Kenmore K90-150 Owner's Manual page 25

Maintenance as outlined below can be performed
by the owner unless otherwise noted.
tings. Repair, if found. DO NOT use stop leak
compounds.
The acidic nature of flue gasses condensing on the
aluminum boiler sections will cause the formation
of aluminum oxide. This oxide formation is normal,
is generally uniform throughout the boiler sections,
and represents a negligible mass of aluminum that
is consumed by oxidation during the life of the boiler.
If left unchecked, this buildup may eventually cause
blockage of the flue gas passages in the boiler sec-
tions, reducing efficiency, and ultimately shutting
down the boiler due to lack of combustion air flow.
Regular service and maintenance by a qualified
service agency must be performed to assure
safe trouble free operation and maximum effi-
ciency. It is recommended to service the appli-
ance at least once every 12 months.
2. Check that boiler area is free from combustible
materials, gasoline, and other flammable vapors
and liquids.
3. Circulator pump and blower motor furnished
with boiler are permanently lubricated from the fac-
tory and require no further lubrication. Additional or
non-factory supplied pumps and/or motors should
be lubricated according to the pump and/or motor
manufacturer's instruction.
1. Schedule an annual service call by a qualified ser-
vice agency, which includes:
1. Check for and remove any obstruction to the flow
of combustion air or venting of flue gases.
2. Check that boiler area is free from combustible
materials, gasoline, and other flammable vapors
and liquids.
a. Examine flue passages between boiler sec-
tions, burner, and condensate lines, and clean if
necessary following the annual examination and
cleaning instructions in paragraph F (below).
b. Visually inspect venting and air intake system
for proper operation. If the vent or air intake show
any signs of deterioration or leakage, repair or
replace them immediately. Insure proper reas-
sembly and resealing of the vent and air intake
system.
c. Check for and remove any obstruction to the
flow of combustion air or venting of flue gases.
d. Follow instructions for "Placing Boiler In Op-
eration" in Section XII of this manual.
e. Follow "Checkout Procedures and Adjust-
ments" on previous page.
f. Visually inspect condensate drain line for prop-
er operation. Check for deteriorated or plugged
condensate drain line.
1. Remove jacket front and top panels and check for
piping leaks around relief valve and other fittings. If
found, contact a qualified service agency to repair.
DO NOT use stop leak compounds.
2. Test relief valve. Refer to valve manufacturer's in-
structions packaged with relief valve.
3. Visually inspect venting and air intake system for
proper function. If the vent or air intake show any
signs of deterioration or leakage, contact a qualified
service agency to repair or replace them immediate-
ly and to insure proper reassembly and resealing of
the vent and air intake system,
4. Visually inspect the PVC condensate drain pipe
for proper operation. If the drain pipe shows any
signs of blockage, leakage, or deterioration contact
a qualified service agency to clean, repair, or replace
it immediately.
5. Check air vent(s) for leakage.
g. Check all gasketed joints for leakage, and
tighten bolts or replace gaskets if necessary.
h. Remove jacket front and top panels and check
for piping leaks around relief valve and other fit-
Where low water cut offs are used, a periodic inspec-
tion of the low water cut off is necessary, including
flushing of float type devices. Refer to low water cut
off manufacturer's specific instructions.