Dosmatic MINIDOS 0.4% User manual

®
Model 0.4%
Model 0.4% PAA
Model 1%
Model 2.5%
Model 5%
Model 10%
Model 20%
The Technolo
gy
Leader In Fluid-Driven Proportional In
j
ectors
Operating Manual•Mode D'Emploi
Bediehnungs Handbuch •Manual de Operación
Manual de operação
Fluid Flow Range:
Débit d'eau:
Durchflussmenge:
Caudal de trabajo:
Vazão Operativa:
0.03 gpm to 12 gpm*
0,11 l/mn to 45 l/mn*
Injection Range
Dosage:
Dosierung:
Dosificación:
Injeção:
0.025% to 20%
1:4000 to 1:5
Operating Pressure:
Pression:
Druck:
Presión operativa:
Pressão operativa:
6 to 140 psi*
0,41 to 6,9 bar*
*Specifications vary by model.
*Les données techniques varient
selon les modèles.
* Technische Daten sind je nach
Modell unterschiedlich.
* Características técnicas varían
según modelo.
* Características técnicas variam
conforme o modelo.

English: 2
A
B
Quick Start Up
Démarrage Rapide
Schnell Antrieb
Puesta en marcha rápida
Inicialização rápida
A
2
Part # 013815 Rev. J
C
10% 20%
0.4%,
2.5%
5%

English
English: 3
English.....................................................3-25
Français................................................26-39
Deutsch.................................................40-53
Español.................................................54-67
Português.............................................68-81
Dosmatic®
North America &
Global Headquarters:
Hydro Systems Company
3798 Round Bottom Road
Cincinnati, OH 45244
Phone: [phone]
Fax: [phone]
Toll Free: 800-543-7184
Europe, Middle East,
Africa, & India
Hydro Systems Europe
Unit 3, The Sterling Centre,
Eastern Road
Bracknell, Berkshire
RG12 2PW
Europe
Phone: [phone]
Fax: [phone]
Asia Pacific:
Hydro Systems Asia Pacific
Unit A
1 Kelham Place
Glendenning, NSW 2761
Australia
Phone: [phone]
Fax: [phone]
South America:
Hydro Systems South America
Rua Mogiana, 172,
Chacarras Reunidas,
Sao Jose Dos Campos,
Brasil
Phone: [phone]
Fax: [phone]
Hydro Systems Company Offices:

English: 4
Installed directly in the fluid supply line, the injector operates without electricity, using fluid (water)
pressure as the power source. The fluid drives the injector, which pulls the required percentage of
concentrate directly from the chemical solution container. Inside the Dosmatic patented mixing
chamber, the concentrate is mixed with the fluid, and the fluid pressure forces the mixed solution
downstream. The amount of concentrate will be directly proportional to the volume of fluid entering
the injector, regardless of variations in flow or pressure.
Fluid flow drives
motor piston.
Chemical does not
come in contact
with the motor.
Chemical is mixed
in the patented
mixing chamber.
Blended solution
Intake from chemical
container
Operating Principle
Accurate and Reliable
→
→
→
→
→

English
English: 5
This document does not form a contractual engagement on the part of Dosmatic and is for
information only. Dosmatic reserves the right to alter product specifications or appearance without prior notice.
For Your Records
The serial number of your Dosmatic injector is located
on the injector body. Please record this number in the
space below and reference it when calling your distributor
or Dosmatic for information, parts and service.
Serial #..............................................................................
Date Purchased ................................................................
Important:
for product registration
visit our website
www.dosmatic.com
to fill out product
registration form!
Please read this manual carefully before putting the Dosmatic injector into operation.
This booklet has the information you will need for the use and care of your new Dosmatic injector.
If you have any further questions about your injector, the warranty, routine maintenance or proper
usage, please contact your nearest distributor or Dosmatic customer service.
These models are designed to inject liquid concentrate or soluble powder that are recommended
and approved for injection into fluid systems.
lt is the responsibility of the operator to determine the correct dosage settings of the unit using the
chemical manufacturers’ recommendation for dispensing their product, and to assure that proper
dosage is being maintained.
Maintenance and Warranty
Dosmatic offers a three year limited warranty from the original date of purchase for manufacturing
or materials defects only. With proper use and care, your injector should provide you long-term
performance. Please review the complete warranty information on page 25.
English
Contents
Operating Principle ............................................................................................................. 4
Package Contents ............................................................................................................... 6
Specifications ..................................................................................................................... 6
Safety Precautions .............................................................................................................. 7
Warranty Compliance .......................................................................................................... 7
General Tips ....................................................................................................................... 7
Operations .......................................................................................................................... 8
Installation and Start-up .....................................................................................................9
Suggested Installation Diagram .......................................................................................... 9
Maintenance .................................................................................................................... 10
Remote Injecting ............................................................................................................... 10
Routine Maintenance Instructions 0.4% ............................................................................ 11
Routine Maintenance Instructions 1% ............................................................................... 12
Routine Maintenance Instructions 2.5% & 5% ................................................................... 13
Routine Maintenance Instructions 10% ............................................................................. 14
Routine Maintenance Instructions 20% ............................................................................. 15
Troubleshooting ................................................................................................................ 16
Injector Repair Parts ........................................................................................................17
Lower end injector & wear parts kits 0.4% PAA: ................................................................ 18
Lower end injector & wear parts kits 0.4%: ....................................................................... 19
Lower end injector & wear parts kits 1%: .......................................................................... 20
Lower end injector & wear parts kits 2.5%: ....................................................................... 21
Lower end injector & wear parts kits 5%: .......................................................................... 22
Lower end injector & wear parts kits 10%: ........................................................................ 23
Lower end injector & wear parts kits 20%: ........................................................................ 24
Warranty ........................................................................................................................... 25

