6 Commissioning/Start-up/Shutdown
38 of 84
Amarex N
2563.84/08-EN
CAUTION
Start-up against a closed shut-off element
Increased vibrations!
Damage to mechanical seals and bearings!
▷
Never operate the pump set against a closed shut-off element.
1. Fully open the discharge line shut-off element, if any.
2. Start up the pump set.
6.2 Operating limits
DANGER
Non-compliance with operating limits
Damage to the pump set!
▷
Comply with the operating data specified in the data sheet.
▷
Never operate an explosion-proof pump set at ambient temperatures or fluid
temperatures exceeding those specified in the data sheet and/or on the name
plate.
▷
Never operate the pump set outside the limits specified below.
6.2.1 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, do not exceed the following
number of start-ups per hour.
Table 15:
Frequency of starts
Interval
Maximum frequency of starts
[Start-ups]
Per hour
30
Per year
5000
These values apply to mains start-up (DOL, autotransformer, soft starter). This
limitation does not apply to operation on a frequency inverter.
6.2.2 Operation on the power supply mains
DANGER
Permissible tolerances for operation on mains power exceeded
Explosion hazard!
▷
Never operate an explosion-proof pump (set) outside the specified range.
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 %.
Summary of Contents for Amarex N series
Page 80: ...Index 80 of 84 Amarex N 2563 84 08 EN W Warnings 7 Warranty claims 6...
Page 81: ......
Page 82: ......
Page 83: ......