Bleed Air From Oil Supply; Re-Commissioning; Fit Pressure Gauge; Switch On Electricity - Stanley Alpha 120 Servicing Instructions

Re-commissioning

BLEED AIR FROM OIL SUPPLY

SEE FIG. 20
Disconnect the flexible oil pipe line at the pump inlet, open
the stop valve slowly and run off some of the oil into a
receptacle to establish an air free supply to the pump.
Remake the connection oil tight and leave valve open.

FIT PRESSURE GAUGE

SEE FIG. 19
Remove the bleed screw from the manifold and fit an oil
pressure gauge with R 1/8 connection to check the pump
output pressure.

SWITCH ON ELECTRICITY

Set the boiler burner time clock to continuous and turn the
boiler thermostat to maximum. The boiler burner should
run on pre-purge for 7-15 seconds. With the ignition spark
energised. The oil solenoid valve should open allowing
the burner to fire.
Until all the air from the oil pump is flushed out there may
be some flame instability resulting in the burner locking
out. This will be shown by the burner stopping and the
reset button will be illuminated in the control box. IN THIS
EVENT, WAIT AT LEAST ONE MINUTE, then press the
reset button to restart. (See Fig. 21).
VENT OIL PUMP
SEE FIG. 19
Whilst the burner is running, vent air from the pump by
slackening the pressure gauge port sufficient to allow air
to bleed out. When bubble free oil seeps out re-tighten.
ADJUST OIL PRESSURE
SEE FIG. 20
With the burner running check the oil pressure on the
pressure gauge.
If the pressure gauge is not indicating the correct reading
then adjust the pressure by turning the pressure regulator
clockwise to increase or anti-clockwise to decrease the
pressure until the pressure gauge reads 10 bar
(145Ibf/In 2 ).
FIG. 19
FIG. 20
FIG. 21
13
DESN 514825
OIL
PRESSURE
ADJUSTMENT
DESN 511997
DESN 514807