Setup and connection
5.4.5 Disc ha rg ing leaks
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Safely collect any leaking pumped liquid, then discharge
and dispose of it in accordance with en vironmental regula-
tions.
1. Provide equipment for collecting and discharging lea k ing
liquids.
2. Ensure the free discharge of leaking liquids.
5.4.6 Avoiding excessive pressure
WARNING
Risk of injury due to excessive pressure!
If no pressure relief valve is present: Provide an appropri-
ate safety valve in the pressure lin e.
NOTE
Material damage due to overheating of the pump!
If the return flow of the pressure relief valve flows directly
into the pump suction side or suction line: Monitor the tem-
perature.
1. Observe the o perating instructi ons of the manufacturer.
2. Make sure the factory setting of the pressure relief valve
meets the requirements of the system.
3. Do not feed the return flow of the safety valve directly back
into the suction pipe.
5.4.7 P roviding safety and control devices
(recommended)
Avoid impurities
Only necessary if no filter is installed.
1. Install a dirt trap in the suction pipe (mesh s ize of 0.6 mm).
2. To monitor impurities, install a differential pressure gauge
with contact manometer.
3. Provide a fine filter if necessary:
– Select the filter mesh, depending o n the type , level of
contamination and pumping pressure
Avoiding reverse running
Install a non-return valve betwe en the outlet flang e and the
gate valve to ensure the liquid does not flow back when the
pump is switched off.
Enabling venting
Provide a vent valve on the highest pre ssure l ine p osition.
Making provisions for isolating and shutting off pipes
For maintenance and repair work.
Provide shut-off devices in the suction and pressure pipes.
Allowing measurement of the operating conditions
1. Provide manometers for pressure measurements in the
suction and pressure pipes.
2. Provide for su ction-side temperature measu rements.
Monitoring leaks
Only necessary for hot or haza rdous pumped liquids.
1. Provide leak monitoring equipment.
2. Safely collect any leaking pumped liquid (e.g. following a
seal malfunction) and dispose of it.
Heating up the pumped liquid
Only necessary for pumped liquids that solidify when cold
(e.g. heavy heating oil).
1. Provide he ating for th e pumped liquid or the sucti on pipe.
2. Dimension the heating to ens ure that the pumped liquid is
guaranteed to be in a liquid state, even when the pump
starts up.
16 SPF series BA-2014.01 626.0005 GB – 550 041
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