dosatron D25RE2 User manual

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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MAINTENANCE MANUAL
MAINTENANCE MANUAL
D25RE2
0.2 to 2%
1:500 to 1:50

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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200 mesh /80
micron filter
Union ball
check/check
valve or
water
hammer
arrestor
Concentrate
Inlet Outlet
Optional accessories:
•Pressure regulator
•Solenoid valves
•Water meter
•Flow restrictor
STANDARD INSTALLATION
STANDARD INSTALLATION
Optional
accessories

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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MAIN MENU
MAIN MENU
Click on a specific chapter
or
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•CHAPTER 1 REMOVING THE DISPENSER FROM INSTALLATION
•CHAPTER 2 DISASSEMBLING THE DISPENSER
•CHAPTER 3 REASSEMBLING THE DISPENSER
•CHAPTER 4 PISTON MAINTENANCE
•CHAPTER 5 AIR BLEED MAINTENANCE
•CHAPTER 6 BY-PASS MAINTENANCE
•CHAPTER 7 TROUBLESHOOTING GUIDE

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SPECIFICATIONS
SPECIFICATIONS
D25RE2
D25RE2
Injection Range:
•1:500 to 1:50 1:500 to 1:50 - -0.2 to 2% 0.2 to 2%
Water Flow Range:
•0.05 to 11 GPM 0.05 to 11 GPM
Operating Water Pressure:
•4.3 to 85 PSI 4.3 to 85 PSI
Maximum Water Temperature:
•104 104° °F F – –40 40° °C C
Note:
Note: Normal safety precautions should be practiced when Normal safety precautions should be practiced when
working with chemicals and equipment.
working with chemicals and equipment.

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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REMOVING THE DISPENSER FROM INSTALLATION
REMOVING THE DISPENSER FROM INSTALLATION
Return to Main Menu
CHAPTER 1
CHAPTER 1
D25RE2
0.2 to 2%
1:500 to 1:50

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REMOVING THE DISPENSER FROM INSTALLATION
REMOVING THE DISPENSER FROM INSTALLATION
Unscrew the suction tube nut
and remove the hose.
After turning off the water and
relieving the pressure on the unit,
unscrew the dispenser inlet/outlet
couplings and allow it to drain.

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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D25RE2
0.2 to 2%
1:500 to 1:50
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
CHAPTER 2
CHAPTER 2

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DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
Unscrew and remove the lid.

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Place the dispenser upside-down on a
table and remove the 4 dosing assembly
retaining screws.
Use a #2 Phillips screwdriver.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER

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Pull the injection stem
assembly out of the body, and
let the solution drain out of it.
Caution
Caution: Stem may be full of
undiluted chemical. Be aware of
hazardous materials and take
the necessary precautions for
protection.
WATCH OUT FOR SPLASHING!
WATCH OUT FOR SPLASHING!
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Grab the valve support and pull the piston out of the body, at
the same time, push the plunger up.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Unscrew and
remove the barbed
fitting.
Unscrew and
remove the conical
nut.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
Dosing assembly
Dosing assembly - -disassembly disassembly

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Remove the
anti-friction ring.
Dosing assembly
Dosing assembly - -disassembly disassembly
Unscrew and
remove the
adjusting nut
from the
sleeve.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER

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Remove the injection stem from the top
of the sleeve.
Gently remove the sleeve O-ring.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
Dosing assembly
Dosing assembly - -disassembly disassembly

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Gently push the check valve out of the
injection stem with a pencil or similar
object. Do not scratch the inside of the
injection stem.
Gently remove the injection stem O-ring.
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
Dosing assembly
Dosing assembly - -disassembly disassembly

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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When disassembly of the Dosatron unit is complete, soak it in lukewarm soapy
water. A soft bristled brush may be used to break up residue.
Change seal kit every 12 months.
Seal kit part # ED252 includes:
J009 - Plunger seal
PJ121 - Injection stem assembly
J024 - Injection sleeve O-ring
MPDI122 - Check valve assembly
J051 - Check valve seal
CLEANING & MAINTENANCE PROCEDURE
CLEANING & MAINTENANCE PROCEDURE
DISASSEMBLING THE DISPENSER
DISASSEMBLING THE DISPENSER
J009

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Return to Main Menu
D25RE2
0.2 to 2%
1:500 to 1:50
REASSEMBLING THE DISPENSER
REASSEMBLING THE DISPENSER
CHAPTER 3
CHAPTER 3

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REASSEMBLING THE DISPENSER
REASSEMBLING THE DISPENSER
Dosing assembly
Dosing assembly
Replace the O-ring on the dosing stem.

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Dosing assembly
Dosing assembly
Reinsert the injection stem into the injection sleeve. Make sure that the long groove
in the injection stem aligns with the tooth inside the injection sleeve.
REASSEMBLING THE DISPENSER
REASSEMBLING THE DISPENSER

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DOSATRON INTERNATIONAL, INC. •800-523-8499
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Replace the sleeve O-ring.
Dosing assembly
Dosing assembly
REASSEMBLING THE DISPENSER
REASSEMBLING THE DISPENSER