TM 10-3510-209-24
Table 2-2. Unit Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12.
WATER HEATER SMOKE ESCAPES FROM AROUND BOILER BOX COVER. (Cont)
Step 2.
Check for loose nuts securing smoke box cover and burner head
assembly.
a.
If nuts are loose, tighten nuts.
b.
If nuts are secure and problem persists, notify your
supervisor.
13.
WATER HEATER TEMPERATURE GAGE SHOWS WATER EXCEEDS SET TEMPERATURE.
Step 1.
Check for improper setting of temperature control.
a.
If control is improperly set, adjust temperature control to a
lower setting.
b.
If control is properly set, proceed to next step.
WARNING
High voltage is present on this equipment. Do not perform maintenance with
power on. Death or serious injury may result.
Step 2.
Check for defective temperature control. With power off, measure
continuity between two control wires. As temperature setting is
increased, the open circuit should abruptly change to a shorted
circuit.
a.
If control is defective, replace temperature control.
b.
If control is not serviceable, proceed to next step.
WARNING
High voltage is present on this equipment. Do not perform maintenance with
power on. Death or serious injury may result.
Step 3.
Check for defective low water probe. With power off, measure
continuity between probe wire and ground. As water is drained from
full to low levels, meter will read as a short at first, then change
abruptly to an open reading.
Notify Intermediate Direct Support Maintenance for replacement of
low water probe.
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