CAUTION
Risk of injury from entrapment of body parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. A risk
exists of minor injury to fingers and hands (e.g., hematoma), from direct contact with the vacuum
flange.
► Maintain sufficient distance to the vacuum flange during all work.
► Safely disconnect motor from the mains.
► Secure the motor against re-start.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C.
► Provide suitable touch protection.
NOTICE
Risk of damage to the drive from increased motor current consumption
At an intake pressure of approximately 300 hPa and under unfavorable operating conditions (such as
for example exhaust side counterpressure), the power input exceeds the rated current.
► Limit the maximum power input of 1.5 times the rated current to max. 2 minutes (in accordance
with EN 60034-1).
Cycle operation
Cycle operation with maximum 10 cycles per hour is possible.
Longer operating phases and short downtimes permit a functionally safe operating condi-
tion of the vacuum pump.
Operating Conditions
● The optimal operating condition of the vacuum pump is continuous operation.
● Observe the application limits prescribed by
(see chapter “Limits of use of the product”, page 15)
.
● When pumping down dry gases, no special precautions are required.
Switching on the vacuum pump
When using the supplied D-Sub mating plug, only operation at max. rotation speed is possible.
1. If required, switch the vacuum pump on in each pressure range.
2. Seal the vacuum connection.
3. Connect the control input.
4. Allow the vacuum pump to warm up prior to process start, with the vacuum connection closed, for
approx. 30 minutes.
Inspect operating fluid level
1. Regularly check the operating fluid level while the vacuum pump is running and at operating tem-
perature.
2. Make sure that the fill level is within the markings of the sight glass.
3. Check the operating fluid fill level daily during continuous operation, and every time the vacuum
pump is switched on.
7.3 Operating modes
Automatic start
After bridging the contacts at pins 8 and 9 on the connecting plug or when using a connec-
tion cable with respective bridges and applying the supply voltage, the vacuum pump starts
up immediately.
Pfeiffer Vacuum therefore recommends switching on the voltage supply immediately before
operation.
Operation
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