IDROBASE Stella - Page 68

68
HEATER / FUEL PUMP
PROBLEM CAUSE SOLUTION
The burner
doesn’t start
• Fuel level too low
• Electrodes damaged
• Clogged fuel lter
• Clogged fuel nozzle
• Ignition transfromer doesn’t spark
• Burner motor doesn’t run
• Check the fuel level and ll it up
• Repair or replace them
• Clean or replace it
• Clean or replace it
• Replace it
• Replace it
The pump
does not work
• Joint coupling broken. • Remove the pump and replace the joint.
Lack of
vacuum
• Joint coupling broken.
• Blocked pump.
• The motor does not run.
• The cover are not enough screwed
up.
• Suction pipe broken.
• There is not enough fuel in the
tank.
• Remove the pump and replace the joint.
• Remove the pump cover and loosen the 3 screws which
x the gears with a 8-mm hexagonal spanner. Start the
motor and simultaneoulsy tighten the three screws. If the
pump is still blocked is necessary replace it.
• Check that the power supply corresponds with that speci-
ed on the nameplate.
• Tighten the 4 cover screws with a 4 mm hexagonal span-
ner.
• Replace the suction pipe.
• Add fuel to the tank.
Unstable
vacuum
• Air inltration in suction pipe.
• There is not enough fuel in the
tank.
• Motor-pump coupling not correct.
• Partial block of lters or suction
pipe.
• Check that all connections are air-proof.
• Add fuel to the tank.
• Remove the pump, check if the joint is damaged. If ne-
cessary replace it.
• Check the cartridge lter inside the pump by loosen the
screw with 4 mm hexagonal spanner, also check other l-
ter inside the suction pipe.
Noisiness • Excessive vacuum.
• Air infiltration in suction pipe.
• Motor-pump coupling not correct.
• Check that the pump sucks fuel.
• Check that all connections are air-proof.
• Remove the pump, check if the joint is damaged. If neces-
sary replace it.
10  TROUBLESHOOTING
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