Runxin 63504 User Manual

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Multi-functional Flow Control Valve for

Water Treatment Systems

63504,63504B (Old Model No.: F63C1,F63G1)

63604,63604B (Old Model No.: F63C3,F63G3)

73504,73504B (Old Model No.: F68C1,F68G1)

73604,73604B (Old Model No.: F68C3,F68G3)

User Manual

Please read this manual in details before using the valve

and keep it properly in order to consult in the future.

0WRX.466.501

International Patent Public No.:

WO 2006/007772

China Patent No.: ZL02220153.X,

ZL200420078956.5

US Patent No.: 7549446

India Patent No.: 232582

Russia Patent No.:2349819

South Korea Patent No.:10-0914137

Mexico Patent No.: 268581

Australia Patent No.: 2005263257

Philippine Patent No.: 1-2006-502553

Taiwan Patent No.:M287896

Table of Contents

Questions and Answers:

S
susangarnerSep 7, 2025
Why does water flow out from the drain or brine pipe after regeneration in my Runxin Control Unit?
- J
  Judy WoodSep 7, 2025
  If water flows out from the drain or brine pipe of your Runxin Control Unit after regeneration, it could be due to foreign material in the valve preventing complete closure; clean the foreign material in the valve body. Hard water mixed in the valve body can also be a cause; change the valve core or sealing ring. If the water pressure is too high, causing the valve to not reach the correct position, reduce the water pressure or use the pressure release function. If, under the Backwash position, the outlet line and brine line are connected, install a check valve or solenoid valve in front of the outlet, or install a liquid level controller in the brine tank.
M
maldonadojoshuaSep 9, 2025
Why is there salt water in the softened water from my Runxin Control Unit?
- A
  Ashley MasseySep 9, 2025
  If you notice salt water in the softened water from your Runxin Control Unit, it could be due to foreign material in the injector or injector malfunction; clean and repair the injector. If the brine valve cannot be shut off, repair and clean it. Also, the rapid rinse time might be too short, so extend it.
D
Dustin MartinezSep 12, 2025
Why is the capacity of my Runxin 63504 decreasing?
- C
  Cassie FrySep 12, 2025
  If the capacity of your Runxin Control Unit is decreasing, it could be because the unit fails to regenerate or doesn't regenerate properly; regenerate according to the correct operation requirements. A fouled resin bed can also cause this; increase the backwash flow rate and time, and clean or change the resin. Check if the salt setting is not proper and readjust the brine drawing time. If the softener setting is not proper, recount and reset according to the test of outlet water. Raw water quality deterioration can also lead to decreased capacity; regenerate the unit manually temporarily, then reset the regeneration cycle. Finally, a stuck turbine of the flow meter can be the cause; disassemble the flow meter and clean or replace the turbine.
J
Jennifer KentSep 12, 2025
Why do all indicators display on the front panel of my Runxin 63504?
- D
  danawilsonSep 12, 2025
  If all indicators are displaying on the front panel of your Runxin Control Unit, it could be due to the wiring of the front panel with the controller failing to work; check and replace the wiring. If the control board is faulty, replace it. A damaged transformer can also cause this; check and replace the transformer. Finally, unstable electrical service can be the cause; check and adjust the electrical service.
M
Michael RobertsSep 14, 2025
Why is there no display on the front panel of my Runxin 63504?
- T
  Tina HoweSep 14, 2025
  If there is no display on the front panel of your Runxin Control Unit, it could be due to several reasons. The wiring of the front panel with the controller might fail to work; check and replace the wiring. The front panel itself might be damaged, requiring replacement. The control board could also be damaged, so replace it. Finally, electricity might be interrupted, so check the power supply.

Runxin 63504 Specifications

General

Brand	Runxin
Model	63504
Category	Control Unit
Language	English

Summary

User Manual

Product Overview

Product Characteristics

Product Structure and Technical Parameters

Installation

Provides guidance and steps for the proper installation of the control valve.

Basic Setting & Usage

Basic Setting & Usage

Details the fundamental procedures for setting up and operating the valve.

Parameter specifications

Applications

The Function and Connection of PC Board

Parameter settlement

Parameter Enquiry and Setting

Explains how to view and adjust various operational parameters of the valve.

Trouble-Shooting

Control Valve Fault

Lists common problems with the control valve and their respective solutions.

Trial running

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