8.4.3 Normal operation
The vacuum pump starts in boost mode for max. 5 minutes with the maximum speed. The current is
monitored at the same time. If the current is below a threshold value, the speed is controlled down to
nominal rotation speed. In case the power input increases again, automatic increase of the speed does
not take place. An increase in speed is reached again after vacuum pump stop / start.
Setting the related parameters
1. Set the parameter
[P:002]
to "0".
2. Set the parameter
[P:026]
to "0".
3. Check the set rotation speed (parameter
[P:308]
).
8.5 Pumping condensable vapors
Vapors or moisture from pumped media impair the throughput after condensation in the vacuum pump.
WARNING
Risk of explosion from reactive, explosive or other hazardous gas / air mixtures.
Uncontrolled inlet of gas at the flushing gas nozzle leads to sparks generated mechanically following
diaphragm rupture, hot surfaces or to explosive gas / air mixtures in the vacuum system caused by
static electricity.
► If necessary, use inert gas for supplying the flushing gas in order to avoid a potential ignition.
CAUTION
Risk of poisoning due to toxic process gases escaping
For intake pressures > 500 hPa, process gas may escape from the flushing gas nozzle.
► If necessary, use an extraction line.
Required tool
● Allen key,
WAF 5
1
2
3
Fig. 9:
Mounting the flushing gas nozzle
1 Locking screw, G 1/8"
3
Seal
2 Flushing gas nozzle (0.3 mm)
Mounting the flushing gas nozzle
Using the optional flushing gas nozzle improves the discharge of condensate, and the pump achieves
the specified final vacuum more quickly.
1. Screw in the flushing gas nozzle instead of the locking screw.
2. Bring the vacuum pump to operating temperature before starting the process.
3. Continue to operate the vacuum pump approx. 30 minutes after finishing the process before
switching it off.
Operation
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