6.1.3 Start-up
DANGER
Non-compliance with the permissible pressure and temperature limits if the pump is
operated with the suction and/or discharge line closed.
Explosion hazard!
Leakage of hot or toxic fluids!
▷ Never operate the pump with the shut-off elements in the suction line and/or
discharge line closed.
▷ Only start up the pump set with the discharge-side shut-off element slightly or
fully open.
DANGER
Excessive temperatures due to dry running or excessive gas content in the fluid
handled
Explosion hazard!
Damage to the pump set!
▷ Never operate the pump set without liquid fill.
▷ Prime the pump as per operating instructions.
▷ Always operate the pump within the permissible operating range.
WARNING
Pump sets with high noise levels
Damage to hearing!
▷ Persons must only enter the vicinity of the running pump set if they are wearing
protective equipment/ear protection.
▷ See noise characteristics. (⇨ Section 4.6 Page 20)
CAUTION
Abnormal noises, vibrations, temperatures or leakage
Damage to the pump!
▷ Switch off the pump (set) immediately.
▷ Eliminate the causes before returning the pump set to service.
✓ The system piping has been cleaned.
✓ Pump, suction line and inlet tank, if any, have been vented and primed with the
fluid to be pumped.
✓ The lines for priming and venting have been closed.
CAUTION
Start-up against open discharge line
Motor overload!
▷ Make sure the motor has sufficient power reserves.
▷ Use a soft starter.
▷ Use speed control.
1. Fully open the shut-off element in the suction head/suction lift line.
2. Close or slightly open the shut-off element in the discharge line.
3. Start up the motor.
4. Immediately after the pump has reached full rotational speed, slowly open the
shut-off element in the discharge line and adjust it to comply with the duty
point.
6 Commissioning/Start-up/Shutdown
Omega / Omega V
41 of 94
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