CAT Pumps 4DNX Series User Manual

SERVICE MANUAL
4DNX, 4DX, 4SP, 4SPX SERIES PLUNGER PUMPS
SERVICING THE 4DNX, 4DX, 4SP and 4SPX SERIES PLUNGER PUMPS
WARNING
Do not service pump or electrical equipment while energized. Electricity
can cause personal injury, death or property damage.
1. Adhere to “Lock Out” and “Tag Out” procedures for electrical equipment.
2. Before commencing pump service, turn power supply off.
3. Keep water away from electrical outlets and electrical devices.
4. Electrical components must be installed by a qualified electrician to avoid risk of electrocution.
IMPORTANT SAFETY INSTRUCTIONS
It is the responsibility of the user to read and understand all instructions, important safeguards, and safety precautions before operating or servicing
any pump. Failure to do so may result in property damage, personal injury or death.
General Safety Information and Symbols
Pay special attention to the following signal words, safety alert symbols and statements:
indicates a hazardous situation which, if not avoided, will result in death or serious injury.
indicates a hazardous situation which, if not avoided, could result in death or serious injury.
indicates a hazardous situation which, if not avoided, could result in minor or moderate injury or property damage.
indicates a hazardous situation which, if not avoided, could result in property damage.
Indicates a potential personal injury hazard. Obey all safety messages that follow this symbol to avoid possible injury or death.
WARNING
CAUTION
NOTICE
DANGER
PUMP
MODEL
FLOW PRESSURE RPM TEMPERATURE SHAFT DIA. OIL CAPACITY
gpm lpm psi bar Pump ˚F ˚C in mm oz l
4DNX25GSI 2.5 9.5 3000 207 3450 140 60 3/4 19 8.5 0.25
4DNX27GSI 2.7 10.2 3000 207 3450 140 60 3/4 19 8.5 0.25
4DX03ELR 0.3 1.14 2000 138 1750 140 60 5/8 15.8 8.5 0.25
4DX10ER 1.0 3.8 2000 138 3450 140 60 5/8 15.8 8.5 0.25
4DX15ER 1.5 5.7 2000 138 3450 140 60 5/8 15.8 8.5 0.25
4DX20ER 2.0 7. 6 2000 138 3450 140 60 5/8 15.8 8.5 0.25
4DX27ER 2.7 10.2 2000 138 3450 140 60 5/8 15.8 8.5 0.25
4DX30ER 3.0 11. 4 2000 138 3450 140 60 5/8 15.8 8.5 0.25
4DX29GUIF 2.9 11.0 2600 179 3450 140 60 3/4 19 8.5 0.25
4SP21ELR 2.1 7.9 2000 138 1750 140 60 5/8 15.8 10.1 0.30
4SP29ELR 2.85 10.8 1200 83 1725 140 60 5/8 15.8 10.1 0.30
4SPX32G1I 3.2 12.1 3000 207 3450 140 60 1 25.4 10.1 0.30

CAT Pumps 4DNX Series Specifications

General

Brand	CAT Pumps
Model	4DNX Series
Category	Water Pump
Language	English

Summary

Safety Instructions Overview

Plunger Pump Servicing Overview

Servicing Safety Precautions

Warning regarding servicing pump or electrical equipment while energized.

Preventive Maintenance Schedule

Maintenance Checklist

Daily, weekly, and hourly maintenance checks for filters, oil, seals, and valves.

General Safety Information

Safety Symbols and Hazard Explanations

Detailed explanations of DANGER, WARNING, and CAUTION symbols and associated hazards.

Specific Hazard Warnings

Pressure, Oxygen, Fall Hazards

Details on over-pressurization, oxygen usage, and fall prevention during operation.

Fittings, Frozen Liquid Hazards

Warnings about using incorrect fittings, cleaning solvents, and operating with frozen liquid.

Troubleshooting and Maintenance

Problem Diagnosis and Solutions

Common pump problems, probable causes, and recommended solutions for various issues.