Milton Roy Roytronic A Series Instruction Manual
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Milton Roy Roytronic A Series Instruction Manual

Electronic metering pumps
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Instruction
For file reference, please record the following data:
Model No: _____________________________________
Serial No: _____________________________________
Installation Date: ________________________________
Installation Location: _____________________________
When ordering replacement parts for your LMI Metering Pump
or Accessory, please include complete Model Number and
Serial Number of your unit.
Carefully read and understand all precautions before
installing or servicing any metering pump.
Electronic Metering Pumps
Manual
Series A
®
201 Ivyland Rd.
Ivyland, PA 18974
TEL: (215) 293-0401
FAX: (215) 293-0445
www.lmipumps.com
Lit# 2002.B 12/2012

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  • Page 1 Manual Instruction Series A ® Electronic Metering Pumps For file reference, please record the following data: Model No: _____________________________________ Serial No: _____________________________________ Installation Date: ________________________________ Installation Location: _____________________________ When ordering replacement parts for your LMI Metering Pump or Accessory, please include complete Model Number and Serial Number of your unit.
  • Page 2 ® Series A Model A 7 5 1 - 8 2 8 S I Model Code Configuration Control Code Speed (stroking frequency) fixed and stroke length manually adjustable Speed (stroking frequency) and stroke length manually adjustable External control capability through pulse input and low level float switch plus manual control adjustments of control code 0 External control capability through pulse input and low level float switch plus manual control adjustments of control...

  • Page 3: Table Of Contents

    Contents Precautions ..............4 Introduction .

  • Page 4: Precautions

    PRECAUTIONS 1.0 PRECAUTIONS The following precautions should be taken when working with LMI metering pumps. Please read this section carefully prior to installation. Protective Clothing ALWAYS wear protective clothing, face shield, safety glasses and gloves when working on or near your metering pump. Additional precautions should be taken depending on the solution being pumped.
  • Page 5 PRECAUTIONS Plumbing Always adhere to your local plumbing codes and requirements. Be sure installation does not constitute a cross connection. Check local plumbing codes for guidelines. LMI is not responsible for improper installations. Back Pressure/Anti-Syphon Valve If you are pumping downhill or into low or no system pressure, a back pressure/anti- syphon device such as LMI’s Four-Function Valve should be installed to prevent over- pumping or syphoning.

  • Page 6: Introduction

    INTRODUCTION 2.0 Introduction LMI is the world’s most versatile manufacturer of economical and efficient metering pumps. This manual addresses the installation, maintenance and troubleshooting proce- dures for manually and externally controlled pumps. LMI has a worldwide network of stocking representatives and authorized repair centers to give you prompt and efficient service.

  • Page 7: Unpacking Check List

    UNPACKING CHECK LIST Unpacking Check List Your carton will contain many or all of the following items. Please notify the carrier immediately if there are any signs of damage to the pump or its parts. Metering Pump Foot Valve Tubing (0 to 3 Rolls) Ceramic Foot Valve Injection Check Four-Function Valve...

  • Page 8: Installation

    INSTALLATION 3.0 Installation Pump Location and Installation Locate pump in an area convenient to solution tank and electrical supply. The pump should be accessible for routine maintenance, and should not be operated in ambient temperatures above 113°F (45°C). If the pump will be exposed to direct sunlight, LMI black, UV resistant tubing should be installed.

  • Page 9: Suction Lift - Wall Bracket Mount

    INSTALLATION 3.2.2 Suction Lift - Wall Bracket Mount The pump may be mounted using an LMI Wall Mount Bracket Assembly (part no. 34643) directly above the solution tank. A pump mounted in this manner allows for easy chang- ing of solution tanks or drums. 3.2.3 Suction Lift - Tank Mount The pump may be mounted on a molded tank provided there is a recess to keep the pump stationary.

  • Page 10: Tubing Connections

    INSTALLATION Tubing Connections Use only LMI tubing. DO NOT USE CLEAR VINYL TUBING ON THE DISCHARGE SIDE OF THE PUMP. The pressure created by the pump can rupture vinyl tubing, which is only for connection to the return line of the FastPrime fitting.

  • Page 11: Four-Function Valves (4-Fv)

    INSTALLATION Four-Function Valves (4-FV) Your pump may be equipped with a 4-FV, or standard discharge valve. If your pump is not equipped with a four-function valve and you feel it is needed in your application, it can be purchased as an accessory. Contact your local LMI stocking distributor. The features of a 4-FV are listed below.

