Quality Monitoring Instruments QMI MULTIPLEX Manual page 53

ISOLATING FAN FAILURE SENSOR
General Layout Diagrams
FAN FAILURE HOUSING ASSEMBLED ON FAN
a
To Isolate Fan Failure Sensor
PCB
LED
CABLE TO
MULTIWAY
JUNCTION BOX
The off switch position is used in the event of fan
failure, or sensor failure in order to bypass the sensor.
This isolates fan failure sensor until possible to replace.
Remember to switch back when new sensor is installed.
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
b
on off
switch
PCB
GENERAL ASSEMBLY DRAWING OF FAN AND ACCESSORIES
fan failure box
ferrous bar
fan body
fan motor
Fan Failure Sensor On
on
PCB
LED
PCB
CABLE TO
MULTIWAY
JUNCTION BOX
Fan Failure Sensor Off
PCB
LED
PCB
CABLE TO
MULTIWAY
JUNCTION BOX
Running Procedure
red/yellow/green light
cable to Multiway
Junction Box
sensor
1 to 1.5mm
gap between
ferrous bar
and tip of sensor
impeller shaft
mains input
switch
off
switch
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