English: 6
Specifications
Package Contents
1%
011005
54 195008
51
004014 (2x)
55
44
20%
195909
44
10%
194309
011008 5%
010044
44
0.4% 010028 (PAA)
20% 011849
10% 011025
5% 011015
2.5% 010025
1% 010025
0.4% 011023
1% 011017
2.5% 011017
10% 011018
5% 011026
95 195950
0.4% 003072
212005
17
51
0.4%
25
27 0.4% 005218 (PAA) 44 195444
2.5%
Dosmatic Injector (not shown) Mounting Bracket
Dosage Piston Mounting Nuts and Bolts
O-ring Filter
Manual (not shown) Suction Tube
Lower Shaft Assembly
The injector is packaged
with the following items:
Housing Proprietary Engineered
Composite Material
Dosing Accuracy +/- 10% of ratio
Repeatability +/- 3% of ratio
Pressure Loss Available upon request
Maximum Temp. 100ºF (38ºC)
Minimum Temp. 34ºF (1ºC)
Maximum vertical suction
of concentrate
13 Feet (3.6 Meter)
Maximum horizontal
suction of concentrate
49 Feet (15 Meter)
Self-Priming Yes
Seal Material Available:
*Contact your Dosmatic
representative for specific
chemical information
Aflas
Viton
EPDM
Kalrez
Teflon Coated
Maximum Viscosity 1,500 cP (Ex. Honey)
Recommended
Accessories
140 mesh (104 micron)
filter, check valve, pressure
regulator, flow restrictor.
Model NPT BSP
0.4% 112608 112609
0.4% Heavy Duty 112638 112639
0.4% PAA 112608K 112609K
1% 112600 112601
1& Heavy Duty 112630 112631
2.5% 112602 112603
2.5% Heavy Duty 112632 112633
5% 112604 112605
5% Heavy Duty 112634 112635
10% 112606 112607
10% Heavy Duty 112636 112637
20% 112620 112621
20% Heavy Duty 112640 112641
20% Remote
Injection 112622 112623
MiniDos7gpm(65max.psi)
Model 20% 4% - 20% (1:25 - 1:5)
Flow Rate: 0.07 - 7 gpm (0,26 - 27 l/mn)
Operating Pressure: 6 - 65 psi (0,41 - 4,5 bar)
Pipe Coupling: 3/4” NPT/BSP
MiniDos10gpm(65max.psi)
Model 10% 2% - 10% (1:50 - 1:10)
Flow Rate: 0.07 - 10 gpm (0,26 - 38 l/mn)
Operating Pressure: 6 - 65 psi (0,41 - 4,5 bar)
Pipe Coupling: 3/4” NPT/BSP
MIniDos12gpm(140max.psi)
Model 0.4% 0.025% - 0.4% (1:4000 - 1:250)
Model 1% 0.20% - 1% (1:500 - 1:100)
Model 2.5% 0.50% - 2.5% (1:200 - 1:40)
Model 5% 1% - 5% (1:100 - 1:20)
Flow Rate: 0.03 - 12 gpm (0,11 - 46 l/mn)
Operating Pressure: 6 - 140 psi (0,41 - 9,7 bar)
Pipe Coupling: 3/4” NPT/BSP

