6 Commissioning/Start-up/Shutdown
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EtaLine Pro
1168.87/01-EN
NOTE
Note that the insulation resistance of dry windings that have been reconditioned or
cleaned is lower when the winding is warm. The insulation resistance can only be
evaluated correctly after converting to the reference temperature of 25°C.
The insulation resistance of the stator winding must equal at least 1.5 megohms for
motors with a rated voltage of 220 - 1000 V.
6.1.4 Priming and venting the pump
DANGER
Formation of a potentially explosive atmosphere inside the pump
Explosion hazard!
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Before starting up the pump set, vent the pump and suction line and prime
both with the fluid to be handled.
CAUTION
Increased wear due to dry running
Damage to the pump set!
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Never operate the pump set without liquid fill.
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Never close the shut-off element in the suction line and/or supply line during
pump operation.
1. Vent the pump and suction line and prime both with the fluid to be handled.
Connection 6D can be used for venting (see drawing of auxiliary connections).
For vertical installation with the motor on top, use connection 5B (if provided)
for venting (see drawing of auxiliary connections).
2. Fully open the shut-off element in the suction line.
3. Fully open all auxiliary feed lines (barrier fluid, flushing liquid, etc.), if any.
4. Open the shut-off element, if any, in the vacuum balance line and close the
vacuum-tight shut-off element, if any.
WARNING
Hot water escaping under pressure when the vent plug is opened
Risk of electric shock!
Risk of scalding!
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Protect the electric components against escaping fluid.
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Wear protective clothing (e.g. gloves).
NOTE
For design-inherent reasons some unfilled volume in the hydraulic system cannot be
excluded after the pump has been primed for commissioning/start-up. However,
once the motor is started up the pumping effect will immediately fill this volume
with the fluid handled.
