● sealing the gap between the intake and exhaust channel, and between the vanes and the working
chamber
● ensuring an optimal temperature balance through heat transfer
3.1.2 Cooling
The rotary vane pump is cooled by thermal radiation from its surface, the air flow of the two fans and the
pumped gas.
3.2 Connections
The supplied D-Sub mating plug has bridged pins 8 and 9. This enables the vacuum pump to be started
and stopped directly by switching the voltage supply on and off. When the D-Sub mating plug is used,
the vacuum pump always runs at maximum rotation speed.
Connection
Description
remote
D-sub socket with 9 pins for connection and configuration of a remote control.
Tbl. 4:
Connection description of the electronic drive unit
3.3 Identifying the product
► To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
► Observe the motor-specific data on the motor rating plate attached separately.
3.4 Product features
Pump type
Characteristics
Hena 50
● Nominal pumping speed max. 50 m
3
/h
● Vacuum and exhaust connection with small flange
● Electronic drive unit
Hena 70
● Nominal pumping speed max. 70 m
3
/h
● Vacuum and exhaust connection with small flange
● Electronic drive unit
Tbl. 5:
Features of the rotary vane pumps
3.5 Scope of delivery
● Rotary vane vacuum pump with motor
● Operating fluid
● Locking caps for vacuum and exhaust connection
● D-Sub mating plug
● Operating instructions
Product description
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