English
English: 7
Remove Red Caps Prior to Installation
Your injector is 100% factory tested before delivery and
may contain a small amount of water. The three red
plastic caps are fitted after testing to ensure cleanliness
of the injector.
Before Applying Aggressive Chemicals
Please consult your distributor, chemical manufacturer
or contact Dosmatic's customer service to confirm
compatibility with your injector. Always wear proper safety
protection as recommended by chemical supplier.
Label all Fluid Lines, Valves and Connections
If the solution that is being injected is not suitable for
drinking, all fluid lines should be labeled:
Warning not for human consumption!
Monitor Outlet Flow
It is the user's responsibility to monitor the output of
chemical injected.
A Filter is Recommended and Required
Install a filter of 140 mesh (104 micron) or finer
depending on your fluid quality to prolong the working
life of the injector and for the warranty to be valid. A
filter is imperative since most fluid contains impurities or
particles, especially if the fluid source comes from a well,
pond or lake.
Safety Precautions
Warranty Compliance
General Tips
For A Long Service Life
Start with clean fluid by using an inline filter to reduce
impurities. Keep the solution container covered and
clean. Keep the suction tube filter 2" (5 cm) from
the bottom of the container. Perform maintenance
procedures as recommended (see Maintenance page 10).
Soluble Powder Use
Ensure the chemical is completely dissolved before
starting the injector. If necessary, dissolve the chemical
in hot water and allow to cool before using. Failure to
thoroughly dissolve the chemical will cause premature
wear to the dosage piston and the inner cylinder.
!
Please read this instruction manual thoroughly. Following the procedures,
will increase the life of your injector.
Warning,Please read precautions thoroughly before operation. Must meet all
applicable local codes and regulations.
Avoid a Potentially Hazardous Chemical
Accident
Select a safe location. Chemical container should be
kept away from children and/or high usage areas and
the location must also not be susceptible to freezing
temperatures.
Avoid Solution Contamination
Use only clean FILTERED fluid. Do not allow contaminants
to enter the solution container. They can be pumped into
the fluid line and may cause the spread of disease. Dirt,
debris and other contaminants in the solution container
may cause excessive wear to the unit.
Fluid Temperature
Min: 34°F (1°C) Max: 100°F (38°C)
Maximum Fluid Pressure
0.4%, 1%, 2.5%, 5% - 140 psi (9,7 bar)
10% & 20% models have maximum operating pressure
of 65 psi (4,5 bar).
Operating pressure and flow are reduced while using
remote injection kit.
Install a pressure regulator and/or pressure relief valve to
ensure operating pressure does not exceed the maximum
specification.
Before Removing An Injector From The System
Release fluid pressure. While the system is in operation,
turn off the incoming fluid valve. Leave the out going
valve open this will relieve the pressure at the injector
and all parts of the system after the injector. Injector is
now safe to remove.
Keep From Extreme Temperature
Protect the injector from freezing temperatures or
excessive heat.
Rinse Injector After Each Use
Additive allowed to remain in injector can dry out, foul
or damage the lower end at the next start-up (see
Maintenance page 10).
Injector Not in Use for an Extended Period
If the injector has not been stored properly deposits may
have dried onto the motor (see Maintenance page 10).
Before operation, soak entire unit into room temperature
water approx. 72°F (22°C) for an eight hour period.

English: 8
Operations
Clicking Sound is Normal
Fluid flowing through the injector will automatically cause
the injector to “click” and inject a set amount of solution
into the fluid line. The higher the flow rate the more frequent
the "clicking". The injector is designed to inject solution
proportionally (at the same set ratio) regardless of fluid flow.
Service Fluid Flow
Fluid flow and pressure must be within the established
specifications (see Specification on page 6) for your model.
Change Feed (Injection) Rate
The feed rate on the injector is adjustable EVEN WHILE
OPERATING AND UNDER PRESSURE. To change feed rate see
Fig 1 (a, b or c) and Fig 2 (a, b or c) based on your injection
rate. Do not remove #79 when injector is under pressure.
MiniDos 0.4%, 1%, 2.5% and 5%, see Fig 1a and 2a
Rotate Ratio Adjuster (#61) (Fig 1a) up or down using the
Setting Indicator Mark (Fig 2a) to select the desired feed rate.
MiniDos 10%, see Fig 1b and 2b
1. Remove Interlock Pin (#65) (Fig 1b.).
2. Rotate Ratio Adjuster (#61) up or down to the desired
setting. Use the top of the Ratio Adjuster Sleeve to line up with
the desired feed rate setting (Fig 2b).
3. Re-insert Upper Interlock Pin (#65). Clip must be parallel
with settings to be able to re-insert.
MiniDos 20%, see Fig 1c and 2c
1. Remove Ratio Locking Pin (#79) (Fig 1c.).
2. Rotate Outer Cylinder (#7) up or down to the desired setting.
Use the top of the Outer Cylinder to line up with the desired
feed rate setting (Fig 2c).
Bypass Operation
Injecting solution into the fluid line can be TEMPORARILY
stopped with the On/Off feature (Fig. 3). Moving the
On/Off Lever to the OFF position allows service fluid to
pass through the injector without injecting chemical. No
"clicking" will be heard.
With the On/Off lever set to the ON position the injector
will operate as normal and “clicking” will be heard when
fluid is flowing. It is recommended to use the three-valve
bypass (see Fig. 5), for continued bypassing or servicing
of the injector.
Fig. 3
Fig. 4
Run Position
(clicking)
Off Position
(not clicking)
004014(2x)
195008
Typical wall
mounting
Fig. 1b
Fig. 1a
Fig. 2a
A
#61
C
B
MiniDos 0.4%, 1%, 2.5% and 5% MiniDos 10%
#79
MiniDos 20%
Fig. 1c
Fig. 2b Fig. 2c
#61
#65
#7
NOTE: Do not adjust feed rate below lowest setting line.
Measure outlet fluid to assure desired feed rate is being delivered.
#79
#79

