Milton Roy GB Series Instruction Manual
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Milton Roy GB Series Instruction Manual

Milton Roy GB Series Instruction Manual

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Instruction Manual
Series G Model "B" Pump
GB.MR.ENG.339-0049-000.04/2020

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Summary of Contents for Milton Roy GB Series

  • Page 1 Instruction Manual Series G Model “B” Pump GB.MR.ENG.339-0049-000.04/2020...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SECTION 1 DESCRIPTION … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … GENERAL …...
  • Page 3 LIST OF ILLUSTRATIONS Figure 1-1. Sample Nameplate … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … Figure 2-1. Handling a Series GB Pump …...

  • Page 4: Section 1 Description

    If the fluid pressure drops below the vapor pressure, cavitation will occur, negatively impacting the performance of the pump. If you suspect the possibility of cavitation, contact your Milton Roy Representative for assistance. As the diaphragm starts forward on the discharge stroke, the pressure immediately rises inside the liquid end.

  • Page 5: Product Code

    Accuracy ±1.5% of 100% rated flow between 10% and 100% of rated flow Adjustment Lockable micrometer is adjustable from 0% to 100% while pump is running or stopped Lubrication Oil bath Temperature Ambient and Liquid: 50℃ Maximum -10 ℃ Minimum (Metal Liquid End) 10 ℃...

  • Page 6: Section 2 Installation

    Equipment should be stored 12 inches or more above the ground. If equipment is to be shipped directly from Milton Roy into long term storage, contact Milton Roy to arrange for factory preparation.

  • Page 7: Handling Of Pump

    3. For all electrical equipment, place packets of Vapor Phase Corrosion Inhibitor (VPCI) inside of the enclosure, then place the entire enclosure, with additional packets, inside a plastic bag. Seal the bag tightly closed. Contact Milton Roy Service Department for recommended VPCI materials. HANDLING OF PUMP To avoid damaging the pump while moving or installing a Series G pump, follow the instructions below.

  • Page 8: Piping

    To minimize viscous flow losses when handling viscous liquids, it may be necessary to use suction piping up to four times larger than the size of the suction connection on the pump. If in doubt, contact your nearest Milton Roy representative to determine the necessary pipe size. General Piping Considerations ●Use extreme care in piping to plastic liquid end pumps with rigid pipe such as PVC.

  • Page 9: Figure 2-4. Suction Lift Installation

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

  • Page 10: Leak Detection

    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; however, back pressure valves for large pumps with long and extremely small discharge lines may have to be installed near the point of discharge into the process (to minimize siphoning tendencies).

  • Page 11: Electrical Connection

    With switch and gauge Series G Model B pump also is available with an option that includes tubing to a pressure gauge and switch as shown in figure 6-18 In the event of a diaphragm leak the process fluid is trapped inside the system and pressure switch (760) is tripped to set an alarm or shutdown.

  • Page 12: Section 3 Operation

    SECTION 3 OPERATION INITIAL START-UP Check that all mounting bolts are tight, piping is installed properly, and the discharge line is open. Check oil drain plug for tightness. Remove the oil fill cap and fill the pump casing until level is between the markings on the oil fill cap dipstick, (approximately 3 quarts (2.8 Liters )).
  • Page 13 This method is recommended for hazardous liquids because it eliminates operator contact with the liquid. Milton Roy test-tube Calibration Columns are available for convenient and accurate calibration of any pump. The pump can also be calibrated by collecting and measuring pumped liquid at the pump discharge port. It may be necessary to create discharge head at the liquid take off point so that the pump will operate properly.

  • Page 14: Section 4 Maintenance

    A Materials Safety Data Sheet must accompany all returns. All inquiries or parts orders should be addressed to your local Milton Roy representative or distributor. PREVENTIVE MAINTENANCE Milton Roy pumps are carefully designed, manufactured, assembled, and quality tested to give reliable service with minimal maintenance.

