Table of Contents
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Quick Start Guide
WP120 Electric Water Pump
This manual is effective for consumer installations
of EMP WP120 water pumps. OEM installers must
contact EMP for production requirements.
Rev
Rev By
Date
Description of Change
Approved By
A
ME
5/17/21
New Release
ECN6212
9970137016 Rev. A – 05/17/2021
© 2021 EMP Inc.
1
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Table of Contents
Related Manuals for EMP WP120 24V
Summarization of Contents
Introduction
Purpose
Presents information related to the pump's dimensions, electrical specifications, coolant guidelines, plumbing, orientation, and maintenance.
Service Technician Responsibilities
Ensures all safety and information messages are read and understood before performing service.
Liability Disclaimer
States EMP cannot anticipate all potential hazards and users must ensure their methods are safe.
Additional Information
Provides access to service software, bulletins, manuals, and drawings via the EMP website.
Technical Help
Contact EMP Customer Service for technical assistance via phone or email.
Warnings, Cautions and Notes
Explains the styling of WARNING, CAUTION, and NOTE headings for safety and information.
Definition of Terms
Defines technical terms like CAN, EMPower Connect, Ignition Enable, and RPM.
Specifications
Performance Specifications
Details maximum/minimum operating temperatures and motor speeds for the pump.
Mechanical Specifications
Covers component construction material and weight.
Electrical Specifications
Lists input voltage, operating current draw, and thermal protection.
Dimensions and Hole Locations
Provides diagrams with physical dimensions and mounting hole spacing.
Material Listing
Lists major external and fluid contacting parts with their materials.
Operating Limits
Details temperature limitations for operation and storage.
Identification
Model Codes
Explains the structure and meaning of EMP water pump model codes.
Installation
Environment
Emphasizes environment cleanliness for pump life and submersible capability.
Orientation
Details the standard orientation and pump specific installation requirements.
Plumbing
Specifies hose diameter for pump inlet and potential issues with trapped air.
Hose Clamps
Recommends SAE20CT worm drive hose clamps and specifies torque.
System Fill Procedure
Provides step-by-step instructions for filling the system and purging air.
Approved Fluids
Lists recommended fluid types and precautions for coolants and additives.
Wiring
Recommended Wiring Practices
Outlines best practices for routing and securing electrical harnesses.
Electrical Connections
Describes power input and ignition enable connections.
10-way Component Connector
Details the pinout and wire colors for the male 10-way connector.
10-way Mating Connector
Provides part numbers and notes for the female 10-way mating connector.
10-way On/Off Single Speed Control
Details the pinout and purpose for the 10-way single speed control connector.
Pump Operation
Describes how the component operates in on/off single speed mode and 'Power Hold' option.
7-way Component Connector
Details the pinout and wire colors for the male 7-way connector.
7-way Mating Connector
Provides part numbers and notes for the female 7-way mating connector.
7-way Connector Greasing
Specifies applying dielectric grease to electrical connectors for protection.
7-way On/Off Single Speed Control
Details the pinout and purpose for the 7-way single speed control connector.
Routine Maintenance
Maintenance Schedule
Outlines checks for fluid levels, coolant quality, and wiring integrity.
Physical Inspection
Instructs to check the weep hole for clogs and ensure electrical connections are tight.
EMPower Connect Service Tool
Diagnostic Outputs (WP120)
Details gathering operational and diagnostic info via CAN using EMPower Connect.
Diagnostic Outputs (WP120L)
Details viewing performance via PWM using EMP-Link communication protocol.
Troubleshooting
Pump Not Running
Checks for electrical connections, ignition enable status, and wiring.
Pump Running But Not Pumping
Checks system fluid level, tubing restrictions, priming, and inlet hose.
No CAN Communication
Verifies communication harness, CAN message formats, and component address.
Suspected Water Pump Seal Leak
References service bulletin for inspection and diagnostic procedures.
Pump Producing Excessive Noise
Checks for cavitation, low inlet pressure, trapped debris, or plumbing issues.
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