Operating Limits - Speck pumpen Normblock Installation & Operating Manual

6 Commissioning/Start-up/Shutdown
6.1.5 Shutdown
CAUTION
Heat build-up inside the pump
Damage to the shaft seal!
▷ Depending on the type of installation, the pump set requires sufficient after-
run time – with the heat source switched off – until the fluid handled has
cooled down.
✓
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.
NOTE
If the discharge line is equipped with a check valve, the shut-off element in the
discharge line may remain open, provided the site's requirements and regulations
are taken into account and observed.
For prolonged shutdown periods:
1. Close the shut-off element in the suction line.
2. Close the auxiliary connections.
If the fluid handled is fed in under vacuum, also supply the shaft seal with
barrier fluid during standstill.
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.

6.2 Operating limits

DANGER
Non-compliance with operating limits for pressure, temperature, fluid handled and
speed
Explosion hazard!
Leakage of hot or toxic fluid handled!
▷ Comply with the operating data indicated in the order documentation.
▷ Never use the pump to handle fluids it is not designed for.
▷ Avoid prolonged operation against a closed shut-off element.
▷ Never operate the pump at temperatures, pressures or speeds exceeding those
specified in the order documentation or on the name plate unless the written
consent of the manufacturer has been obtained.
6.2.1 Ambient temperature
CAUTION
Operation outside the permissible ambient temperature
Damage to the pump (set)!
▷ Observe the specified limits for permissible ambient temperatures.
Observe the following parameters and values during operation:
Normblock
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