.
10.
34
7.
Installation of Heat Discharge Pipe
Connect joint B to joint C .
Joint C
Joint B
Optional 3: Installation in WKH window
1.
Rotate joint A and joint D into the two ends of heat discharge pipe.
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2. Insert joint A of heat
discharge pipe (the
side with "TOP" is
upwards) into the
groove until you
hear a sound.
3. 
roove
lasp
he side with "TOP" is upwards
3
oint A
oint D
eat discharge pipe
oint
Installation of Heat Discharge Pipe
1. Rotate joint A and joint D into the two ends of heat discharge pipe.
3. Insert the joint E into the wall, fix it with screws and then rotate the joint D into
36
2. Insert joint A of heat
discharge pipe (the
joint E.
side with "TOP" is
upwards) into the
groove until you
hear a sound.
Groove
Wall
Joint E
Joint D
Screw
Heat discharge pipe
Clasp
The side with "TOP" is upwards
Joint A
Joint D
Heat discharge pipe
Optional 3-2:
Installation in the wall
Installation of Heat Discharge Pipe
37
1. Rotate joint A into the ends of heat discharge pipe.
2. If the window is immovable, cut a hole to install joint F and joint G tightly.
3. Install the other side of heat discharge pipe clockwise into joint F.
Joint F
Joint G
Cut
Inside
Outside
Joint A
Heat discharge pipe
Optional 3-3:
Installation in immovable window
Installation of Heat Discharge Pipe
38
4. Insert joint A of heat discharge pipe (the side with "TOP" is upwards) into the
groove until you hear a sound.
Groove
Clasp
the side with "TOP" is upwards
Installation of Heat Discharge Pipe
2.
1.
Remove joint B+C from outdoors.
Remove joint A:
Press the clasp and lift joint A upwards to remove it.
Upwards
Clasp
Disassemble
Joint A
39
Joint B+C
Disassembly of Heat Discharge Pipe
Optional 1: Disassemble for installation in double window
1.
Remove joint A:
Press the clasp and lift joint A upwards to remove it.
Upwards
Clasp
Disassemble
Joint A
40
2. Remove the window adapter.
Pull out and remove the window
adapter by pushing down two
“PUSH” markings, and slide and
close the exhaust cover in the
window panel. (Optional)
"PUSH"
"PUSH"
Optional 2: Disassemble for installation in sash window
Disassembly of Heat Discharge Pipe
2. Remove joint D:
remove joint D from joint E.
1. Remove joint A:
Press the clasp and lift joint A upwards to
remove it.
Upwards
Clasp
Disassemble
Joint A
Joint D
Joint E
41
Optional 3-1:
Disassembly for installation in window
Optional 3-2: Disassembly for installation in the wall
1. Remove joint A:
2. Remove joint D:
Press the clasp and lift joint A upwards to remove it.
remove joint D from joint E.
Upwards
Clasp
Disassemble
Joint A
clockwise
Disassembly of Heat Discharge Pipe
42
2. Remove the heat discharge pipe from the joint F.
Optional 3-3: Disassembly for installation in immovable window
1. Remove joint A:
Press the clasp and lift joint A upwards to remove it.
3. When heat discharge pipe is removed, Install the plastic cover into joint D in
case of the insect into the house.
Upwards
Clasp
Disassemble
Joint A
Disassembly of Heat Discharge Pipe
4
Operation Test
 Put through the power supply and then press ON/OFF button on remote contro-
ller to start the unit.
 Press mode button to select auto, cooling, drying, fan or heating function, and
then check if the unit operates normally.
 If ambient temperature is below 16°C, the unit can't operate in cooling mode.
3. When heat discharge pipe is removed, Install the plastic cover into joint F in
case of the insect into the house .
Plastic Cover
Disassembly of Heat Discharge Pipe
Electric Schematic Diagram
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The Electric schematic diagram are subject to change without notice. Please refer
to which one on the unit.

