CPS AR2700A Manuale operativo - Pagina 8

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OPERATION
Turn main power switch ON. The power switch is located on back left hand corner of
unit. The AR2700 LCD will show the current refrigerant amount in storage tank. Open
both liquid and vapor tank and hose valves.
Manifold Function:
1.
Connect HI and LO side service hoses to A/C system. Open service hose valves.
Keep both HI and LO manifold valves in the closed (I) position.
2.
Start A/C system. Gauges will show system pressures of the A/C.
Recover Function:
1.
Connect HI and LO Side service hoses to A/C system.
Open the service
hose valves.
2. Push the TARE key on Scale keypad unit until zero
reading is shown.
3. Open (O) both the HI and LO manifold valves.
4.
Turn COMPRESSOR switch to ON
5.
Turn the RECOVER VALVE to open (O) position.
6.
Monitor the gauges for A/C system pressure.
7. Once below -5" hg. vacuum, Close (I) the RECOVER, HI and LO manifold valves.
8.
Turn the COMPRESSOR switch to OFF. Wait 5 minutes. If pressure rises above
0 PSIG, repeat Step 4-8.
9. Record weight on LCD. Push the TARE key to return scale to the current
refrigerant weight.
10. Slowly open oil drain valve until oil/refrigerant mixture is released into the oil drain
bottle. If no oil is draining, close oil drain valve. Recovery Complete.
Vacuum Function:
system pressure of 2 PSIG or lower. If pressure exists, go to Recover Function first.
1. Connect HI and LO side service hoses to A/C ports. Open the service hose valves.
2.
Open (O) both the HI and LO manifold valves.
3. Turn the VACUUM PUMP switch to ON.
4. Open (O) the VACUUM valve.
5. Run vacuum pump until desired vacuum level is achieved.
6.
Close (I) the VACUUM, HI and LO manifold valves.
7. Turn the VACUUM PUMP switch to OFF. Vacuum Complete.
Oil Injection Function:
Make sure there is a minimum of 6 ounces in the Oil Injection Bottle to ensure no air
gets back into the A/C system.
Before running the vacuum pump, the A/C system must have a
Oil Injection can be performed once vacuum is complete.
8
Oil Drain Port