dosatron D25+ Series User manual

D25ALN
Manuel d’utilisation
Owner’s manual
Gebrauchsanweisung
Manuale d’uso
Manual de utilización
Gebruiksaanwijzing
Pуководство пользователя
Instrukcja obsługi
Manual de utilização
DOSATRON INTERNATIONAL S.A.S.
Rue Pascal - B.P. 6 - 33370 TRESSES (BORDEAUX) - FRANCE
Tel. [phone]
Fax. [phone] (0)5 57 97 10 85
[email protected] - www.dosatron.com
© DOSATRON INTERNATIONAL S.A.S 2017
FABRIQUÉ PAR
MANUFACTURED BY
HERGESTELLT VON
FABBRICATO DA
FABRICADO POR
GEPRODUCEERD DOOR
ИЗГОТОВЛЕНО
PRODUKCJA
FABRICADO POR
NTD25ALN-07-18

Français..................... Page 5
English..................... Page 37
Deutsch ................... Seite 69
Italiano................ Pagina 101
Español............... Página 133
Nederlands......... Pagina 165
РУССКИЙ ................ СТР 197
Polski.................. Strona 229
Português........... Página 261
Annexes/Enclosure/Anhang/Anejos/Allegati
Bijvoegsel/Приложения/ Załączniki/ Anexos . 293
FR
ENDE
IT
ES
NL
RU
PLPT

© DOSATRON INTERNATIONAL S.A.S / 5© DOSATRON INTERNATIONAL S.A.S / 6
EN
You have purchased a Dosatron “D25+” water-powered proportional dosing
pump. This is part of the “Animal Health Line” range and is intended for use
in the farming environment.
The creation and manufacture of this Dosatron dosing pump has received
special attention. It is protected by 2 new systems for locking and
connecting the patented dosing section.
In addition, it complies with food contact requirements EC No. 1935/2004
and EC No. 2023/2006.
Your Dosatron dosing pump is also SD Ready, which allows you to
incorporate the SmartDosing system (Optional system for protecting,
monitoring and recording all the treatments administered dosing pumpvia
your Dosatron dosing pump).
This dosing pump product, just like all Dosatron dosing pumps, has
undergone post-manufacturing testing. Please read this user’s manual
carefully to ensure correct operation from the start.
THEREFORE, PLEASE, READ THIS MANUAL CAREFULLY
BEFORE PUTTING THE APPLIANCE INTO SERVICE
Important!
The complete reference and serial number of your DOSATRON
is shown on the pump body. Please record these numbers in the
space below and refer to them when contacting your retailer or
asking for information.
In addition, it complies with food contact requirements
EC No. 1935/2004 and EC No. 2023/2006.</599>
Ref.: ...................................................................................................
Serial No.: ..........................................................................................
Purchase Date: .................................................................................
This document does not form a contractual obligation on the part of
DOSATRON INTERNATIONAL and is for information only. DOSATRON
INTERNATIONAL reserves the right to alter its appliances at any time.
© DOSATRON INTERNATIONAL S.A.S 2017
English
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NOTES

© DOSATRON INTERNATIONAL S.A.S / 7© DOSATRON INTERNATIONAL S.A.S / 8
EN
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NOTES
MARKING/IDENTIFICATION/CHARACTERISTICS
Codification of the reference .................................................. 10
Characteristics ........................................................................11
Dimensions .............................................................................11
INSTALLATION
Precautions ............................................................................. 14
Installation of the Dosatron..................................................... 17
Installation tips ........................................................................ 22
PUTTING INTO SERVICE
Using for the first time............................................................. 23
Use.......................................................................................... 23
Adjusting the dosing rate ........................................................ 24
Dosing principle ...................................................................... 24
MAINTENANCE
Recommendations .................................................................. 25
Removing the suction hose .................................................... 26
Removing/Refitting the dosing part ........................................ 27
Draining the Dosatron............................................................. 27
Changing seals in the dosing part .......................................... 28
Removing/Refitting the dosing piston ..................................... 30
Cleaning and refitting the suction valve.................................. 31
Changing the motor pistons.................................................... 31
TROUBLESHOOTING.............................................................. 32
LIMITED WARRANTY .............................................................. 34
Contents

