6 Commissioning/Start-up/Shutdown
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Calio
1157.821/04-EN
6.3 Shutdown/storage/preservation
6.3.1 Shutdown
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.
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.
For prolonged shutdown periods
CAUTION
Risk of freezing during prolonged pump shutdown periods
Damage to the pump!
▷
Drain the pump and the cooling/heating chambers (if any) or otherwise protect
them against freezing.
1. Close the shut-off element in the suction line.
6.3.2 Measures to be taken for shutdown
The pump (set) remains installed
ü
Sufficient fluid is supplied for the functional check run of the pump.
1. For prolonged shutdown periods, start up the pump (set) regularly between
once a month and once every three months for approximately five minutes.
ð
This will prevent the formation of deposits within the pump and the pump
intake area.
The pump (set) is removed from the pipe and stored
ü
The pump has been drained properly (
Section 8.2, Page 60) and the safety
instructions for dismantling the pump have been observed.
1. Observe any additional instructions and information provided.
6.4 Returning to service
WARNING
Failure to re-install or re-activate protective devices
Risk of injury from moving parts or escaping fluid!
▷
As soon as the work is completed, properly re-install and re-activate any safety-
relevant devices and protective devices.
For returning the equipment to service, observe the sections on commissioning/start-
up (
Section 6.1, Page 32) and the operating limits (
In addition, carry out all servicing/maintenance operations before returning the
pump (set) to service. (
