4
DIRECT LIQUID OR VAPOR OPERATION
1. Connect the unit as shown in Diagram 1.
Note: The recovery tank must be rated for 38 bar.
2. Open the vapor valve on the Recovery Tank.
3. Open DISCHARGE valve on CR700.
Note: The Suction valve should be closed at this time.
4. Rotate the center valve to the “RECOVERY” position.
5. Push the Main Power Switch “ON”.
Note: If the unit fails to start, make sure there is no
suction pressure on the suction side of the unit. The
compressor is designed to start against high differential
pressures. Pressure on the suction side will reduce this
differential. Reset Circuit Breaker if tripped. Push the
LP Override Switch to the “ON” position.
6. Once unit has started, open the SUCTION valve on the CR700 to start the refrigerant flow.
7. The CR700 is designed to directly recover large amounts of liquid refrigerant. If during liquid recovery the
compressor begins to make a slugging or hammering noise, meter the incoming liquid by closing the
suction valve until the noise subsides.
8. The CR700 will automatically shut off* when a 10”hg vacuum is achieved. If the pressure rises (due to
boiling liquid refrigerant) the CR700 will resume operation.
9. After the CR700 has shut off, rotate the center valve to the SELF-CLEARING position. The CR700 will
resume operation automatically. The CR700 is now clearing out the condensor. The CR700 will
automatically shut off* when a 10”hg vacuum is achieved.
Note: If the LP override switch is set to “ON” position the unit will run continuously.
RECOVERY AND SELF-CLEARING ARE COMPLETE
LIQUID PUSH-PULL OPERATION
1. Connect the unit as shown in Diagram 2.
Note: The recovery tank must be rated for 38 bar.
2. Open the liquid and vapor valve on the Recovery Tank.
Note: The Suction valve should be closed at this time.
3. Open the DISCHARGE valve on CR700.
4. Rotate the center valve to the “SELF-CLEARING”
position.
5. Push the Main Power Switch “ON”
Note: If the unit fails to start, make sure there is no suction
pressure on the suction side of the unit. The compressor
is designed to start against high differential pressures.
Pressure on the siction side will reduce this differential.
Reset Circuit Breaker if tripped. Push the LP Override
Switch to the “ON” position.
6. Once unit has started, open the SUCTION valve on the CR700 to start the vapor refrigerant flow.
7. Monitor the optional inline sight glass for liquid refrigerant movement.
8. Once the liquid refrigerant is no longer present, close SUCTION valve. The CR700 will automatically shut
off* when a 10”hg vacuum is achieved.
9. Proceed to Direct Vapor Recovery Operation. (prior page)
Note: If the LP override switch is set to “ON” position the unit will run continuously.