© DOSATRON INTERNATIONAL S.A.S / 9© DOSATRON INTERNATIONAL S.A.S / 10
EN
Marking/Identification
Characteristics
Your dosing pump has 2 main marking areas enabling it to be identified in
detail:
A 2-line engraving on the section of the pump body (see picture below),
containing the exact reference of the appliance and the serial number.
A technical label on each side of the pump body indicating the technical
performances of the appliance.
The Animal Health Line dosing pumps with a reference containing the index
“N” after the dosing indication are compliant with the regulation:
- EC No. 1935/2004 concerning materials and articles in contact with food;
- EC No. 2023/2006 concerning good manufacturing practices for materials
and articles in contact with food.
REF.
Serial No.:
'$/19)

'$/19)

REF.:................................................. Serial #: .........................................
Example D25 AL 5 N VF
Dosatron Range
Product line
AL: Animal Health Line
Dosing (% or ratio)
Certication
N: Food contact standards
Dosing Seals
VF: Acidic liquids (pH 0-9)
CODIFICATION OF THE REFERENCE

© DOSATRON INTERNATIONAL S.A.S / 11 © DOSATRON INTERNATIONAL S.A.S / 12
EN
CHARACTERISTICS
D25AL5N
Operating flow: 10 l/h min. 2.5 m3/h max. [1/3
US Pint/min - 11 US GPM] .
Max. operating temperature: ......................................................40°C [104° F]
Operating pressure:
bars
PSI
0.30 - 6
4.3 - 85
Adjustable dosing:
%
Ratio
1 - 5
1:100 - 1:20
Concentrated product injection flow:
Min. l/h - Max. l/h
US Fl. oz/min - Mini
US GPM - Maxi
0.1 - 125
0.056
0.55
Connections (NPT/BSP male gas fittings) : .......................Ø 20x27 mm [3/4”]
Hydraulic motor capacity (every two clicks of the piston):
approx. 0.45 l [0.118 US Gallons]
IMPORTANT! The DOSATRON is not pre-set,
please refer to the chapter, ADJUSTING THE DOSING
DIMENSIONS
Diameter: cm ["] 12.7 [5]
Total height: cm ["] 44 [17” 5/16]
Overall width: cm ["] 16 [6” 5/16]
Weight: ± kg [lbs] +/- 2 Kg [4.4 US Ibs]
PARCEL COMPOSITION: 1 DOSATRON/1 mounting bracket for
DOSATRON/1 suction hose for concentrate/1 strainer/
1 quick start guide
D25+ PACKAGING:
520 mm x 170 mm x 180 mm (20.5” x 6.7” x 7.1”)
WEIGHT: approx. 2 kg for the 5% [~4.4 US lbs]
Dosatron Technology
Motor piston
Clear water Solution
water + % product
Dosing piston
Adjustment dosing (%)
ratio
Concentrate
additive
to be dosed
A unique technology associating all dosing functions
Installed on the water supply line, the Dosatron uses water pressure
as the only power source. Thus activated, it takes up the required
percentage dose of concentrate and then mixes it with the moving
water. The solution produced is then propelled downstream. The
dose of injected product is always proportional to the volume of
water going through the Dosatron, regardless of variations in flow or
pressure in the water supply line (high variations in flow and pressure
driops as result of animal behaviour during drinking).

© DOSATRON INTERNATIONAL S.A.S / 13 © DOSATRON INTERNATIONAL S.A.S / 14
EN
Installation
PRECAUTIONS
1-GENERAL REMARKS
- When connecting a DOSATRON
either to the public water supply
line or to its own water source,
you must respect the standards
concerning protection and
disconnection. DOSATRON
recommends a disconnector to
prevent contamination of the water
supply.
- When connecting the DOSATRON
to the water supply line, ensure
that the water flows in the direction
of the arrows shown on your
appliance.
- In a case where upstream or
downstream water circuits are
higher than the Dosatron, there
is a possible risk of water and
concentrate flowing backwards.
Installing a non-return valve
downstream from the appliance is
therefore recommended.
- Placing an anti-siphoning valve
downstream of the dosing pump is
recommended in installations where
there is a risk of siphoning.
- Do not install the DOSATRON
above a container of acid or
aggressive product. Move the can
away and protect it from possible
chemical fumes with a cover.
- Store the DOSATRON away from
excessive heat sources and in
winter away from frost.
- Do not install the DOSATRON
on the suction circuit of a water
pump (risk of siphoning >
consult Dosatron for this type of
installation).
- It is the responsibility of the user
to replace the dosing part seals
annually to ensure accurate dosing.
- The adjustment of the Dosatron’s
dosing is the sole responsibility
of the user. The user must strictly
adhere to the recommendations
from the manufacturer of the
concentrated additives.
WARNING
When installing, operating,
and maintaining the DOSATRON
water-powered dosing pump,
as a priority observe the safety
instructions. Use suitable tools,
protective clothing, and safety
glasses when working on the
equipment and install it with
a view toward ensuring safe
operation.
Follow the instructions in this
manual BEFORE USING FOR
THE FIRST TIME OR AFTER
A PERIOD OF NON-USE. Let
the DOSATRON operate for 30
CYCLES (motor + dosing part)
with clear water. Do not drink the
aforesaid water. Take additional
safety measures appropriate to
the liquid being pumped and the
temperature of the water that
powers the DOSATRON.
- Be extremely careful in the
presence of hazardous substances
(corrosives, toxic substances,
solvents, acids, caustics,
flammable substances, etc.).

