CHAMPION USN10 - Manual (Page 61)

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5.3 Component Repair and Replacement (Cont)
5.3.16 Fuses and Fuse Block Replacement
Fuse Blocks—120VAC Control Voltage
The two fuse blocks, located on the center row and to the left side
of the control cabinet protect the main control transformer. Each
fuse block holds a fuse. The fuses are marked 1FU and 2FU on
the electrical schematic.
To Replace the fuse:
• Disconnect power to the machine at the main service switch.
• Remove the fuse and replace it.
• Close the fuse block and turn the main power on.
• If the fuse blows again, DO NOT INCREASE THE FUSE SIZE.
• DETERMINE THE CAUSE OF THE OVERLOAD.
5.3.17 Motor Overload Adjustment and Replacement
Motor overloads are located to the left of the fuse blocks inside the control cabinet. Each motor
has one overload to protect it from line voltage electrical overloads. In addition, an auxiliary set
of switch contacts is built into the overload. The switch contacts disconnect 120VAC power to the
motor contactor coils in the event of an overload condition. Refer to Fig. X. If the switch lever is
off with the “0” showing then the overload has tripped on an overload.
To Reset the Motor Overload:
• Flip the starter switch to the On position.
• Run the dishwasher and test the AMP
draw of the motor in question. If the motor
checks okay then there may be a wiring
problem or the overload may be defective.
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. 2 is positioned
to adjust the motor overload AMP setting.
• Read the FLA motor amps that applies for the
machine voltage on the Motor Nameplate.
• Turn the setting to match nameplate FLA.
Furnas
PART 5: BASIC SERVICE