RED LION RLHE-300 Cast Iron Industrial Sprinkler Pump Owner’s Manual

RED LION RLHE-300 Cast Iron Industrial Sprinkler Pump

Product Information

The RLHE-300 Cast Iron Industrial Sprinkler Pump is designed for large residential properties and commercial lawn and turf sprinkling systems. It features a heavy-duty iron casing, diffuser,and seal plate, along with a high- efficiency impeller and diffuser for reliable service. The pump motor includes an automatic resetting thermal protector to prevent overheating.

Specifications

• Model: RLHE-300
• Item Number: 614481
• HP: 3
• Suction x Discharge: 2 x 2 NPT
• Volts: 230
• Amps: 16.1

Product Usage Instructions

Safety Instructions

Risk of severe injury or death by electrical shock. Follow all safety precautions provided in the manual to avoid accidents.

Facility

1. Check valve
2. Gate valve
3. Discharge
4. Pump
5. Suction line
6. Strainer

Pump Location
Choose an appropriate location for the pump to ensure efficient operation and easy maintenance.

Piping Instructions

1. Install a new, clean pipe for the suction line, ensuring it does not exceed 25 feet of total suction lift.
2. Use pipe thread sealant on discharge piping for airtight connections.

Electrical Connections

1. Hire a qualified electrician for proper electrical connections.
2. Provide a separate circuit from the distribution panel to the pump unit with proper protection.

Operation

1. Prime the pump to expel any air from the system.
2. Ensure there is water in the pump to prevent damage to the motor.
3. Start the pump and open the discharge valve once fully operational.

Maintenance

Draining the Pump

1. Remove the pipe plug from the bottom of the pump case.

2. Allow the water to drain completely before re-installing the pipe plug.

Disassembly

1. Shut down the system and power. 2. Allow components to cool before disassembly. 3. Carefully remove pump components according to the manual instructions.

Pump Shaft Disassembly

1. Unbolt and remove the casing, diffuser, and impeller.
2. Take care not to damage the mechanical seal during disassembly.

Pump Check Valve Disassembly

1. Unbolt and remove the check valve from the volute.
2. Inspect and replace worn parts during reassembly.

FAQs

Q: What should I do if the thermal protector trips frequently?
A: Frequent tripping may indicate motor overloading or overheating. Check for any obstructions in the system and ensure proper ventilation around the pump motor.

Q: Can I operate the pump under a no-flow condition?
A: No, operating the pump under a no-flow condition can damage the motor. Always ensure there is water in the pump before starting.

RLHE-300 Cast Iron Industrial Sprinkler Pump

The RLHE-300 is suitable for both large residential properties and commercial lawn and turf sprinkling systems. Designed with a heavy-duty iron casing, diffuser, and seal plate and featuring a high-efficiency impeller and diffuser, this pump provides reliable service. The pump motor is equipped with an automatic resetting thermal protector and may restart unexpectedly. Thermal Protector tripping indicates motor overloading or overheating.
This product is covered by a limited warranty for a period of 1 year from the date of original purchase by the consumer. For complete warranty information, refer to www.redlionproducts.com.

Specifications

Model| Item Number| HP| Suction x Discharge| Volts| Amps
---|---|---|---|---|---
RLHE-300| 614481| 3| 2″ x 2″ NPT| 230| 16.1

SAFETY INSTRUCTIONS

This equipment should be installed and serviced by technically qualified personnel who are familiar with the correct selection and use of appropriate tools, equipment, and procedures. Failure to comply with national and local electrical and plumbing codes and within Red Lion recommendations may result in elec-trical shock or fire hazard, unsatisfactory performance, or equipment failure.
Know the product’s application, limitations, and potential hazards. Read and follow instructions carefully to avoid injury and property damage. Do not disassemble or repair unit unless described in this manual.
Refer to product data plate(s) for additional operating instructions and specifications.

Failure to follow installation or operation procedures and all applicable codes may result in the following hazards:

DANDER
Risk of death, personal injury, or property damage due to explosion, fire, or electric shock.

