6 Commissioning/Start-up/Shutdown
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Amacan P
The mains voltage and mains frequency may fluctuate around the rated values as
defined for zone B to IEC 60034-1. The voltage difference between the individual
phases must not exceed 1 %.
6.2.2 Frequency of starts
CAUTION
Excessive frequency of starts
Risk of 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, seal elements and bearings, the frequency of starts shall not exceed 10 starts
per hour.
These values apply to mains start-up (DOL or with star-delta contactor,
autotransformer, soft starter). This limitation does not apply to operation on a
frequency inverter.
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.
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Never start up the pump set while the pump is running in reverse.
6.2.3 Operation on a frequency inverter
DANGER
Operation outside the permitted frequency range
Explosion hazard!
▷
Never operate an explosion-proof pump set outside the specified range.
Frequency inverter operation of the pump set is permitted in the frequency range
from 25 to 50 Hz.
6.2.4 Fluid handled
6.2.4.1 Temperature of the fluid handled
The pump set is designed for transporting liquids. The pump set is not operational
under freezing conditions.
CAUTION
Danger of freezing!
Damage to the pump set!
▷
Drain the pump set or protect it against freezing.
Refer to the maximum permissible fluid temperature and ambient temperature
indicated on the name plate and/or in the data sheet.
6.2.4.2 Density of the fluid handled
The pump input power changes in proportion to the density of the fluid handled.
