Operating instructions

MAINTENANCE
980076 08/26/03
4-15
PROBLEM CAUSE SOLUTION
Tighten fittings. Re-apply thread
sealant where required. If any fittings
are damaged, replace.
Outlet check valve is full of
debris or damaged, not
allowing it to close properly
Close the chemical valve on the
instrument panel. If the flow meter
does not indicate flow, remove debris
or replace check valve if necessary.
Chemical pump diaphragm is
ruptured.
Close the chemical valve on the
instrument panel. If the flow meter still
indicates flow, replace the chemical
pump diaphragm.
Chemical flow meter indicates flow
with the tool valve closed.
When this
conditon occurs,
shut the unit down immediately.
Prolonged running will damage the
fuel pump.
Internal leak in chemical prime
valve causing continual flow
through prime tube returning to
container.
Tighten valve packing nut (see
“General Service Adjustments” section
in this manual). Replace valve, if
necessary.
Not fuel oil. Fill fuel tank with kerosene.
Loose set screw on the flexible
coupling which drive the fuel
oil pump.
Tighten setscrew. Loc-Tite (or
equivalent) should be applied to
prevent the setscrew form loosening.
Broken flexible coupling which
drives the fuel oil pump.
Replace coupling, check for damaged
fuel oil pump.
Fuel filter is plugged. Change fuel filter element.
Plugged screen in fuel pump
or defective fuel pump.
Clean screen in fuel pump. If
necessary, replace fuel pump.
Suction leak somewhere
between the fuel pump and
fuel tank inlet.
Locate and correct either by tightening
fittings or replacing part.
Loss of fuel oil pressure, with the unit
running, the fuel pressure reads zero.
Defective pressure gauge. Replace gauge.
Ignition wires not connected to
electrode or magneto.
Re-connect wires.
Broken electrodes. Replace.
Faulty magneto. Repair or replace magneto.
Loss of ignition spark, with the unit
running there is no visual indication of
a spark.
When this malfunction occurs,
ALWAYS check inside the burner
cone for burner fuel. If burner fuel is
present, clean it ALL out before
igniting the burner.
Magneto drive belt loose or
broken.
Tighten or replace belt.