Amarex KRT series, Installation And Operating Manual, Page: 49 / 124

6 Commissioning/Start-up/Shutdown
49 of 124
Amarex KRT
WARNING
Abnormal noises, vibrations, temperatures or leakage
Damage to the pump!
Risk of personal injury!
▷ Switch off the pump (set) immediately.
▷ Eliminate the causes before returning the pump set to service.
ü The pump, suction line and inlet tank, if any, 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.
6.1.4 Shutdown (dry installation only - installation type D)
ü The shut-off element in the suction line is and remains open.
1. Switch off the motor.
2. Immediately after having switched off the motor, close the shut-off element in
the discharge line.
NOTE
If the discharge line is equipped with a non-return or check valve, the shut-off
element may remain open provided that the system conditions and system
regulations are considered and observed.
For prolonged shutdown periods:
1. Close the shut-off element in the suction line.
2. Close any auxiliary lines.
CAUTION
Danger of freezing!
Damage to the pump set!
▷ Drain the pump set or protect it against freezing.