English
English: 9
Fluid Filter (Required)
Install a filter of 140 mesh (104 micron) or finer depending
on your fluid quality to prolong the working life of the injector
and for the warranty to be valid. Dosmatic recommends a
Twist II Clean®filter that can be ordered with your injector.
Mounting Injector
Securely fasten your injector to a solid object such as a wall or in
a cold fluid line. Note arrow on injector indicates fluid flow.
Backflow Preventor (Recommended)
Install one that meets local code requirements.
Pressure Safety Release Device (Recommended)
Prevents pressure from exceeding specifications of the unit.
Bypass Valve Set-up (Recommended)
Allows the injector to be taken off-line for maintenance
or storage when not in use.
Fluid-Hammer Arrester (Recommended)
Prevents fluid-hammer damage to the injector when operating
quick closing solenoid, pneumatic or hand-operated ball valves
on the fluid system.
Anti-Siphon Valve (Optional)
To prevent solution from being siphoned out (from the solution
container) into the feed lines when the upstream valve is shut off.
The anti-siphon valve must be installed on the downstream outlet.
Additional Siphoning Prevention
Place solution container on a level below the injector suction tube
fitting. Using the inlet side as a shut-off valve could cause full
strength solution to siphon into the feed line.
Solution Container
Use any size container. A lid or cover is recommended. To connect
your solution container, gently push the end of the suction tube
onto the bottom of the suction tube fitting assembly.
Place the filter into the solution container at least 2" (5cm) from
the bottom and fill with at least 2" (5cm) of chemical solution.
Never Use Petroleum Based Lubricants
The injector is shipped with a thin coat of silicone around the
seals for ease-of-assembly. Petroleum based lubricants such
as Vaseline©, baby oil, WD40©, or motor oil on the O-rings or
any part of the injector should never be used as this can cause
particles to adhere and clog or damage the injector.
Check System for Leaks and Start-Up Procedures
Open the bypass valve (A), close inlet valve (B) and outlet
valve (C) to prevent fluid flow into the injector. SLOWLY
turn on the main fluid line. Run fluid flows between 5 -12 gpm
(11-45 l/m) through the plumbing system. Turn on all of the valves
located downstream from your injector to release trapped air.
SLOWLY turn on the inlet valve (B). Open the outlet valve (C) and
close valve (A). As fluid travels through the injector, you will hear a
“clicking” sound. Check for leaks and correct if necessary.
INLET VALVE OUTLET
VALVE
BACK FLOW
PREVENTOR BYPASS
VALVE
DIRECTION OF FLOW
INLET FILTER
140 MESH / 104 MICRON
(MINIMUM REQUIRED)
FLOW CONTROL
VALVE @ OUTLET
50 MM
2 IN
COVERED CONTAINER
SOLUTION FILTER
SUCTION TUBE
ANTI-
S
IPH
O
N
VALVE
(OPTIONAL)
WATER HAMMER
ARRESTER
PRESSURE
REGULATOR
(RECOMMENDED)
(RECOMMENDED)
(RECOMMENDED)
(REQUIRED)
(RECOMMENDED)
PRESSURE
GAUGE
(OPTIONAL)
(OPTIONAL)
FILL VALVE
(OPTIONAL)
6" minimum
PRESSURE SAFETY
DEVICE
(RECOMMENDED)
(RECOMMENDED)
(OPTIONAL)
Installation and Start-up
Fig. 5
Refer to Fig. 4 and Fig. 5
Suggested Installation Diagram
!
(A)
(B) (C)

