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Argo ECOLIGHT MULTI SPLIT Manual

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V 10/19
78
Vacuum pump
Maintenance
Only use adequate equipment for the R32
refrigerant
Do not use a different refrigerant from
R32.
Do not use mineral oils to clean the unit.
Vacuum pump
Humid air left inside the refrigerant circuit can cause com-
pressor malfunction. After having connected the indoor
and outdoor units, bleed the air and humidity from the
refrigerant circuit using a vacuum pump.
Vacuum pump Vacuum pump
Twisting moment (N.m)
35-40
60-65
45-50
Φ12
70-75Φ19
Φ9.52
Diameter (mm)
Φ16
(1) Unscrew and remove the caps from the 2-way and 3-
way valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an
absolute vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the
low-pressure knob on the vacuum pump coupling.
Stop the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it
after 10 seconds. Check all the joints for leaks using
liquid soap or an electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Discon-
nect the vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
Φ6 15-20
18K unit need to be installed the indoor unit
conversion joint
18K MODE:
INDOOR
UNIT
Connect to the
indoor unit
Refrigerant fluid direction of fiow
3-way valve
inlet
(8) Secure
(2)Turn
(2)
(7)Turn to open fully
Turn
Valve cap
Valve cap
Service
(2)Turn
(8) Secure
(8) Secure
2-way valve
(6) Openby 1/4 turn
(7)Turn to open fully
… 36 …


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