Panasonic CS-MC120KE Service Manual page 27

5 Evacuation
(No refrigerant in the refrigeration cycle)
(Indoor unit)
OPEN
Vacuum pump
Procedure:
(1) Connect the vacuum pump to the charge set's
centre hose.
(2) Evacuation for approximately one hour.
Confirm that the gauge needle has moved toward
–0.1 MPa (–76 cmHg) [vacuum of 4 mmHg or less.]
(3) Close the valve (Low side ) on the charge set, turn
off the vacuum pump, and confirm that the gauge
needle does not move (approximately 5 minutes
after turning off the vacuum pump).
(4) Disconnect the charge hose from the vacuum
pump.
Vacuum pump oil
If the vacuum pump oil becomes dirty or depleted,
replenish as needed.
(Liquid side)
(Gas side)
Lo Hi
CLOSE
– 26 –
(Outdoor unit)
2-way valve
Open
3-way valve
Open
CS-MC120KE