4. Electrical wiring
4.1 Wiring
1.
Wire as indicated for the appropriate start system as shown in Fig-3 & 4 for single phase version and Fig-5 for three
phase.
2.
Loose connections will stop the pump. Make sure all electrical connections are secure.
3.
For three phase motors, operate the pump for a short time (1 or 2 seconds) to verify the impeller’s direction of
rotation: if its recoil is in counterclockwise direction, then it is correct. If not please switch two of the three power
cords to correct the rotation of direction of the impeller.
4.
Make sure to check the pump’s direction of rotation with the pump exposed to the atmosphere.
5.
Operating the pump with reversed rotation while in submerged condition under water will most likely damage the
pump, which may lead to leakage and electrical shock.
WARNING
Ÿ
Electrical shock hazard. Check that the cable and cable entry have not been damaged during transport
before installing the pump.
Ÿ
Never let the end of the cable touch water.
Ÿ
Use short circuit breakers to prevent danger of electrical shock.
Ÿ
Never start the pump while it is suspended, as the pump may jerk and cause serious accident involving
injury.
4.2 Cable
1.
If the cable is extended, do not immerse the splice in water.
2.
Do not pull the cable.
3.
Install the cable so that it will not overheat. Overheating is caused by coiling the cable and exposing it to direct
sunlight.
4.3 Grounding
ELECTRICAL HAZARD
Ÿ
You must ground all electrical equipment. This applies to the pump equipment, the driver and any
monitoring equipment. Test the ground lead to verify that it is connected correctly.
Ÿ
If the motor cable is jerked loose by mistake, the ground conductor should be the last conductor to
come loose from its terminal. Make sure that the ground conductor is longer than the phase
conductors. This applies to both ends of the motor cable.
Ÿ
Risk of electrical shock or burn. You must connect an additional ground fault protection device to the
grounded connectors if persons are likely to come into physical contact with the pump or pumped
liquids.
WARNING
To prevent damaging the pump and causing current leakage, which may lead to electrical shock, be sure to
install the ground wire securely.
CAUTION
To prevent electrical shock caused by improper grounding, do not connect the ground wire to a gas pipe,
water pipe, lightning rod, or telephone ground wire.
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Summary of Contents for 2KLEIN-051
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