6 Commissioning/Start-up/Shutdown
43 of 80
HPK
1121.8/06-EN
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. (ðSection6.1.4,Page40)
▷ 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.
ü The system piping has been cleaned.
ü The pump, suction line and, if applicable, inlet tank have been vented and
primed with the fluid to be handled.
ü 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.
CAUTION
Misalignment of pump and coupling
Damage to pump, motor and coupling!
▷ When the operating temperature has been reached, switch off the pump set
and check the coupling alignment.
5. Check the coupling alignment and re-align the coupling, if required.
6.1.12 Checking the shaft seal
Mechanical seal The mechanical seal only leaks slightly or invisibly (as vapour) during operation.
Mechanical seals are maintenance-free.
Double mechanical seal
To Next Page
Loading...
Need help?
General
