Trouble shooting, Pump will not run, Pump runs but does not deliver rated capacity – BJM Pumps KZN(R)-F SERIES HEAVY DUTY AGITATOR TOP DISCHARGE Electric Submersible Pumps User Manual

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To automatically operate a non-automatic three phase pump, a control panel is
required.

U

Follow the instructions provided with the panel to wire the system.

U

For

automatic three phase pumps see automatic three phase wiring diagram.

Before installing a pump, make sure both of the ground leads and the power leads have
been connected properly. Once the power connections have been confirmed, then
check the pump rotation. Momentarily energize the pump, observing the directions of
kick back due to starting torque. Rotation is correct if kick back is in the opposite
direction of rotation arrow on the pump casing. If rotation is not correct, switching of any
two power leads other than ground will provide the proper rotation.

Three phase pumps DO NOT have integral motor overload protection. Pumps must be
installed in accordance with the National Electrical Code and all applicable local codes
and ordinances. Pumps are not to be installed in locations classified as hazardous in
accordance with National Electrical Code, ANSI/NFPA 70.

Connect pump to a junction box, outlet box, control box, enclosure with a wiring
compartment that meets NEC and local codes. The provision for supply connection
shall reduce the risk of water entry during temporary, limited submersion and shall
comply with the applicable requirements of the Standard for Enclosures for Electrical
Equipment, UL 50, or the standard for Metallic Outlet Boxes, UL 514A, and the standard
for Motor-Operated Water Pumps. UL 778.

TROUBLE SHOOTING

Disconnect the power source to the pump BEFORE attempting
any type of trouble shooting, service or repair.

PUMP WILL NOT RUN

1. Check power supply (fuses, breaker). Reset power.
2. Blocked impeller. Remove strainer, check and clean.
3. Defective cable or incorrect wiring.
4. Strainer clogged. Check and clean as necessary.
5. Float switch tangled/obstructed. Clean and free float switch from obstruction.
6. Float switch defective. Replace float switch.

PUMP RUNS BUT DOES NOT DELIVER RATED CAPACITY

1. Discharge line clogged, restricted or hose kinked. Check discharge hose/pipe.
2. Worn impeller and/or suction cover. Inspect and replace as necessary.
3. Pump overloaded due to liquid pumped being too thick.
4. Pumping air. Check liquid level and position of pump.
5. Excessive voltage drops due to long cables.
6. Three phase only; pump running backwards, check rotation.

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