Grindmaster d-15 Manual Suplementario

Magnetic Lock Problems
If a unit is not spraying, check the following:
a) The impeller must spin freely when the bearing sleeve is held between 

the thumb and the forefinger,

b) The impeller should turn when assembled and the motor switch is 

turned “ON”.

c) The pump motor runs without the impeller in place.
d) The air-gap between the drive magnet and the impeller is too great, 

causing a loss of “magnetic lock”.

NOTE: When adjusting the drive magnet on the pump motor shaft, place
the drive magnet assembly as high as possible and still leave 1/16” clear-
ance between the magnet and the underside of the top tray. The spacers on the motor bracket may be removed first
for easier access.

Magnetic Lock Adjustment
1. Remove the pump motor assembly from the unit by loosening the (2) pump motor bolts with a 7/16 wrench. (To   

remove the left pump motor assembly on a D25, you will have to remove the (2) bolts that connect the frame to 
the top tray on the left side and raise the frame slightly to slide the motor out.)

2. With a 3/32 Allen Wrench, loosen the (2) set-screws on the drive magnet and raise the magnet. The magnet 

should be as close as possible to the evaporator cover without rubbing. Tighten the set-screws and replace the 
pump motor assembly.

1. Unplug the unit.
2. Remove all panels.
3. Remove 4 tray mounting bolts in upper corners.
4. Evacuate refrigerant.
5. Disconnect pump motor wires.
6. Unsolder suction line and capillary tube.
7. Replace filter drier.
8. Swap pump motor assemblies to new evaporator assembly.
9. Reassemble.
10. Evacuate and charge system.