MasterCool 69000 Manuel D'opération page 3

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tank. Recovery tank must be used on a scale that can be set to shut off refrigerant ﬂow when tank

reaches 80% of capacity. Recovery tank must have a minimum pressure rating of 38 bar (550 psi).

5. Open the valve on the unit being serviced (feeding inlet hose).

6. Open the vapor valve on the recovery tank.

7. Turn INLET valve on Recovery System to OPEN.

8. Turn on Recovery System (push power switch "I"). If Recovery System fails to start, rotate center valve

to PURGE position. Rotate inlet valve to PURGE position. Wait about 10 seconds for pressure to equalize.

If circuit breaker has tripped, reset it. Start Recovery System.

9. Once Recovery System has started turn center valve to RECOVER position and INLET valve to OPEN

position.

10. Observe operation of system. In rare instances "slugging " may be apparent (loud compressor noise or

high vibration). If this condition is apparent turn inlet valve to LIQUID position. System can be run with

this setting continuously. It is suggested that operator periodically turn inlet valve to OPEN position and

check for proper operation of system. Best operation of the system is with inlet valve OPEN and

automatic pressure regulating valve controlling ﬂow conditions.

11. System has automatic vacuum shut down switch. After recovery is complete system will turn off when

inlet pressure reading is about 14 inches of mercury (-.4 bar) below atmospheric pressure. When

system shuts down automatically, turn inlet valve to CLOSE position and turn power switch off. Proceed

to "Recovery System Purge" section to purge Recovery System of remaining refrigerant.

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RECOVERY SYSTEM PURGE

1. Turn off power switch. Turn inlet valve to PURGE position. Turn center valve to PURGE position. Make sure

outlet valve is in OPEN position. Start System. If system does not start due to pressure difference

between inlet and outlet, turn center valve slowly to recover position and slowly back to purge position.

The inlet and outlet pressure gauges should read the same pressure. Start system.

2. System will run until vacuum switch shuts System off automatically. Purge may take a few minutes as

some liquid refrigerant may be in the Recovery System. The liquid must become vapor, which may

require some time. System will shut-off automatically when proper vacuum level is reached.

3. Shut OFF Recovery System power switch. If system is to be used with the same refrigerant next

operation, shut outlet valve and disconnect outlet hose. If opening of Recovery System is required,

disconnect outlet hose to relieve residual pressure.

4. The inlet port has a ﬁne screen ﬁlter. Remove inlet nut and clean or replace ﬁlter after every use. A clean

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Table des Matières

69000-220 69000-j