Johnson Pumps AQUA JET WPS 3.5 User Manual

1
Instruction Manual
AQUA JET
Water Pressure Systems
WPS 2.9 12/24 V DC
WPS 3.5 12/24 V DC
WPS 4.0 12/24 V DC
WPS 5.2 12/24 V DC
IB-215 R01

Johnson Pumps AQUA JET WPS 3.5 Specifications

General

Model	AQUA JET WPS 3.5
Pressure (bar)	4.5 bar
Weight (kg)	12 kg
Voltage	12V
Port Size	1/2 inch

Summary

Water Pressure Systems Overview

Key Features

Working Principle

Explains automatic on/off operation based on pressure changes.

Technical Specifications

Covers materials, connections, temperature limits, and motor specs.

Performance Data

WPS 2.9 Performance

WPS 3.5 Performance

WPS 4.0 Performance

WPS 5.2 Performance

Installation Guide

Pump Location and Mounting

Electrical Installation

Details electrical standards and safety for pump installation.

Maintenance and Wiring

Wiring Recommendations

External Electrical Connections

Operation and Safety

Start-Up Procedure

Service and Warnings

Fluid Compatibility Warning

Crucial warning about using only fresh-water and sea-water.

Pressure Switch Replacement

Detailed steps for replacing the pressure switch on specific models.

Troubleshooting

Pump Fails to Start or Prime

Diagnosing and resolving issues when the pump fails to start or prime.

Pump Cycling Issues

Addressing rapid on/off cycling when water is used or not.

Pump Runs Continuously

Resolving issues where the pump fails to stop running.

Low Flow, Pressure, or Noise