Bleed
Top cap
Mounting bracket
Motor
piston
MOTOR SECTIONDOSING PART
Pump body
Dosing
piston
Deflector ring Dosing
adjustment
sleeve
Suction hose
+ strainer
+ ballast
Suction valve
Suction
valve nut
Suction
hose nut
Eyelet
Dosing
piston
Dosing
pump body Dosing body
Quick
coupling ring
(patented system)
Dosing locker
(patented system)
Prop nut

© DOSATRON INTERNATIONAL S.A.S / 15 © DOSATRON INTERNATIONAL S.A.S / 16
EN
- For dosing these substances,
please consult your distributor
before use to confirm
compatibility with the dosing
pump.
IMPORTANT! The personnel in
charge of the installation, use and
maintenance of this equipment
must have perfect knowledge of
the content of this manual.
- Ensure that the water flow and
pressure of the installation are
compliant with the DOSATRON
characteristics.
- Adjustment of the dosing must be
made unpressurised.
-Turn off the water supply and allow
the pressure to drop to zero.
- It is the soler responsibility of
the user to select the DOSATRON
adjustments to obtain the desired
dosing
- An air tightness problem, an
impurity or a chemical attack on
the seal can interrupt the correct
dosing operation. Periodic checking
that the concentrate to be dosed
is being correctely drawn into the
DOSATRON is recommended.
- Change the DOSATRON suction
hose as soon as it seems damaged
by the concentrate being dosed
- Release the pressure after use
(advised).
- Rinsing of the DOSATRON is
essential:
. whenever the product is changed
. before handling the DOSATRON,
to avoid any contact with
aggressive products.
- All assembly and tightening should
be done manually without tools.
2-WATER WITH HIGH PARTICLE
CONTENT
A filter sieve must be installed
upstream of the DOSATRON when
water has a high particle content
(e.g. 300 mesh - 60 microns
depending on your water quality) If
this filter is not installed, abrasive
particles will cause the DOSATRON
to wear prematurely.
3 - WATER-HAMMER/OVERFLOW
- For installations subject to water
hammer, a water hammer protection
device must be fitted (pressure/flow
control system).
- For automated installations, it is
preferable to use slow opening and
slow closing solenoid valves.
- In the case where a DOSATRON
serves several sectors, activate
the solenoid valves simultaneously
(closure of one sector and opening
of another sector at the same time).
PRECAUTIONS (cont...)
4 - INSTALLATION LOCATION
- The DOSATRON and the product
to be dosed should be accessible.
- Their installation must under no
circumstances present a pollution or
contamination risk.
- It is recommended that all water
pipes are marked showing that the
water contains additives and with
the wording: “IMPORTANT! Non-
potable water”.
5-MAINTENANCE
- After use, the aspiration of clear
water is recommended.
- Annual maintenance will optimise
the life of your DOSATRON.
Annually replace the dosing part
seals and the product suction hose.
6-SERVICE
- This DOSATRON was tested prior
to packaging.
- Repair sub-assemblies and
sachets of sealss are available.
- Do not hesitate to call your
distributor or DOSATRON for any
after-sales services.

