Hubbell Electric Heater Company CE110 - Manual (Page 12)

SECTION III
- SCHEDULED MAINTENANCE AND OPERATION
WARNING / CAUTION
Before performing any maintenance procedure, make certain power supply is OFF and
cannot accidentally be turned on.
Exposure to 125°F or hotter water can cause scalding injuries. Appropriate caution must be
taken when using hot water. Special supervision must be given to those who cannot react
quickly such as children, invalids, or elderly persons.
MAINTENANCE AND OPERATION
The water heater is automatic in its operation. It will maintain a full tank of water at the
temperature setting of the thermostat. The water heater should not be turned on without first
making sure that the tank is full of water and that all air has been released.
FREEZING
The tank should be fully drained in the event the electricity has been turned off and if there
is danger of freezing.
QUARTERLY INSPECTION
1. Water temperature regulation.
a. Let water heater completely heat to a designated thermostat setting.
b. After thermostat satisfies (i.e., when the thermostat actually clicks off), draw water from
heater.
c. Measure the maximum temperature with an accurate thermometer.
d. If the temperature is above the safe limits for your circumstances call a service man to
adjust or replace the control.
2. Lift test lever on relief valve and let water run through valve for a period of
approximately 10 seconds. This will help flush away any sediment that might build up in
water passageways.
3. Inspect element flange for leakage as follows:
a. Shut off Power Supply.
b. Remove element housing cover.
c. Visually inspect heating element for evidence of leaks.
d. Rub finger around heating element and check for any evidence of moisture. If
moisture is present or a water drip is observed, follow procedure outlined in Section
V.
4. Check for loose electrical connections. Tighten as necessary.
ANNUAL INSPECTION
1. Flush tank as follows
a. Shut off power supply.
b. Attach a hose to the drain valve installed in the cold water piping.
c. Close valve on the cold water line to the heater.
d. Open the drain valve and direct the water to a drain.
e. Open hot water faucet to admit air into the tank.
f. Close drain valve and hot water faucet.
g. Open valve on the cold water line to the heater.
h. Turn power supply ON.
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