English: 10
Remote Injecting
RINSE INJECTOR AFTER EACH USE
Additive allowed to remain in injector can dry, foul
or damage the lower end at the next start-up. Place
suction tube into a 1 qt. (0.95 liters) or more container
of fresh filtered water. Flow fresh water through the
injector by operating until container is empty. This
procedure is not needed for continuous operation.
CLEAN SOLUTION CONTAINER
Keep covered to prevent dirt, flies, feathers and
other flying debris from entering the container.
Rinse container thoroughly and often. Do not mix
chemicals together that might react and cause a
precipitate. Use FILTERED fluid when filling container.
CLEAN SUCTION TUBE FILTER SCREEN
Inspect each time new solution is added. Clean filter
screen (#27) and suction tube (#25) as necessary
by rinsing in fresh water. Replace if necessary. Keep
filter screen off bottom of solution container to
prevent dirt and precipitate from clogging filter.
CLEAN INLET FILTER
Clean or replace inlet filter as required to increase
the life of the unit as well as reduce pressure loss.
BYPASS INJECTOR
When not in use place the injector in bypass mode by
using the three valve bypass (preferred) or turn the
On/Off lever on the top of the injector to the off position.
STORAGE
For extended storage, rinse injector (see "Rinse
Injector After Each Use") and place underwater
in a container. Apply monthly, <0.1 oz. (29 ml) of
chlorine bleach to avoid algae growth.
KEEP FROM FREEZING.
Maintenance
Remote Injector Kit (not included)
Is recommended for the following:
Injectors In a Series:
When injecting multiple chemical injections, using two
or more injectors. Each injector adds chemical to the
fluid(water) system, while bypassing the next injector and
eliminating the potential damage to that injector (see Fig.
6). To prevent mineral buildup within the body of the unit.
Use when injecting chemicals that cause minerals to
precipitate from fluid.
NOTE: when mixing more than one chemical, always
refer to your chemical manufacturer information guide
for proper application. Contact your local distributor or
Dosmatic customer service for information or to order.
Remote Injector
Kit shown in a
series.
Fig. 6
Perform these maintenance
procedures to extend the life of your unit.
Every
3 - 6 Months
Every
6 - 12 months
Replace as
necessary
1. Clean seal area
(#13).
2. Check #17 O-ring,
#51 Shaft Assembly,
clean and/or replace
as necessary.
1. Replace #17 O-ring
and #51 Shaft Assembly.
2. Clean and/or replace
#13 Check Poppet, #11
Suction Tube Fitting.
1. #37 Cylinder
2. #17 O-ring
3. #51 Shaft
MiniDos (0.4%)
& (0.4) PAA
Refer to pages
18 & 19
Reference numbers refer to Page 17 - 24
Kit Part Numbers
011762
Every
3 - 6 Months
Every
6 - 12 months
Replace as
necessary
1. Clean seal areas
(# 17, 14 & 13).
2. Check #17 O-ring,
# 68 Cylinder, clean
and/or replace as
necessary.
1. Replace #17 O-ring
and #44 Dosage Piston.
2. Clean and/or replace
#13 Check Poppet, #11
Suction Tube Fitting.
1. #68 Cylinder
2. #14, #17 O-ring
3. #51 Shaft
4. #44 Dosage
Piston
MiniDos (1%)
Refer to page 20
Every
3 - 6 Months
Every
6 - 12 months
Replace as
necessary
1. Clean seal areas
(# 17, 14 & 13).
2. Check #17 O-ring,
#37 Cylinder, clean
and/or replace as
necessary.
1. Replace #17 O-ring
and #44 Dosage Piston.
2. Clean and/or replace
#13 Check Poppet, #11
Suction Tube Fitting.
1. #37 Cylinder
2. #14, #17 O-ring
3. #52 Shaft
4. #44 Dosage
Piston.
Every
3 - 6 Months
Every
6 - 12 months
Replace as
necessary
1. Clean seal areas
(# 17, 14 & 13).
2. Check #17 O-ring,
#37 Cylinder, clean
and/or replace as
necessary.
1. Replace #17 O-ring
and #44 Dosage Piston.
2. Clean and/or replace
#13 Check Poppet, #11
Suction Tube Fitting.
1. #37 Cylinder
2. #14, #17 O-ring
3. #52 Shaft
4. #44 Dosage
Piston
Every
3 - 6 Months
Every
6 - 12 months
Replace as
necessary
1. Clean seal areas
(# 17, 14).
2. Check #17 O-ring,
#7 Cylinder, clean
and/or replace as
necessary.
1. Replace #17 O-ring
and #44 Dosage Piston.
2. Clean and/or replace
#60.
1. #7 Cylinder
2. #14, #17 O-ring.
3. #44 Dosage
Piston
MiniDos (2.5%)
& (5%) Refer to
pages 21 & 22
MiniDos (10%)
Refer to page 23
MiniDos (20%)
Refer to page 24

English
English: 11
Routine Maintenance Instructions 0.4%
Step 1.
Unscrew #7 OUTER CYLINDER
from body.
Step 3.
Remove #16 Gasket.
Step 2.
1/4 turn to remove #51 SHAFT
ASSEMBLY
Step 5.
Remove #17 O-ring.
Step 8.
Replace #51 SHAFT ASSEMBLY.
Step 9.
Screw #7 OUTER CYLINDER
onto body.
Step 7.
Replace #82 SHAFT SEAL
SPACER and #16 Gasket.
Step 6.
Replace #17 O-ring.
↓↓
↓
↓
Step 4.
Remove #82 SHAFT SEAL SPACER.