© DOSATRON INTERNATIONAL S.A.S / 17 © DOSATRON INTERNATIONAL S.A.S / 18
EN
Fig. 1
C
AA
B
W
a
t
e
r
fl
o
w
THE INSTALLATION ASSEMBLY SHOULD BE CARRIED OUT WITHOUT
TOOLS
The DOSATRON is delivered with :
- a mounting bracket,
- a suction hose with a strainer.
The bracket enables the DOSATRON to be mounted on a wall.
Place the DOSATRON in the bracket by spreading its arms slightly to click in
the 4 pins of the pump body (Fig. 1-A) fitting the two pins on one side of the
body (Fig. 1-A) into the corresponding holes in the bracket (Fig. 1-B).
Remove the plastic caps, (Fig. 1-C) which block the openings in your
DOSATRON, before connecting to the water supply line.
INSTALLATION OF THE DOSATRON
Torque 20 N.m
i.e. 2 kg.m
(reminder: 1 N.m = 0.1 DaN.m)
RECOMMENDATIONS
The DOSATRON can be connected to the water supply line by means of
20 mm interior diameter flexible pipes fixed with swivel fittings Ø 20 x 27 mm
[3/4”]. Make certain that the water flows in the direction of the arrows (water
flow) on the appliance.
Whenever possible, install the Dosatron high enough for easy reading and
adjusting of the dosing on the graduated scale in % or ratio.

© DOSATRON INTERNATIONAL S.A.S / 19 © DOSATRON INTERNATIONAL S.A.S / 20
EN
The DOSATRON dosing rate can be adjusted according to two scales:
percentages and ratios. These scales are positioned on either side of the
dosing part. Depending on the water circulation direction in the hydraulic
installation, and on the direction in which the dosing pump is mounted on its
bracket, it may be necessary to change the orientation of this scale.
- Lift the quick coupling ring
(patented system) and unlock the
dosing part by unscrewing the
ring as far as the mechanical stop
(approx. 1/8th of a turn) (Fig. 2).
- Pull downwards and rotate a half-
turn to release the dosing part to
see the correct dosing adjustment
scale.
- Insert the dosing body into the
pump body taking care to align the
aligning pins.
- If needed, to see the pins better,
unscrew the dosing adjustment
sleeve so as to reach the value of
3% or 1/33 (Fig.3).
- Push the quick coupling ring
towards the pump body and lock
in place by tightening the ring until
it clicks (approx. 1/8
th
of a turn)
(Fig.4)
The DOSATRON is delivered with a suction hose (cut it to the required
length). This hose must be fitted with the strainer and ballast.
NOTE: The maximum suction height is 4 metres (13 feet).
- Unscrew the hose nut (Fig. 5) at the bottom of the dosing part and fit it
over the hose.
- Push the hose into the barbed fitting as far as it will go and screw the nut
by hand (Fig. 6).
- Assemble the strainer on the other end of the hose (Fig. 7) using the same
method.
- Immerse the strainer into the solution to be dosed.
CHANGING THE DOSING SCALE CONNECTING THE SUCTION HOSE

Fig. 5 Fig. 6 Fig. 7

Fig. 2

Fig. 4
Fig. 3

© DOSATRON INTERNATIONAL S.A.S / 21 © DOSATRON INTERNATIONAL S.A.S / 22
EN
IMPORTANT! Under no circumstance should the solution level be above
the water inlet of the DOSATRON (to avoid siphoning) (Fig. 8).
INSTALLATION OF THE DOSATRON
WHAT YOU SHOULD DO
WHAT YOU MUST NOT DO
t
t
INSTALLATION TIPS
OVERFLOW (as an indication)
If your DOSATRON clacks more than 40 times, in 15 seconds, (i.e. 20 motor
cycles) you are at the upper water flow capacity limit. Beyond this select a
DOSATRON with a higher water flow capacity.
The DOSATRON must be assembled in by-pass as shown belown (Fig. 9).
For installations using header tanks, be sure to have the minimum water
pressure available for correct operation of the Dosatron (the lowest water
level height in relation to the drinking troughs).
If your flow is above DOSATRON limits, see the § OVERFLOW.
To prolong the working life of the DOSATRON, it is advisable to install a filter
(e,g, 300 mesh - 60 microns depending on your water quality) upstream of the
DOSATRON. This is imperative if the water contains impurities or particles,
especially if the water comes from a well or it is surface water.
A filter is required for the warranty to be valid.
Installing the DOSATRON on a by-pass enables clear water to be supplied to
the installation without operating the DOSATRON and enables it to be easily
dismantled.
For any
installation on
the drinking
water supply
line, respect
the standards
and regulations
in force in the
country.
Clear water valve:
preparing the stock
solution & rinsing
the tank
Fast priming valve/rinsing/
Dosatron test valve
Valve
Valve
Valve
Filter
NO!
Fig. 8
Fig. 9

