Lanair MX300 - Manual (Page 30)

Section 10 - Priming The Fuel Pump
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12. Turn the room thermostat below room temperature or “OFF”. The fuel supply pump will
now stop.
13. Reconnect the fuel supply line to the burner.
14. Remove the jumper wire from the F-F terminals on the oil primary control, reattach the
yellow cad cell wires.
15. Adjust the burner air filter/regulator to 18 PSI.
16. If the fuel supply pump prime, or fuel stream has air in it (spurting, fluctuating flow) there
is likely a leak in the suction side of the plumbing. Refer to section 14, trouble-shooting,
flow chart #2. The burner should now be ready to fire.