• Do not use to pump flammable, combustible, or explosive fluids such as gasoline, fuel oil, kerosene, etc.
• Do not use in explosive atmospheres or hazardous locations as classified by the NEC, ANSI/NFPA70.
• Do not handle a pump or pump motor with wet hands or when standing on a wet or damp surface, or in water.
• When a pump is in its application, do not touch the motor, pipes, or water until the unit is unplugged or electrically disconnected.
• If the power disconnect is out of sight, lock it in the open position and tag it to prevent unexpected application of power.
• If the disconnect panel is not accessible, contact the electric company to stop service.

WARNING
Risk of severe injury or death by electrical shock.

• To reduce risk of electrical shock, disconnect power before working on or around the system. More than one disconnect switch may be required to de-energize the equipment before servicing.
• Wire pump system for correct voltage.
• Be certain that this pump is connected to a circuit equipped with a ground fault circuit interrupter (GFCI) device if required by code.
• The pump includes a grounding connector. To reduce risk of electric shock, be certain that it is prop-erly connected to ground.
• To avoid hazards when installing or servicing, install a double-pole disconnect near the pump installation.
• Use an appropriate discharge resistor to discharge the capacitor prior to working on the motor.
• This pump has not been investigated for use in swimming pool or marine areas.
• Check local electrical and building codes before installation. The installation must be in accordance with their regulations as well as the most recent National Electrical Code (NEC) and the Occupational Safety and Health Association (OSHA), or Canadian Electrical Code (CEC).
• Employ a licensed electrician.

CAUTION
Risk of bodily injury, electric shock, or equipment damage.

• This equipment must not be used by children or persons with reduced physical, sensory or mental abilities, or lacking in experience and expertise, unless supervised or instructed. Children may not use the equipment, nor may they play with the unit or in the immediate vicinity.
• Do not run the pump dry. If run dry, the surface temperature of the pump will rise to a high temperature that could cause skin burns if touched and will cause serious damage to your pump.
• Equipment can start automatically. Lockout-Tagout before servicing equipment.
• The pump has been evaluated for use with water only. Pump should only be used with liquids compatible with pump component materials.
• An inoperative or malfunctioning pump could lead to flooding, resulting in personal injury or property damage.
• Pump may become hot during operation. Allow pump to cool before servicing.
• Operation of this equipment requires detailed installation and operation instructions provided in this manual. Read entire manual before starting installation and operation. End User should receive and retain manual for future use.
• Keep safety labels clean and in good condition.
• Keep work area clean, well-lit, and uncluttered.
• Wear safety glasses while installing or performing maintenance on the pump.

INSTALLATION

Typical Installation

1. Check valve
2. Gate valve
3. Discharge
4. Pump
5. Suction line
6. Strainer

Pump Location

• Install the pump in a clean, dry, and ventilated location shielded from direct sun and precipitation.
• Provide adequate room for future servicing, protection from freezing temperatures, flooding, and equipment drainage.
• Bolt unit down evenly on a good foundation, preferably concrete, to prevent unnecessary stresses from pump movement.
• Install as close as possible to water source to minimize suction piping length.

Piping Instructions

NOTICE
Risk of damage to pump or other equipment.

• Support pump and piping when assembling and when installed.

• Do not over-tighten piping connections.

  1. Install a new, clean pipe for the suction line.
     NOTE: Do not exceed 25 feet of total suction lift.
  • Make sure piping rises vertically or is sloped continually upward from the water source to the pump inlet connection with no high spots.
  • Ensure that piping matches the pump connection sizes.
  • Avoid the use of unions if possible.
  • For long runs, increase connections by one pipe size.
  2. Use pipe thread sealant on suction piping for airtight connections.
  3. Install a strainer at the end of the suction line.
  • Ensure the strainer remains well submerged at all times.
  4. Install discharge piping.
  5. Tighten the discharge pipe, using an opposing pipe wrench on the pump discharge.
  • Ensure that piping matches the pump connection sizes.
  • Avoid the use of unions if possible.
  • For long runs, increase connections by one pipe size.
  6. Install a check valve.
  • All discharge piping must have a pressure rating capable of withstanding the incoming inlet pressure plus the pump’s maximum shut-off head pressure.
    IMPORTANT: Do not operate the pump under a no-flow/shut-off head condition.
  7. Use pipe thread sealant on discharge piping for airtight connections.

Electrical Connections

WARNING
Risk of severe injury or death by electrical shock.

• To reduce risk of electrical shock, disconnect power before working on or around the system.