© DOSATRON INTERNATIONAL S.A.S / 23 © DOSATRON INTERNATIONAL S.A.S / 24
EN
Putting the Dosatron
into service
PUTTING INTO SERVICE FOR THE FIRST TIME
USE
NOTE: the time required for priming the dosed solution depends on the
water flow, the dosing adjustment and the length of the suction hose for
the product.
The device is designed to operate with fluids the temperature of which
must not exceed 40°C or 104°F (engine fluid, additive, mixture engine fluid/
additive). In the event of installation subject to operating at temperatures
less than 5°C (41°F), protect the installation from frost (see precautions
instructions). The dosing pumps are designed for use at up to 6 bars. The
installation must be protected against any overpressure risk. The installation
must also be sized to avoid any hydraulic oscillatory phenomenon (water
hammer). If necessary, a water hammer protection device should be fitted.
- Partially open the water inlet.
- Press the bleed button on the top cap (Fig.10).
- When a constant flow of water is seen coming from
around the bleed button (no more “spitting” of air),
release the button.
- Slowly open the Dosatron By-pass valves and close the
main valve
- Slowly open the fast priming valve situated downstream
of the Dosatron (Fig. 9 Page 22)
- Operate the DOSATRON until the product to be dosed
rises in the dosing part (the product is visible through
the plastic hose), then close the fast priming valve.
- The DOSATRON makes a characteristic “click-clack”
noise when working.
 
ADJUSTING THE DOSING (unpressurised)
DOSING PRINCIPLE
IMPORTANT! Do not use tools.
Dosing adjustment must be made unpressurised.
- Turn off the water inlet and allow the pressure to drop to zero.
- Loosen the dosing locker (patented system) by a quarter turn (Fig. 11).
- Screw or unscrew the dosing adjustment sleeve in order to line up the 2
eyelet points with the desired dosing marker (Fig. 12).
- Retighten the dosing locker (Fig. 13).
Adjustment at 1% - 1/100 = 1
Product volume + 100 volumes of water.
Fig. 10 Fig. 11 Fig. 12 Fig. 13

© DOSATRON INTERNATIONAL S.A.S / 25 © DOSATRON INTERNATIONAL S.A.S / 26
EN
Maintenance
RECOMMENDATIONS
1 - When using soluble products put into stock solutions, contact
manufacturers/distributors to verify the real solubility level of oral powders.
It is preferable to use a Dosatron with a high dosing rate (min. 4 - 5%) to
guarantee a sufficient pre-dilution rate for powders. After use, always rinse
the dosing pump by injecting clear water. Open the rinsing/ fast priming
valve situated downstream of the Dosatron for a high-flow energetic rinsing/
cleaning. We recommend periodic dismantling and rinsing of the suction
valve found in the bottom of the dosing part to prevent possible leaks and
backflow into the tank due to clogging in the valve (Fig. 14).
2 - Please read the § PRECAUTIONS before performing any maintenance
on the DOSATRON. Before putting the DOSATRON into operation after a
long non-use period, remove the motor piston and soak it in lukewarm water
at < 40°C (104° F) for a few hours. This helps to remove any deposits which
may have dried onto the motor piston.
DISMANTLING THE SUCTION HOSE
Before performing any maintenance on the DOSATRON, please make sure
you refer to the § PRECAUTIONS.
Before dismantling, and to avoid any contact with the products dosed,
operate the DOSATRON by aspirating clear water to rinse the dosing pump,
the hose and the dosing part.
- Unscrew the nut at the bottom of the dosing part (Fig. 15)
- Pull downwards to remove the hose from the suction valve head (Fig. 16).
- Reassemble in the reverse order. If needed, please read the
§ CONNECTING THE SUCTION HOSE.
IMPORTANT: connecting the hose incorrectly or a hose damaged by the
additives dosed may cause an air tightness problem with the suction which
may lead to unpriming or under-dosing
Fig. 15 Fig. 16

Suction hose
+ strainer
+ ballast
Suction
valve
Suction
valve nut
Suction
hose nut
Fig. 14