  • Page 15: Corrective Maintenance

    Check Valves Milton Roy Company recommends that check valve balls, seats, gaskets, and o-rings be replaced on a annual basis. If highly corrosive material (acids, slurries, etc.) is being pumped, some applications may require more frequent replacement. To determine if check valves need maintenance, disassemble the check valves following the instructions in the "Corrective Maintenance"...
  • Page 16 easily from the other liquid end parts. 2. Unscrew the ball guide (424) from the liquid end. 3. Screw the union nut part way (one or two turns) onto the end of the ball guide that has the seat in it. Be sure the union nut is on loosely.
  • Page 17 5. Screw the valve Assembly into the liquid end body (hand tight only). DO NOT OVER TIGHTEN. DO NOT OVER TIGHTEN. GB0080 0080~GB ~GB0450 0450 Liquid End Stainless Steel Check Valves: Disassembly Liquid End Stainless Steel Check Valves: Disassembly Refer to Figure 6-12 GB0080~GB0450 stainless steel check valves differ from the plastic versions in that the ball seat is integral to the ball guide.
  • Page 18 GB0500 0500~GB ~GB1500 1500 Liquid End Stainless Steel Check Valves: Reassembly Liquid End Stainless Steel Check Valves: Reassembly Refer to Figure 6-13 ~6-15 1. Drop the ball into the curved inner chamber end of the ball guide. 2. Place a new gasket on the rim of the ball guide, and sit the seat on top of the ball guide, trapping the ball and gasket between the seat and ball guide.
  • Page 19 please make sure the reagent and the transported process liquid are compatible with each other. GB1800 1800 Liquid End Plastic Check Valves: Reassembly Liquid End Plastic Check Valves: Reassembly Refer to Figure 6-11 1. Fit new o-rings into the relevant position of valve body, valve seat and limited position plate. NOTE: To assure a tight, leak free seal, new o-rings should be used each time the check valves are disassembled.
  • Page 20 the diaphragm assembly. If you plan to replace both, refer to the" Replacing the Oil Seal" instructions, and disregard the instructions below. These instructions are intended for use only if the diaphragm assembly is being replaced independent of the oil seal. Before beginning diaphragm replacement, make sure that all shut-off valves are closed and all pressure is bled from the liquid end.
  • Page 21 bled from liquid end. When replacing the oil seal, the diaphragm assembly must be removed first. For ease of service, it is recommended that the oil seal be replaced in conjunction with the diaphragm assembly. Therefore, the instructions below include the "Diaphragm Assembly Replacement " instructions, and can be used for oil seal replacement and diaphragm assembly replacement.

  • Page 22: Section 5 Troubleshooting Guide

    SECTION 5 TROUBLESHOOTING GUIDE SYMPTOMS & REMEDIES Pump will not operate....● Low process liquid level in the tank. Add liquid. ● Worn or dirty check valves. Clean or replace. ● Blocked discharge line. Clear line. ● Frozen liquid. Thaw liquid throughout pumping system. ●...
  • Page 23 Motor and pump body hot......● Normal operating temperature of both motor and pump body is frequently uncomfortable to the touch. However, neither should exceed 200°F (93℃). ● Power supply does not match electrical requirement of motor. Insure proper matching of power supply and motor. ●...

  • Page 24: Section 6 Parts

    SECTION 6 PARTS Figure Figure . Series GB Basic Parts - Side View . Series GB Basic Parts - Side View...

  • Page 25: Figure 6-2. Series Gb Basic Parts - Top View

    Figure Figure . Series GB Basic Parts - Top View . Series GB Basic Parts - Top View...

  • Page 26: Parts List For Gb Drive Assembly

    Parts List for GB Drive Assembly (Refer to Figure Parts List for GB Drive Assembly (Refer to Figure & & Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Drive Housing Assembly H60900 O-ring, 14 × 2.65 S4080068031 Drain Plug.

  • Page 27: Parts List For Gb Drive Assembly - Continued

    Parts List for GB Drive Assembly - continued (Refer to Figure Parts List for GB Drive Assembly - continued (Refer to Figure & & Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Worm Assembly , 40:1, (IEC 71) H60903 Worm Assembly, 40:1, (IEC 80) H60909...

  • Page 28: Figure 6-3. Gb0080~Gb0450 Plastic Check Valve Parts

    CHECK VALVE PARTS CHECK VALVE PARTS Suction Discharge Figure 6-3. GB0080-GB0450 Plastic Check Valve Parts Suction Discharge Figure 6-4. GB0080~GB0450 High Viscosity Check Valve Parts Suction Discharge Figure 6-5. GB0500-GB0600 Plastic Check Valve Parts Suction Figure 6-6 GB0500-GB0600 High Viscosity Check Valve Parts Discharge...

