Graham 1 Series User Manual

33 pages

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IOM-LRP1,2_0402

Liquid Ring Pump

Series 1 and 2 Design

INSTALLATION, OPERATION & MAINTENANCE MANUAL

Graham Corporation

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20 Florence Avenue

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Batavia, New York 14020

Email: equipment@graham-mfg.com

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www.graham.mfg.com

Phone: 585-343-2216

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Fax: 585-343-1097

Questions and Answers:

J
Jason BurnsAug 13, 2025
Why does my Graham 1 Series have high power consumption?
- R
  Rodney FloresAug 13, 2025
  High power consumption in your Graham Water Pump can stem from several issues. It could be due to excessive service liquid, requiring a reduction in flow rate. Misalignment of the shaft is another potential cause, so realigning the shafts might be necessary. Also, check for excessive back pressure and eliminate its cause. Other factors include a defective bearing (replace it), a gland follower that's too tight (loosen it), an improperly mounted pump (ensure the surface is level), or a high-temperature process load (check conditions upstream of the pump).
J
Jeffrey JonesAug 17, 2025
Why is my Graham 1 Series Water Pump making excessive noise?
- J
  James ChavezAug 17, 2025
  Excessive noise in your Graham Water Pump can be attributed to several factors. The service liquid might be either too much or too little; in that case, adjust the flow rate. Shaft misalignment is another potential cause, requiring realignment of the shafts. Defective bearings can also generate noise, so consider replacing them. Cavitation might be occurring, which can be resolved by opening the attenuation valve or adjusting the vacuum. Finally, back pressure could be the culprit, so eliminate the cause of the back pressure.

Graham 1 Series Specifications

General

Type	Centrifugal Pump
Model	1 Series
Category	Water Pump
Power Source	Electric
Outlet Size	1 - 1.5 inches
Voltage	115/230V
Phase	Single
Material	Stainless Steel

Summary

Section 1 - General Information

1.1 Introduction

Provides assistance for installation, operation, and maintenance of Graham Liquid Ring Pumps.

Section 1 - General Information

1.2 General Description and Principle of Operation

Explains the liquid ring pump mechanism and its functions, including heat absorption and contaminant washing.

Section 1 - General Information

1.3 Description of Pump Model Codes

Details how pump model codes describe construction, size, seal type, and special features.

Section 2 - Installation Instructions

2.1 Handling

Instructions for unpacking and lifting pumps and pump-motor assemblies safely.

2.2 Preservation

Information on protective solutions applied to pumps before shipping and disposal requirements.

2.3 Mounting

Guidelines for setting, leveling, and securing the pump package or baseplate.

2.4 Installation

Advice on supporting piping, checking joints, and using temporary strainers.

Section 2 - Installation Instructions

2.5 Coupling Alignment

Procedures and tolerances for aligning pump and motor shafts for optimal operation.

Section 2 - Installation Instructions

2.6 Belt Drives

Safety caution regarding the operation of pumps with belt drives.

2.7 Service Liquid Piping Arrangements

Describes two basic piping arrangements (once-through and recirculation) for service liquid.

Section 2 - Installation Instructions

A) Typical Installation of Once Through with No Recovery

Illustrates a basic system for service liquid supply and drainage without recirculation.

Section 2 - Installation Instructions

B) Typical Installation of Closed Loop with Total Recovery

Explains a system for total recirculation of service liquid with heat exchange.

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 1 Design

Details coolant piping for Series 1 pumps with packed gland shaft sealing.

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 2 Design

Describes coolant piping for Series 2 pumps using mechanical shaft seals.

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 2 Design Continued

Details optional coolant piping for Size 40000-80000 and Size 90000 pumps.

Section 2 - Installation Instructions

2.9 Piping Requirements - Suction and Discharge

Guidelines for suction and discharge piping size, support, and cleanliness.

2.9 Piping Requirements - Service Liquid

Recommendations for service liquid piping sizes based on system configuration.

2.10 Electrical Requirements

Emphasizes compliance with safety codes and checking motor rotation.

Section 3 - Operating Instructions

3.1 Start-up Procedures

Step-by-step instructions for safely starting the liquid ring pump.

3.2 Pump Packing Adjustment

Procedure for adjusting gland packing on Series 1 pumps for proper sealing and cooling.

Section 3 - Operating Instructions

3.3 Service Liquid Requirements - Flow Rates

Table showing typical service liquid flow rates for various pump models.

3.3 Service Liquid Requirements - Flow Control

Methods for approximating service liquid flow using regulating valves and gauges.

Section 3 - Operating Instructions

3.3 Service Liquid Requirements - Hard Water

Discusses issues with hard water as service liquid and suggests treatment.

3.4 Cavitation

Explains the causes, effects, and prevention methods for pump cavitation.

3.5 Shut-Down Procedures

Steps for safely shutting down the pump and preparing for maintenance or freezing.

Section 4 - Accessory Items

4.1 Accessories

Lists common accessory items for liquid ring pumps and their functions.

Section 4 - Accessory Items

4.1 Accessories (continued)

Describes additional accessories like Heat Exchangers and Atmospheric Air Ejectors.

Section 5 - Maintenance

5.1 Performance

Emphasizes the importance of maintenance for optimal performance and service life.

5.2 Series 1 and 2 Pump Estimated Weights (lbs.)*

Tables detailing estimated weights for various pump models in different materials.

Section 5 - Maintenance

5.3 Shaft Bearings

Information on bearing types, lubrication, temperature limits, and potential issues.

