Flowlight Booster Pump Instruction Manual

MAINTENANCE

INTERNAL INTAKE SCREEN: The pump has an internal metal intake screen. It's purpose is

to catch solids accidently introduced during installation or filter servicing, dirt stuck inside your

intake pipe before installation, or mineral deposits that may accumulate and flake off of the

intake piping.

1300-SERIES "SLOWPUMP" has an angled extension with a large brass nut on the end.

Remove the nut to inspect and empty screen.

2500-SERIES SLOWPUMPS & "FLOWLIGHT BOOSTER PUMP" have a strainer pushed into

the intake fitting.

EXTERNAL FILTRATION IS STILL REQUIRED! If you notice signs of intake blockage, inspect

your screen. If solids keep accumulating, improve your filtration. See Page 2 for details about

filters and cartridges.

PUMP HEAD: Except for the internal screen, your pump head is maintenance-free. DO NOT

remove its front plate or otherwise tamper with it unless you are intending to get it rebuilt. The

pump head is NOT USER-SERVICEABLE. It is easy to dissemble, but difficult to reassemble

without special tools.

WATER FILTER:

The best way to determine when a cartridge is becoming clogged is to listen for an increasingly

loud buzzing noise (cavitation). It is difficult to determine the condition by the appearance of the

cartridge. KEEP SPARE CARTRIDGES! You can buy cartridges locally, but the best ones are

thick-body polypropylene fiber construction (not the type that looks like twisted string or paper).

We recommend 10-micron cartridges (pack of two: Dankoff Solar Item# 20236). Do not use a

carbon filter for this purpose.

30" INTAKE FILTER, WARNING: Cartridges vary slightly in outside diameter. If replacement

fits loosely into end caps, wrap ends with cloth or tape to make a snug fit. If cartridge is too

large to fit, peel away some fibers using a knife. End caps MUST fit snugly or dirt will enter!

Pack of 3 cartridges: Dankoff Solar Item #20237.

MOTOR BRUSHES: After a year or two, inspect your motor brushes and measure their length

(remove one or both of the black plastic screw heads near the rear of the motor). Motor

brushes on most models measure 3/4 inch long, not including the rounded end. If you have a

1/2 HP model (1400 or 2600 series, or any motor larger than 5” diameter) they begin life

measuring about 1 1/4”). After they show some wear, you may calculate how many more years

they have left before they are too short. After inspecting a brush, replace it in the EXACT SAME

POSITION and tighten the plastic screw GENTLY. Most brushes last at least 5 YEARS of daily

running. Brush wear will not effect motor performance until contact is suddenly lost.

MOTOR BRUSHES for 12V pumps: Dankoff Solar Item # 20301

MOTOR BRUSHES for 24V pumps: Dankoff Solar Item # 20302

For 1400 and 2600-series pumps (large blue motor) and for AC models, please ask your

Dankoff dealer.