Flowlight Booster Pump Instruction Manual

NOTE: It is preferable to place the pump LOWER than the water level in the tank. This

illustrates an alternative, not an ideal. Note the upward rise of the suction pipe, the high position

of the priming plug, and the horizontal position of the filter. These measures help prevent air

entrapment that restricts flow and causes pump noise.

Follow your pressure switch instructions for wiring. Use the flexible hose that comes with your

Booster Pump (cut it into two sections). Our Easy Installation Kit contains the tee fitting at the

tank, a DC-rated pressure switch, and all of the small parts shown between the pump and the

house plumbing. See PRESSURE SWITCH DIAGRAM on PAGE 20

Typical Flowlight Booster Pump installation

Illustration by Home Power Magazine

PRESSURE SWITCH ADJUSTMENT: Switch settings determine the pressure range of your

system. To conserve energy, set the pressure as LOW as feasible. This will also prevent the

motor from overheating if you run it for long periods -- sprinkling, for example. Low pressure

(even 15-20 PSI) may deliver excellent water flow IF your plumbing and hoses are sized larger

than minimum. If not yet plumbed, use at least one size larger pipe than conventional, and

avoid restrictive connections such as 3/8" tubing often used to feed sinks.

Adjustment: Start with the standard setting (usually 30/50 PSI). Reduce the pressure according

to your requirements, if you wish. It is wise to measure the current used by your pump (with an

amp meter in series with the line, your system metering). Current draw will rise in direct

proportion to outlet pressure. Pressure should NOT be set beyond 50 PSI MAXIMUM (65 PSI

with 2910 Model) or loss of efficiency and motor over-heating will result. IMPORTANT: After

any change to your cut-in pressure, you need to readjust the pressure tank pre-charge.