  • Page 12: Four-Function Valve Installation

    INSTALLATION Four-Function Valve Installation Discharge To install a 4-FV, the 4-FV Fitting and Coupling Nut should be 1/4" Through assembled with the appropriate cartridges into the discharge port 1/4" Tubing of the pump. Use a 13/16” or 20 mm socket to tighten fitting. Tight- Four-Function ening to 50 inch-pounds is recommended.

  • Page 13: Autoprime

    INSTALLATION AutoPrime™ The AutoPrime™ Liquid End is equipped with a valve that allows for constant removal of vapors and gasses inherent with effervescent chemicals such as Sodium Hypochlorite and Hydrogen Peroxide. The valve keeps the pump primed automatically. When install- ing a pump equipped with an AutoPrime™...

  • Page 14: Foot Valve/Suction Tubing Installation

    INSTALLATION Foot Valve/Suction Tubing Installation The Foot Valve acts as a check valve to keep the pump primed in suction lift applications. The foot valve is designed to be submersed in the solution tank or drum and must sit in a vertical position at the bottom.

  • Page 15: Injection Check Valve And Discharge Tubing Installation

    INSTALLATION Injection Check Valve and Discharge Tubing Installation The Injection Check Valve prevents backflow from a treated line. Install the injection check valve at the location where chemical is being injected into the system. Any size NPTF fitting or pipe tee with a reducing bushing to 1/2" NPTF will accept the injection check valve.

  • Page 16: Operation

    OPERATION 4.0 Operation Output Adjustment Controls 1. Power/Mode Selection Button: This button allows convenient starting and stopping of the pump. For pumps with external control capability (A3, A7, A8) this button switches pump operation between internal and external modes. When operating in internal mode the Pulse Indicator Light will flash green.

  • Page 17: Start-Up And Adjustment

    DETAIL D SCALE 5 : 1 OPERATION 7. External Control Connector (5-Pin): This connector is for the connection of various ➁ options and accessories that can be used to externally control the pump. The pin func- tions (and the wire color for the standard LMI external control cable) are as follows: 1.

  • Page 18: Start-Up/Priming For Pump Supplied With 4-Fv

    OPERATION 4.2.2 Start-Up/Priming for Pump Supplied with 4-FV Read this entire section completely before proceeding. When all precautionary steps have been taken, the pump is mounted, and the tubing is securely attached, you may now start priming the pump. If the pump does 1.

  • Page 19: Total Pump Output

    OPERATION 4.3.1 Total Pump Output Calculate the approximate output of the pump as follows: When converting PUMP OUTPUT = MAX PUMP OUTPUT x % SPEED x % STROKE between different units, remember Example: A151-928SI these conversion factors: Use Max Output (from dataplate on side of pump) = 1 GPH (1 gallon per hour). 1 Gallon = 3.785 Liters If the pump is set at 60% speed and 70% stroke length, the approximate pump out-...

  • Page 20: Calibration In External Mode

    OPERATION 4.3.3 Calibration in External Mode 1. Since pump output is governed by an external device such as Flowmeter-Pulser, Liquitron Controller, or 4-20 mA DC signal from an instrument with an LMI ™ Analog-to-Digital Converter, only the output per stroke may be calibrated. It may be helpful 2.

  • Page 21: Methods Of Externally Triggering Or Pacing A3, A7, And A8 Pumps

    OPERATION Methods of Externally Triggering or Pacing A3, A7, and A8 Pumps Method of Triggering A3, and A7 Pumps Through External Control Connector Switch or transistors must be capable of switching 24V DC at Blue 15 milliamperes. Minimum time in low impedance state (ON) is 1.

  • Page 22: Control Modes

    OPERATION 4.4.1 Control Modes 4.4.1.1 Local Mode • When in Local mode the A3 pump runs continuously at maximum speed. • When in Local mode A7 and A8 pumps run at the speed indicated by the speed knob. 4.4.1.2 Remote Mode (for A3, and A7) Pins 1 (brown wire) and 2 (white wire) must be connected/shorted together in order for The default the pump to respond to pulses in external mode.
  • Page 23 THIS PAGE IS INTENTIONALLY BLANK...

  • Page 24: Spare Parts Replacement And Routine Maintenance

    MAINTENANCE 5.0 Spare Parts Replacement and Routine Maintenance LMI recommends replacing the elastomeric components of the pump on an annual basis. Refer to the LMI Metering Pump Price List for the proper Spare Parts Kit or RPM Pro kit number or contact your local LMI stocking distributor. ™...

