KEENER GRINDER PUMPS HGP2 - 2021 -50Hz (PATENTED) AVAILABLE WITH INTERNAL HGP2 - 2023-2034-50Hz 2HP Grinder Pump

High Head, Double Stage

Doubled Output Pressure Unmatched Performance 210 Shut-off Head Flows to 40 gpm

Balanced Design Ideal for Long Discharge Runs or High Static Heads Potentially Replaces Higher HP Pumps Ductile Iron Impeller, Recessed, Clog-Free Silicon Carbide Seals - Grit Resistant

Features / Benefits Cutter Assembly

● Hardened 440 SST (56-60 Rockwell) shredding ring and grinding impeller.

● 11,500 cuts / second .....690,000 cuts / minute.

Impeller ● Two Ductile Iron castings for superior quality and long life.

● Recessed impeller provides high head & non-overloading performance.

● Recessed (vortex) design reduces bearing load / increases bearing life.

● Recessed impellers prevent clogging.

Shaft Seals

● Dual full mechanical seals (silicon / carbide).

Motor

● Capacitor start / run design for assured starting, strong torque and grinding under

heavy load.

● Utilizes a low voltage, stress-free electronic start switch.

● Pressed stator design for precise shaft/bearing alignment.

● Internal overload protection.

● Dual ball bearings (upper and lower).

Oil-filled provides: 1. Constant bearing lubrication.

2. Maximum motor cooling, even temperature distribution.

KEENER GRINDER PUMPSPATENTED DUAL STAGE, 2 HP GRINDER PUMP

DISCHARGE 1-1/4" NPT, Vertical

LIQUID TEMPERATURE

• 120 degrees F. (Continuous) • 140 degrees F. (Intermittent)

MOTOR HOUSING Cast Iron, ASTM A-48, Class 30

CORD CAP Cast Iron, ASTM A-48, Class 30

VOLUTE Cast Iron, ASTM A-48, Class 30

SEAL PLATE Cast Iron, ASTM A-48, Class 30

IMPELLER

• Ductile Iron • 10 vane, Vortex with Pump-out Vanes, Dynamically

Balanced

SHREDDING RING• Hardened 440C Stainless Steel • 56-60 Rockwell C

GRINDER IMPELLER• Hardened 440C Stainless Steel • 56-60 Rockwell C

SHAFT 416 Stainless Steel

SHAFT SEAL

(Lower) Mechanical Silicon - Rotating Face Carbide - Stationary Face Buna-N -Elastomer 300 Series Stainless Steel - Hardware

(Upper) Mechanical Silicon - Rotating Face Carbide - Stationary Face

BEARING (UPPER) Single Row, Ball, Oil Lubricated

BEARING (LOWER) Single Row, Ball, Oil Lubricated

HARDWARE 300 Series Stainless Steel

SQUARE RINGS Buna-N

CORD• UL / C(UL) Listed 14 AWG, Type SJOW or SOOW • 20' Length Standard. Other Lengths Available.

CORD ENTRY

Triple Sealed Design Compression Grommet - Outer Jacket Seal Epoxy Potted - Inner Conductor Seal Butt Connector - Inner Wire Strand Wicking Blockage

MOTOR (SINGLE PHASE)

2 HP, 2900 RPM, 50 Hz NEMA L, Includes Overload Protection in the Motor Oil Filled, Class F Capacitor Start / Capacitor Run Start Capacitor..... 400 mfd, 125 volts Run Capacitor..... 90 mfd, 250 volts

MOTOR (THREE PHASE)

2 HP, 2900 RPM, 50 Hz 450 volts 3Ø NEMA B, Requires Overload Protection in the Control Panel Oil Filled, Class F

OPTIONAL EQUIPMENT

Seal Materials Additional Cable Lengths External Capacitor Start Kits Impeller Trims

KEENER GRINDER PUMPS

2 HP Grinder Pumps HGP2 Series-50Hz

Specifications

Pump Model - Pump shall be of the centrifugal type, KEENER GRINDER PUMP HGP2 Series, with an integrally built-in grinder unit and submersible type motor. The grinder unit shall be capable of macerating all material in normal domestic and commercial sewage, including reasonable amounts of foreign objects such as sanitary napkins, disposable diapers, thin rubber, small wood, plastic and the like to a fine slurry that will easily pass through the pump and 1-1/4" 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 2 HP and 2900 RPM. The pump has capabilities of producing 10 gpm @ 190' TDH and maximum shut-off head of 210'.

Pump Impeller - Two cast Ductile Iron impellers, threaded on a common stainless steel shaft. The impellers shall be of the recessed vortex type to provide an unobstructed passage through the two volutes for the ground solids.

Grinder Construction - Both grinder impellers and shredding ring shall be of 440C stainless steel hardened to 56-60 Rockwell C. The grinder assembly shall consist of a grinder impeller and shredding ring mounted directly below the volute passage. The grinder impeller is threaded to a stainless steel shaft, locked with a screw and washer. The shredding ring shall be pressed into an iron holding flange for easy removal. The flange shall be provided with tapped back-off holes so screws can be used to push the shredding ring from the housing. All grinding of solids shall be from the action of the grinder impeller against the shredding ring. There shall be 11,500 cuts / second.

Seal - The motor shall be protected by dual sets of dual seal construction mounted in tandem. The seals are mechanical, Type 21, (silicon / carbide). The mechanical seal face shall be lapped to a flatness of one light band.

Motor - The pump motor shall be of the submersible type, rated 2 HP, 2900 RPM. The motor shall be for 50 Hz, either 240 volt, single or 415 volt three phase operation. Single phase motors shall be capacitor start, capacitor run type for high starting torque

The single phase motor will utilize an electronic, not mechanical starting switch. The electronic

start switch shall operate and release the start windings at the "zero" potential of the sinusoidal

wave form, thus eliminating any current flow during the switching operation. The start switch shall

only have 120 volt potential through the switch via a center tap lead from the main windings. Run

capacitor ratings shall not exceed 300 volts. Major operating temperature must not exceed Class B

ratings.

The stator winding shall be of the open type with Class F 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 common motor pump and grinder shaft shall be of 416

SST, threaded to take the pump and grinder impeller.

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. SJOW/SJOWA or SOOW. The cable jacket

shall be sealed at the motor entrance by means of a rubber compression washer and compression

nut. An epoxy filled tube shall seal the outer cable jacket and individual leads to prevent water from

entering the motor housing. Individual conductor strands shall be soldered within the epoxy seal.