Atmospheric Oil Mist Detection System
TM4 / AUGUST 2018
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Sheet-42
FAULT DIRECTORY
FAULT
ACTION
REMEDY
F1 on display
and channel
number shown
Make up a short lead with
6 pin male and female
connectors from the
Maintenance Kit. Plug spare
Sensor into Monitor on the
defective channel number
shown. If the display becomes
steady this confirms there is a
fault in the cable between the
Monitor and Sensor
Check the cable is earthed between
the Monitor and Sensor as the manual
directs. Check there are NO OTHER
earth leads, or copper earth trips as
these will give interference.
F1 and Sensor
number comes
on.
Check cable between Monitor
and Sensor
F1 denotes cable fault. Check for split
or damaged cable or incorrect earthing -
see wiring instructions
F1 and all
Channel Lights
Flash
Check Fuse FS1 on the Power
Supply Board (Sheet-21).
If the fuse has blown replace it with a
1.25A fuse. If the fuse blows again,
check complete wiring of the system for
short - circuits or damaged wires
F1 and all
Channel Lights
Flash
Check the Fuse FS1 on the
Power Supply Board
(Sheet-21)
If the fuse is OK, then TR1 should be
replaced
F2
Remove Sensor. Clean lens
See Sheet-44
If a Sensor needs frequent cleaning
investigate source of dirt
F3 and Sensor
number is on
Check Sensor lens
Take Sensor off. Clean lens
Replace Sensor. If F3 still shows, return
Sensor to QMI for repair.
Isolate channel if there are no spare
Sensors.
F3 and Sensor
number is on.
L.E.D. on front
of the Sensor
flashes RED
Check Sensor fan
Isolate and remove Q10 Sensor. Replace
fan with Q1004 following instructions
supplied
“No CPU” light
on
Check internal connections.
The CPU light indicates a fault on
TRIPLEX Power Supply Board. This
board is either carried as a spare or is
ex-stock QMI
Fault alarm
comes on. QMI
Monitor shuts
down and
display ceases
Check FS3 fuse on side of
Monitor above security key
3.15A anti-surge fuse may have blown
due to an internal fault in the Monitor.
Check FS3 (Q0115) fuse in the Monitor
Note: Monitors are ex - stock QMI
