OEG CPA-E 55/25 User Manual

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OEG CPA-E und CPA-E S PWM Serie

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Table of Contents

Questions and Answers:

J
Javier BrownAug 9, 2025
What to do if my OEG CPA-E 55/25 Water Pump cannot be switched on?
- E
  Eugene MeyerAug 9, 2025
  If your OEG Water Pump cannot be switched on, several factors could be at play. It might be due to a blown fuse, in which case you should replace the fuse. Alternatively, the circuit breaker might not be connected; ensure it is properly connected. Motor failure could also be the culprit, suggesting the need to replace the pump. Check the power supply to rule out undervoltage. Lastly, pump stalling could be the issue, indicating that the pump needs cleaning.
W
wilsonjohnAug 19, 2025
Why is my OEG Water Pump making so much noise?
- K
  Kenneth WalkerAug 20, 2025
  If your OEG Water Pump is generating excessive noise, it could be due to air in the system. Bleeding the system should resolve this. Another possible cause is a flow rate that's too high. Increasing the inlet pressure can address this issue.
B
Brian BlackAug 29, 2025
How to fix noises generated by OEG Water Pump?
- K
  Katherine RamirezAug 29, 2025
  If your OEG Water Pump is generating noises, it may be due to air inside the pump. Try bleeding the system to remove the air. Alternatively, the inlet pressure may be too low. Increasing the inlet pressure should help resolve this.

OEG CPA-E 55/25 Specifications

General

Brand	OEG
Model	CPA-E 55/25
Category	Water Pump
Language	English

Summary

Pictograms and Safety Notes

General Safety Warnings and Notes

Covers warnings, cautions, and notes for safe installation and operation of the pump.

Operating Instructions

Installation Guidelines

General Installation Requirements

Guidance on pump orientation, flow direction, and use of supplied accessories.

Rotating the Terminal Box

Step-by-step instructions for rotating the pump's terminal box by 90 degrees for optimal placement.

Safety Precautions During Installation

Crucial safety warning regarding hot, pressurized medium and the necessity of pressure release.

Electrical Installation

Electrical Connection Diagrams

Illustrations detailing the process of electrical connection for the pump, showing wiring steps.

Electrical Installation Safety

Warning on complying with local regulations and using qualified installers for safe electrical connections.

Control Panel Overview

Error Codes and Power Indication

Explains how the display shows energy consumption and lists common error codes for troubleshooting.

Operating Modes Explanation

Details the 7 operating modes and PWM control, including their display indicators and descriptions.

Night Mode Functionality

Night Mode Operation

Night Mode Preconditions

Lists requirements and provides diagrams for proper night mode functionality and system preparation.

Night Mode Restrictions and Tips

Details restrictions, power failure behavior, and troubleshooting tips for night mode usage.

Night Mode Automatic Function

PWM Control Features

PWM Signal Control

Commissioning Procedures

Pre-Commissioning Checks

Pump Self-Bleeding

Heating System Bleeding

Operating Modes and Performance

Mode vs. Performance Curves

Detailed Operating Mode Descriptions

Technical Data

Rated Technical Specifications

Troubleshooting Guide

Common Failures and Solutions

Table detailing common issues, control panel indications, causes, and recommended remedies.

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