  • Page 25: Liquifram ™ (Diaphragm) Replacement

    MAINTENANCE Liquifram (Diaphragm) Replacement ™ ALWAYS wear protective clothing, face shield, safety glasses and gloves when working near or performing any maintenance or replacement on your pump. See MSDS information from solution supplier for additional precautions. LMI metering pumps are designed for trouble-free operation, yet routine maintenance of elastomeric parts is essential for optimum performance.

  • Page 26: Cartridge Valve And O-Ring Replacement

    MAINTENANCE Cartridge Valve and O-ring Replacement ALWAYS wear protective clothing, face shield, safety glasses and gloves when working on or performing any maintenance or replacement on your pump. See MSDS information from solution supplier for additional precautions. Refer to the LMI Metering Pump Price List for the proper Spare Parts Kit or RPM Pro kit number or contact your local LMI stocking distributor.

  • Page 27: Injection Check Valve Parts Replacement

    MAINTENANCE Injection Check Valve Parts Replacement Depressurize and drain pipeline (or isolate Injection Check Valve point using valves) so that Injection Check Valve can safely be disassembled. ALWAYS wear protective clothing, face shield, safety glasses and gloves when working near or performing any maintenance or replacement on your pump.

  • Page 28: Fastprime™ Valve O-Ring Replacement

    MAINTENANCE FastPrime™ Valve O-Ring Replacement ALWAYS wear protective clothing, face shield, safety glasses and gloves when performing any maintenance or replacement on your pump. Refer to the LMI Metering Pump Price List for the proper Spare Parts Kit or RPM Pro kit number or contact your local LMI stocking distributor.
  • Page 29 MAINTENANCE FastPrime™ Valve O-Ring Replacement (continued) 6. Recut 1 to 2 inches off the tip of the return line and ensure the end is squared. Press the return line tubing on completely past the barbs. O-Rings O-Rings Retaining Nut 3/8" Clear Vinyl Tubing FastPrime Valve FastPrime...

  • Page 30: Stroke Length Setting

    MAINTENANCE 5.7 Stroke Length Setting The Stroke Adjustment Knob is calibrated for each pump, and does not need to be re- moved during Liquifram™ replacement or during most other maintenance. If the Stroke Knob is removed for any reason it becomes necessary to reset the stroke length. Follow the procedure below to approximate the proper factory setting.

  • Page 31: A Drive Parts List

    MAINTENANCE 5.8 Series A Drive Parts List Bubble Bubble Description Description Number Number PolePiece O-Ring Drive Assembly Screws EPU Return Spring Stroke Shaft O-Ring EPU Shim Warning Label Plunger O-Ring Shaft Seal Retaining Ring Adapter Disk Drive Housing Clear Cover EPU Attachment Bolt Control Panel Assembly EPU Attachment Washer...

  • Page 32: Epu Wiring Diagram

    MAINTENANCE 5.9 EPU Wiring Diagram A0/A1 PULSER A3/A7/A8 PULSER BLK OR BRN WHT OR BLU WHT OR BLU BLK OR BRN GRN OR GRN/YEL GRN OR GRN/YEL EPU ASSEMBLY EPU ASSEMBLY POWER CORD POWER CORD 5.10 Liquid End Parts List Bubble Description Number...
  • Page 33 MAINTENANCE Machined FastPrime Liquid End...
  • Page 34 MAINTENANCE Molded FastPrime Liquid End...
  • Page 35 MAINTENANCE AutoPrime Liquid End...
  • Page 36 MAINTENANCE SS Liquid End...

  • Page 37: Troubleshooting

    TROUBLESHOOTING 6.0 Troubleshooting PROBLEM POSSIBLE CAUSE SOLUTION Pump Will Not Prime 1. Pump not turned on or plugged in. 1. Turn on pump/plug in pump. 2. Output dials not set properly. 2. Always prime pump with speed and stroke at 100%. 3.
  • Page 38 TROUBLESHOOTING 6.0 Troubleshooting (continued) PROBLEM POSSIBLE CAUSE SOLUTION Leakage at tubing 1. Worn tubing ends. 1. Cut about 1 in (25 mm) off tubing and then replace as before. 2. Loose or cracked fitting. 2. Replace fitting if cracked. Carefully hand tighten fittings.
  • Page 39 NOTES...
  • Page 40 Pro Pac are trademarks of Milton Roy Company, Printed in USA Roytronic is a registered trademark of Milton Roy Company, Specifications subject to change without notice. Teflon is a registered trademark of E. I. du Pont de Nemours & Co., Inc.

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