Leakage Checkpoints - A.O. Smith del and del Installation & Operation Manual

LEAKAGE CHECKPOINTS

Instructions: Use this illustration as a guide when checking for sources of water leakage. You or your dealer may be able to correct what
appears to be a problem. NOTE: Cover and Insulation shown removed to reveal tank top
Where possible remove or lift top cover to
examine threads of fittings installed into tank
for evidence of leakage. Correct fitting leaks
as necessary.
Water leaks at the elements
may be due to:
1. Defective element which leaks at
terminals or thru flange. Replace
element*.
2. Loose element/gasket leak:
(a) Screw-in type: tighten with
1-1/2" socket wrench or Part Number
23985 wrench. If leak continues,
remove element*, discard gasket
and clean thread
nonhardeningPermatex Number 2 to
thread areas, install new gasket and
screw element into fitting until it
seats. Tighten 1/2 to 3/4 turn with
wrench.
(b) Flange type: tighten screw with
wrench. If leak continues remove
element* and discard gasket. Clean
gasket seating areas and re-install
element with new gasket. NOTE: Part
Number 40000-1 scale cleaning
replacement screws available where
threads have become rusted or
damaged, preventing tightening.
All water which appears at the heater
bottom or on the surrounding floor may
be caused by condensation, loose
connections or relief valve operation and
leakage. Do not replace the heater until
full inspection of all potential leak points
is made and corrective steps taken to
stop the leak. Leakage from other
appliances, water lines or ground
seepage should also be suspected until
proven otherwise.
Anode Rod (Some Models)
areas.Apply
Relief Valve
10
To Open Drain
Condensation and dripping may appear
on pipes when cold water temperature
is low. Pipe fitting may be leaking.
Relief valve operation and leakage may
be due to water expansion during
heating cycle or foreign material on
seat of valve. If the valve is not piped to
an open drain the released water could
be mistaken for a leaking heater. To
check where threaded
between jacket opening and swab spud
area. Remove valve* if indicated and
repair with pipe joint compound.
To Open Drain
Water on the side of the tank may be
condensation due to the panel or
insulation not being in place.
Drain valve leakage could be from the
valve itself.* To check for leakage
where threaded portion enters tank,
insert Q-tip or similar absorbent
material between jacket opening and
valve to swab spud area. Remove valve*
if leak is indicated and repair with pipe
joint compound.
*Contact your dealer as it is necessary to
shut off electricity and drain tank to perform
procedure.
material