Flowlight Booster Pump Instruction Manual

TROUBLESHOOTING

BEFORE YOU CALL FOR HELP,

TRY TO LOCATE YOUR PROBLEM HERE:

Please note the terms “Front” and “Rear” -- See P. 1 illustration

PUMP WILL NOT FIT INTO YOUR 6" DRILLED WELL CASING: Close Elbow fittings are

required (Dankoff Solar Item #20308).

PUMP DOESN'T TURN ON -- NO POWER: (1) CHECK DRY RUN SWITCH on front of pump,

if present. Press red button to reset. Correct the cause of dry run. (2) CHECK FUSE or

BREAKER and any control or wiring devices in line. (3) MOTOR STARTS WHEN YOU HIT IT:

Sticking brushes -- "Motor Brush Problems" (4) Remove rear cover of motor to check

connections there. Check for voltage present at motor. If voltage is present, see next entry. (5)

CHECK THERMAL OVERLOAD SWITCH on rear of motor. Bypass it by holding a piece of wire

across its terminals. If motor runs (and is not hot) replace thermal switch. DRY RUN SWITCH

may be tested the same way.

PUMP SPINS BUT DOESN'T PUMP WATER: (1) CHECK DIRECTION of rotation. If not

clockwise (viewed from brass front-end) reverse polarity. (2) CHECK PRIME: Open priming

plug or valve (see instructions). Pour water in. LOSS OF PRIME/INTAKE PIPE LEAKAGE:

CHECK ALL FITTINGS -- a pinhole leak in suction pipe will cause loss. FOOT VALVE may

leak. Inspect, pressure-test, clean or replace. Debris may be stuck in foot valve causing leak if

not protected by fine screen or intake filter. REGARDING POLYTHYLENE PIPE FITTINGS: If

pipe does not stretch tightly over fittings, it may leak. Gently heat with torch or hot water and

retighten hose clamp WITH WRENCH. Replace stripped clamps. Use ALL-STAINLESS

clamps.

NOISY PUMP:

NOISE = CAVITATION = RAPID PUMP WEAR

FIX THE PROBLEM!

STEADY BUZZING SOUND Indicates EXCESSIVE SUCTION due to any combination of (1)

HIGH SUCTION LIFT -- mount pump as low as possible, (2) UNDERSIZED SUCTION PIPE, (3)

CLOGGED FILTER -- NOTE: Fiber filter cartridges may be clogged and LOOK CLEAN (fine silt

is hidden within the fibers). (4) CLOGGED INTERNAL INTAKE SCREEN. See next two entries.

(5) SOFT, FLEXIBLE HOSE used on intake line may be crushed or kinked by suction -- replace

with more rigid pipe material.

UNSTEADY BUZZING SOUND Indicates LEAK IN SUCTION LINE allowing AIR to enter. (1)

Check for bubbles in in-line (transparent) filter or air in outlet water. (2) See LOSS OF PRIME in

above entry. (3) If you have IN-LINE FILTER with red Pressure Relief Valve (red button) on top,

and it is mounted several feet above water source, air may be drawing in around the valve.

SEAL AROUND THE VALVE with silicone sealant or epoxy glue OR unscrew the red button and

replace it with a nut, tightened. (4) If no source of air leakage is present, water may have high

concentration of DISSOLVED GASSES which release as bubbles in suction pipe. Reduce

suction lift if possible. Install air chamber in intake line, with valve on top. Pour water in to

replace air when problem reappears. (5) Turn filter to a horizontal position. This allows bubbles