9
4.2 NORMAL RECOVERY OPERATION
4.2.1 Connect all cables and hoses as described in Section 4.1 above and as shown in the diagram
below. Ensure that they are tight and routed in such a way that they will not interfere with the
operation.
SET-UP PROCEDURE FOR NORMAL REFRIGERANT RECOVERY
4.2.2 Switch o the power to the unit being serviced. If the power switch is in a remote location,
LOCK it out so that no one will accidentally turn it back on.
4.2.3 Purge hoses and machine as necessary. Do not use pure liquid refrigerant for this purpose as a
hydraulic lock and damage may occur upon start.
4.2.4 Set PURGE /RECOVERY valve (B) unit for RECOVERY.
4.2.4.1 OPEN DISCHARGE valve (C) to its fully open position.
4.2.4.2 Open tank valve.
4.2.4.3 Switch ON the recovery unit and verify that the compressor is operating.
4.2.5 Open the INLET valve (A) slowly and verify that no leaks are present. Open inlet valve fully for
vapour recovery or place it on the liquid setting for liquid recovery. If the compressor ‘knocks’ shut
the inlet valve (A) immediately. Reopen slowly ensuring the valve is throttling enough liquid refrigerant
to impede hydraulic lock and damage.
4.2.6 Monitor operation.
4.2.7 Continue to operate until the required VACUUM has been pulled on the system (refer to section
8.0 of this manual), as indicated by the LP gauge. Switch OFF the re-covery unit, CLOSE the INLET
(A), and wait for 5 minutes. If the pressure in the system, as indicated on the manifold gauge, rises
above 0 Kpa, refrigerant is still present. If so, RESTART recovery machine, reopen the INLET (A)
and run until the required VACUUM is reached again. Repeat this process until all the refrigerant is
removed resulting in a nal reading of 0 Kpa or less.
CYLINDER
SCALE
VAPOUR
FILTER
LIQUID
SYSTEM
LIQUID
XTRULTRA-2 A5 safety-operation-manual.indd 9 01/02/2018 15:42
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