NDFL100-38 / BR003211 / Rev. 220900A
Page 26
Service Display
The service display can be accessed only from the
operating display, and can be obtained irrespective
of burner status. Press the acknowledgement key,
and hold for about 2 seconds, a spanner symbol
will be highlighted. When in the service mode, the
display will move to the next screen and finally
back to the operating display with each press of
the acknowledgement key.
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OUTINE
S
AFETY
C
HECKS
TO BE CARRIED OUT ONLY BY QUALIFIED
AND EXPERIENCED PERSONNEL.
Check that the plant room is ventilated at all times.
Frequently inspect the air inlet of the burner and
ensure that there are no obstructions to air flow.
Flame Detection System (UV Cell)
Switch off the electrical supply to the burner.
Remove the UV cell from the burner casing and
cover the quartz glass envelope to exclude any light.
Do not touch the quartz glass with fingers.
Switch on the power supply. Check that the burner
locks out at the end of the ignition cycle. Switch
off the power supply. Replace UV cell. Switch on
the power supply. Reset lockout.
Flame Detection System (Photocell)
Carry out the photocell check sequence outlined
in the section Safety Checks on page 24.