dosatron D 20 S User Manual (English)

Questions and Answers:

U
uhuffAug 3, 2025
Why is water flowing back into the concentrate container of my Dosatron Water Pump?
- F
  Frederick LoweAug 3, 2025
  Water flowing back into the concentrate container of your Dosatron Water Pump can be caused by several issues. It could be due to contaminated, worn, or missing check valve parts, which you should clean or replace. Another cause might be that the piston motor has stopped; refer to the Motor piston section for troubleshooting. Also, check the suction height and reduce it if it exceeds 4 meters. Finally, inspect the suction tube for air leaks, ensuring the nut and suction hose are tightly connected.
C
Charles WilliamsAug 7, 2025
What to do if the motor piston of my Dosatron Water Pump does not start or stops injecting?
- C
  Carlos PhillipsAug 7, 2025
  If the motor piston of your Dosatron Water Pump isn't starting or stops injecting, there are a few potential causes. First, ensure the unit has been properly bled, referring to the 'Putting into Order' section. Check that the bypass is fully open, consulting the 'Incorporated bypass' section. If the maximum flow is exceeded, reduce the flow and restart the unit. If none of these steps resolve the issue, there may be damage inside the unit.
V
vbarajasAug 12, 2025
How to fix injection leaks in Dosatron Water Pump?
- M
  Michelle DuranAug 12, 2025
  Injection leaks in your Dosatron Water Pump can stem from several causes. Start by checking for air suction, ensuring all nuts on the dosing parts are correctly tightened and inspecting the condition of the suction hose. Make sure the suction hose is properly bled to eliminate any air inside. If the flow exceeds the maximum, reduce it to prevent cavitation. Lastly, worn components like the plunger seal or injection stem may be the culprit, requiring replacement.
D
Daniel MartinAug 17, 2025
Why is water flowing back into the concentrate container in my dosatron D 20 S?
- E
  Elizabeth MunozAug 17, 2025
  Water flowing back into the concentrate container in your Dosatron Farm Equipment can be caused by contaminated, worn, or missing check valve parts. In this case, you should clean or replace them. Also, check the tightness between the nut and suction hose, and reduce the suction height if needed.

dosatron D 20 S Specifications

General

Model	D20S
Injection Percentage	0.5 – 5%
Operating Pressure	0.2 - 6 bar
Maximum Pressure	6 bar
Temperature Range	0 - 40°C
Connection Size	3/4"
Inlet/Outlet connections	3/4" NPT
Material	Plastic

Summary

Quick Start-Up Guide

Initial Setup

Visual steps for initial assembly and connection of the Dosatron unit.

Operation Check

Demonstrates checking the unit's operation and flow direction.

On/Off and Adjustment

Illustrates switching the unit on/off and adjusting the injection rate.

Priming and Flow

Shows the unit being primed and placed in a water source.

Introduction and Important Notes

Important Information

Instructions to record model and serial numbers for future reference and service.

Technical Specifications

How the Dosatron Works

Installation Guide

Precautions and General Remarks

Covers essential safety and connection guidelines for installation.

Water Quality and Flow Considerations

Discusses filters for particle content and handling water hammer/excessive flow.

Installation Location and Maintenance

Advises on proper placement and routine maintenance requirements.

Assembling the Dosatron

Leg Attachment

Detailed steps for inserting and fixing the support legs onto the Dosatron unit.

Initial Component Preparation

Instructions for removing nuts, ferrules, and caps from inlet/outlet ports before connection.

Vacuum Breaker Assembly

Steps to assemble and attach the vacuum breaker device to the Dosatron unit.

Pipe Connection Methods

Details connecting to polyethylene, polypropylene, and PVC pipes using nuts and ferrules.

Suction Tube and Strainer Setup

Correctly positioning the suction tube strainer in the concentrate container and avoiding the bottom.

Earthing Recommendation

Installation Hints and Recommendations

Connection Options

Discusses direct connection versus bypass installation and their benefits.

Filter Recommendation

Explains the importance of using a filter for unit longevity and warranty validity.

Flow Rate Warning

Advises on identifying and managing excessive flow rates to prevent unit damage.

Putting the Dosatron into Operation

First-Time Use and Priming

Steps for initial operation, self-priming, and drawing up the concentrate product.

Hydraulic By-Pass Operation

Explains how to use the by-pass button for dosing, draining, or stopping the unit.

Anti-Siphoning Device

Maintenance Recommendations

Periodic Dismantling and Rinsing

Advises on dismantling, rinsing, and lubricating parts for soluble products.

Operation Checks

Recommends checking for air inlets or seal failures that might interrupt dosing.

Post-Non-Use Preparation

Suggests soaking the motor piston in water after periods of inactivity.

Draining for Freezing Temperatures

Provides steps to drain the unit to prevent damage from freezing conditions.

Suction Tube Fitting

Instructions for fitting the suction tube correctly, referencing precautions.

Adjusting Injection Rate

Step-by-step guide on setting the correct injection ratio when the unit is not under pressure.

Changing Injection Seals

Detailed method for removing and refitting seals in the injection assembly.

Suction Valve Seal Maintenance

Instructions for cleaning and re-assembling the suction valve seal and o-ring.

Reference Designation

Troubleshooting Guide

Motor Piston Problems

Addresses issues like the unit not starting or stopping, and their potential causes and solutions.

dosatron D 20 S User Manual

Table of Contents