6.1.5 Shutdown
CAUTION
Backflow of the fluid handled
Motor or winding damage!
Excessive reverse runaway speed of the motor!
▷ Observe the permissible reverse runaway speed of the motor. See the
manufacturer's product literature included with the supplied documentation.
▷ Close the shut-off elements.
✓ 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.
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!
Hot or toxic fluid could escape!
▷ Comply with the operating data indicated in the data sheet.
▷ Never use the pump for handling fluids it is not designed for.
▷ Avoid prolonged operation against a closed shut-off element.
▷ Never operate the pump at temperatures, pressures or rotational speeds
exceeding those specified in the data sheet or on the name plate unless the
written consent of the manufacturer has been obtained.
6.2.1 Maximum operating pressure
CAUTION
Permissible operating pressure exceeded
Damage to connections and seals!
▷ Never exceed the operating pressure specified in the data sheet.
6 Commissioning/Start-up/Shutdown
Omega / Omega V
43 of 94
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