KSB UPA - Information on Commissioning; Checking the Direction of Rotation

6.1.1.1 Information on commissioning
CAUTION
Excessive sand content in the water
Damage to the pump set!
▷ If the sand content equals 50 g/m
3
or more, switch off the pump set.
▷ Inform the well building company.
1. When commissioning pump sets in new boreholes, initially only operate the
pump set for approximately 10 minutes with the shut-off element slightly open.
2.
Check escaping water for any sand content.
⇨ If the sand content equals 50 g/m
3
or more, switch off the pump set and
inform the well building company.
⇨ If the sand content decreases, slowly open the shut-off element until the
duty point is reached.
6.1.2 Checking the direction of rotation
CAUTION
Wrong direction of rotation
Damage to the motor!
▷ Do not run the pump set for more than two minutes when checking the
direction of rotation.
CAUTION
Uncontrolled backflow of the fluid from the riser
Damage to the pump set!
▷ Prevent any uncontrolled backflow of the fluid handled with suitable means.
▷ Make sure that backflow of the fluid handled is slow and controlled, so that the
pump rotor does not start to rotate, e.g. by throttling the discharge-side gate
valve accordingly.
✓ The back-up name plate has been attached at the place of installation of the
submersible borehole pump.(⇨ Section 4.6 Page 18)
✓ The pump set has been installed completely.
✓ The power cable and the measuring and control cables, if any, have been
connected in the control cabinet.
✓ The shut-off element in the discharge line is slightly open.
1.
Switch on the motor at the control cabinet.
2. As soon as the system has reached a steady state, read off the pressure and/or
flow rate from the pressure gauges.
3. Verify the read data against the data on the back-up name plate.
⇨ If the values are almost identical, the direction of rotation is correct.
⇨ If the read values are too low, the direction of rotation is incorrect.
4. If the direction of rotation is incorrect, switch the motor off at the control
cabinet.
5. Have the phase sequence (U, V, W) corrected on the motor connection side in
the control cabinet by a trained electrician.
6 Commissioning/Start-up/Shutdown
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