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9
Monitoring during operation
1. During operation check the pump regularly for correct functioning, smooth and vibration-free
running abnormal noises and leaks.
2. If the pump has pumped for a long time without having moved water, the pump housing must
be filled with water, because the cups are dry after having run dry for a long time.
3. Check whether the gland packing is leaking; it must be adjusted so one drop of water drips
every five seconds. Loosen the gland packing a bit if it drips more slowly and tighten it a bit if
it drips more quickly.
4. The maximum permissible ambient temperature is 40 °C. The temperature of the bearings
may not exceed 110 °C.
Note
Use for higher temperatures is only permitted after consultation with the supplier.
WARNING
In the event of a problem or incorrect functioning, stop the pump. Determine and
correct the cause before restarting the pump.
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