GB 02886 - Edition 03 - Januar
y 09
3/5
C 10
Operating modes
The sequences in case of N
2
loss will be the following ones :
As soon as pressure drops below the threshold (t=0 mn):
The yellow leds on the HHDM and in front of the pump will turn
«on».
The N
2
flow warning message (W13) is displayed HHDM.
The pump warning signal (remote control plug pins 2 and 3), the N
2
flow feedback signal (remote control plug pins 37 and 38) and the
final valve interlock signal (remote control plug pins 8 and 9) will
open.
Pump will still be running.
At the end of the warning time (t=2mn):
The red leds on the HHDM and in front of the pump will turn «on».
The N
2
flow hazard message (D13) is displayed on the HHDM.
The pump buzzer will turn on.
The pump alarm signal (remote control plug pins 4 and 5), the N
2
flow feedback signal (remote control plug pins 37 and 38) and the
final valve interlock signal (remote control plug pins 8 and 9) will
open.
Pump will still be running.
At the end of the hazard time (t=5mn): Pump stops.
Example (continued)
«N2 flow sensor» setting
The
N
2
flow sensor
parameters in the
SETTING
menu
C 42
is set at
factory as follows:
N
2
fl ow sensor
Warning time
Hazard time
2 min
Disabled
This means that the pump monitoring will not take decision to stop the
pump in case of N
2
loss or too low flow.
However all the information to handle safety operations linked to the
process gas panel are provided through the «remote control connector»
and the «safety connector».
N
2
control
operation
adixen Vacuum Products - Operating instructions - A3P Series
