Install Instructions

a. Cover Removal and Installation Procedure

For FS7-4 models with NEMA 1 Enclosure

• Using a flathead screwdriver, loosen but do not remove the

two cover screws and remove the cover (A).

• Place the cover on the flow switch sliding the slots behind

the two loose cover screws. Push the cover down into the

flow switch and using a flat blade screwdriver, tighten the

cover screws to a torque of 10 lb•in (1.13 N•m).

For FS7-4W & FS7-E models

• Using a 5/16” socket wrench, unscrew the six bolts that

secure the switch housing and remove cover.

• FS7-4W models have gasket that needs to be removed

and replaced.

• Place cover on flow switch and use 5/16” socket wrench

to tighten the six bolts to 5 ft•lb (7 N•m) torque.

STEP 4 - Electrical Installation

• To prevent electrical shock, turn off the electrical power before making electrical connections.

• To prevent an electrical fire or equipment damage, electrical wiring insulation must have a rating of 167˚F

(75˚C) if the liquid’s temperature exceeds 180˚F (82˚C).

• To prevent electrocution, when the electrical power is connected to the flow switch, do not touch the

terminals.

• Make sure flow switch electrical cover is secured before turning on electric power.

Failure to follow this warning could cause property damage, personal injury or death.

WARNING