NOTICE
Risk of damage to pump or other equipment.

• Failure to provide proper overload protection to the motor will void the warranty.
  1. Employ an electrician.
  2. Provide a separate circuit from the distribution panel to the pump unit, properly protected with a fuse or circuit breaker.
  3. Install a proper fused disconnect switch in the line.
  • Make sure the correct gauge of cable is used to carry the load.
  4. Wire the motor according to the motor nameplate to achieve clockwise rotation.
  • If needed, remove motor end compartment for viewing.
  • Very long leads will require a larger cable.
  • Make sure the insulated green or bare ground wire is securely connected to the green ground terminal screw on the motor terminal board.

OPERATION

WARNING
Risk of severe injury or death by electrical shock, high temperatures, or pressurized fluids.

• To reduce risk of electrical shock, disconnect power before working on or around the system.
• Do not continuously run pump against closed discharge. Release all system pressure before working on any component.

NOTICE
Risk of damage to pump or other equipment.

• Do not let the unit run dry (without liquid). It is designed to be cooled by pumping fluid. The seal may be damaged and the motor may fail if the pump is allowed to run dry.

  1. Prime the pump.
  • Remove priming plug.
  • Pour water into the priming port.
  • Fill the pump and suction line with water.
  • Rotate motor shaft to let air in casing escape.
  • Refill at the priming port and replace priming plug.
  2. Start the pump.
  3. Gradually open the discharge valve to the halfway point.
  • If the pump does not deliver water within seconds, stop the motor and prime pump again.
    NOTE: Several starting attempts may be necessary to expel all air from the pump and suction lines.
  4. Once the pump is fully functioning, completely open the discharge valve and a system outlet.

MAINTENANCE

WARNING
Risk of severe injury or death by electrical shock.

• To reduce risk of electrical shock, disconnect power before working on or around the system.
  • Check the pump periodically for loose or rubbing parts.
  • Service immediately if any unusual noise, leaks, or vibrations develop.
  • Drain the pump should it be subjected to freezing temperatures.

Draining the Pump

1. Remove the pipe plug from bottom of pump case.
2. Allow the water to drain.
3. Install the pipe plug to the pump case.

Disassembly

1. Shut down system and lock out power.
2. Allow pump components to adequately cool.
3. Drain the pump.
   • Refer to “Draining the Pump” on page 6.

Pump Shaft Disassembly

1. Unbolt and remove the casing, laying aside the case gasket.

2. Take the diffuser and ring diffuser off the volute.

3. Remove impeller and shaft key:
   IMPORTANT: Beware of breaking the back of the impeller.

   • Remove the impeller bolt and washer.
   • For corroded assemblies, flip the pump vertically and apply a penetrating oil to the impeller.
   • Pry the impeller from the shaft.
   • Remove the shaft key.

4. Spray the shaft sleeve with WD-40 and remove the rotating portion of the mechanical seal.

5. Unbolt the motor adapter from the motor and remove.
   IMPORTANT: Be sure not to damage the stationary part of the mechanical seal.

6. Gently tap the stationary part of the mechanical seal from the motor adapter using a flat-blade screwdriver and rubber mallet.

7. If necessary, remove the shaft sleeve and slinger.

   • Clean the shaft sleeve with 000 steel wool and WD-40.

8.  Replace worn parts with new during reassembly.

Pump Check Valve Disassembly

1. Unbolt and remove the check valve from the volute.

2. Loosen the nut and set aside.

3. Pull the bolt and set aside the flat washer, top weight, flapper, and bottom weight.
   NOTE: The top weight is heavier, and sits on the pump side of the check valve.

4. Inspect disassembled components. Replace the worn parts with new during reassembly.

Reassembly

Pump Check Valve Reassembly

1. Insert the flapper bolt through bottom weight and flapper.
2. Add the top weight and flat washer to the bolt.
3. Screw on the nut.
   • Torque to 65 in-lbs.
4. Bolt the check valve assembly to the volute.
   • Torque to 20 ft-lbs.