English: 12
Routine Maintenance Instructions 1%
Step 1.
Unscrew #7 OUTER CYLINDER
from body.
Step 3.
Remove #52 UPPER
SHAFT.
Step 2.
1/4 turn to unlock and remove #51
LOWER SHAFT and replace.
Step 5.
Remove #17 O-ring and replace.
Step 8.
Reinstall lower shaft with new
dosage piston and turn 1/4
turn to lock.
Step 9.
Screw #7 OUTER CYLINDER
onto body.
Step 7.
Re-install #82 SEAL SPACER
and #16 GASKET.
Step 6.
After replacing #82 SEAL
SPACER and #18 GASKET,
replace #52 UPPER SHAFT. Turn
1/4 turn to lock in place.
↓↓
↓
↓
Step 4.
Remove and clean #16 GASKET
and # 82 SEAL SPACER.
↓
↓
↓

English
English: 13
Routine Maintenance Instructions 2.5% & 5%
Step 1.
Unscrew #7 OUTER CYLINDER
from body.
Step 3.
Replace #44 DOSAGE PISTON thin
lips up. Clean & inspect #14 O-ring
replace if necessary.
Step 2.
Rotate #51 or #52 SHAFT 90°
and remove.
Step 5.
Replace #17 O-ring.
Step 8.
Reinstall lower shaft with new
dosage piston by turning 90°
to lock in place.
Step 9.
Screw #7 OUTER CYLINDER
onto body.
Step 7.
Re-install #16 GASKET and #82
SEAL SPACER
Step 6.
Re-install #52 UPPER SHAFT
and #17 O-ring.
↓
↓
Step 4.
Remove & Clean seal areas #16
& #82.
↓
2.5%
2.5%
5%
5%
2.5%
2.5%
5%
5%

English: 14
Routine Maintenance Instructions 10%
Step 1.
Unscrew #7 OUTER CYLINDER
from body.
Step 3.
Remove #83 SHAFT SEAL
SPACER.
Step 2.
1/4 turn and remove #52 SHAFT,
#16 GASKET and #15 RETAINER.
Step 5.
Replace #83 SHAFT SEAL SPACER.
Step 8.
Re-install #52 SHAFT with #16
GASKET, #15 RETAINER.
Step 9.
Screw #7 OUTER CYLINDER
onto body.
Step 7.
Replace #44 DOSAGE PISTON
thin lips up (towards the top of
the shaft).
Step 6.
Squeeze ears on shaft and
remove #44 DOSAGE PISTON.
↓
↓
Step 4.
Remove #17 O-ring and replace.
↓
↓
↓

English
English: 15
Routine Maintenance Instructions 20%
Step 1.
Unscrew #61 OUTER CYLINDER
from body.
Step 3.
Remove #73 DOSAGE
PISTON GUIDE, clean and
inspect #14 O-ring.
Step 2.
Unscrew to unlock and remove
#93 CAPSCREW.
Step 5.
Unscrew and remove #72 ADAPTER
as well as #68 O-ring, #15 SEAL
RETAINER. Clean and replace if
damaged or worn.
Step 8.
Replace #73 DOSAGE PISTON
GUIDE and #44 DOSAGE
PISTON.
Step 9.
Screw #61 OUTER
CYLINDER onto body.
Step 7.
Reset #68 O-ring and screw
#72 ADAPTER onto body.
Step 6.
Remove and replace #17
O-ring. Re-install #83 SHAFT
SEAL SPACER and #15 SEAL
RETAINER.
↓
↓
Step 4.
Remove #44 DOSAGE PISTON.
↓
↓

