User's Manual

Repair
16 3A2954D
Repair
Primary Thermostat & Probe
(Model 24P016 Only, see FIG.10onpage17)
1. Perform Pressure Relief Procedure, page 11.
2. Remove screws (52) then remove housing
cover (18).
3. Loosen screws (25) that secure thermostat in place.
4. Remove wires from the primary thermostat termi-
nals (FF).
5. Loosen setscrew (26) in switch shaft (28)
6. Pull thermostat probe (EE) out of heater block.
7. Remove thermostat (24) from housing (1).
8. Remove screw standoff (35) with washer (27).
9. Remove bracket from thermostat (24) and secure to
new thermostat.
10. Liberally apply thermal lubricant (part no. 110009) to
probe (EE) of new thermostat (24). Loop capillary
tube (GG) several times and wrap the loops with tie
strap (42-not shown). Insert probe in the heater
block.
11. Continue reassembling in reverse order of disas-
sembly. See the following Reassembly Notes sec-
tion.
Overtemperature Switch
NOTE: This switch is a manual reset type. Press the red
button to reset the switch. Check for continuity across
the contacts. If the switch tripped, always determine the
cause before returning the heater to service.
1. Follow Pressure Relief Procedure, page 11.
2. Remove screws (52) then remove housing
cover (18).
3. Unplug wires from tabs (HH) on switch.
4. Remove the two screws (16) securing the switch
then remove the switch (10).
5. Liberally apply thermal lubricant (part no. 110009) to
the bottom of the thermostat switch and reinstall it in
reverse order of disassembly.
Reassembly Notes
• Refer to FIG.8orFIG. 9 for wiring connections.
• Make sure gasket (47) is installed and aligned with
electrical housing screw holes.
• Secure cover (18) with screws (52). Torque screws
to 89 in-lb (10 N•m).
To avoid burns, electric shock, and skin injection,
make sure the main power is OFF, heater is cool, and
pressure is relieved before repairing.
NOTICE
To avoid damaging capillary tube (GG) of the thermo-
stat, which can cause heater malfunction, do not kink
or nick the tube.
To avoid shorting out the heater, do not allow capillary
tube to contact the terminals on switch (10) or
thermostat (24). Follow step 10, below.