Pump Shaft Assembly

1. Slide water slinger onto motor shaft.

2. Install the shaft sleeve onto motor shaft.

   • Apply Loctite 7649 primer to motor shaft and inside of shaft sleeve.
   • Apply a ring of green Loctite 648 retaining compound around the inside leading edge of the shaft sleeve and a line along the motor shaft.
   • Rotate the sleeve at least two times before fully seating the sleeve against shaft shoulder.
   • Wipe off excess lubricant.
   • Let stand 3 minutes.

3. Insert a new stationary portion of the mechanical seal into the motor adapter.

   • Ensure the bracket socket is clean before installation.
   • Lubricate seal and socket with P-80 lubricant to ease installation.
   • Do not contaminate the seal face.

4. Bolt the motor adapter to the motor.

   • Use Blue Loctite 243 on bolts.
   • Torque to 20 ft-lbs.
     IMPORTANT: Be sure not to damage the stationary part of the mechanical seal.

5. Install the rotating portion of the mechanical seal onto the shaft sleeve so that the rotating ring sits against the stationary ceramic seal face.

   • Lubricate seal with P-80 lubricant to ease installation.
   • Do not contaminate the seal face.
     NOTE: If there is a retainer on the seal spring, discard it.

6. Install the shaft key and impeller.

   • Slide the shaft key onto the shaft.
   • Use antiseize between shaft and impeller.
   • Install the impeller with its washer and bolt onto the shaft.
   • Use Red Loctite 271 on the impeller bolt.
   • Torque the impeller bolt to 20 ft-lbs.

7. Ensure the impeller eye is perpendicular to the adapter flange.

8. Ensure the impeller spins freely.

9. Place the square ring and diffuser on the volute.

10. Reposition the case gasket and bolt the volute to the motor adapter.

    • Use Blue Loctite 243 on bolts.
    • Torque to 20 ft-lbs.

Troubleshooting

Motor Fails to Start or Not Running

| Motor thermal protector tripped| Correct cause for high amperage, such as low voltage or excessive pumping.
Open circuit breaker or blown fuse| Check electric wiring and motor for short circuits and correct.
Impeller binding| Remove pump case and check for debris.
Motor improperly wired| Check complete suction line and all fittings for air leaks and verify foot valve has adequate submergence.
Defective motor| Take to an authorized motor shop for repair or replacement.

Little or no discharge

| Pump is not primed: air or gases in pumpage| Check suction line and foot valve for leaks. Make sure that water level has not dropped to uncover suction inlet. Prime pump.
Discharge or suction plugged or valve closed| Clear obstructions from suction and discharge lines.
Low voltage or phase loss| Correct incoming power to match motor nameplate require- ments.
Impeller worn or plugged| Clean or replace impeller.
System head too high| Reduce system head (backpressure on pump) or resize pump.
Excessive suction lift or losses, or NPSHA too low for the pump| Locate pump closer to the water source, increase pipe size or resize pump.

Low pump capacity or pressure

| Valves in suction or discharge lines partially closed| Open valves to reduce possible restrictions.
Suction or discharge line partially plugged| Clear obstructions from discharge line.
Wrong pump rotation| Correct to proper rotation.
Excessive power consumption| Impeller binding| Remove pump case and check for debris.
Discharge head too low creating excessive flow rate| Close down discharge valve to increase pressure and throttle back flow rate.
Fluid viscosity: specific gravity too high| Modify fluid properties or resize pump.

Excessive noise and vibration

| Impeller binding| Remove pump case and check for debris.
Pump is not primed: air or gases in pumpage| Check complete suction line and all fittings for air leaks and verify foot valve has adequate submergence.
Discharge or suction plugged or valve closed| Clear obstructions from suction and discharge lines.
Impeller worn or plugged| Clean or replace impeller.
Excessive suction lift or losses. NPSHA too low for the pump| Locate pump closer to the water source, increase pipe size or resize pump.
Discharge head too low, creating excessive flow rate| Close down discharge valve to increase pressure and throttle back flow rate.
Worn bearing| Check bearing for damage and replace if necessary.
Pump, motor, or piping loose| Verify all connections and mountings are secure and piping supported.
Water leakage at

pump shaft

| Defective seal assembly| Replace seal.

For technical assistance, parts, or repair, please contact:

888.885.9254
redlionproducts.com
232895 Rev. 001 02/23

Copyright © 2023, Franklin Electric, Co., Inc. All rights reserved.

References

• Red Lion Pump Products
• Red Lion Pump Products

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