English: 16
New Install - Always Pressure Up Slowly (Follow start up on page 9)
Problem Cause Solution
No Clicking
Sound
Fluid not flowing through unit
Are the red plugs at the inlet, outlet and suction tube fitting openings removed?
Is the unit installed backward? The arrow on the unit must point in the
direction of the fluid flow.
Has the new injector been stored for an extended period. If so, submerge the
injector in room temperature water for 24 hours so that the working parts can
reabsorb fluid and swell back to the proper size.
If still not clicking, do not open the upper body. Call Dosmatic Customer
Service.
Fluid flowing through unit
Fluid rate is below or exceeds rated service flow of injector. (See Specifications
page 6).
If below increase flow rate, if above, reduce flow rate.
Operating pressure exceeds maximum limit. Install a pressure reducer valve.
(See Specifications for maximum flow rate page 6).
On/Off Lever in off position. Place the On/Off lever switch to the ON position.
By-Pass Valve not closed. Check and set valve to the OFF position.
Problem Cause Solution
Clicking
Sound
No Suction Of
Solution
Suction tube #25 (#60 - 20%) or
suction tube fitting #11 cracked,
loose, leaking or clogged suction
tube filter.
Check for proper fit, replace and/or clean as necessary.
Dosage piston #44 worn or
installed incorrectly, inner cylinder
#37 (#68 - 1% & #7 - 20%) worn
Replace. Ensure during maintenance replacement that #44 dosage
piston was installed correctly flared-end up.
O-ring retainer #82 (#15 - 10% &
20%) installed incorrectly
Install correctly.
O-ring seat #14 or dosage piston
#44 damaged or worn
Replace, on 0.4% models replace #51 Shaft Assembly.
Check valve #13 (#60 - 20%)
leaking.
Clean & replace as necessary.
Problem Cause Solution
Fluid
Re-filling
Solution Tank
Check valve #13 leaking Check seat area on suction tube fitting #11. Check valve and seal must
fit loose in the suction tube fitting. Clean seal and inside fitting for debris.
Washer seal on #13 is swollen or
chemical attack
Replace with new check valve assembly.
Hose Kit #60 (20%) leaking Replace
Problem Cause Solution
No Clicking
Sound
Main Piston Assembly #9 worn Replace # 9 Main Piston Assembly. Clean fluid filter.
Cover #1 or main body #40 worn
or scored Replace and install or clean fluid filter.
On/Off Lever in off position Place the On/Off lever switch to the ON position.
By-Pass Valve not closed Set Valve to the closed position.
Dirty or plugged inlet filter Ensure mesh size is correct for proper filtration. Clean filter.
#17 Worn or not seated properly Re-seat #17 or replace.
Troubleshooting
Injector in Operation or After Scheduled Maintenance
Problem Cause Solution
Clicking
Sound.
Under
Injecting
#44 Dosage Piston worn Replace, on 0.4% models replace #51 Shaft Assembly.
#37 (#7 - 20%) Inner Cylinder worn Replace.
Unit operates at high-flow and not
at low flow Replace #17 O-ring.
Main Piston Assembly #9 worn Replace # 9 Main Piston Assembly. Clean fluid filter.
Cover #1 or main body #40 worn
or scored Replace and install or clean fluid filter.

English
English: 17
Injector Repair Parts
195720
86
193641
(2x for Heavy Duty) 87 195910
34
190100
1
195912
195914 (Heavy Duty Pin)
85
195700
21
011662UP 20%
011666
9
011011Rem 20% BSP Remote Inj
011010Rem 20% NPT Remote Inj
40 Ordering Information
011012 NPT Threads
011013 BSP Threads
011010 20% NPT Threads
011011 20% BSP Threads
20 212009
Reference # Part # Description
1 190100 Upper Body
9011666
011662UP 20% Motor Piston
20 212009 O-ring
21 195700 Bypass Shaft
34 193641 Cotter Ring
40
011012
011013
011010
011011
011010REM
011011REM
NPT Lower Body
BSP Lower Body
20% NPT
20% BSP
20% NPT Remote Inject
20% BSP Remote Inject
85
195912
195914
(Heavy Duty Pin)
Upper Shaft Pin
86 195720 Mixing Chamber Gasket
87 195910 On/Off Handle

English: 18
Lower end injector & wear parts kits 0.4% PAA:
Lower End
Assembly
Kit A - Wear Parts Kit (dosage piston/
lower shaft assy, and O-ring)
011109K 17, 51
Kit C - Wear Parts Kit (Kit A, inner
cylinder and O-ring)
011110K 12, 17, 37, 51
Kit D - Suction Tube Fitting Assy
(poppet, O-ring, fitting, spring)
011111K 13, 27
Kit E - Wear Parts Kit (Kits C & D, upper
shaft)
011112K 12, 16, 17, 37,
51
Kit G - Lower End Kit, complete (Kit E,
outer cylinder, ratio adjuster, O-ring,
retainer clip, pin, retainer, filter,
solution tube)
011113K 7, 12, 13, 16, 17,
25, 27, 37, 51,
60, 61, 79, 82
Kit H - Motor Piston Assy (upper end kit) 011662S 9, 20, 21
Kit I - Remote Injection Kit 011762 (Viton
011764 (EPDM)
Not Shown
Kit M – Mounting Bracket Kit
(mounting bracket, 4 hex caps & nuts)
011732 54, 55
Manual
Reference
Part # Description of Part
7 190031 Minidos Outer Cylinder
12 212120X O-ring
13 003043K Check Poppet W/Washer
16 195709 Gasket
17 212005K O-ring
25 010028 Suction Tube 1/8" X 3'
27 005218 1/4"OD x 1/8"ID Compression x
3/8" NPT Male
37 195976 Minidos 0.4% Inner Cylinder
51 011008K Minidos 0.4% Shaft Assembly
60 212517W O-ring
61 195874 Minidos 0.4% Ratio Adjuster
79 195224 Interlock Pin
82 195740 Shaft Seal Spacer
82 195740
17 212005K
16 195709
61 195874
60 212517
12 212120X
37 195976
13 003043K
79 195224
7190031
51 011008K
A
27 005218 212516X
Detail A
212021K
25 010028

