Fault Finding; Fire Ignition - Glow-worm Chatsworth 4 BBU Instructions For Use Installation And Servicing

7.1 Fire Ignition

Refer to Fire Ignition Sequence of Operations, see diagram 7.1.
7.2 Safety Device
If the fire shuts down for no apparent reason the flue/chimney
and the air inlets into the room must be checked.
Check that gas supply is available, free of obstructions and purged of air. Ensure that linkage operates spindle
on gas valve. Ensure electrode is not cracked, the spark gap is correct and the ignition lead is in good condition.
Press control lever
down to ignition
position
Are sparks visible
at electrode
YES
Does pilot and burner
ignite at low rate
YES
Hold control lever
in ignition position
for several seconds.
Move control lever
to position 1.
Do ignition sparks
stop?
YES
Does fire remain
alight at low rate?
YES
Move control lever
to position 2.
Does rate increase?
YES
Move control lever to
position 3.
Does rate increase?
YES
Move control lever to
COKE position.
Does flame picture
change to blue from yellow?
(when fire is hot)
YES
Move control lever to
off position. Does fire
go out?
YES

7 Fault Finding

Check battery voltage
and if fitted correctly.
If voltage is less than
7.5V, replace.
NO
Press control lever
to ignition position.
Are sparks visible?
YES
NO
Faulty gas
control valve.
Replace
NO
Faulty microswitch 1
Replace
Hold control lever in ignition position.
NO
If after several seconds the milli voltage is not
greater than 6mV. Replace faulty thermocouple
NO
Faulty gas control
valve. Replace
NO NO
Faulty gas control
valve. Replace
Check that aeration
plate on side of burner
NO is moving when control
lever moves from coal
to coke position.
If faulty Replace
NO
Faulty off
Replace microswitch 1.
Any problems found must be put right, before the fire is used
again.
Also, check for dust and lint around the holes in the safety
device.
IN ALL cases the room must be ventilated before attempting to
relight the fire.
The safety device must not be bypassed or put out of action.
Disconnect black
wires from spark
NO
generator.
Depress control
lever to ignition
position. Check
continuity of
YES
micro-switch,
is there continuity?
NO
Faulty ignition.
Replace microswitch 2
Sequence of
operation correct
19
Diagram 7.1
221907B