© DOSATRON INTERNATIONAL S.A.S / 27 © DOSATRON INTERNATIONAL S.A.S / 28
EN
CHANGING THE DOSING PART SEALS
Frequency: At least, once per year.
Contact DOSATRON, or one of its distributors, for seal kits adapted to your
dosing pump.
For dismantling the dosing part, follow the instructions in the § DISMANTLING/
REFITTING THE DOSING PART.
IMPORTANT! Do not use tools or metal utensils.
Replacing dosing piston seal (Fig. 20):
- Between finger and thumb, pinch the
component and the seal; push towards the
other side to distort the seal. (Use a dry cloth
to prevent the seal from slipping between your
fingers)
- Increase the distortion to grip the part of the
seal which overlaps and then pull it out of its
groove.
- Clean the seal groove without any tools. (use
water and a cloth)
- Refitting is done by hand. It is very important
that the seal is not twisted once in place as
this would impair its watertightness.
Change the O-ring of the dosing body:
-Use the method explained below:
Change the suction valve:
- Unscrew the suction valve retaining ring
- Remove the suction valve by pulling it in the
axis of the dosing part.
DRAINING THE DOSATRON
For complete maintenance of the DOSATRON, or to protect it from frost,
draining may be necessary.
- Close the water inlet and reduce the pressure to zero by opening the fast
priming valve situated downstream of the Dosatron.
- Remove the dosing part (§ DISMANTLING/REFITTING THE DOSING
PART).
- Remove the top cap and the motor.
- Disconnect the connectors at the DOSATRON inlet and outlet.
- Empty the pump body after having removed it from the mounting bracket.
- Refit, having first cleaned the motor top cap seal.
Fig. 20
DISMANTLING/REFITTING THE DOSING PART
Before performing any maintenance on the DOSATRON, it is essential to refer
to the § PRECAUTIONS. Before dismantling, and to avoid any contact with the
products dosed, operate the DOSATRON by aspirating clear water to rinse the
dosing pump.
- Turn off the water supply and let the pressure
drop to zero.
- Remove the suction hose (see § DISMANTLING
THE SUCTION HOSE)
- Lift the quick coupling ring (patented system)
and unlock the dosing part by unscrewing the
ring up to the mechanical stop (approx. 1/8
th
of a turn) (Fig.17 )
- Pull downwards to remove the dosing part.
- Before refitting, position the dosing part
according to the desired scale (percentage
or ratio).
- Insert the dosing body into the pump body
taking care to align the aligning pins correctly
(Fig. 18). If needed, to see the pins properly,
unscrew the dosing adjustment sleeve to
reach the value of 3% or 1/33.
- Push the quick coupling ring up towards the
pump body and lock in place by tightening
the ring until it clicks (approx. 1/8
th
of a turn)
(Fig. 19)

Fig. 17
Fig. 18

Fig. 19

Suction
valve
Suction
valve
nut
Suction hose
nut
Eyelet

© DOSATRON INTERNATIONAL S.A.S / 29 © DOSATRON INTERNATIONAL S.A.S / 30
EN
Change the O-ring of the dosing pump body:
- Release the retaining ring by pulling the ears
apart (Fig. 21).
- Extract the dosing locker by sliding it
towards the bottom of the dosing pump
body.
- Free the dosing pump body by pushing it
through the dosing body (Fig. 21)
- Change the dosing pump body O-ring
following the same procedure described
above.
- Refit the dosing pump body using the
aligning pins (Fig. 22)
- Refit the dosing locker along the dosing
pump body taking care to align the aligning
pins (Fig. 23)
- Refit the retaining ring so that it sits properly
in its groove. (Fig. 24)
- Finish by refitting the suction valve and its
nut. (Fig. 25)
DISMANTLING/REFITTING THE DOSING PISTON
Before performing any maintenance on the DOSATRON, it is essential to refer
to the § PRECAUTIONS. Before dismantling the DOSATRON, and to avoid
any contact with the dosed products, operate the DOSATRON by aspirating
clear water to rinse the dosing pump.
- Close the water inlet and reduce the pressure to zero by opening the fast
priming valve situated downstream of the Dosatron.
- Dismantle the dosing part, following the instructions in the § DISMANTLING/
REFITTING THE DOSING PART. (Fig. 26)
- Turn the dosing piston through a quarter turn anti-clockwise to unlock it and
release it from the motor piston. (Fig. 27)
- Refit in the reverse order.

