Portable Chiller: MGD-15W-ADV-02
Page: 43
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
3.
Liquid line solenoid not opening fully or leaking during off cycle.
Have the solenoid repaired or replaced if defective by a refrigeration
serviceman.
4.
Expansion valve plugged or inoperative.
Check thermal bulb and
capillary tube for damage. Have bulb and/or tube repaired or replaced if
defective by a refrigeration service man.
4.5
COMPRESSOR SHUTS OFF ON INTERNAL OVERLOAD
A.
Control does not reset.
Have compressor windings and internal solid state safety
control checked by a refrigeration serviceman. Have it repaired or replace if defective.
4.6
LOW OR NO PROCESS PRESSURE OR WATER FLOW
A.
Valves.
Check if water valves are open.
B.
Pump.
Check pump for correct rotation. Check pump suction for restriction. Replace
motor if defective.
C.
Filters.
Check filter in the chilled water circuit and clean if necessary.
D.
Pressure switch (or flow switch).
Readjust or replace if defective.
E.
Fuses and wiring.
Have electrician check the fuses and wiring.
4.7
COOLING CAPACITY INADEQUATE
A.
Low refrigerant charge.
Check for adequate refrigerant charge (bubbles or misty
sight glass indicates low charge). If charge is low, have system checked for leaks and
recharged by a refrigeration serviceman.
B.
Hot Gas Bypass open or digital unloading valve inoperative.
Have repaired or
replace if defective by a refrigeration serviceman.
C.
Expansion valve plugged or inoperative.
Check thermal bulb and capillary tube
for damage. Have bulb or tube repaired or replaced if defective by a refrigeration
serviceman.
D.
Plugged filter.
Check filter in chilled water circuit and clean.
E.
Air in system.
Purge air.
