Operating instructions B-Series
Version 2.4, En Page 35 of 81 21-10-2005
5.6 Valves
Provide valves on the suction and delivery side to be able to isolate the pump for maintenance.
The valves must have a straight open passage that can be fully opened to the size of the pipe passage (e.g.
slide or ball valves).
Integrated
explosion safety:
For the case of an internal explosion, which is excluded to the
extent possible, it is the responsibility of the user to decide if
technical measures (such as quick-acting valves) must be
taken to prevent and/or limit the explosion.
When the pump is in operation these valves must always be fully open.
5.7 Water shock
Avoid the sudden shutting off of the pressure line, for example: a lorry driving over a pressure line or the
sudden closing of valves so a water shock originates.
If there is a danger of water shock, fit a bypass, accumulator or a pressure safety device.
Extra point(s) for attention with ATEX pumps.
P1.
B4a
Do not expose the pump to higher pressures than which pump is suitable
according to the curve.
Protect the pump against overpressure. Set the max. pressure to 10% above the
original pump curve.
• Only with volatile and flammable liquids.
• Or with a dangerous liquid.
• (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 with overpressure) and
the resulting action (such as the stoppage of the pump) are
appropriately included in the safety circuit.
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