1
2
90°
Fig. 21
Fig. 22 Fig. 23
Fig. 24 Fig. 25
Fig. 26 Fig. 27

© DOSATRON INTERNATIONAL S.A.S / 31 © DOSATRON INTERNATIONAL S.A.S / 32
EN
CHANGING THE MOTOR PISTON (unpressurised)
Before any maintenance on the DOSATRON,
it is essential to refer to the § PRECAUTIONS.
Before dismantling, and to avoid any contact
with the products dosed, operate the
DOSATRON by aspirating clear water to rinse
the dosing pump.
- Close the water inlet and reduce the pressure
to zero by opening the fast priming valve
situated downstream of the Dosatron.
- Unscrew the top cap manually (Fig. 30) and
remove it.
- Remove the motor piston (Fig. 31) by pulling
upwards.
- The dosing piston follows the motor piston
upwards.
- Change and refit the assembly in the reverse
order.
- Refit the top cap taking care not to damage its
seal and screw it on manually.
Troubleshooting
SYMPTOM CAUSE SOLUTION
Motor piston
DOSATRON does
not start or stops
Check your water inlet
(no water consumption
by the animals, supply
failure, clogged filter,
Dosatron By-pass valves
improperly positioned,
etc.)
Open the rinsing/fast
priming valve situated
downstream of the
Dosatron to test the water
supply and the operation of
the dosing pump.
Very low flow/pressure.
Check that your installation
has a sufficient minimum
pressure.
Important: when the water
flow is very low, the Dosatron
motor may require several
minutes to complete a full
cycle. (characteristic clack of
the motor)
Motor piston blocked.
Bleed the dosing pump by
opening the clear water and
fast priming valves situated
downstream and upstream
of the Dosatron and then
dismantle the top cap in
order to access the motor
piston. Test the motor piston
by hand. Action the valve
mechanism by pressing the
vertical pushbutton until you
hear the click of the valves
being switched on.
Presence of air in the
DOSATRON.
Bleed the air using the bleed
found on the top cap > useful
under extremely low water
flow and pressure conditions.
Overflow.
1. If overflows are frequent,
consider a Dosatron with a
higher capacity.
2. Check that the motor piston
seals are present.
Motor piston is broken. Return the DOSATRON to
your distributor.
Fig. 30 Fig. 31
CLEANING AND REFITTING THE SUCTION VALVE
Before any maintenance on the DOSATRON,
it is essential to refer to the § PRECAUTIONS.
Before dismantling, and to avoid any contact with
the dosed products, operate the DOSATRON by
aspirating clear water to rinse the dosing pump.
- Close the water inlet and reduce the pressure
to zero by opening the fast priming valve situated
downstream of the Dosatron.
- Remove the suction hose (see §
DISMANTLING THE SUCTION HOSE)
- Unscrew the suction valve nut
(Fig. 28).
- Release the suction valve by pulling it
downwards in the axis of the dosing part
- Thoroughly rinse the various parts of the valve
using clear water.
- As indicated in the diagram (Fig. 29).
- Refit the assembly in the reverse order. Be
careful that the valve seal is refitted in the right
direction.
Fig. 28 Fig. 29

© DOSATRON INTERNATIONAL S.A.S / 33 © DOSATRON INTERNATIONAL S.A.S / 34
EN
SYMPTOM CAUSE SOLUTION
Dosing
Water flowing back
into the product tank.
Suction valve or valve
seal dirty, worn, absent or
wrongly fitted.
To be cleaned or replaced.
No suction of product.
The motor piston has
stopped working.
See Troubleshooting Motor
piston.
Air tightness problem in
the suction hose.
Check the suction hose and
the tightening of its nuts.
Change the suction hose
when it becomes too
supple or rigid depending
on the additives dosed.
This can interfere with
the watertightness of the
connector on the Dosatron.
Suction hose obstructed or
strainer blocked. Clean it or replace it.
Suction valve seal worn,
wrongly fitted or clogged. Clean it or replace it.
Dosing piston seal wrongly
fitted, clogged or swollen. Clean it or replace it.
Dosing pump body
scratched. Replace it.
Leaks
Leaks close to the quick
coupling ring under the
pump body.
Dosing body seal
damaged, wrongly
positioned or absent.
Position it correctly or
replace it.
Leaks between the
dosing adjustment
sleeve and the dosing
locker.
Dosing pump body
seal damaged, wrongly
positioned, absent or
dosing pump body grooves
scratched.
Position it correctly or
replace it.
Leaks between the
body housing and the
top cap.
Top cap seal damaged,
wrongly assembled or
absent.
Position it correctly, clean
seal groove or replace it.
DOSATRON INTERNATIONAL DECLINES ALL
RESPONSIBILITY IN THE EVENT OF USE THAT IS NOT
COMPLIANT WITH THE INSTRUCTIONS FOR USE.
Limited Warranty
DOSATRON INTERNATIONAL
S.A.S. agrees to replace any part
recognised to be defective originally
for a period of twelve months from
the date of purchase by the initial
purchaser.
To obtain the replacement under the
warranty, the appliance or spare part
must be returned with proof of initial
purchase to the manufacturer or
authorized distributor.
It may be recognised as defective
after examination by the technical
services of the manufacturer or
distributor.
The appliance must be rinsed to
remove any chemicals and sent to
the manufacturer or to the distributor
with postage paid, then it will be
returned free of charge after repair if
it is covered by the warranty.
The purpose of operations carried
out under the warranty may not be to
extend the lifetime.
This warranty applies only to
manufacturing defects.
This warranty does not cover
defects found to be due to abnormal
installation of the appliance,
inappropriate use of tools, lack of
maintenance or defective installation
or environmental accidents or
corrosion by foreign bodies and
liquids found within or in proximity to
the appliance.
For the dosing of aggressive
products, please consult your
vendor before any use to confirm
compatibility with the dosing pump.
The seals (wearing parts) are not
covered under warranty, nor is
damage caused by water impurities
such as sand, minerals and any other
abrasive particles.
A filter (e.g. 300 mesh - 60 microns
depending on your water quality)
must be installed before the
appliance.
DOSATRON INTERNATIONAL
S.A.S. declines any responsibility if the
appliance is not used in compliance
with the recommendations and
tolerances in the owner’s manual.
There is no explicit or implicit
guarantee relating to other products
or accessories used with DOSATRON
INTERNATIONAL S.A.S appliances.

