KSB Etaprime L, Installation & Operating Manual

Page: 35 / 76

6 Commissioning/Start-up/Shutdown
35 of 76
Etaprime L
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 a liquid fill.
▷ Prime the pump as per operating instructions.
(
ð
Section 6.1.3, Page 33)
▷ 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 has been vented and primed with the fluid to be handled.
ü The lines for priming and venting have been closed.
ü
If a check valve is installed in the suction line:
The volute casing and the suction line have been primed with the fluid to be
handled.
ü The pump can be started up against a closed valve.
ü
If no check valve is installed in the suction line:
The volute casing has been primed with the fluid to be handled.
ü
No back pressure on the discharge side.
ü The shut-off element is open.
CAUTION
Start-up against open discharge line
Motor overload!
▷ Make sure the motor has sufficient power reserves.
▷ Use a soft starter.
▷ Use speed control.
DANGER
Seal leakage at operating temperature
Hot or toxic fluid may escape!
▷ Once the operating temperature has been reached, re-tighten the hexagon
nuts at the casing/discharge cover.
▷ Check the coupling alignment. Re-align the coupling if required.
1.
When the operating temperature has been reached and/or in the event of
leakage, switch off the pump set and re-tighten the screwed connections
between lantern and casing.
2.
Check the coupling alignment and re-align the coupling, if required.
Priming time
For a 1-metre horizontal length of the suction line and DN suction line = DN pump,
the priming times are as follows.