Lanair HI140 - Manual (Page 54)

Section 17 Trouble Shooting Flow chart #2
Caution: Hazard of Electrical Shock
Symptoms:
1. Burner attempts to fire.
2. Poor flame.
3. No flame established.
4. No or low fuel output (refer to Sec. 17, 17.1).
5. Air in the oil, this can be seen when you bleed pump.
6. Oil Primary locked out.
Note:
Disable air operated fuel valve. Adjust burner air filter regulator to -0- psi.
Is the fuel level in the supply
Fill the supply tank with
tank above the check valve? No approved fuel above check valve.
Yes
Is there water or anti freeze
Yes Drain water/anti freeze from supply tank,
in the fuel? suction strainer, purge pump and lines.
No
Remove fuel pump/motor shield,
is the pump shaft turning correctly?
No Is pump/motor coupling stripped?
Facing the shaft end counter clockwise.
No Yes
Replace pump coupling.
Is the pump/motor
shaft turning?
Facing the shaft
end counter clockwise.
Yes
Yes No Is there voltage to pump
motor (115V)?
Replace fuel pump.
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