G 03878 - Edition 04 - August 12
5/5
A 20
A3H Series dry pump range
Exhaust
FB203
Inlet
Anti-suckback valve
Silencer
Roots
Standby
valve
Stop
valve
Pressure
regulator
Manometer
Mass
flowmeter
Calibrated
jets
Anti-suckback
valves
Pressure
sensor
N
2
Inlet
M4
HP
HP
LP
LP
LP
N
2
purge circuit
Principle schematic
Water inlet
Water outlet
Exhaust
Water flowmeter
Water
valve
FB203
Inlet
Silencer
Anti-suckback valve
Frequency
converter
Roots 1803
T
HP
T
C1
T
C2
Frequency
converter
T
LP
T
LP
, T
HP
: Temperature sensor of pump (alert, alarm and setpoint)
Tc : Temperature sensor of motor (alarm)
- - - - - : for
ELT
version only.
Cooling circuits (con’t)
A1503H - A1803H Principle
schematic
adixen Vacuum Products - A3H Series Operating instructions