Quantum Series Installation and Service Manual
No cooling (con’t)
No water dispensed, concentrate only.
Defective start relay located on upper rear shelf inside dispenser
Compressor starts but hums and trips overload
Compressor starts but does not switch off of start winding
Compressor short cycles on overload
Refrigerant leak
No water to dispenser
Water supply line inside refrigerated cabinet dis- connected from pump platform
Water solenoid located on pump platform clogged or defective
Main water solenoid/ strainer located at base of dispenser is clogged, binding or defective
Water supply pressure is greater than 80 psi (5.5 bar)
There should be line voltage on the black wire of the relay when there is line voltage present on the orange OR yellow wire. Replace relay if it fails this test.
Seized or shorted compressor, replace.
Relay or compressor is defective. Test and replace faulty item.
Excessively high discharge pres-
sure due to restricted con- denser or inoperative condenser fan motor
Repair leak. Evacuate and recharge system.
Restore water
Reconnect
Disassemble and clean solenoid. Replace if necessary.
Remove and clean strainer. Con- firm 28VDC is present at sole- noid during dispense. Confirm solenoid coil is not open. Disas- semble and clean solenoid.
Add external regulator and lower pressure to 50 psi (3.5 bar)
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