Carrier CDII-184R1-0CTR4 Installation & Operation Manual page 30

VACUUM PUMP
A two-stage vacuum pump with gas ballast (0.04 mbar standing vacuum) shall be used with a
capacity consistent with system volume. It is recommended to use connecting hoses with a
large diameter to avoid excessive pressure losses and results in faster & complete vacuum.
WARNING
Do not use a megohmmeter or apply power to compressor while it is under vacuum. This may
cause motor winding damage. Never run compressor under vacuum as it may cause
compressor motor burnout.
Note: You are requested to use Electronic Vacuum Gauge.
OPENING OF VALVES
1. Place the hexagonal wrench on the valve bar and turn counterclockwise.
2. Stop when the valve bar no longer turns. It is now open.
3. Open (backseat) the suction and liquid valve to allow refrigerant to flow through the system.
The unit is ready to be test started.
In case a leak has occurred, the refrigerant system has to be repaired, pressure tested and
evacuated, recharging of R-410A will have to be done.
For this, connect the refrigerant cylinder to the suction valve and the gauge manifold to the
liquid valve. Make sure to purge air from charging line prior to tightening the connections.
7.10 COMPRESSOR OIL
Idemitsu Daphne Hermetic Oil FV50S.
Type
Polyvinyl ether lubricants containing antioxidant, anti-wear agent etc.
(Note: Above picture is for reference only)
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