Priming Fuel Pump - Lanair XT Series Installation And Operating Instructions Manual

Priming The Fuel Pump
1. The fuel level in the supply tank must be above
the check valve on the pick-up tube
2. Remove the cap from the fill pipe at the suction
line strainer, and fill with clean used oil. Securely
replace the fill-pipe cap.
3. When using the bypass regulator, back the
thumb screw out (CCW) on the bypass regulator
until it is free, then turn (CW) two turns to seat
the diaphragm.
4. Loosen the bleeder screw on the pump one turn
and position a container below it to catch any oil
that is emitted.
5. Toggle the priming switch to the "PRIME" position.
6. When a steady stream of fuel (no air bubbles) begins to flow, close the bleeder screw.
7. Toggle the priming switch to the "Run" position.
8. Remove the fuel supply line from the burner, and position a container to catch the fuel.
9. Toggle the priming switch to the "Prime" position.
10. Observe the end of the fuel supply line that is disconnected from the burner. Allow a steady
stream (no air bubbles) of fuel to flow into the container for several minutes. This will flush
any debris from the fuel line that could potentially plug the nozzle. The vacuum gauge
reading should not exceed 5" HG of vacuum.
11. Toggle the priming switch to the "RUN" position.
12. Reconnect the fuel supply line to the burner.
The burner should now be ready for normal operation.
Section 9 - Priming The Fuel Pump
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