Spec Sheet

RESIDENTIAL SEWAGE PUMP
MYERS
®
SRM4 SERIES
SPECIFICATIONS
Sewage Pumps – Pump(s) shall be Myers SRM4 series sewage pumps selected in accordance with the following design criteria:
Number of Pumps: _____________________
Primary Design Flow: _____________________
Primary Design Head: _____________________
Minimum Shut-off Head: 19
Motor Horsepower: 4/10
Motor Speed: 1650 RPM
Electrical: 115 Volts, 1Ø, 60 Hz or
230 Volts, 1Ø, 60 Hz
Pump – The pump shall be designed to handle raw sewage and be capable of passing 2 inch spherical solids. The pump shall be
capable of handling liquids with temperatures to 140°F intermittent.
Motor – The pump motor shall be of the submersible type rated 4/10 hp at 1650 RPM and shall be for _______
115 volts or _______230 volts single phase, 60 cycles. Stator winding shall be of the open type with Class A insulation rated for 105°C
maximum operating temperature. The winding housing shall be filled with clean dielectric oil to lubricate bearings and seals, and
transfer heat from the windings to the outer shell. The motor winding assembly shall be pressed into the stator housing for best
alignment and heat transfer.
The motor shall be capable of operating over the full range of the performance curve without overloading the motor and causing any
objectionable noise or vibration. The motor shall have two bearings to support the rotor; an upper sleeve bearing to accommodate
radial loads and a lower sleeve bearing with thrust pad to take thrust and radial loads.
A heat sensor thermostat and overload shall be attached to the top end of the motor windings and shall be wired in series with the
windings to stop the motor if the motor winding temperature reaches 221°F. The overload thermostat shall reset automatically when
the motor cools to a safe operating temperature.
Power Cord – The motor power cord shall be _______10 or _______20 feet SJTW/SJTW-A type. The cord shall have
a molded compression grommet to insulate electrical connections. The grommet shall thread into the motor housing to provide a
positive seal and to prevent leaking of liquid into the motor housing. The sealing grommet shall provide strain relief for the power
cord assembly.
Optional Control Switch – The sewage pump shall be controlled by an optional piggyback float switch. The float switch shall be of a
non-mercury type and be capable of directly controlling the pump motor without the need for an external control panel.
Shaft Seal – The motor shall be protected by a rotating mechanical shaft seal. The seals shall have carbon and ceramic seal faces
lapped to a tolerance of one light band. Metal parts and springs for seals shall be stainless steel.
Pump Impeller – The pump impeller shall be of the non-clog type. The impeller shall be constructed of engineered thermoplastic.
Motor Castings – The motor housing castings shall be of high tensile strength Class 30 gray cast iron. Castings shall be treated with
phosphate and chromate rinse and painted with a high quality air dry alkyd enamel for corrosion protection.
Pump Case – The pump case shall be a high efficiency volute design capable of passing 2 inch spherical solids. The pump volute
shall be constructed of Class 30 gray cast iron.
Fasteners – All exposed fasteners shall be of stainless steel.
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