MPI KWH124 - Maintenance Checklist; Regular Maintenance Checks; Cleaning Instructions

( 5. MAINTENANCE CHECK LIST )
Flammables or Dust
Keep the top and vicinity of unit, clean.
Keep flammables and dangerous items away from unit.
Fuel Leakage, Spills, Stains
Make sure all fuel connections are tight and are not leaking.
Any spills or stains by unit indicate a leak and must be corrected.
Fuel Pipes Replacement
Check fuel pipes at least once a year for distortions and/or cracks. Contact authorized
service dealer for replacement of defective pipes.
Water in Fuel Tank
Water and dust can easily go into fuel tank. After accumulating in the tank, they may
flow into burner and cause imperfect combustion. Check if there is any water in the tank
at least every 6 months by checking the fuel filter canister at tank. Have any water
removed by an authorized service person.
Flue and Its Vicinity
Periodically, make sure that there are no flammables around and above flue,
sure flue is properly installed and maintained.
Also, make
Cleaning Heat Exchanger
Drain water from heat exchanger at least once a year.
l.Shut water supply valve at main.
2. Open hot water supply faucet.
3. Open drain valve at heat exchanger. Also, open inlet water filter and pressure release
valve. Then, drain water from heat exchanger.
Cleaning Inlet Water Filter
Check once every three months and remove debris
gathered in the inlet water filter.
l.Shut water supply valve at main.
2. Open hot water supply faucet.
3. Open drain valve at heat exchanger.
Then, remove inlet water filter and wash and clean it.
Cold water intake
Inlet Water Filter
CAUTION
If lime has accumulated, remove it with a commercial compound for
dissolving lime. Check water softening equipment if lime is found in the
filter.
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