2. Check the coupling alignment; re-align the coupling, if required. (
3. Check that the coupling and shaft can easily be rotated by hand.
4. Re-install the coupling guard and step guard, if any.
5. Check the distance between coupling and coupling guard.
The coupling guard must not touch the coupling.
6.1.5 Start-up
DANGER
The permissible pressure and temperature limits will be exceeded if the pump is
operated with the suction and discharge lines 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 gate valve 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 specified. (
▷
Always operate the pump within the permissible operating range.
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 filled with the
fluid to be pumped.
✓
The filling and venting lines have been closed.
CAUTION
Start-up against open discharge line
Overloading of the motor!
▷
Use a soft starter.
▷
Use speed control.
▷
Make sure the power reserve of the motor is sufficient.
1. Fully open the shut-off valve in the suction head/suction lift line.
2. Close or slightly open the shut-off valve in the discharge line.
3. Switch on 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
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Etanorm
