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Electrical / Operation / Service 4
Use a 2" (5.1 cm) swing check valve in pump discharge
to prevent backflow of liquid into sump basin. Check
valve should be a free flow valve that will easily pass
solids.
NOTICE: For best performance of check valve when
handling solids, do not install it with the discharge pipe
angled more than 45° above the horizontal. Do not
install check valve in a vertical position as solids may
settle in valve and prevent the check valve from opening
on startup.
Drill a 3/16" (4.7mm) hole in discharge pipe about 1"-2"
(2.5 - 5.1cm) above pump discharge connection (but
below check valve) to prevent airlocking the pump.
ELECTRICAL
Hazardous voltage. Can shock, burn, or
cause death. When installing, operating, or servicing this
pump, follow safety instructions listed below.
1. DO NOT splice the electrical power cord.
2. DO NOT allow electrical cord plug to be submerged.
3. DO NOT use extension cords. They are a fire hazard
and can reduce voltage sufficiently to prevent pump-
ing and/or damage motor.
4. DO NOT handle or service pump while it is connected
to power supply.
5. DO NOT remove grounding prong from plug or
modify plug.To protect against electrical shock, the
power cord is a three-wire conductor and includes a
3-prong grounded plug. Plug pump into a 3-wire,
grounded, grounding-type receptacle. Connect pump
according to electrical codes that apply.
For automatic operation, plug or wire pump into an
automatic float switch or pump controller. Pump will run
continuously when plugged directly into an electrical
outlet. Connect or wire pump to an individual branch
circuit with no other outlets or equipment in the circuit.
Size fuses or circuit breakers according to Fuse Size
Chart at right.
Risk of electrical shock and fire. Can cause
severe personal injury, property damage or death. Be
sure that power supply information (Voltage/
Hertz/Phase) on pump motor nameplate matches incom-
ing power supply exactly. Install pump according to all
electrical codes that apply.
FUSE SIZE CHART
Individual Dual Element
Branch Circuit Time Delay
Model H.P. Voltage Required (Amps) Fuse Amps
2961 4/10 115 15 10
OPERATION AND INSTALLATION
NOTICE: Do not allow pump to run in a dry sump. It
will void the warranty and may damage the pump.
An automatic overload protector in the motor will pro-
tect motor from burning out due to overheating/over-
loading. When motor cools down, overload protector
will automatically reset and start motor.
If overload trips frequently, check for cause. It could be a
stuck impeller, wrong/low voltage, or electrical failure in
motor. If an electrical failure in the motor is suspected,
have it serviced by a competent repairman.
Pump is permanently lubricated. No oiling or greasing is
required.
GENERAL
Hazardous voltage. Can shock, burn, or
cause death. Before removing pump from basin for ser-
vice, always disconnect electrical power to pump and
control switch.
Risk of electrical shock. Can burn or kill.
Do not lift pump by the power cord.
Submerge pump in a disinfectant solution (chlorox or
chlorine) for at least one hour before disassembling
pump.
The pump motor contains a special lubricating oil which
should be kept clean and free of water at all times.
For parts or assistance, call Simer Customer Service at 1-800-468-7867 / 1-800-546-7867