|
Intertherm Furnace Repair
QUESTION:I have a few ? about the workings of this furnace.
Intertherm
I anyone knows anything about this make it has a
Beckett motor and that's about all I can find.
The problem is that it works interminably.
I read that the fuel filter gets clogged sometimes.
But I could not find the fuel filter on the line.
The other possible problem is the Oil burner ignition transformer.
ANSWER: furnaces should be serviced by experienced individuals who are familiar
with all safety requirements, and a working knowlege of what types of
problems constitute safety hazards.
With that said, fuel oil furnaces require regular maintenance (and more
maintenance when they're improperly installed). Most installations require
separate fuel filters in the oil supply line.
When filters aren't installed, rust flakes or other particles are delivered
to the pump. Fuel oil should be treated with an approved stabilizer at
appropriate times.. fungal growth can occur in stored fuel oil.
Audel publishing has an excellent book covering installation, service,
repair, maintenance and operational information.. i'd reveal the title if i
knew where it was. The book i'm referring to is one of a 3 volume set
covering fuel oil, gas and other heating systems.
You might want to check your local library.
Some key trouble points (which are critical to proper and safe operation) in
fuel oil burner systems are.. the spray nozzle, the pump, combustion air
blower and pump shaft coupler, the HV coil and ignitor electrode tips, and
the flame sensor.
The spray nozzle should be the type specified on a data tag on the furnace.
These usually contain a sintered bronze-type filter/strainer.
The pump will likely have an internal fine mesh screen on the suction/supply
port. This screen prevents contamination from damaging the pump vanes and
bore.
Some systems bypass the fuel to a return line.
The white smokey-looking vapor seen when fuel is sprayed into a hot
combustion chamber (after the flame has died due to a malfunction), will
ignite explosively if the ignitor should happen to start working again.
Other points concerning fuel oil burners are the pressure regulator,
bleeding air from the oil passages, the air mixture shutter, and leaking
connections. I don't recall what the range of the pressure from the pump is,
but the pump is essentially a hydraulic pump, so leaks are a serious
problem.
Leaks on the suction/supply side can aerate the fuel.
|
|
|
|
