THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
Item #1040406R – Limit Switch Assembly 2002 and 2003 REPL
Item #1040408R – Limit Switch Assembly 2004 and 2005 REPL
Item #1040410R – Limit Switch Assembly 2006 REPL
WARNING
HAZARDOUS VOLTAGE: Risk of electric shock. Can cause injury or death. Heater may be connected to more than one branch circuit. Disconnect power to all circuits before servicing.
Top Limit Replacement
(Jump to Bottom Limit Instructions▼)
Disconnect Power
Disconnect power to all branch circuits and remove the front painted panel.
Open Control Panel
Place the control panel bracket into the service position. (Figure 1)
Cut Black Wires
Locate the 2 black wires that route from the element termination on the back side of the top 2 elements to the service light (2000 Series) or core limit relay (Quantum). Cut both black wires about 8” (inches) from the element termination.
Disconnect Wires
Disconnect the wires from the back side of the top 2 elements.
Remove High Limit
Remove the screw holding the high limit switch to the bracket and remove the high limit switch by pulling out.
Prepare New Limit
Uncoil the new high limit switch.
Insert New High Limit
Insert the new high limit switch by gradually inching it through the bracket and into the guide tube.
NOTE: DO NOT use water-based lubricant to aid in the installation of the high limit switch(es). Use of a water-based lubricant will make any future replacement of these limits impossible.
Secure High Limit
Secure the high limit switch to the bracket with the screw.
Secure the 2 Black Wires
Secure the ends of the 2 black wires from the service light (2000 Series) or core limit relay (Quantum) to the 2 black wires off the limit switch using the butt crimps provided.
Connect Elements
Connect the element terminations to the back side of the top 2 elements.
Close Control Panel
Move the control panel back into position.
Secure Front Panel
Secure the front painted panel and restore power.
Verify Operation
Verify heater operation.