Quality Monitoring Instruments QMI MULTIPLEX Manual page 61

FAULT
On start up
of system
Monitor display
Check if cable is not screened
is erratic and
does not settle
down
If Heads need
cleaning too Check the following
frequently
If readings fall Check the following
Check if fan has failed
A RED Flashing
Check if fan is running at 75%
Light when F4
or less of normal speed
is on display
indicates:
Check the Electromagnetic
Fan Fail Sensor
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
Check to see if cable runs near any
electrical power source. If it does,
cover cable in steel conduit
It is not necessary to have any extra
earthing, but the screen must be
connected to Pin 5 at both ends
The ball valve has been fitted in
front of the Fan and the baffles have
been fitted on the end of the pipe in
the crank space
The ball valve in front of the Fan has
not been closed down - see drawing
Part 2-6 and 2-7
The filter may need cleaning or
replacing - see drawing Part 5-3
- Replace the Fan Fail sensor - for
instructions see Part 5-2. Reset
the Monitor
- If the Monitor resets the Fan
Fail Sensor is at fault
- If the Monitor will not reset and
it still displays F4 – the fault is
with the Fan
- Remove the Fan Fail Housing
from
the fan for instructions – see
Part 5-2
- -Set the by-pass switch to the
'ON' position - for instructions
see
Part 5-2
- Replace the Fan Fail Housing on
the fan
- Reset the Monitor and F4 will
have
been cancelled. The Fan
Failure light will now display
a sequence of RED, YELLOW,
GREEN. Fan must be replaced
- Reset the by-pass switch to the
'OFF' position
Fault Finding Part4-7