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BASIC SERVICE
28
ELECTRICAL SERVICE (Cont.)
Fuses —
Refer to Fig. 14.
There are two fuse blocks. A 3 pole block
(A) is located in the main control cabinet.
The (A) fuses protect the wash tank heater
circuit. Booster heater circuits
(MH-60 only) are not fused. A 2 pole
fuse block is located on the machine base
to protect the control circuit.
To Replace a fuse:
Turn the dishwasher main power switch
off. Disconnect power to the machine at
the main service disconnect switch.
Replace the fuse. If the fuse blows again,
DO NOT INCREASE THE FUSE SIZE.
DETERMINE THE CAUSE OF THE OVERLOAD.
Motor Overloads —
The wash pump motor has an overload to protect it from line
voltage electrical overloads. The overload disconnects
120VAC power to the motor contactor coil.
Refer to Fig. 15.
Note the Switch Lever on the Overload.
If the switch lever is off with the “0” showing
then the overload has tripped.
To Reset the Motor Overload:
Flip the overload switch to the On position.
A “1” should be visible on the switch lever.
To Replace a Motor Overload:
Disconnect the wires to the overload.
Release the mounting catch on the front
side of the overload. Push forward and lift out.
Snap the new overload into place and reconnect
the wires.
To adjust the overload setting:
The screwdriver in Fig. 15 is positioned
to adjust the motor overload AMP setting.
Read the full load amps (FLA) motor amps on the motor
nameplate. Turn setting to match the motor nameplate.
Figure 15
Motor Overload
Figure 14
Wash tank heater fuses
Control Cabinet
Switch Lever
A