Whirlpool 20K Manual Del Usuario página 69

AIR PURGING
Air containing moisture remaining in the refrigeration cyde may cause a malfunction on the compressor.
After connecting the indoor and outdoor units, evacuate air and moisture from refrigerant cyde using a
vacuum pump, as shown below.
Note: Because the system pressure is high and also to protect the environment, be sure not to discharge
the refrigerant to the air directly.
Service port C_)
C_)
(2) Turn
( 8 ) Tig
How to Purge Air Tubes:
I . Unscrew and remove caps from 2 and 3-way valves.
2. Unscrew and remove cap from service valve.
3. Connect vacuum pump flexible hose to the service valve.
4. Start vacuum pump for I 0-15 minutes until it reaches an absolute vacuum of I O mm Hg.
5. With vacuum pump stili running dose the low pressure knob on vacuum pump manifold. Then stop
vacuum pump.
6. Open 2-way valve I /4 turn, then dose it after I O seconds. Check tightness of all joints using liquid soap
or an electronic leak detector.
7. Turn 2 and 3-way valves stem. Disconnect vacuum pump flexible hose.
8. Replace and tighten all valve caps.
Vacuum pump
Qèf
(7) Turn to fully
t e valve
h
' (ì>')
(I) Turn
/
'@ {: t
Valve cap
ten
h
69
3-way valve diagram
Connect to outdoor unit
Valve core
2-wayvalve
Q 0
(6) Open 1/4 turn
(7) Turn to fully open t
/(ì
L'��
(l)Turn
�
'@ ( : : (
",(J
Tig ten
h
"
"
Connect to indoor unit
Open position
Spindle
Needle
Service port cap
e valve
h
Valve cap
( 8 ) Tig ten
h
"