TM 10-3510-209-24
3-23. WATER HEATER OPERATING LIMIT AND HIGH-LIMIT CONTROLS
This task covers:
a. Replacement
b. Adjustment
INITIAL SETUP:
Tools
General Safety Instructions
General mechanic's tool set
SC 5180-90
WARNING
Personnel Required
High voltage is present on this equipment.
Do not perform maintenance with power on.
MOS 63J (1)
Death or serious injury may result.
Materials/Parts
WARNING
Operating/high limit relay
Ensure water heater is cold before servicing
Thread sealer compound
the high-limit temperature control. The
(Item 5, App C)
water vessel becomes hot during operation
and burns or bodily injury may result from
contact with the water heater before it
cools. Allow water heater to cool before
servicing the high-limit temperature control.
Equipment Condition
TM 10-3510-209-10, Tarp assembly removed.
REPLACEMENT
1.
Remove cap (1), retainer (2), and cover plate (3) from high-limit control (4).
2.
Tag and disconnect two wires (5).
3.
Loosen conduit nut (6) on each end of conduit (7) and slide nuts toward center of conduit.
4.
Open inspection plate (8) and pull wires until wires do not extend beyond end of conduit (7).
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