Access Doors

• Access doors can be single or double leaf design. Doors

should include a lifting handle and a lock provision for

tamper resistant operation. Standard and heavy duty steel

or aluminum doors are available.

• The pit access door must be of sufficient size to allow for

inspection, maintenance and crane or hoist service.

Liquid Level Controls

• Single float operation can be used on1⁄3 and 1⁄2 HP models.

Mounting of the float switch must be checked by the

installer to insure proper turn on and turn off. The pump

may be plugged directly into the piggy back style plug

located on the cord of the float switch.

• The recommended float operation sequence used with a

control panel requires a three or four float system. In the

three float system, the floats are designated SW-1 for the

bottom float, SW-2 for the middle float and SW-3 for the

top float. In a four float system the fourth float is

designated SW-4.

• Simplex Control – The rising liquid level raises float

SW-2, turning on the pump. When the liquid level falls

sufficiently, SW-1 will turn the pump off. If the influent

is excessive, or if the pump fails to operate correctly,

SW-3 will activate an alarm, which will remain on until

manually reset.

NOTICE: DURING PUMP OPERATION, INSURE THAT THE LIQUID LEVEL DOES NOT DROP BELOW THE PUMP MOTOR FOR EXTENDED PERIODS. THIS CAN CAUSE THE PUMP MOTOR TO OVERHEAT, CAUSING MOTOR DAMAGE AND VOIDING THE WARRANTY.

Pump Motor Control Panels

•Control panels shall be in accordance with local and National Electrical Code requirements.

•Single phase installations shall be equipped with a Goulds’

“SES” or “A” Series panel, or AS A MINIMUM, a control panel with a properly sized magnetic contactor and a disconnect switch.

• Three phase installations shall be equipped with a Goulds’ “SES” or “A” Series panel, or AS A MINIMUM with a 3 pole circuit breaker, an across the line magnetic starter NEMA rated for the appropriate horsepower, ambient compensated Quick Trip Class 10 overload relays.

Wiring and Grounding

•Use only stranded copper wire to motor and ground. The ground wire must be at least as large as the wires to the motor. Wires should be color coded for ease of maintenance.

• Duplex Control – The duplex control will alternate the

two pumps, causing the lead pump to change at each

system cycle. When equipped with three floats, the

system will cycle the same as the simplex control,

described above, except that the SW-1 will cause the

lead pump to alternate.

• If the influent is excessive, or if the lead pump fails to

operate correctly, the rising level will activate SW-3,

turning on the lag pump and the alarm. As before the

WARNING

Hazardous voltage can shock, burn or cause death.

Install, ground and wire according to local and National Electrical Code requirements.

Install an all leg disconnect switch near the pump.

Disconnect and lockout electrical power before installing or servicing pump.

alarm must be manually reset.

• Four Float Control – The four float system operates the

same as the duplex control system, except that float

SW-3 will not turn on the alarm. In this system SW-4

turns on the alarm, which again must be manually reset.

• Several different float controls are available from the

Goulds Catalog.

NOTICE: POSITION THE FLOATS SO THAT THEY DO NOT SNAG OR TANGLE ON THE PUMP, DISCHARGE PIPING, OR OTHER EQUIPMENT.

•The lower most float turns the unit off and should be set as shown in the “TYPICAL PLUMBING and INSTALLATION” drawing provided in this manual.

•Increasing the distance between the SW-1 and SW-2 floats lengthens the running time. One (1) minute is the minimum recommended pump cycle time.

Electrical supply MUST match pump’s nameplate specifications. Incorrect voltage can cause fire, damage motor and voids warranty.

Single phase motors are equipped with automatic thermal protectors which open the motor’s electrical circuit when an overload exists. This can cause the pump to start unexpectedly and without warning.

Some models are equipped with a 3-prong grounded plug and MUST be used in a grounded 3-wire receptacle. DO NOT modify the plug or remove the ground prong.

•Where cables must be spliced or connected to the motor leads, splices MUST be water tight. Commercially available potting or heat shrink kits may be used, if allowed by local or federal regulations.

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