English
English: 19
Lower end injector & wear parts kits 0.4%:
Lower End
Assembly
Kit A - Wear Parts Kit (dosage
piston/lower shaft assy, and O-ring)
011109V 17, 51
Kit C - Wear Parts Kit (Kit A, inner
cylinder and O-ring)
011110V 12, 17, 37, 51
Kit D - Suction Tube Fitting Assy
(poppet, O-ring, fitting, spring)
011111 10, 11, 13, 91
Kit E - Wear Parts Kit (Kits C & D,
upper shaft)
011112V 10, 11, 12, 13, 16,
17, 37, 51,
Kit G - Lower End Kit, complete (Kit
E, ratio adjuster, O-rings, pin, filter,
solution tube)
011113V 7, 10, 11, 12, 13,
16, 17, 25, 27, 37,
51, 60, 61, 82,
91, 92
Kit H - Motor Piston Assy (upper
end kit)
011662S 9, 20, 21
Kit I - Remote Injection Kit 011762 (Viton
011764 (EPDM)
Not Shown
Kit M – Mounting Bracket Kit
(mounting bracket, 4 hex caps &
nuts)
011732 54, 55
13 011453
27 003072
25 011023
12 212120
7190031
37 195876
79 195224
17 212005
82 195740
16 195709
61 195874
60 212517
51 011008
11
194413
91 193054
195877
10
194416
190202
92 193854
Ref. # Part # Description of Part
7 190031 Minidos Outer Cylinder
10 195877 Minidos 0.4% Spring
11 190202 Suction Tube Fitting, 1/8”
12 212120
*Must specify material
O-ring
13 011453A Check Poppet W/Washer
16 195709 Gasket
17 212005
*Must specify material
O-ring
25 011023 Suction Tube 1/8" X 3'
27 003072 Filter For Suction Tube 1/8"
37 195876 Minidos 0.4% Inner Cylinder
51 011008 Minidos 0.4% Shaft Assy
60 212517W O-ring
61 195874 Minidos 0.4% Ratio Adjuster
79 195224 Interlock Pin
82 195740 Shaft Seal Spacer
91 193054 Seal, Check Valve
92 193854 Hose Nut 1/8"

English: 20
Lower end injector & wear parts kits 1%:
25 010025
27 011017
12 212120
82 195740
16 195709
52 190030
51 011005
61 195426
7190011
26 195761
37 195405
68 190750
79 195224
17 212005
60 212517
63 212516
13 011453A 10 194418
194415
80
194413
194417
11
194416
71 194414
12 212120
Lower End
Assembly
Kit A – Wear Parts Kit
(dosage piston, O-ring)
011071V 17, 51
Kit C – Wear Parts Kit (Kit
A, inner cylinder, O-ring)
011072V 17, 51, 63, 68
Kit D – Suction Tube
Fitting Assy (poppet,
O-ring, spring, fitting)
011046V 10, 11, 12, 13, 80
Kit E – Wear Parts Kit (Kits
C & D, upper shaft)
011073V 10, 11, 12, 13,
16, 17, 51, 52, 63,
68, 80
Kit G – Lower End Cylinder
Kit (Kit E, outer cylinder,
ratio adjuster, O-rings, pin,
filter, solution tube)
011068V 7, 10, 11, 12, 13,
16, 17, 25, 26, 27,
37, 51, 52, 60, 61,
63, 68, 71, 79,
80, 82
Kit H – Motor Piston Assy 011662S 9, 20, 21
Kit I - Remote Injection Kit 011762 (Viton)
011764 (EPDM)
Not Shown
Kit M – Mounting Bracket
Kit (mounting bracket, 2
pins
011732 54, 55
Manual
Reference
Part # Description of Part
7 190011 Cylinder, Outer
10 194418H Spring
11 194417 Suction Tube Fitting
12 212120
*Must specify material
O-ring
13 011453A Check Poppet W/Washer
16 195709 Gasket
17 212005
*Must specify material
O-ring
25 010025 Suction Tube, ¼” X 5’
26 195761 Anti Lock Gasket
27 011017 Filter For Suction Tube, ¼” Id
37 195405 Inner Cylinder
51 011005 Lower Shaft Assembly
52 190030 Shaft, Upper
60 212517W O-ring
61 195426 Ratio Adjuster
63 212516
*Must specify material
O-ring, Inner Cylinder
68 190750 Inner Cylinder For #37
71 194414 Nut, Suction Tube Fitting
79 195224 Interlock Pin
80 194415 Twistlock
82 195740 Shaft Seal Spacer