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J. Charging Inaccuracies- Over and Under Charging
Possible Cause:
Unit was moved during the Charging operation
Solution:
It is very important that when unit is charging, it is
not bumped or in an area with excessive vibration during the CHARGING mode. The pneumatic wheels will help to reduce an
external vibration. Also the front casters utilizes a brake to help further stabilize the unit.
Possible Cause:
Storage Tank touching Framework
Solution:
Place the Storage tank in the center of the scale platform. If the scale touches the framework, it will cause
enough friction that the scale will read incorrectly during charging.
Possible Cause:
Uneven surface.
Solution:
The Fx134A / FX1234 / FX3030 Series unit should not be operated on a surface with a grade of more than 5 degrees.
The unit
should be placed on a level surface to ensure the highest accuracy of charging.
Possible Cause:
The Charging Solenoid is not properly closing.
Solution:
Disassembly the Charging solenoid and check for foreign material in the solenoid valve. See SECTION 3
on solenoid valve service.
K. High Pressure Limit Cutout - LCD message HIGH PRESS LIMIT
Possible Cause:
Tank Vapor valve and/or the Vapor Hose valve are closed causing the High Pressure to build up on
the compressor discharge. Once the pressure goes above 450 PSIG, the HP switch will activate.
Solution:
Open Tank Vapor and Vapor Hose valve to relieve the high pressure restriction. Re-start unit.
Possible Cause:
High amounts of non-condensable (NCG’s) are present in the storage tank.
Solution:
Check the tank pressure. If large amounts of NCG’s are present in the storage tank, follow the purge
procedure in the manual to remove the NCG’s.
Possible Cause:
Electrical Malfunction
Solution:
Check for loose wires on the HP switch
L. Tank Full Limit - LCD message “TANK FULL”
Possible Cause:
Storage tank has exceeded maximum refrigerant amount.
Solution:
You will need a spare empty storage tank. Connect the HI Side Service hose to the vapor port of the empty
storage tank. Charge about 8-10 pounds of refrigerant into the empty storage tank. Properly label the empty storage
tank with the refrigerant type. The unit can now be used for normal service operation.
Possible Cause:
Scale not reading correct weight.
Solution:
If the Tare (Zero) set point of the scale is incorrect, this could “fool” the PC Board into thinking that there is
Содержание FX1234
Страница 1: ...1 FX Series Service Manual Models FX134 FX1234 FX3030 CPS AUTOMOTIVE RECOVER RECYCLE RECHARGE ...
Страница 14: ...14 FX3030 PUMP DOWN ...
Страница 15: ...15 Hose Flush High Voltage Compressor ...
Страница 47: ...47 1 FX134A FX1234 FX3030 Series Refrigeration Schematic ...
Страница 48: ...48 2 FX134A FX1234 FX3030 Series Electrical Schematic ...