SEE FIG. 13
Disconnect the flexible oil pipe 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.
SEE FIG. 13
Remove the bleed screw from the manifold and fit an oil
pressure gauge with R1/8 connection to check the pump
output pressure.
Set the boiler burner time clock switch to continuous and
turn the boiler thermostat to maximum. The boiler burner
should run on pre-purge for 7 to 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
illumination of the signal light in the reset button of the
control box (see Fig. 14).
IN THIS EVENT, WAIT AT
LEAST ONE MINUTE
, then press the re-set button to
restart.
SEE FIG. 13
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.
SEE FIG. 13
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 9.0 bar (130
lb/in
2
).
12
BLEED AIR FROM OIL SUPPLY
FIT PRESSURE GAUGE
SWITCH ON ELECTRICITY
VENT OIL PUMP
ADJUST OIL PRESSURE
Re-commissioning
FIG. 13
FIG. 14
DESN 511235
DESN 511236
Summary of Contents for Heatranger 480D
Page 16: ...15 FIG 18 DESN 511140 Replacement of parts Electrical controls ...
Page 27: ...26 Electrical Controls CONTROL CIRCUIT BOILER FIG 35 ...
Page 28: ...27 Electrical Controls CONTROL CIRCUIT COOKER FIG 36 ...
Page 29: ...28 Fault Finding WIRING DIAGRAM BURNER ONLY FIG 37 ...
Page 30: ...29 Fault Finding WIRING DIAGRAM APPLIANCE FIG 38 ...
Page 34: ...33 ...
Page 35: ...34 ...
Page 36: ...35 ...
Page 37: ......