Zell AC1000-3G, Service Manual

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11
5
Function check
5.1 Recovery
5.1.1 The working tank must have at least 2.5Kg of refrigerant in it to perform this test.
5.1.2 Plug in the cord to 220V 50HZ power supply, Turn ON the main power switch.
220V 50Hz Power supply must be firmly grounded
5.1.3 Confirm that the HP, LP quick coupler and hoses are well fixed to the units. And all
tank hoses are properly attached to the working tank.
5.1.4 Press Function button, and enter Other Service Item, use password 9227. Enter
the M. control valve interface. Long press the RECOVERY button, check the output of the
main control board is CN2,CN4,CN8. That means the SV8/compressor, SV4/SV6, SV1/fan
are working. Or please check the circuit connection.
5.1.5 After check the output, If the station is not OK, Pressurize the high and low side
hoses with refrigerant by function recharge, long press the key CHARGE button.
5.1.6 Start the recovery by long pressing the “R” button for at least 30 seconds. Suction
will begin and the LP gauge will be pulled into -0.2bar vacuum at least. Or please check if
the flow routine blocked, The solenoid valve and the compressor are in health working state.
5.2 Vacuum
5.2.1 Confirm that the HP, LP quick coupler and hoses are well fixed to the units. And all
tank hoses are properly attached to the working tank.
5.2.2 Press Function button, and enter Other Service Item, use password 9227. Enter
the M. control valve interface. Long press the VACUUM button, check the output of the
main control board is CN3,CN8. That means the SV1/fan, SV5/vacuum pump are working.
Or please check the circuit connection.
5.2.3 Start the vacuum by long pressing the VACUUM button for at least 20 seconds.
Suction will begin and the LP gauge will be pulled into -0.85bar vacuum at least. Or please
check if the flow routine blocked, the solenoid valve and the compressor are in health
working state.