KSB Magnochem-Bloc, Installation & Operating Manual

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6 Commissioning/Start-up/Shutdown
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Magnochem-Bloc
CAUTION
Excessive barrier fluid pressure
Damage to the bearings!
▷
Comply with the operating data indicated in the data sheet.
ü The system piping has been cleaned.
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.
ü Any auxiliary lines have been opened.
1. Fully open the shut-off element in the suction head line / suction lift line.
2. Close or slightly open the shut-off element in the discharge line.
3. Wait for at least one minute before the next step is performed.
DANGER
Excessive temperatures due to asynchronous operation of the magnetic coupling
Explosion hazard!
Risk of burns!
▷
Switch off the pump set immediately.
▷ Eliminate the cause.
▷ Adhere to the starting method indicated in the data sheet.
(
ð Section 5.6, Page 28)
NOTE
Pump run-up and motor run-up must be synchronous. Overloading, overheating or
non-compliance with the design data may cause the inner and the outer rotor to
drop out of synchronisation. Signs of asynchronous operation:
- Insufficient discharge head
- Noises inside the drive
NOTE
The pump must deliver fluid immediately after start-up. If fluid is not delivered
immediately, switch off the pump and repeat the venting procedure.
4. Start the motor and stop after 2-3 seconds or after it has reached its max. speed
in the case of soft starting /frequency inverter starting.
5. After the pump set has come to a standstill, wait for 10 seconds.
6. Repeat this procedure (starting, stopping and waiting until the pump set has
come to a standstill) five times.
7. Start up the motor.
Verify synchronous operation of pump and electric motor.
8. When there is a pressure reading on the pressure gauge, open the gate valve in
the discharge line until the correct duty point is reached.
6.1.7 Shutdown
ü
The shut-off element in the suction line is and remains open.
1. Close the shut-off element in the discharge line.
2. Switch off the motor and make sure the pump set runs down smoothly to a
standstill.