Grindmaster d-15 Manual Suplementario

No or partial Refrigeration:
Compressor Runs
Note: Unit must spray or agitate 
properly to obtain cooling

• Not clear air flow
• Condenser clogged with dust or lint

• Faulty fan motor
• Loss of refrigerant
• Fan blade hitting wires or tubing

• Provide 6” clearance on sides and back
• Remove front panel and clean out all lint and 

dust . Use vacuum cleaner or bottle brush.

• Replace motor
• Return to factory - call for RMA.
• Bend wires or tubing to clear.

No Refrigeration:
Compressor Does Not Run
Note: Unit must spray or agitate
properly to obtain cooling

• Defective compressor overload protector
• Compressor cycles on overload protector

• Faulty refrigeration switch
• Temperature control open
• Faulty electrical connection 
• After checking all of above, if compressor 

doesn’t run

• Replace.
• Check for low line voltage. Then check relay 

and overload and replace if necessary.

• Replace switch.
• Replace temperature control.
• Locate and correct.
• Return to factory - call for RMA.

No Spray or Agitation:
Spray Motor Runs

• Pump impeller does not spin; check for worn 

bearing sleeve and/or impeller (impeller 
rubbing on stainless steel evaporator)

• Pump impeller does not spin freely on 

bearing sleeve.

• Impeller chatters but does not spin properly

• Replace sleeve and/or impeller.

• Clean impeller bearing. Ream out impeller 

bearing if necessary. Impeller must spin 
freely on bearing sleeve.

• Raise drive magnet higher on motor shaft, 

but not high enough to rub.

No Spray: Spray Motor 
Doesn’t Run

• Loose electrical connection to motor
• Faulty spray switch
• Faulty motor
• Drive magnet binds on plastic 

evaporator cover

• Locate and correct
• Replace spray switch
• Replace motor
• Relocate magnet (NOTE: Magnet 

should be about 1/16” from plastic to 
prevent binding or rubbing.)

Leaky Bowl

• Gasket improperly installed

• Worn or nicked bowl gasket
• Ordinary condensation build-up

• Reinstall gasket. Check directions for 

bowl assembly.

• Replace gasket
• Keep drip pan attached to catch 

condensation.

Noisy Unit

• Worn bearings in either fan or pump motor
• Bent fan blade
• Pump impeller and/or sleeve chattering

• Replace motor(s)
• Re-bend fan blade to correct alignment
• Replace impeller and/or sleeve

Unit Does Not Heat

• Loose electrical connection to heating 

element

• Locate and correct

Unit Overheats

• Faulty thermostat

• Replace thermostat