GB 02896 - Edition 02 - Oct 13
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C 25
Safety management
Safety switch location
7 : N
2
flow switch (hazard) (Semi configuration)
12 : Pressure switch (hazard) (Semi configuration)
4 : Pump motor temperature switch (warning and hazard)
5 : Roots motor temperature switch (warning and hazard)
14 : Ground fault relay (Semi configuration)
15 : Enclosure switch (hazard) (Semi configuration)
IS : Inlet stage
TS : Transfer stage
ES : Exhaust stage
Safety parameters
Water inlet
Inlet
IS
TS
TS
TS
TS
ES
Monitoring
Electrical
cabinet
7
Anti-suckback valve
Water outlet
Exhaust
Functional block
Roots
Motor
3
Inert gas
Main Power
Main switch
Main
breaker
12
5
4
14
15
N
2
fl ow switch
(Semi confi guration)
Pressure switch
(Semi confi guration)
Pump motor and
Roots temperature
switchs
Enclosure exhaust
switch
(Semi confi guration)
Ground fault relay
(Semi confi guration)
Function
Detect a defect of N
2
fl ow purge
Detect an overpressure
in the exhaust line
Detect a motor ove-
rheating
Detect a defect of en-
closure ventilation
Detect an electrical
leak
Threshold
Hazard < 14 slm
Hazard
≥
2000 hPa
Hazard
≥
150 °C
Hazard
≥
1.6 hPa
Hazard > 30 mA
Equipment
condition after
interlocks
activation
When the N
2
fl ow is
lower than 14 slm,
a hazard stops the
pump after 80 s
When the pressure
reaches 2000 hPa,
a hazard stops the
pump immediately
When the motor tem-
perature reaches
150 °C, a hazard
stops the pump imme-
diately
When the differen-
tial pressure in the
exhaust box reaches
1.6 hPa, a hazard
stops the pump after
80s
When the electrical
ground leak is lower
than 30 mA, the main
breaker is activated
and the pump stops
Soft message
Safety hazard: D43
Safety hazard: D42
Safety hazard: D41
D40
Safety hazard: D44
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adixen Vacuum Products - Operating instructions - A3P Series