Thermo Scientific BF51728, Installation And Operational Manual

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| Maintenance
9-58
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330985H01
1100°C Box Furnace
Chapter 9
7. Reassemble the unit.
Figure 7 Solid Relay Replacement
Contactor Replacement
If the contactor is inoperable, complete the following steps to replace the relay (refer to
Figure 7 “Solid Relay Replacement”):
1. Remove the screws located on the left and right sides of the control panel (item #1 in
Figure 7).
2. Slide the panel assembly away from the unit to expose components.
3. Locate the contactor on the component tray (item #3 in Figure 7).
4. Note the terminal connections of the relay wires and label them for reattachment.
Remove the wires from the terminals of the relay.
5. Remove the mounting screws from the relay.