Aptitude requirement for maintenance man(repairs should be done only
be specialists).
a. All the work men who are engaging in the refrigeration system should bear the
valid certification awarded by the authoritative organization and the qualification for
dealing with the refrigeration system recognized by this industry.
b. It can only be repaired by the method suggested by the equipment’s manufacturer.
If it needs other technician to maintain and repair the appliance, they should be
supervised by the person who bears the qualification for using the flammable refrigerant.
Safety preparation work before installation
The safety must be inspected before maintaining the appliances with the flammable
refrigerant for reducing the flammable hazard to the lowest.
Work shall be undertaken under a controlled procedure so as to minimise the risk of a
flammable gas or vapour being present while the work is being performed.
Environment checking
Detection of flammable refrigerants
All maintenance staff and others working in the local area shall be instructed on the
nature of work being carried out. Work in confined spaces shall be avoided. The area
around the workspace shall be sectioned off. Ensure that the conditions within the area
have been made safe by control of flammable material.
The area shall be checked with an appropriate refrigerant detector prior to and during
work, to ensure the technician is aware of potentially toxic or flammable atmospheres.
Ensure that the leak detection equipment being used is suitable for use with all applicable
refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
No person carrying out work in relation to a refrigeration system which involves
exposing any pipe work shall use any sources of ignition in such a manner that it may lead
to the risk of fire or explosion. All possible ignition sources, including cigarette smoking,
should be kept sufficiently far away from the site of installation, repairing, removing and
disposal, during which refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure
that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.
If any hot work is to be conducted on the refrigeration equipment or any associated
parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry
powder or CO
2 fire extinguisher adjacent to the charging area.
Ensure that the area is in the open or that it is adequately ventilated before breaking
into the system or conducting any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation should safely disperse any released
refrigerant and preferably expel it externally into the atmosphere.
Under no circumstances shall potential sources of ignition be used in the searching
for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame)
shall not be used.
Specialist’s Manual

Refrigeration equipment Checking
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from
the equipment being worked upon prior to any removal of sealed covers, etc. If it is
absolutely necessary to have an electrical supply to equipment during servicing, then a
permanently operating form of leak detection shall be located at the most critical point
to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical
components, the casing is not altered in such a way that the level of protection is affected.
This shall include damage to cables, excessive number of connections, terminals not made
to original specification, damage to seals, incorrect fitting of glands, etc.
Electrical devices checking
Where electrical components are being changed, they shall be fit for the purpose and
to the correct specification. At all times the manufacturer’s maintenance and service
guidelines shall be followed. If in doubt, consult the manufacturer’s technical department
for assistance.
The following checks shall be applied to installations using flammable refrigerants:
Initial safety checks shall include:
Repair and maintenance to electrical components shall include initial safety checks
and component inspection procedures. If a fault exists that could compromise safety, then
no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the
fault cannot be corrected immediately but it is necessary to continue operation, an
adequate temporary solution shall be used. This shall be reported to the owner of the
equipment so all parties are advised.
Specialist’s Manual
The ventilation machinery and outlets are operating adequately and are not obstructed;
If an indirect refrigerating circuit is being used, the secondary circuit shall be checked
for the presence of refrigerant;
The actual refrigerant charge is in accordance with the room size within which the
refrigerant containing parts are installed;
That there is continuity of earth bonding.
Marking to the equipment continues to be visible and legible. Markings and signs that
are illegible shall be corrected;
That capacitors are discharged: this shall be done in a safe manner to avoid possibility
of sparking;
That no live electrical components and wiring are exposed while charging, recovering
or purging the system;
Refrigeration pipe or components are installed in a position where they are unlikely to
be exposed to any substance which may corrode refrigerant containing components,
unless the components are constructed of materials which are inherently resistant to
being corroded or are suitably protected against being so corroded.

Ensure that the apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded to the point that they no
longer serve the purpose of preventing the ingress of flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer’s specifications.
Cabling
Removal and evacuation
Leak detection methods
NOTE : The use of silicon sealant can inhibit the effectiveness of some types of leak
detection equipment. Intrinsically safe components do not have to be isolated prior to
working on them.
Check that cabling will not be subject to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse environmental effects. The check shall
also take into account the effects of aging or continual vibration from sources such
as compressors or fans.
The following leak detection methods are deemed acceptable for all refrigerant systems.
Leak detection fluids are suitable for use with most refrigerants but the use of
detergents containing chlorine shall be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.
If a leak is suspected, all naked flames shall be removed/extinguished.
remove refrigerant;
purge the circuit with inert gas;
evacuate;
purge again with inert gas;
open the circuit by cutting or brazing.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be
When breaking into the refrigerant circuit to make repairs – or for any other purpose –
conventional procedures shall be used. However, for flammable refrigerants it is important
that best practice is followed since flammability is a consideration. The following procedure
shall be adhered to:
recovered from the system, or isolated (by means of shut off valves) in a part of the system
remote from the leak. For appliances containing flammable refrigerants, oxygen free
nitrogen (OFN) shall then be purged through the system both before and during the
brazing process
Electronic leak detectors may be used to detect refrigerant leaks but, in the case of
flammable refrigerants, the sensitivity may not be adequate, or may need re-calibration.
(Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the
detector is not a potential source of ignition and is suitable for the refrigerant used.
Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and
shall be calibrated to the refrigerant employed, and the appropriate percentage of gas
(25 % maximum) is confirmed.
Specialist’s Manual

