Milton Roy GM0025 User Manual

Series G Model “M” Pump
Instruction Manual
GM.MR.ENG.339-0080-000.04/2020

Milton Roy GM0025 Specifications

General

Brand	Milton Roy
Model	GM0025
Category	Water Pump
Language	English

Summary

SECTION 1 DESCRIPTION

1.1 GENERAL INFORMATION

Overview of the Series G Model M reciprocating chemical dosing pump's capabilities and design features.

1.2 PRINCIPLES OF OPERATION

Explanation of the drive assembly's variable eccentric mechanism and its conversion to linear motion.

1.2.1 Mechanically Actuated Diaphragm Liquid End

Description of the diaphragm's mechanical linkage and its role in suction and discharge phases.

1.3 GENERAL SPECIFICATIONS

Details on flow rate, pressure, liquid end type, drive type, accuracy, lubrication, and temperature limits.

SECTION 2 INSTALLATION

2.1 UNPACKING AND STORAGE

Guidelines for inspecting the pump upon receipt and procedures for both short-term and long-term storage.

2.2 SAFETY PRECAUTIONS

Essential safety warnings and cautions for installation, operation, and maintenance of the pump.

2.3 MOUNTING AND DRIP COLLECTION

Instructions for pump mounting and provisions for containing leaks in case of diaphragm or oil seal failure.

2.4 INSTALLATION GUIDELINES

General guidance on installing the pump, including piping considerations and avoiding air traps.

2.4.1 NPSH AND PIPING CONSIDERATIONS

Guidance on sizing suction piping to accommodate peak flow and general piping recommendations.

2.4.2 SUCTION AND DISCHARGE PIPING

Best practices for suction line installation and guidelines for discharge piping to prevent pressure loss.

2.5 VALVES AND ELECTRICAL CONNECTIONS

Details on back pressure, pulsation dampener, safety, and shut-off valves, plus electrical connection procedures.

SECTION 3 OPERATION

3.1 START-UP PROCEDURES AND CHECKS

Steps to verify pump mounting, oil level, valve positions, and capacity setting before start-up.

3.2 MOTOR CONNECTION CHECK

Procedure to check motor rotation direction against the housing flange marking.

3.3 START-UP

Guidance on starting the pump and performing visual and audio checks for proper operation.

3.4 CAPACITY CALIBRATION

Methods for testing and calibrating pump capacity, including warnings for hazardous liquids.

SECTION 4 MAINTENANCE

4.1 PREVENTATIVE MAINTENANCE

Schedules for changing drive oil, and recommendations for replacing diaphragm, oil seal, and check valves.

4.2 PUMP RETURN AND ROUTINE MAINTENANCE

Procedure for returning pumps for repair and guidance on routine checks for reliable operation.

4.2.1 Seal Integrity & Capacity Checks

Checking seal integrity, pump capacity, and diagnosing leaks from detection ports.

4.2.2 Leak Detection and Spare Parts

Diagnosing diaphragm or oil seal failure and information on stocking and ordering spare parts.

4.3 SPARE PARTS LISTS

Lists of recommended spare parts for various liquid end models.

4.3.1 GM0002~GM0050 Liquid Ends

List of spare parts for GM0002-GM0050 liquid ends (PVC, PVDF, Stainless Steel).

4.3.2 GM0090~GM0500 Liquid Ends

List of spare parts for GM0090-GM0500 liquid ends (PVC, PVDF, Stainless Steel).

4.4 CORRECTIVE MAINTENANCE

Procedures for addressing pump issues and performing repairs.

4.4.1 Check Valve Maintenance

Methods for cleaning fouled check valves and general check valve replacement procedures.

4.4.2 Ball, Seat, Seal & Other Valve Replacements

Steps for replacing ball, seat, seal, and check valves in various liquid end configurations.

4.4.3 Diaphragm and Oil Seal Bellows Replacement

Instructions for replacing the diaphragm assembly and oil seal bellows.

