Quality Monitoring Instruments QMI MULTIPLEX Manual page 59

FAULT
Fault alarm
comes on. QMI
Check FS4 fuse on side of
Monitor shuts
Monitor above key
down and
display ceases
Fault alarm
comes on. QMI Check fuse on side of the
Monitor shuts Monitor above Key FS4
down
One Detector
Head shows
Change Head for spare. If
0% oil mist
spare shows % then remedy
when engine is
running.
Slow-speed engines normally
produce very little oil mist but
they do have a large amount
of oil splash which will not be
Monitor is
indicated on the Monitor.
showing 0%
when engine is
NOTE: if the engine body is
running on full
cold or lube oil is not up to
load
normal working temperature,
you will not get oil mist as it
cannot be produced unless
there is a hot spot
Medium Speed Engine - up to
750rpm
Monitor is
showing 0% NOTE: if the engine is cold or
when engine is the lube oil is not up to normal
running on full working temperature you
load could get a zero reading as
there is no oil mist because it
cannot be produced.
EM6/March 2015
EMAIL qmi@oilmist.com WEBSITE www.oilmist.com 4 East Barnet Road, London, EN4 8RW, UK. TEL +44 (0)20 7328 3121
Engine Oil Mist Detection System
MULTIPLEX
ACTION REMEDY
Fuse 3.15A anti-surge fuse may
have blown due to an internal fault
in the Monitor
Check fuse in the Monitor
If fuse is OK, check external power
supply to QMI system. Fault alarm
(will sound) if power is shut down
If spare Head reads oil mist, return
old Head to QMI for repair and
recalibration.Check the Back Plate
gasket is sound and the Detector
Head sits flush on Back Plate
1. Set Monitor down to 0.5mg/L
or lower
2. Check filter is not blocked
3. Pass smoke through Detector to
check there is suction and the
Monitor responds
4. If not, change the Detector with
one that has suction
5. If the new Detector responds,
return the faulty unit to QMI
Firstly, change the Detector with
a working unit. If both work then
check the following using smoke:
1. Ensure that you are getting
suction through the Detector
2. Check that the Detector is on
the downward throw of the
engine
3. Check the filter is not blocked
Fault Finding Part4-5