Rev. 03/2018

K4RN(X)4” Submersible, Recessed Impeller

(Class 1, Div. 1, Groups C & D Hazardous Location)RECESSED IMPELLER • Handles Stringy and Fibrous Materials • Passes Large Solids • Pumps Heavier Solids Concentrations • Ideal for Grit and Abrasive Solids • Pumping via Vortex Action • Solids Do Not Pass through Impeller • Virtually Impossible to Clog

STRONG PERFORMANCE • Ideal for Higher heads, Lower flows • Operate to Shut-off Head without Damage • Non-overloading Performance Curve

LONG SERVICE LIFE • Dual Silicon Carbide Shaft Seals • Low Motor Operation Temperatures • Continuously Lubricated Bearings • Premium 3-Bearing Construction • Epoxy Potted Cord Entry

LOW MAINTENANCE • No Wear Components • Recessed Impeller out of Passageway • Grit-Resistant Silicon Carbide Shaft Seals

CAPABILITIES: • Flows-------------------------------------- to 600 GPM • Heads------------------------------------- to 67 Feet • HP Range-------------------------------- 1 - 10 HP • Voltage / Phase Options------------- 208/230 V, 1 Phase - 208/230/460 V, 3 Phase • Discharge Connections-------------- 4” ANSI Class 125 Horizontal Flange • Motor Speeds--------------------------- 1150 / 1750 RPM • Solids-Handling------------------------ 3” • Impeller---------------------------------- Recessed, Vortex • Motor Service Factor----------------- 1.20

Solids-Handling Pumps

K4RN(X)

Rev. 03/2018

471 US HWY 250 East . Ashland, Ohio 44805 419.207.9400 fax 419.207.8031www.keenpump.com

1. Watertight Cable EntranceAgency-approved, watertight strain relief cord grips with compres-sion grommets protects outer cord jacket. Epoxy-filled inner cord cap provides anti-wicking moisture protection to the motor even if power cable is cut or damaged. 40’ UL power & control cords.

2. Modular Pump DesignCommonality of parts across the Keen product line minimizes the amount of parts required for servicing. Heavy-duty ASTM A48, Class 35 cast iron components.

3. Strong Motor (U.S. Motor Manufacturer)Powerful high-torque motor for strong pumping. 208/230 Volt, 1-phase208/230/460 Volt, 3-phaseSlip-Fit stator efficiently transfers heat to cast housing. Class F construction with overload protection in oil-filled chamber for cool operation and long motor life.

3a. OilProprietary Keen oil ensures industry-low operating temperatures.

4. Solid 3-Bearing SupportMotor / Pump shaft securely held with upper and lower ball bearings, plus additional sleeve bearing in lower seal chamber. Rated for 50,000 hour B-10 life.

5. Severe Duty Dual Mechanical SealsDual silicon carbide mechanical shaft seals provide twice the moisture and grit protection for the motor. Dual seals are housed in a secondary oil-filled seal chamber. Tougher silicon carbide seals better handle sand, grit and abrasive materials.

6. Moisture DetectionSeal leak probe signals alarm in control panel for scheduled maintenance.

7. Non-Overloading Hydraulic DesignRecessed centrifugal impeller allows 100% performance curve operation from shut-off to maximum flow without damage to the pump or system. The recessed, vortex impeller is out of the passageway of fluid flow, eliminating concerns of blockage or wear.

8. 3” Solids-HandlingClear, unobstructed passageway provides reliable movement of solids.

9. Standard Flange Connection4“ Horizontal, Class 125 ANSI discharge flange. Industry standard, 8-bolt pattern.

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Features and Bene�ts

File: K4RNM4&6 Dimensions

Pump Series K4RN 4” SUBMERSIBLE SEWAGE PUMPS

Section Date

VORTEX JUNE 2015

DIMENSIONAL DATA

Note: All dimensions in inches unless noted. Pump shown 1150 & 1750 RPM. Dimensions may vary due to normal manufacturing tolerances.

File: K4RNM4&6 Liftout Dimensions

Pump Series K4RN 4” SUBMERSIBLE SEWAGE PUMPS

Section Date

VORTEX JUNE 2015

LIFTOUT DIMENSIONAL DATA

Notes: 1. All dimensions in inches unless noted.2. Pump shown 1150 & 1750 RPM.3. Discharge �ange ANSI Class 125 unless noted.4. Absolute minimum and recommended minimum submergence levels noted.5. Discharge base elbow must be placed above sump bottom as noted.6. Dimensions may vary due to normal manufacturing tolerances.7. If discharge pipe is larger than discharge elbow, eccentric reducer must be used limited to 2X larger maximum.

File: K4RNM4&6 Install Dimensions

Pump Series K4RN 4” SUBMERSIBLE SEWAGE PUMPS

Section Date

VORTEX JUNE 2015

SIMPLEX INSTALLATION DIMENSIONAL DATA

Notes: 1. All dimensions in inches unless noted.2. Pump shown 1150 & 1750 RPM.3. Refer to pump dimension and liftout dimension sheets for more details.4. Recommended minimum submergence levels noted.5. Discharge base elbow must be placed above sump bottom as noted.6. Dimensions may vary due to normal manufacturing tolerances.7. If discharge pipe is larger than discharge elbow, eccentric reducer must be used limited to 2X larger maximum.

File: K4RNM4&6 Install Dimensions

Notes: 1. All dimensions in inches unless noted.2. Pump shown 1150 & 1750 RPM.3. Refer to pump dimension and liftout dimension sheets for more details.4. Recommended minimum submergence levels noted.5. Discharge base elbow must be placed above sump bottom as noted.6. Dimensions may vary due to normal manufacturing tolerances.7. If discharge pipe is larger than discharge elbow, eccentric reducer must be used limited to 2X larger maximum.

Pump Series K4RN 4” SUBMERSIBLE SEWAGE PUMPS

Section Date

VORTEX JUNE 2015

DUPLEX INSTALLATION DIMENSIONAL DATA