Stovax PR0741 - Manual (Page 27)

SERvICING INSTRUCTIONS
FAULT FINDING ChARTS
27
FLAME FAILURE FUNCTIONAL CHECK
PILOT WILL NOT STAY LIT OR FIRE GOES OUT
If the fire goes out in use continually, this may mean that the
oxygen depletion sensor has been activated. The fire should not be used
until the cause has been found and rectified.
Ensure there is no debris around the pilot assembly, e.g. coal, soot, etc.
Check for fluff in the pilot aeration hole. See diagram 10.
Light the pilot and keep the control knob pushed in at least
10 seconds before letting go
With the pilot
running is the
gas pressure as
stated on the
data badge?
Is the pilot
flame of the
correct length?
See diagram 7.
Is thermocouple
connection good
in back of valve
Replace
ODS unit
Change the
ODS unit
SySTEM O.K
Tighten the
connection and
retry
With the fire
running on full is
the gas at the
pressure stated
on the data badge Problem is with
the pipe work or
fittings which lead
to the fire. Correct
and retry
Run for 60 secs.,
turn off, time
interval until mag
unit shuts with a
click. Is this greater
than 7 seconds?
Run for 60 secs.,
turn off, time
interval until mag
unit shuts with a
click. Is this greater
than 7 seconds?
Will the pilot
stay lit?
Will the pilot
stay lit?
Change
mag unit
YES
NO
NO
NO NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES