Checking The Direction Of Rotation - KSB UPA Installation & Operating Manual

6 Commissioning/Start-up/Shutdown
NOTE
Only VDS-approved switchgear shall be used for pump sets in sprinkler
installations.
Due to the special conditions of pumps in fire protection applications, switchgear
with overcurrent relay must not be used, for example.
ü The pump set has been assembled as described in this manual.
ü The pump set has been installed as described in this manual.
ü The electric cables including control and measuring cables have been fastened
and connected in the control unit.
ü The control unit and protective equipment have been installed and set properly.
ü The pump set is completely submerged or flooded.
1. Slightly open the shut-off element on the discharge side.
2. Start up the pump set.
3. Slowly open the shut-off element until the duty point is reached.
NOTE
It is not necessary to delay the start-up of a shut-off element with electric actuator,
as the run-up time of the pump is shorter than the dead time of the shut-off
element.
6.1.1.1 Information on commissioning
CAUTION
Excessive sand content in the fluid handled
Damage to the pump set!
▷ If the sand content equals 50 g/m
▷ 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 fluid for any sand content.
ð Sand content 50 g/m
company.
ð Sand content decreases - Slowly open the shut-off element further until the
duty point is reached.

6.1.2 Checking the direction of rotation

DANGER
Uncontrolled backflow of the fluid handled turning the magnet rotor in the UMA-
S 150, UMA-S 200 and UMA-S 250 submersible motor
The rotating permanent magnet rotor may generate an electric current at the
motor lead ends!
Danger of death from electric shock!
▷ Take suitable precautions to prevent any inadvertent rotation caused by
uncontrolled backflow of the fluid handled.
▷ Make sure the motor cannot be rotated inadvertently.
▷ Observe the safety regulations that apply to work involving electrical hazards.
Verify that the equipment is de-energised.
UPA / UPA S
3
or more, switch off the pump set.
3
- Switch off the pump set. Inform the well building
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