4.5 RESTARTING THE PUMP

Steps to follow after maintenance for safely reconnecting and restarting the pump.

SECTION 5 PARTS LIST

FIGURE 5-1 GM DRIVE SIDE VIEW

Diagram and parts list for the GM drive side view, detailing components.

FIGURE 5-2 GM DRIVE END VIEW

Diagram and parts list for the GM drive end view, detailing components.

FIGURE 5-3 GM0002~GM0010 PVC, PVDF & MIXED LIQUID END-TUBING CONNECTION

Diagram and parts list for GM0002-GM0010 liquid ends with tubing connections for various fluids.

FIGURE 5-4 GM0002~GM0010 PVC, PVDF LIQUID END-LMI (PE) TUBING CONNECTION

Diagram and parts list for GM0002-GM0010 liquid ends with LMI (PE) tubing connections.

FIGURE 5-5 GM0002~GM0010 PVC LIQUID END-THREAD CONNECTION

Diagram and parts list for GM0002-GM0010 PVC liquid ends with threaded connections.

FIGURE 5-6 GM0002~GM0010 STAINLESS STEEL LIQUID END-THREADED CONNECTION

Diagram and parts list for GM0002-GM0010 stainless steel liquid ends with threaded connections.

FIGURE 5-7 GM0002~GM0010 HIGH VISCOSITY LIQUID END-TUBING CONNECTION

Diagram and parts list for GM0002-GM0010 high viscosity liquid ends with tubing connections.

FIGURE 5-8 GM0025~GM0050 PVC, PVDF & MIXED LIQUID END-TUBING CONNECTION

Diagram and parts list for GM0025-GM0050 liquid ends with tubing connections for various fluids.

FIGURE 5-9 GM0025~GM0050 PVC, PVDF LIQUID END-LMI (PE) TUBING CONNECTION

Diagram and parts list for GM0025-GM0050 liquid ends with LMI (PE) tubing connections.

FIGURE 5-10 GM0025~GM0050 PVC LIQUID END-THREADED CONNECTION

Diagram and parts list for GM0025-GM0050 PVC liquid ends with threaded connections.

FIGURE 5-11 GM0025~GM0050 STAINLESS STEEL & SLURRY LIQUID END-THREADED CONNECTION

Diagram and parts list for GM0025-GM0050 stainless steel and slurry liquid ends with threaded connections.

FIGURE 5-12 GM0025~GM0050 HIGH VISCOSITY LIQUID END-TUBING CONNECTION

Diagram and parts list for GM0025-GM0050 high viscosity liquid ends with tubing connections.

FIGURE 5-13 GM0090~GM0500 SPACER

Diagram showing the spacer for GM0090-GM0500 pumps.

FIGURE 5-14 GM0090~GM0500 PVC, PVDF & MIXED LIQUID END

Diagram and parts list for GM0090-GM0500 liquid ends for PVC, PVDF, and mixed fluids.

FIGURE 5-15 GM0090~GM0500 STAINLESS STEEL & SLURRY LIQUID END

Diagram and parts list for GM0090-GM0500 stainless steel and slurry liquid ends.

FIGURE 5-16 GM0090~GM0500 HIGH VISCOSITY LIQUID END

Diagram and parts list for GM0090-GM0500 high viscosity liquid ends.

FIGURE 5-17 GM DOUBLE DIAPHRAGM LEAKAGE DETECTION WITH PRESSURE GAUGE SECTIONAL VIEW

Sectional view diagram of double diaphragm leakage detection with a pressure gauge.

FIGURE 5-18 GM DOUBLE DIAPHRAGM LEAKAGE DETECTION WITH PRESSURE GAUGE AND SWITCH SECTIONAL VIEW

Sectional view diagram of double diaphragm leakage detection with pressure gauge and switch.

Parts List for Double Diaphragm Assembly

List of common parts for double diaphragm assemblies.