Operating instructions B-Series
Version 2.4, En Page 50 of 81 21-10-2005
Extra point(s) for attention with ATEX pumps.
K2.
K4.
K5.
K6c.
K7.
P2a.
P2b.
P3.
P4.
G2.
B4b.
Ensure a correct suction line in relation to the NPSH curve.
Ensure a good pipe diameter.
Ensure a good inflow opening in the suction line.
Use the correct packing. ∗
∗∗
∗
Make sure that dirt particles in piping systems cannot cause blockages.
• Fit a filter if necessary.
Prevent dirt particles in the medium (only clean filtered medium allowed)
• Only with volatile, flammable liquids.
Prevent dirt particles larger than the dirt passage of the rotor from arriving in the
suction line and pump.
Make sure that the pump (unit) is mechanically well shielded while operating.
Make sure that the pump is installed without any stresses.
Make sure that liquid supply to the pump is smooth and oxygen-free.
Protect pump against underpressure.
• Only required when pumping volatile liquid.
• Determine the max. underpressure on the basis of the NPSH line, see technical
specifications B-Series.
• (Only with Cat. 2 pumps)
8.4.3 Pressure line
•
There may be absolutely no signs of leaks.
•
Any slide valve(s) in the pressure line must be fully open.
•
Make sure that no situations originate to cause a water shock, such as the sudden closing of the
valve.
Extra point(s) for attention with ATEX pumps.
K3.
K4.
K6c.
P1.
P3.
P4.
G6.
G11.
B4a.
Ensure sufficient counterpressure on the delivery side so the pump does not run
outside the curve.
Ensure a good pipe diameter.
Use the correct packing.
Do not expose the pump to higher pressures than which the pump is suitable
according to the curve.
Make sure that the pump (unit) is mechanically well shielded while operating.
Make sure that the pump is installed without any stresses.
Make sure the pump does not pump against a closed valve.
Prevent the sudden closing of valves so a water shock originates - fit a bypass if
necessary.
Protect the pump against overpressure. Set the max. pressure to 10% above the
original pump curve.
• Only required when pumping volatile liquid.
• Or with a dangerous liquid.
• (Only with Cat. 2 pumps)
∗
∗∗
∗ With an Ex-pump (unit) supplied by BBA Pompen these aspects are ensured for the application
indicated by the client with the associated indicated medium.
Dangers relating to
the software:
It is the responsibility of the employer to ensure that the
safety measures (such as protection with overpressure) and
the resulting action (such as the stoppage of the pump) are
appropriately included in the safety circuit.
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