Pfeiffer Vacuum HILOBE 2704, Operating Instructions Manual

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5.7 Connect the switch box
CAUTION
Electric shock and damage to the vacuum pump and electronic drive unit due to improper
connection and disconnection of components
With existing power supply connection to the switch box, there is a risk of electric shock when making
contact with the motor connecting plug. Even after the power supply has been switched off, the vac-
uum pump continues to deliver electrical energy during its run-down period. If the units are discon-
nected prematurely, there is the risk of electric shock, and destruction of electric components.
► Always interrupt the power supply connection at the switch box before connecting the power sup-
ply plug to the motor.
► With existing power supply connection to the switch box or when the pistons are running, never
disconnect the motor connecting plug.
► After switching off, wait at least another 5 minutes until the capacitors have discharged before
separating the cable connection.
1
2
3 4
5
6
7
8
10 11
12
9
Fig. 12: Connect the switch box
1 Motor connecting cable 7 Fan, inlet
2 Fan cover 8
On/off button
3 Electronic drive unit 9 "Remote" interface
4 Status LED, green 10
Stand-by button
5 Status LED, yellow 11 Mains connection
6 Status LED, red 12 Fan, outlet
Connect the motor connecting cable
► Connect the motor connecting cable to the motor.
5.8 Connect the temperature sensors and fan
The roots pump has an M 6 connecting thread on each of its two oil chambers with pre-assembled tem-
perature sensors for temperature monitoring. The respective cables are routed to the outside through a
hole in the fan covers. The second cable is provided in each case for connecting the fans.
Installation
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