e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
mechanical handling equipment is available, if required, for handling refrigerant cylinders;
all personal protective equipment is available and being used correctly;
the recovery process is supervised at all times by a competent person;
recovery equipment and cylinders conform to the appropriate standards.
Decommissionin
Charging procedures
g
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure, ensure that:
Before carrying out this procedure, it is essential that the technician is completely
The refrigerant charge shall be recovered into the correct recovery cylinders.
For appliances containing flammable refrigerants, the system shall be “flushed” with
OFN to render the unit safe. This process may need to be repeated several times.
Compressed air or oxygen shall not be used for purging refrigerant systems.
Ensure that the outlet for the vacuum pump is not close to any ignition sources and that
ventilation is available.
In addition to conventional charging procedures, the following requirements shall be followed.
Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas.
The system shall be leak-tested on completion of charging but prior to commissioning.
A follow up leak test shall be carried out prior to leaving the site.
– Ensure that contamination of different refrigerants does not occur when using charging
equipment. Hoses or lines shall be as short as possible to minimise the amount of
refrigerant contained in them.
– Cylinders shall be kept upright.
– Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
– Label the system when charging is complete (if not already).
– Extreme care shall be taken not to overfill the refrigeration system.
For appliances containing flammable refrigerants, flushing shall be achieved by
breaking the vacuum in the system with OFN and continuing to fill until the working
pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum.
This process shall be repeated until no refrigerant is within the system.
When the final OFN charge is used, the system shall be vented down to atmospheric
pressure to enable work to take place. This operation is absolutely vital if brazing operations
on the pipe-work are to take place.
familiar with the equipment and all its detail. It is recommended good practice that all
refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant
sample shall be taken in case analysis is required prior to re-use of reclaimed refrigerant.
It is essential that electrical power is available before the task is commenced.
d) Pump down refrigerant system, if possible.
Specialist’s Manual

f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer's instructions.
h) Do not overfill cylinders. (No more than 80 % volume liquid charge).
Labelling
j) When the cylinders have been filled correctly and the process completed, make sure
that the cylinders and the equipment are removed from site promptly and all isolation
valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it
has been cleaned and checked.
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
Equipment shall be labelled stating that it has been de-commissioned and emptied of
refrigerant. The label shall be dated and signed. For appliances containing flammable
refrigerants, ensure that there are labels on the equipment stating the equipment contains
flammable refrigerant.
Recovery
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed. Ensure that the correct number of cylinders for holding
the total system charge are available. All cylinders to be used are designated for the
recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery
of refrigerant). Cylinders shall be complete with pressure-relief valve and associated
shut-off valves in good working order. Empty recovery cylinders are evacuated and,
if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions
concerning the equipment that is at hand and shall be suitable for the recovery of all
appropriate refrigerants including, when applicable, flammable refrigerants. In addition, a
set of calibrated weighing scales shall be available and in good working order. Hoses shall
be complete with leak-free disconnect couplings and in good condition. Before using the
recovery machine, check that it is in satisfactory working order, has been properly
maintained and that any associated electrical components are sealed to prevent ignition
in the event of a refrigerant release. Consult manufacturer if in doubt.
When removing refrigerant from a system, either for servicing or decommissioning,
it is recommended good practice that all refrigerants are removed safely.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants
in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that flammable refrigerant does not
remain within the lubricant. The evacuation process shall be carried out prior to returning
the compressor to the suppliers. Only electric heating to the compressor body shall be
employed to accelerate this process. When oil is drained from a system, it shall be
carried out safely.
Specialist’s Manual

66129930507
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