Operating instructions B-Series
Version 2.4, En Page 55 of 81 21-10-2005
8.8 Checks during operation
Ensure the smooth and vibration-free running of the pump/pump unit. The dry running of the pump must
absolutely be avoided. In optimal circumstances ensure mechanical shaft seals display only low or barely
visible (vapours) leakage. Running against a closed valve for a longer period is not permitted.
The maximum permissible ambient temperature amounts to 40°C. The temperature of the bearings can,
measured on the motor or pump housing, be up to 50°C above the ambient temperature (depending on the
application and if the pump is fitted in an explosion dangerous space). It may not rise to above 85°C.
Application for higher temperatures is only allowed after consultation with the supplier.
Extra point(s) for attention with ATEX pumps.
B5.
Protect pump against temperature.
• (Only with Cat. 2 pumps)
Dangers relating to
the software:
It is the responsibility of the employer to ensure that the
safety measures (such as protection against temperature) and
the resulting action (such as the stoppage of the pump) are
appropriately included in the safety circuit.
Again check the following points during operation:
Extra point(s) for attention with ATEX pumps.
P1.
G1.
G2.
G5.
G6.
G9.
G10.
G11.
S1.
S5b.
S6.
S7.
B2a.
S5a.
Do not expose the pump to higher pressures than which the pump is suitable
according to the curve.
Prevent the pump being exposed to temperatures below freezing point if it is
filled with liquid.
Make sure that liquid supply to the pump is smooth and oxygen-free.
Prevent the pump from dry running.
Make sure the pump does not pump against a closed valve.
Make sure that the mechanical shaft seal cooling/lubrication is in good working
order.
Ensure sufficient coolant.
Prevent the sudden closing of valves so a water shock originates.
Regularly check the packing for leaks.
Check the coolant level (according to EN 13463-5:2003 §5.4).
Check for bearing leaks.
If a leak occurs to the mechanical shaft seal: stop the pump.
Ensure regular checks for leakage and adjust if necessary.
Check the oil level (only with oil-lubricated bearings)
To guarantee operating reliability the installed stand-by pumps must be brought into operation once a
week by briefly switching on and off.
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