24
OIC 12en Edition 08/2016
Operating Instructions
During operation
Operation
1. Switch on the pump.
The pump delivers when the pressure on the pressure side of the pump rises or a flow indicator at
the system side triggers.
2. If the pump does not deliver after 10 – 15 seconds of operation, abort commissioning, establish the
cause of the fault and only then continue the commissioning procedure. Follow the instructions in the
fault table, see "Troubleshooting", page 32.
3. Run the pump for a few minutes to allow the pipe system to vent fully.
The pipe system is fully vented when there is a smooth operating noise and a pressure gauge on the
pressure side of the pump shows no more fluctuations.
During operation
Checking the operating pressure
► Open the pressure gauge stopcock, read the operating pressure, close the pressure gauge stop-
cock.
Switching off the pump
1. Switch off the motor.
2. Close the pressure and suction-side shut-off devices.
Decommissioning the pump
► Carry out the following measures during operation interruptions:
Fig. 7
Principle diagram: Open pressure gauge
stopcock
Fig. 8
Principle diagram: Close the pressure
gauge stopcock
bar
bar
CAUTION
Pressure gauge stopcocks that are opened permanently can result in the pressure gauges leaking.
► Close the pressure gauge stopcocks after completing reading.
CAUTION
Damage to seals through pressurizing of the pump while it is standing still.
► Ensure that while the pump is at a standstill, the pressure in the pump does not exceed the inlet
pressure during operation.
WARNING
Risk of injury or poisoning through emitted pumped liquid.
► Wear protective equipment during all the work.
► Collect the emitted pumped liquid safely and dispose of it in an environmentally compatible man-
ner.