Pump Purge; Single Line (Gravity Feed System); Two Line (Lift System) - Riello 40 Installation & Operating Manual

PUMP PURGE

NOTE:
to protect the pump gears, it is advisable to lubricate the pump
prior to purging a lift system. Apply oil through the VACUUM
PORT (C).
A) SINGLE LINE (GRAVITY FEED SYSTEM)
A) Loosen the bleeder valve (A) until oil flows out. Tighten the
bleeder valve securely and start burner.
B) When bleeding the pump by pressure.
1) Loosen the bleeder valve (A).
2) Disconnect nozzle oil supply line at the pump nozzle port (B).
3) Attach a flexible plastic tube to the pump nozzle port, directing
the oil flow into a bucket.
4) Loosen the screws securing the air tube cover, allowing it to
be removed freely.
5) Holding the air tube cover in its proper location start the
burner.
6) When the solenoid valve is engaged, approximately 10 seconds after starting, remove the air tube cover and shine a
light source on the photo-cell, allowing it to see false light.
7) Run the burner until the fuel pump has been purged of air, then tighten the bleeder valve and immediately shut down
the burner.
8) Reinstall the air tube cover and nozzle line.
9) The burner can now be started normally.
WARNING:
Omitting steps 2 and 3 will result in a collection of unburned oil in the combustion chamber creating a hazardous sit-
uation upon burner startup.
B) TWO LINE (LIFT SYSTEM)
Turn off the main power source to the burner and remove the air tube cover.
Shine a light source on the photo-cell (now visible where the air tube cover was removed), return power to the burner
and activate the burner. With the light source in place, the burner will operate in prepurge only.
Once the burner is purged, turn off the power source and replace the air tube cover.
Return power to the burner.
The burner is now ready to operate.
ATTENTION:
It is important that the fuel line be completely sealed and free from air leaks or any internal blockages.
WARNING!
WHEN THE BYPASS PLUG IS INSTALLED, A TWO PIPE SYSTEM MUST BE USED OR FAILURE OF THE
PUMP SHAFT SEAL WILL OCCUR.
2555
B
D6185
GB
C
A
9