LW5 Series
1/2HP Sewage Pumps
1/2HP Sewage Pumps
- 2" Solids Handling
- Durable Mechanical Seal
- Automatic and Mannual Models
- Rugged, All Metal Construction
- Dependable Operation
- 115 Volt Piggyback Pump Plug
- 115 Volt Float Plug
- 230 Volt Piggyback Pump Plug
- 230 Volt Float Plug
Features / Benefits
- Impeller
- Cast iron casting for rugged operation and dependable service.
- Recessed (vortex) design reduces bearing load / increases bearing life.
- Recessed design prevents clogging.
- Shaft Seals
- Full mechanical seal (carbon / ceramic).
- Extra protection and longer seal life.
- Motor
- Permanent split capacitor design for assured starting and strong torque.
- Internal capacitors and start switch, no external control box required.
- Internal overload protection.
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- Oil-filled provides:
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- Constant bearing lubrication.
- Maximum motor cooling.
- Even temperature distribution throughout the motor.
- Bearings
- Dual (upper & lower) ball bearings for long pump life.
- Pump Body
- Rugged all cast iron construction
| DISCHARGE | 2" NPT, Vertical |
|---|---|
| LIQUID TEMPERATURE | 140 degrees F. (Intermittent) |
| SHAFT SEAL |
|
| IMPELLER | Cast Iron |
| SOLIDS HANDLING | 2" Diameter Solids |
| BEARINGS |
|
| MOTOR (SINGLE PHASE) |
|
| MOTOR HOUSING | Cast Iron, ASTM A-48, Class 30 |
| SHAFT | Hardened Steel |
| SEAL PLATE | Cast Iron, ASTM A-48. Class 30 |
| VOLUTE | Cast Iron, ASTM A-48, Class 30 |
| HARDWARE | 300 Series Stainless Steel |
| SQUARE RINGS | Buna-N |
| WEIGHT | 42 lbs (Manual) |
KEENER PUMPS 1/2 HP sewage Pumps LW5 Series
Specifications
Pump Model - Pump shall be of the submersible centrifugal type, 1/2 HP Milwaukee LW5 Series. The pump shall easily pass 2" diameter solids through the pump end without jamming and exit through the 2" NPT discharge.
Operating Conditions - The pump shall have a capacity of _____ GPM at a total head of _____ feet, and shall use a motor rated at 1/2 HP and 3450 RPM.
Pump Impeller - Cast Iron and threaded on a hardened steel shaft. The impeller shall be of the recessed vortex type to provide an unobstructed passage through the volute for the ground solids.
Pump Housing Construction - All components of the pump construction (cord cap, motor housing, seal plate, volute) shall be cast iron, ASTM A-48, Class 30.
Seal - The motor shall be protested by a mechanical, Type 21, (carbon / ceramic) seal. The mechanical seal face shall be carbon and ceramic, lapped to a flatness of one light band. All hardware shall be stainless steel. The elastomer materials shall be Buna-N.
Motor - The pump motor shall be of the submersible type, rated 1/2 HP, 3450 RPM. The motor shall be for 60 Hz, 115 Volt, single phase operation. The motor shall be of the permanent split capacitor design with an internal start capacitor for high starting torque. Motor operation temperature must not exceed Class B ratings.
The stator winding shall be of the open type with Class B Insulation. Winding housing shall be filled with a clean, high dielectric oil that lubricates bearings and seals, transferring heat from windings and rotor to the outer cast housing. Air-filled motors which do not have the superior heat dissipating capabilities of oil-filled motors shall not be considered equal.
The motor shall have two heavy duty ball bearings to support the pump shaft, taking radial and thrust loadings. Ball bearings shall be designed for a minimum 50,000 hours B-10 life. The stator shall be pressed into the motor housing. The shaft shall be hardened at the impeller.
The motor shall be capable of operating over the full range of the performance curve without overloading. Single phase motors shall have a heat sensor thermostat and overload attached to the top end of the motor windings to stop the motor if the motor winding temperature reaches 200 degrees F. The high temperature shut-off will cause the pump to cease operation, should a control failure cause the pump to run in a dry wet well. The thermostat shall automatically reset when the motor cools to a safe operating temperature.
Power Cord - The motor power cord shall be 14 Ga. SJTW or SJTOW, 10' 20' length. The cable jacket shall be sealed at the motor entrance by means of a rubber compression nut with concentric ribbing. Potted Epoxy inside cord cap.
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