WhisperGen PPS16-12MD, User Manual

Page: 61 / 84

Maintenance
Replacing the FID
53
Replacing the FID
Overview
Check the condition and vertical position of the Flame Ionisation Detector
(FID) if error codes 58, 59, 60, 61, or 62 occur repetitively.
To prevent unintentional starts of the WhisperGen
TM
, heed the
warning given at the beginning of this section
Do not touch the surfaces that are labelled as hot.
It is important not to twist the brass nut on the FID as this may
damage the FID.
It is advisable to keep a spare FID with the WhisperGen
TM
at all
times.
Procedure
To check and/or replace the FID:
1. Stop the WhisperGen
TM
and wait until the STANDBY indicator on the
control panel is lit.
2. Remove the enclosure lid and wait for the engine to cool.
3. Undo the screw on top of the FID and detach the wire.
WTL0039
Evaporator
Glow Plug
FID
Evaporator
FID
4. Undo the screw that secures the FID clip to the evaporator.
5. Lift the FID out of the evaporator, gripping the FID below the brass nut
with a pair of pliers if necessary. Twist the FID from side to side while
pulling it straight up.
6. Check the FID for cracks and that the electrode tip at the bottom of the
FID is protruding by at least one millimetre.
Also check that there is electrical continuity between the brass nut and
the electrode tip. If the FID is cracked, has less than one millimetre of
the electrode protruding, or has electrical discontinuity, it should be
replaced with a new one. Otherwise, the FID is re-usable.
WTL0040
Replace if
cracked
Replace if
less than
1mm
Replace if
there is electrical
discontinuity
(open circuit)