Stübbe ETLB-S series, Original Operating Manual

Page: 16 / 33

Operation
6 Operation
6.1 Preparing for commissioning
6.1.1 Check downtimes
Check downtimes ( ĺ 6.4 Restoring the pump to service,
Page 18).
6.1.2 Filling and bleeding
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Use protective equipment for any work on the pump.
Collect leaking liquid safely and damage
¿ tting in accor-
dance with local regulations.
1. Close the pressure-side ¿ tting.
2. Fill pump and, if present, suction pipe with À uid.
Ensure minimum ¿ lling height when doing so
3. Verify that no pipe connections are leaking.
6.2 Commissioning
6.2.1 Switching on
Pump set up and connected properly
Motor set up and connected properly
All connections stress-free and sealed
All safety equipment installed and tested for functionality
Pump prepared,
¿ lled and vented correctly
Container is ¿ lled suf ¿ ciently up to minimum height “Z”
( ĺ 9.2.4 Filling heights and installation dimensions,
Page 31).
DANGER
Risk of injury due to running pump!
Do not touch the pump when it is running.
Do not carry out any work on the pump when it is running.
Allow the pump to cool down completely before starting any
work.
DANGER
Risk of injury and poisoning due to pumped liquid spray-
ing out!
Use personal protective equipment when carrying out any
work on the pump.
NOTE
Risk of cavitation if suction À ow is restricted!
Open the suction-side ¿ tting and do not use it to regulate
the À ow.
Do not open the pressure-side ¿ tting beyond the operating
point.
NOTE
Material damage due to overheating.
Do not operate the pump for long periods with the pressure-
side
¿ tting closed.
Observe minimum À ow ( ĺ order data sheet).
1. Open the suction-side ¿ tting.
2. Close the pressure-side ¿ tting.
3. Switch on the motor and check it for smooth running.
4. Once the motor has reached its nominal speed, open
the pressure-side ¿ tting slowly until the operating point is
reached.
5. Make sure temperature change is smaller than 5 K/min for
pumps with hot À uids.
6. After the initial stress due to the pressure and operating
temperature, check that the pump is not leaking.
16 ETLB-S, ETLB-ST BA-2018.01.25 EN 301 356