Champion PP-28 Corner, Technical Manual

Page: 26 / 105

18
ELECTRICAL SERVICE
ELECTRICAL SERVICE
Fuse Blocks—120VAC Control Voltage
Two fuse blocks, located in the lower front corner of the main 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.
• Flip the tab on the top of the fuse block to open the block.
• 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.
ÊFig. 2 shows the fuse block opened and the fuse exposed.
Motor Overloads
Motor overloads are located to the left of the fuse blocks inside
the control cabinet. The motor has an overload to protect it from line
voltage electrical overloads. In addition, an auxilary set of switch
contacts are built into the overload. The switch contacts
disconnect 120VAC power to the motor contactor coils in the
event of an overload condition.
Note the Switch Lever on the Overload.
• 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.3 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 125% over the FLA .
Figure 2
Fuse Blocks
Figure 3
Motor Overloads