Simer Pumps 3997 owner manual Installation / Operation, Airlocks, Automatic Float Switch

Installation / Operation 5

Vertical float switch installation for replacement.

Vertical switch is pre-installed at the factory:

See Figure 1.

1.Mount the bracket to the switch body.

2.Mount the float on to the rod.

3.Mount the retaining strap and float stop on to the rod.

4.Slide the rod into the switch housing.

5.Fasten the rod with the pin.

6.Mount the switch assembly on the pump.

OPERATION

Risk of electric shock. Shock can burn or kill. Disconnect the power from the unit. Do not handle a pump or pump motor with wet hands or when standing on a wet or damp surface, or in water. Failure to follow this warning can result in fatal electrical shock.

1.	The shaft seal depends on water for lubrication. Do
	not operate pump unless it is submerged in the water
	as seal may be damaged if allowed to run dry.
2.	The motor is equipped with an automatic reset ther-
	mal protector. If the temperature in the motor should
	rise unduly, the switch will cut off all power before
	damage can be done to the motor. When the motor

Switch Housing

1

Bracket

6

5

Pin

has cooled sufficiently, the switch will reset automat-

ically and restart the motor. If the protector trips

repeatedly, the pump should be removed and

checked as to the cause of the the difficulty. Low

voltage, long extension cords, clogged impeller, very

low head or lift, etc., could cause cycling.

3. The pump will not remove all water. If a manually

operated pump is operating and suddenly no water

Float

Rod

4

2

Float

Retaining Strap

3

018 0893 IR

Float Stop

Figure 1 – Vertical switch assembly

comes out of the discharge hose, shut off the unit

immediately. The water level is probably very low

and the unit has broken its prime.

Automatic Float Switch

1.Fill sump with 12"-14" of water to check operation and tightness of connections. During first automatic cycle, it may take 30 seconds or more before pump is primed and pumping. Turn-on will occur approxi- mately 6.5" above pump base.

2.Check turn-off position. Turn-off will occur approxi- mately 2" above pump base.

3.If pump does not operate, check electrical service.

4.Float must be free to move up and down in sump. Make sure there is no debris in sump and that the switch is clear from the sump wall.

AIRLOCKS

When a pump airlocks, it runs but does not move any water. An airlock will cause the pump to overheat and fail. This pump has a built in anti-airlock hole. See the exploded view on the repair parts page for the location of the hole. Leakage from the anti-airlock hole is normal.

If you suspect an airlock, unplug the pump, clean out the anti-airlock hole with a paper clip or a piece of wire, and restart the pump.

For parts or assistance, call Simer Customer Service at 1-800-468-7867 /1-800-546-7867