  • Page 29: Figure 6-7 Gb0700-Gb1200 Plastic Check Valve Parts

    Suction Figure 6-7 GB0700-GB1200 Plastic Check Valve Parts Discharge Suction Figure 6-8 GB0700-GB1200 High Viscosity Check Valve Parts Discharge Discharge Figure 6-9 GB1500 Plastic Check Valve Parts Suction Suction Figure 6-10 GB1500 High Viscosity Check Valve Parts Discharge...

  • Page 30: Figure 6-11 Gb1800 Plastic Check Valve Parts

    Discharge Suction Figure 6-11 GB1800 Plastic Check Valve Parts...

  • Page 31: Figure 6-12. Gb0080~Gb0450 Stainless Steel Liquid End

    Figure Figure GB0080 0080~GB ~GB0450 0450 Stainless steel liquid End Stainless steel liquid End...

  • Page 32: Parts List For Gb0080~Gb0450 Liquid End

    Parts List for GB Parts List for GB0080 0080 ~ GB GB0450 0450 Liquid End (Refer to Figure Liquid End (Refer to Figure Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Check Valve Assembly(PVC LE) H60921 Check Valve Assembly(PVDF LE) H60817...

  • Page 33: Parts List For Gb0500~Gb1200 Liquid End

    Figure Figure GB0500 0500~GB ~GB0600 0600 Stainless steel liquid End Stainless steel liquid End...

  • Page 34: Figure 6-14. Gb0700~Gb1200 Stainless Liquid End

    Figure Figure GB0700 0700~GB ~GB1200 1200 Stainless Liquid End Stainless Liquid End...

  • Page 35: Parts List For Gb1500 Liquid End

    Parts List for GB Parts List for GB0500 0500 ~ GB GB0600 0600 Liquid End (Refer to Figure Liquid End (Refer to Figure Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Check Valve Assembly, (PVC LE) H60926 Check Valve Assembly, (PVDF LE) H60927...

  • Page 36: Parts List For Gb1800 Liquid End

    Parts List for GB Parts List for GB0700 0700 ~ GB GB1200 1200 Liquid End (Refer to Figure Liquid End (Refer to Figure Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Suction Check Valve Assembly (PVC LE) H60944 Discharge Check Valve Assembly (PVC LE) H60926...

  • Page 37: Figure 6-15. Gb1500 316Ss Liquid End

    Figure Figure GB1500 1500 316SS Liquid End SS Liquid End...
  • Page 38 Parts List for GB Parts List for GB1500 1500 Liquid End (Refer to Figure Liquid End (Refer to Figure Item Number Item Number Part Number Part Number Description Description Material Material Qty. Qty. Suction Check Valve Assy. H60944 Discharge Check Valve Assy H60945 Suction Check Valve Assy PVDF...

  • Page 39: Figure 6-16. Gb1800 316Ss Liquid End

    Figure Figure GB1800 1800 316SS Liquid End SS Liquid End...
  • Page 40 Parts List For GB Parts List For GB1800 1800 Liquid End (Refer to Figure Liquid End (Refer to Figure Item Number Item Number Description Description Material Material Part Number Part Number Qty. Qty. Suction Check Valve Assy H60947 Discharge Check Valve Assy H60963 Suction Check Valve Assy PVDF...

  • Page 41: Figure 6-17. Double Diaphragm (Standard, All Liquid End Sizes)

    Figure Figure 17. Double Diaphragm (Standard, All Liquid End Sizes) . Double Diaphragm (Standard, All Liquid End Sizes) Check Valve(Refer to figure 6-3 ~ 6-16)

  • Page 42: Figure 6-18. Leak Detection, Switch And Gauge (Standard, All Liquid End Sizes)

    Figure Figure 18. Leak Detection, Switch and Gauge (Standard, All Liquid End Sizes) . Leak Detection, Switch and Gauge (Standard, All Liquid End Sizes)

  • Page 43: Parts List For Gb Double Diaphragm Liquid End With Switch And Gauge

    Parts List for GB Double Diaphragm Liquid End with Switch and Gauge (Refer to Figure Parts List for GB Double Diaphragm Liquid End with Switch and Gauge (Refer to Figure ， ， 17， ， Item Number Item Number Description Description Material Material Part Number...

This manual is also suitable for:

Gb0080Gb0450Gb0500Gb1200Gb1500Gb1800

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