dosatron D25RE09 Betriebsanleitung
Page 1
800-523-8499
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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 3: Check to see if you feel suction on your nger.
Step 2: If the unit is still not drawing the concentrate, unscrew and
remove the hose nut and hose.
D25RE09 - Troubleshooting - Part 1
This D25RE09 - 11 GPM Troubleshooting Part 1 will cover: The injector is clicking, but
not drawing the concentrate.
Scan the QR code to
watch our D25RE09 -
Troubleshooting video.
NOTE: To service your D25RE09 you will need a strap wrench
(Part #: TOOL01) and a Phillips head screwdriver.
Step 1: If your Dosatron is clicking but not drawing the
concentrate, it could be as simple as the strainer is plugged
with debris. Take a look at the strainer, if it’s clogged just clean it.
Then, turn on the water and re-test your Dosatron unit.
P421 Piston shell
J020 Push rod o-ring
JDI098 Injection stem o-ring
M238 Actuator springs
JDI106 Plunger seal
PJDI026 Check valve assembly
Page 2
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D25RE09 - Troubleshooting - Part 1
Step 6: Use the strap wrench to loosen the lid. Then, remove it
and set aside.
Step 5: To do this, turn the water off and press the air bleed button
on the lid a few times to release the pressure.
Step 4: If you feel suction, cut a half-inch off the top of the hose
and reattach it. But, if the hose is cracked, rigid, or looks really
old just replace it.
After you reinstall the suction hose, you should see the liquid
begin moving up the hose. If you don’t see liquid moving up the
hose after a minute or so, or you didn’t feel suction on your nger,
we need to check the plunger seal.
Page 3
800-523-8499
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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 9: To repace the seal, pinch it and roll it off of the plunger.
Install the new seal into the groove.
Step 8: Take a close look at the plunger seal (Part #: JDI106) for
nicks, scratches, or wear. If you see damage, or don’t remember
the last time you changed the seal, just replace it now.
D25RE09 - Troubleshooting - Part 1
Step 7: Grasp the white valve support and pull the piston straight
out of the body. Set the body aside.
Page 4
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 11: Replace the lid hand tight. Slowly turn the water on and
the unit should begin to click. It should be drawing the concentrate.
D25RE09 - Troubleshooting - Part 1
Step 10: Carefully insert the piston back into the body.
Page 5
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 3: Grasp the white barb and pull the check valve assembly
straight out. It usually comes out in two pieces.
Step 2: Unscrew and remove the check valve nut.
Step 1: It’s time to investigate the check valve. To do this, remove
the hose nut and hose. Set them aside.
D25RE09 - Troubleshooting - Part 2
This D25RE09 - 11 GPM Troubleshooting Part 2 will cover: The injector is pushing
water down into the concentrate tank.
Page 6
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 4: The top part that includes the spring is one piece and
shouldn’t be disassembled.
D25RE09 - Troubleshooting - Part 2
Step 5: To investigate the check valve, carefully lift the cone from
the retainer. Look at the bottom side of the cone.
Step 6: Then, carefully lift the retainer from the seal. If you see
anything lodged or stuck, remove it.
If the spring is deformed or stretched, you will need to replace the
complete check valve assembly.
Page 7
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 9: Now, thread the suction hose nut onto the hose. Slide it
onto the barb, and hand tighten the nut.
This should stop the water from going back into the concentrate
tank.
Step 8: Press it into the stem as shown. Hand tighten the check
valve nut.
Step 7: To re-assemble, place the check valve assembly
(Part #: PJDI026) into the top of the barb.
D25RE09 - Troubleshooting - Part 2
Page 8
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 2: Use the strap wrench to loosen the lid. Then, remove and
set it aside.
Step 1: Turn the water off and press the air bleed button on the
top of the lid a few times to release the pressure.
D25RE09 - Troubleshooting - Part 3
This D25RE09 11 - GPM Troubleshooting Part 3 will cover: The injector isn’t clicking.
Step 3: Grasp the white valve support and pull the piston straight
out of the body.
Page 9
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 5: Check the two actuator springs (Part #: M238) on the
bottom. If they are broken or missing, just replace them.
Step 4: Inspect the white valve support on the top and press the
pushrod down.
D25RE09 - Troubleshooting - Part 3
Step 6: You can visually inspect the upper and lower anges on
the piston shell. If they are worn or have deep scratches, the
piston shell (Part #: P421) and push rod o-ring (Part #: J020)
need to be replaced.
Page 10
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 8: To replace the piston shell, use a small tip Phillips
screwdriver and remove the valve support screw.
Step 7: Also, check the piston shell’s t inside the body. To do this,
invert the piston and slide it into the body. It should be a snug t.
If it feels loose, the piston shell (Part #: P421) and push rod o-ring
(Part #: J020) need to be replaced.
D25RE09 - Troubleshooting - Part 3
Step 9: Remove the plastic retainer.
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