Red Lion RLHE-300 Cast Iron Industrial Sprinkler Pump

Safety Instructions

⚠ DANGER: 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 properly 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.

Installation

Typical Installation

⚠ 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.

Diagram: Typical Installation Components

The typical installation diagram shows the following components:

• 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.

Operation

Electrical Connections

• 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.

⚠ 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.

Priming the Pump

• 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

Draining the Pump

⚠ 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.

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.

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.
5. IMPORTANT: Be sure not to damage the stationary part of the mechanical seal.
6. 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.
7. 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.
8. Ensure the impeller eye is perpendicular to the adapter flange.
9. Ensure the impeller spins freely.
10. Place the square ring and diffuser on the volute.
11. Reposition the case gasket and bolt the volute to the motor adapter.
• Use Blue Loctite 243 on bolts.
• Torque to 20 ft-lbs.

Troubleshooting

Troubleshooting Table