WilTec SUNSUN HW-402B User Manual

Operation Manual
External Aquarium Filter
HW-302–304, 402B–404B, 403A, 404A
50192–50197, 50358, 50359
Illustration similar, may vary depending on model
Read and follow the operating instructions and safety information before using for the first time.
Technical changes reserved!
Due to further developments, illustrations, functioning steps and technical data can differ insignific -
antly.
Updating the documentation
If you have suggestions for improvement or have found any irregularities, please contact us.

WilTec SUNSUN HW-402B Specifications

General

Brand	WilTec
Model	SUNSUN HW-402B
Category	Water Filtration Systems
Language	English

Summary

Operation Manual

Disclaimer and Contact Information

Customer Support and Returns

Provides essential contact details for customer support, inquiries, and the returns process.

Introduction and Safety

Important Safeguards

Crucial safety precautions and guidelines for operating the aquarium filter safely and correctly.

Filter Setup and Usage

Filter Assembly and Hose Connections

Steps for separating the filter head, accessing trays, and connecting hoses and taps.

Priming and UV Operation

Procedure for priming the filter, operating the UV switch, and understanding the protect switch.

UV Light Tube Replacement

Detailed instructions for replacing the UV light tube in applicable filter models.

Technical Data

Troubleshooting Guide

Filter Not Operating and Motor Issues

Addresses problems like the primer button not working and motor operation failures.

Water Flow and Noise Issues

Solutions for inhibited water flow and abnormal sounds during filter operation.

Air Evacuation and Noise Reduction

Methods for reducing noise, eliminating external air, and evacuating air from the filter system.

Leakage Diagnosis and Repair

Guidance on identifying and resolving leakage issues, particularly related to O-rings.

Filter Media Basics

Disposal Regulations