Manual Carrier 51QPD (page 8 of 19) (English)

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Warnings(for using R290/R32 refrigerant only)

Extreme care shall be taken not to overfill the refrigeration

system. Prior to recharging the system it shall be pressure

tested with OFN. 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.

14.Decommissioning

Before carrying out this procedure, it is essential that the

technician is completely 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.

a) Become familiar with the equipment and its operation.

b) Isolate system electrically.

c) Before attempting the procedure ensure that:

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.

d) Pump down refrigerant system, if possible.

e) If a vacuum is not possible, make a manifold so that

refrigerant can be removed from various parts of the

system.

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).

i) Do not exceed the maximum working pressure of the

cylinder, even temporarily.

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.

15.Labelling

Equipment shall be labelled stating that it has been

de-commissioned and emptied of refrigerant. The label

shall be dated and signed. Ensure that there are labels

on the equipment stating the equipment contains

flammable refrigerant.

16.Recovery

When removing refrigerant from a system, either for

servicing or decommissioning, it is recommended good

practice that all refrigerants are removed safely.

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 is 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 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.

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.

Note About Fluorinated Gasses

-Fluorinated greenhouse gases are contained in

hermetically sealed equipment. For specific information

on the type, the amount and the CO

equivalent in tonnes

of the fluorinated greenhouse gas(on some models),

please refer to the relevant label on the unit itself.

-Installation, service, maintenance and repair of this unit

must be performed by a certified technician.

-Product uninstallation and recycling must be performed

by a certified technician.

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Carrier 51QPD Manual

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