Atmospheric Oil Mist Detection System
MULTIPLEX
AM8/JANUARY 2015
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Fault Finding
Part4-3
FAULT DIRECTORY
FAULT
ACTION
REMEDY
F1 and Sensor
number is
displayed
1. Make up a short lead
with 6 pin male and
female connectors from
the Maintenance Kit
2. 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 is
displayed
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
1. Check Fuse FS1 on the
Power Supply Board
2. See Part 4-2
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
1. Check the Fuse FS1 on
the Power Supply Board
2. See Part 4-2
If the fuse is OK, then TR1 should be
replaced
F2
1. Remove Sensor
2. Clean lens
3. See Part 5-2
If a Sensor needs frequent cleaning
investigate source of dirt
F3 and Sensor
number is
diplayed
Check Sensor lens
1. Take Sensor off
2. Clean lens
3. 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
displayed
LED on front
of the Sensor
flashes RED
Check Sensor fan
1. Isolate and remove Q10 Sensor
2. Replace fan with Q1004 following
instructions supplied
