6.2.5
Frequency of starts
CAUTION
Excessive frequency of starts
Damage to the motor!
▷
Never exceed the specified frequency of starts.
To prevent high temperature increases in the motor and excessive loads on the
motor, seals and bearings, the frequency of starts shall not exceed 10 start-ups per
hour and 5000 start-ups per year.
These values apply to mains start-up (DOL or with star-delta contactor,
autotransformer, soft starter). These limits do not apply to frequency inverter
operation.
CAUTION
Re-starting while motor is still running down
Damage to the pump set!
▷
Do not re-start the pump set before it has come to a standstill.
▷
Never start the pump set while the pump is running in reverse.
6.2.6
Frequency inverter operation
Frequency inverter operation of the pump set is permitted in the frequency range
from 25 to 60 Hz.
6.3 Shutdown/storage/preservation
6.3.1
Measures to be taken for shutdown
The pump set remains installed
WARNING
Unintentional starting of pump set
Risk of injury by moving parts!
▷
Make sure that the pump set cannot be started up unintentionally.
▷
Always make sure the electrical connections are disconnected before carrying
out work on the pump set.
WARNING
Fluids posing a health hazard and/or hot fluids
Risk of personal injury!
▷
Observe all relevant laws.
▷
When draining the fluid take appropriate measures to protect persons and the
environment.
▷
Decontaminate pumps which handle fluids posing a health hazard.
CAUTION
Danger of frost/freezing
Damage to the pump set!
▷
If there is any danger of frost/freezing, remove the pump set from the fluid
handled and clean, preserve and store it.
✓
Make sure sufficient fluid is available for the operation check run of the pump
set.
6 Commissioning/Start-up/Shutdown
Amacan P
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