TM 5-3610-285-14
b.
Loosen hex head setscrew on knob and remove knob.
c.
Remove four screws and front thermostat cover.
d.
Tag and disconnect wiring from thermostat.
e.
Remove nut and cable connector from box.
f.
Drain water from tank.
CAUTION
Use care when removing bulb to avoid damaging sensing tube.
g.
Loosen nut and remove sensing bulb.
h.
Remove two mounting screws and one housing screw. Remove thermostat.
i.
Install new thermostat with mounting screws and housing screw.
j.
Apply new teflon tape to threads and reinstall thermostat sensing bulb connector in tank. Tighten retaining nut.
k.
Reconnect cable and cable connector to box and secure with nut.
l.
Reconnect thermostat wiring.
m.
Reinstall front cover and secure with screws.
CAUTION
Do not turn on circuit breaker or heater switch until tank is refilled or heating element will
be damaged.
n.
Fill tank with water.
o.
Turn on circuit breaker CB7.
5-171