© DOSATRON INTERNATIONAL S.A.S / 35 © DOSATRON INTERNATIONAL S.A.S / 36
EN
KNOW YOUR FLOW
nCalculation of water flow in l/h =
Number of clacks in 15 seconds =x 4x 60 x 0.45
2Calculation for 1 hour
Calculation for 1 minute
2 clacks = 1 cycle
Motor capacity
in litres
NOTE: This method of calculation cannot replace a flow meter.
It is given only as an approximate guide.
nCalculation of water flow in GPM =
Number of clacks 15 seconds =x 4x 0.45 x 3.8
2
Motor capacity in litres
Calculation for 1 minute
2 clacks = 1 cycle
Conversion
litres to gallons
A SIMPLE METHOD
THE DOSATRON IS COMPOSED OF:
A volumetric
piston
hydraulic
motor driving:
In its backwards and forwards
movement, the motor piston clacks:
a dosingpiston
2 clacks =
1 motor cycle =
1 motor capacity
Once in the
top position
Once in the
bottom position
The speed of the motor is proportional to the flow of water passing through
the appliance.
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NOTES

© DOSATRON INTERNATIONAL S.A.S / 37 © DOSATRON INTERNATIONAL S.A.S / 38
Courbes / Curves
Diagramm / Curva
Curvas / Grafiek
Кривые / Krzywe
Gráficos
295............................................
Annexes
Enclosure
Anhang
Anejos
Allegati
Bijvoegsel
Приложения
Załączniki
Anexos

© DOSATRON INTERNATIONAL S.A.S / 39 © DOSATRON INTERNATIONAL S.A.S / 40
Pertes de charge
Pressure loss
Druckverlust
Perdite di carico
Perdidas de carga
Drukverlies
Пoтери напора
Przepływ
Caudal
D25AL5N
0 1 2 3 4 5 6 7 8 9 10 11 12
0 2 4
6 8 10 12 14 16 18 20 22 24 26 28
0
0.2 0.4
0.6 0.8
1
1.2 1.4 1.6 1.8
2
0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750
Flow Rate (US GPM)
D25AL5N - Courbes de Pertes de charges à 5% - Pressure drop curves at 1:20
Débit- Water flow rate - Durchsatz - Portata - Caudal - Doorstroming > in GPM
Пoтери напора - Strata ciśnienia - Perdas de pressão > in Bar (kgf/cm2)
A 3 Bar - 44 PSI at Inlet A 6 Bar - 87 PSI at Inlet
Sans pression - Free outlet - OhneDruck - Senza contro - pressione- Sin contra-presión - Drukloos - Без противодавления - bez ciśnienia zwrotnego - Sem contrapressão
Расход - Przepływ - Caudal > in l/h - l/Std - l/u
Pertes de charges - Pressure loss - Druckverlust- Perdite di carico - Perdidas de carga - Drukverlies - > in PSI