Milton Roy PRIMEROYAL Instruction Manual
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Milton Roy PRIMEROYAL Instruction Manual

Milton Roy PRIMEROYAL Instruction Manual

Dosing pump
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INSTRUCTION MANUAL
Dosing Pump PRIMEROYAL ®
This manual should be made available to the person responsible for installation, operating and
DATE : 5/18/2018
FOR INSTALLATION
OPERATING, AND
MAINTENANCE.
Packed Plunger
maintenance.
N : 56960
REV : 0

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  • Page 1 INSTRUCTION MANUAL FOR INSTALLATION OPERATING, AND MAINTENANCE. Dosing Pump PRIMEROYAL ® Packed Plunger This manual should be made available to the person responsible for installation, operating and maintenance. DATE : 5/18/2018 N : 56960 REV : 0...

  • Page 2: Table Of Contents

    CONTENTS Page Section 1 Description ....................... . Principle of Operation .
  • Page 3 PrimeRoyal Metering Pump........

  • Page 4: Section 1 Description

    Accurate flow control is achievable only if the discharge line pressure (discharge head) is greater than the suction line pressure (suction head). For aid in determining acceptable piping performance, please refer to Milton Roy’s NPSH calculator, available on line at www.miltonroy.com.

  • Page 5: Safety Precautions

    SAFETY PRECAUTIONS When installing, operating, and maintaining the PrimeRoyal keep safety considerations foremost. Use proper tools, protective clothing and eye protection when working on the equipment and install the equipment with a view toward ensuring safe operation. Follow the instructions in this manual and take additional safety measures appropriate to the liquid being pumped.

  • Page 6: Section 2 Installation

    (3.14) times the average flow. Therefore, piping must be designed for a flow 3.14 times the pump capacity; this means that a pump rated for 88 gallons per hour requires piping sufficient for 88 gph (333.1 L/hr) 3.14 (or 276) gph (1044.7 L/hr). Please refer to Milton Roy’s NPSH calculator, on line at www.miltonroy.com...
  • Page 7 Installing a hold-up tower or supply vessel on the suction line close to the pump can help ensure a flooded suction line. (Consult the Milton Roy Company, Flow Control Division for assistance in such applications.) Avoid negative suction pressure conditions (suction lift), as such conditions adversely affect metering accuracy.

  • Page 8: Mounting

    There are a number of ways to create an artificial discharge pressure, such as by installing a vented riser or a back pressure valve. (Please consult Milton Roy Flow Control Division for recommendations to increase back pressure in slurry applications.) When pumping water-treating chemicals directly into boiler drums, use one liquid end assembly for each boiler drum.

  • Page 9: Piping

    Back Pressure Valves A Milton Roy back pressure valve should be installed in the discharge line near the pump to ensure sufficient discharge head pressure for proper pump metering action. Normally, the valve should be located near the pump;...

  • Page 10: Section 3 Operation

    SECTION 3 OPERATION INITIAL START-UP Follow the start up directions in the "Drive" manual (56968) and those listed below. INITIAL ADJUSTMENTS NON-ADJUSTABLE TYPE PACKING "Non-adjustable" Plunger Packing (specified in the pump model number; see Section 1, Model Code) is preset by internal spring pressure and is complete once the Gland Cap (1660 in fig. 4) is fully tightened.

  • Page 11: Preventive Maintenance

    PREVENTIVE MAINTENANCE PrimeRoyal pumps are carefully designed, manufactured, assembled and quality tested to give reliable service with minimal maintenance. However, a daily maintenance check is recommended to visually confirm proper operation of the pump. Packing If an automatic oiler is used, monitor normal lubricant consumption and refill the reservoir before it becomes empty.

  • Page 12: Section 4 Troubleshooting Guide

    SECTION 4 LIQUID END TROUBLESHOOTING GUIDE CAUSES SYMPTOM REMEDIES Low liquid level. Pump will not operate. Add liquid. Blocked discharge line. Clear line. Frozen liquid. Thaw liquid throughout pumping system. Pump not primed. Allow suction line and pump head to fill with liquid before pumping against pressure.
  • Page 13 REMEDIES CAUSES SYMPTOM Erratic delivery. Repair piping. Leaky suction piping. Adust or replace packing. Leaky packing. Repair or replace safety valve. Raise suction tank level or pressurize tank. Cool liquid or increase suction head. Clean or replace. Clean strainer.

  • Page 14: Section 5 Corrective Maintenance

    SECTION 5 CORRECTIVE MAINTENANCE PACKING REPLACEMENT: Packing Replacement (Spring loaded, Non-Adjustable packing type only, Figure 4). The V-Type (Chevron style) packing rings are provided as a set. The set includes the lantern ring, V-rings, seal ring, o-ring and spring. In some cases, a separate kit of V-rings and other soft seal parts (not including the metal parts) may be purchased.

  • Page 15: Check Valve Disassembly

    9. When installing the gland cap, anti-seize lubricant must be applied to the threads. Thread the gland cap onto the liquid end and tighten it until it bottoms out against the packing follower. Note: once the gland cap is tightened the compression on the spring loads the packing. NO OTHER ADJUSTMENT WILL BE NECESSARY.

  • Page 16: Check Valve Reassembly

    Figure 3. Check Valve Parts. Most 1-1/8" and smaller diameter plunger pumps. Disassembly: 1. Disconnect motor power supply. 2. Remove covers. Drain oil from pump casing. 3. Unbolt and remove gland. 4. Loosen plunger adapter. 5. Remove liquid end from pump drive. (Step 1 of “Packing Replacement”). Check Valve Reassembly Reassemble check valves as follows.
  • Page 17 Figure 4. High Pressure "Bar Stock" Liquid End Assembly Drawing...

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