Flame instability.
Check combustion setting and re-set if
necessary.
4
Burner starts but will not
light up.
This can be due either to
absence of oil or ignition.
Oil pump air locked (repeat
air locking may be due to
poor pipe Joints or defective
gland packings).
Pump should be self-venting with two pipe
system only. If a one pipe gravity feed is
employed it must be purged through the vent
port.
Motor not driving pump Shaft
slipping.
Check that flexible drive is functioning
correctly and not slipping
Blocked atomiser nozzles.
Remove and replace nozzle.
Oil pressure abnormally low.
Check oil pressure on gauge and set to the
correct pressure
(see technical data).
Solenoid valve faulty.
Break union at outlet to check presence of
oil. Check that seat is clear. Check coil for
continuity. inspect coil feed wiring to control
box.
Pump rotation incorrect
Check.
Ignition failure:
Electrodes dirty.
Inspect and clean if necessary.
Electrodes miss-set.
Inspect and reset gap 3 to 4mm between
tips. 2mm in front of nozzle face.
Cracked electrode.
Check and replace if cracked or Crazed.
5
Burner lights up, runs
continuously and emits
visible smoke or shows
excess smoke on
combustion check.
Air shutter closed.
Reset to correct position.
Wrong nozzle.
Check make, type and spray angle.
Worn atomiser nozzle.
Replace if necessary.
Oversize nozzle fitted in
error.
Check size and replace with correct size if
necessary.
Nozzle incorrectly stamped.
Replace with correct nozzle.
Burner air supply
Inadequate.
Inspect air intake and fan for fouling of
impeller with dirt.
Burner oil pressure
excessive.
Check pressure and reset to correct
pressure (
see Technical Data)
6.
Burner lights up, runs
normally but flame cuts off
slowly on shut down
(possibly with smoke or
pulsation).
Air in nozzle.
Should self-correct; if air repeatedly present;
check for l eaks on oil line and flexible.
Magnetic valve not operating
correctly.
Inspect and replace if necessary.
Shut off piston in pump
sticking.
Check pressure and reset to correct
pressure
(see Technical Data)
.
7.
Burner Pulsates
(a) continuously.
Air supply setting incorrect or
fan inlet blocked.
Inspect and reset or remove blockage.
Grossly oversized nozzle
size and type.
(see Technical Data).
Air supply inadequate.
Check fan operation and cleanliness.
Worn nozzle with excess
Replace with nozzle of correct type size
(see
Page 50 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
