4/5
A 20
A3H Series dry pump range
G 03878 - Edition 04 - August 12
Internal equipment
of the pumps
The dry pumps include a cooling circuit and an inert gas purge
circuit.
Water outlet
Exhaust
Water inlet
Water
flowmeter
M4
A203
Inlet
Water
valve
Anti-suckback valve
Silencer
Roots
T
P
T
C
A803H Principle schematic
T
LP
, T
HP
: Temperature sensor of pump (alert, alarm and setpoint)
Tc : Temperature sensor of motor (alarm)
- - - - - : for
ELT
version only.
Cooling circuits
A203H Principle schematic
Water inlet
Water outlet
Exhaust
Water valve
Water
flowmeter
M4
FB203
Inlet
T
HP
Anti-suckback valve
Silencer
T
LP
T
C
adixen Vacuum Products - A3H Series Operating instructions