5.4 Gland Packings

Instructions for replacing and adjusting gland packings on Series 1 pumps.

Section 5 - Maintenance

5.5 Mechanical Seals

Details Series 2 mechanical seals and their replacement, plus Series 1 applications.

5.6 Storage

Procedures for protecting pumps during extended periods of non-operation.

Section 5 - Maintenance

5.7 Removal from storage

Steps for preparing a stored pump for operation, including draining and flushing.

Section 5 - Maintenance

5.8 Troubleshooting Chart

A chart listing common problems, their causes, and recommended solutions.

Section 6 - Disassembly And Reassembly Procedures

6.1 General

Overview of pump disassembly for repair and parts stocking recommendations.

6.2 Impeller End Clearances

Table of critical impeller end clearances for different pump sizes and constructions.

Section 6 - Disassembly And Reassembly Procedures

A) Gasketed Pumps

Details gasket locations and thicknesses for Series 1 and 2 pumps to set clearances.

Section 6 - Disassembly And Reassembly Procedures

B) Non-Gasketed Pumps

Explains assembly for cast iron pumps without gaskets, using sealing compounds.

6.3 Tie Rod Torque Values

Table listing torque values for re-assembling pump tie rods.

6.4 Bearing Data

Provides SKF bearing numbers, types, fit classes, and tolerances for pump frames.

Section 7 - Warranty

Warranty Terms and Exclusions

Outlines Graham Corporation's warranty terms and exclusions for their pumps.

Appendix A- MATERIAL SAFETY DATA SHEET

SECTION I PRODUCT IDENTIFICATION

Identifies Oakite HPO product, manufacturer, and emergency contact information.

SECTION II HAZARDOUS INGREDIENTS

Lists hazardous ingredients, their concentrations, and relevant exposure limits.

Appendix A- MATERIAL SAFETY DATA SHEET

SECTION III PHYSICAL DATA

Details physical properties of Oakite HPO, including boiling point and specific gravity.

SECTION IV FIRE AND EXPLOSION HAZARD DATA

Information on flash point, extinguishing media, and fire fighting procedures.

SECTION V HEALTH HAZARD INFORMATION

Describes symptoms of overexposure and first aid measures for Oakite HPO.

Appendix A- MATERIAL SAFETY DATA SHEET

SECTION VI REACTIVITY DATA

Information on stability, incompatible materials, and hazardous decomposition products.

SECTION VII SPILL OR LEAK PROCEDURES

Guidelines for handling spills, including personal protection and waste disposal.

SECTION VIII SPECIAL PROTECTION INFORMATION

Recommendations for respiratory, eye, and skin protection when handling the product.

Graham 1 Series User Manual

Table of Contents

Questions and Answers:

Graham 1 Series Specifications

Summary

Section 1 - General Information

1.1 Introduction

Section 1 - General Information

1.2 General Description and Principle of Operation

Section 1 - General Information

1.3 Description of Pump Model Codes

Section 2 - Installation Instructions

2.1 Handling

2.2 Preservation

2.3 Mounting

2.4 Installation

Section 2 - Installation Instructions

2.5 Coupling Alignment

Section 2 - Installation Instructions

2.6 Belt Drives

2.7 Service Liquid Piping Arrangements

Section 2 - Installation Instructions

A) Typical Installation of Once Through with No Recovery

Section 2 - Installation Instructions

B) Typical Installation of Closed Loop with Total Recovery

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 1 Design

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 2 Design

Section 2 - Installation Instructions

2.8 Shaft Seal Coolant Piping Arrangement - Series 2 Design Continued

Section 2 - Installation Instructions

2.9 Piping Requirements - Suction and Discharge

2.9 Piping Requirements - Service Liquid

2.10 Electrical Requirements

Section 3 - Operating Instructions

3.1 Start-up Procedures

3.2 Pump Packing Adjustment

Section 3 - Operating Instructions

3.3 Service Liquid Requirements - Flow Rates

3.3 Service Liquid Requirements - Flow Control

Section 3 - Operating Instructions

3.3 Service Liquid Requirements - Hard Water

3.4 Cavitation

3.5 Shut-Down Procedures

Section 4 - Accessory Items

4.1 Accessories

Section 4 - Accessory Items

4.1 Accessories (continued)

Section 5 - Maintenance

5.1 Performance

5.2 Series 1 and 2 Pump Estimated Weights (lbs.)*

Section 5 - Maintenance

5.3 Shaft Bearings

5.4 Gland Packings

Section 5 - Maintenance

5.5 Mechanical Seals

5.6 Storage

Section 5 - Maintenance

5.7 Removal from storage

Section 5 - Maintenance

5.8 Troubleshooting Chart

Section 6 - Disassembly And Reassembly Procedures

6.1 General

6.2 Impeller End Clearances

Section 6 - Disassembly And Reassembly Procedures

A) Gasketed Pumps

Section 6 - Disassembly And Reassembly Procedures

B) Non-Gasketed Pumps

6.3 Tie Rod Torque Values

6.4 Bearing Data

Section 7 - Warranty

Warranty Terms and Exclusions

Appendix A- MATERIAL SAFETY DATA SHEET

SECTION I PRODUCT IDENTIFICATION

SECTION II HAZARDOUS INGREDIENTS

Appendix A- MATERIAL SAFETY DATA SHEET

SECTION III PHYSICAL DATA

SECTION IV FIRE AND EXPLOSION HAZARD DATA

SECTION V HEALTH HAZARD INFORMATION