SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8
– CORRECTIVE MAINTENANCE
OMM-0069_0H
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8.16 OVER-TEMPERATURE SWITCH AND TEMPERATURE
INDICATORS
The Over-Temperature Switch and Temperature Indicators are actually identical devices,
however they perform different functions. As the name implies, the Over-Temperature Switch,
performs a switching function and generates an alarm when the preset temperature limit is
exceeded. However, the Temperature Indicators are Indicator-Only devices and are not factory
wired to perform any switching functions. The locations of the Over-Temperature Switch and
Temperature Indicator are shown in Figure 4-4. Removal and replacement for each device are
performed using the following identical steps:
Figure 8-28. Over-Temperature Switch & Temperature Indicator
OVER-TEMPERATURE SWITCH and TEMPERATURE INDICATOR
REPLACEMENT Instructions
1. Open the Control Box door to locate the Switch or Indicator to be replaced.
2. Loosen the captive screw on the recessed panel behind the door. Open the swing-down
panel to access the Switch/Indicator wiring connections and panel retaining clips.
3. Remove the Switch/Indicator rear cover and loosen the terminal wiring connection screws.
Disconnect the wires.
4. To remove the Over-temperature Switch assembly, push in tab of each of two side
retaining clips (Figure 8-29), slide toward rear and remove.
5. Insert the replacement Over-Temperature Switch or Temperature Indicator into the panel
cutout.
6. Slide the removable retaining clip onto the replacement Switch/Indicator from the rear.
Push the retaining clip forward until the Switch/Indicator is firmly secured in the panel
cutout.
7. Reconnect the wiring to the rear of the unit and tighten the terminal screws. Replace the
terminal cover.
Figure 8-29. Removing Over-Temperature Switch Assembly
To uninstall, push tab to
release clip retainer. Slide
clip back and off. Remove
assembly through front
panel.