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10 Operation
10.3 During operation
Requirement:
ü
Pump unit set up correctly
ü
Coupling aligned correctly
Ä
ü
Connections connected sealingly
ü
Motor connected correctly
ü
Pipe system is free of impurities
ü
Safety valve in accordance with EN ISO 4126-1 installed in the pressure-side pipe system before
the first shut-off device
ü
Pump filled with pumped liquid
ü
Shut-off devices in the suction line and pressure line opened
1.
Switch on the pump unit.
ð
The pump delivers when the pressure on the pressure side of the pump rises or a flow indic-
ator at the system side triggers.
2.
If the pump does not deliver after 10 – 15 seconds of operation, abort commissioning. Eliminate
the cause for the fault and only then continue with commissioning. Take the information from the
fault table into account
3.
Run the pump for a few minutes to allow the pipe system to vent fully.
ð
The pipe system is fully vented when the pump operating noise is smooth and a pressure
gauge on the pressure side shows no more fluctuations.
4.
Check the function of the overflow valve
10.3 During operation
10.3.1
Checking the operating pressure
Personnel qualification:
o
Trained personnel
bar
bar
Fig. 14: Pressure gauge shut-off valves closed/open - principle diagram
ATTENTION
Leak in the pressure gauge through permanently opened pressure gauge shut-off valve.
► Close the pressure gauge shut-off valve immediately after completing reading.
1.
Open the pressure gauge shut-off valve.
2.
Read the operating pressure and close the pressure gauge shut-off valve.
10.3.2
Monitoring filters and/or strainers
Notice
The manufacturer recommends protecting the pump against soiling by means of a filter and/or strainer
installed at the system end (mesh width 0.5 mm). The degree of soiling of the filter and/or the strainer
can be monitored by means of a suction-side pressure gauge or a differential pressure indicator.
Personnel qualification:
o
Trained personnel
1.
After commissioning monitor the degree of contamination of the filter and/or strainer by means of
a suction-side pressure gauge or a differential pressure indication.
2.
Additionally check the filters and/or strainers at a pressure drop on the suction side. Observe the
dimensioning data of the manufacturer of the filters/strainers.
3.
Check the suction-side pressure every two weeks during running operation.
10.3.3
Setting the overflow valve (optional)
Set the overflow valve
10.3.4
Switching off the pump unit
Personnel qualification:
o
Trained personnel
26
OIC 18en-GB Edition 2020-01
Operating instructions