BA series pumps
Pump – general 1401
6.4
Note
Use for higher temperatures is only permitted after consultation with the supplier.
WARNING
In the event of a malfunction or incorrect functioning, stop the pump. Determine and
correct the cause before restarting the pump.
6.5 Stopping
1. Switch off the drive motor. Observe whether the pump unit comes to a gradual, smooth stop.
2. If a barrier fluid or flushing liquid is being used, close the shut-off valves in the concerned lines.
3. When it is necessary to prevent the liquid from congealing or solidifying, drain the pump and the
vacuum pump while the medium is still in liquid form (see chapter 10).
WARNING
Use the necessary personal protective equipment in the case of hot, volatile,
flammable and hazardous liquids.
WARNING
Make sure that all the drained liquid is contained in a proper manner and disposed
of in accordance with local regulations.
4. Close the pressure shut-off valve.
Note
If a non-return valve is present and sufficient back pressure remains in the pressure pipe, it is
acceptable to leave the pressure shut-off valve open.
5. Close the suction shut-off valve.
WARNING
If there is a danger of freezing, completely drain the pump and vacuum pump (if
present). Drain the liquid from the drip tray, if present.
Note
For a longer period of disuse, the pump and vacuum pump must be completely drained and preserved
(see chapter 5).
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