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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
POTABLE WATER PIPING SYSTEM - CONT
STEP 1. Check for open hot water heater circuit breaker.
Reset circuit breaker at Main Switchboard.
STEP 2. Check for closed inlet/outlet valve.
Ensure valves are open.
NOTE
Remove power from hot water heater when using an ohmmeter
for continuing checks.
STEP 3. Use ohmmeter to check disconnect switch.
Replace/repair disconnect switch as necessary (para. 2-168).
STEP 4. Check for loose or damaged electrical connections and cables.
Repair electrical connections or cables as necessary.
STEP 5.
grounded circuitry.
Replace heating element as necessary (para. 2-328). Restore power to hot
water heater at disconnect switch.
Check for hot water leakage.
STEP 6.
Make sure the drain valve is tightly closed.
Check the relief valve outlet for leakage. Replace relief valve as
b.
necessary (para. 2-328).
Examine the flange area of the heating elements for gasket leakage.
C.
Tighten bolts or replace gasket as necessary.
Excessive pump vibration.
216.
STEP 1.
Air in system.
Bleed pump and suction line.
b.
Prime pump.
STEP 2. Check for loose or broken foundation bolts.
Tighten or replace bolts (para. 2-95).
STEP 3.
Check for pump/motor misalignment.
Inspect pump and motor alignment with suction and discharge piping.
Check all piping supports for security and effective loading,
be:
2-163
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