dosatron D14MZ10 Operating instructions

Page 1
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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 there is still no suction, but the Dosatron unit is clicking,
turn the water on. Unscrew and remove the suction hose nut or
clamp and hose.
D14MZ10 Troubleshooting - Part 1
This D14MZ10 - 14 GPM Troubleshooting - Part 1 will cover: The Injector is
not drawing the concentrate, but is clicking.
Scan the QR code to
watch our D14MZ10 -
Troubleshooting video.
Step 1: Take a look at the strainer. If it is clogged just clean it out
and retest your Dosatron unit.
NOTE: To service your D14MZ10 you will need a strap wrench
(Part #: TOOL01) and a small at head screw driver.

Page 2
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 6: Press the air bleed button on the bell housing a few times
to release the pressure.
Step 5: After you reinstall the suction hose, you should start to see
the liquid begin moving up the hose. If you don’t see liquid moving
up the hose or you don’t feel suction on your nger, turn the water
off.
D14MZ10 Troubleshooting - Part 1
Step 4: If you feel suction, just cut an inch or so off the top of the
hose and reattach. If the hose is cracked, ridged, or looks really
old just replace it.

Page 3
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 9: Unscrew the injection stem nut.
Step 8: Remove the suction hose. Set both aside.
D14MZ10 Troubleshooting - Part 1
Step 7: Unscrew the suction hose nut or clamp.

Page 4
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 12: Twist the plunger a quarter turn counter clockwise to
disconnect. Set the unit aside.
Step 11: Take a close look at the plunger seal for nicks,
scratches, or wear. If you see damage or don’t remember the
last time you changed the seal, just replace the plunger seal
(Part #: JDI123) now.
D14MZ10 Troubleshooting - Part 1
Step 10: Pull the injection stem straight out from the body of the
injector and set aside.

Page 5
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 15: Reconnect the plunger by aligning the top of the plunger
with the retainer.
Step 14: Install the new plunger seal into the groove on the
plunger.
D14MZ10 Troubleshooting - Part 1
Step 13: Using a small at head screwdriver, carefully remove the
plunger seal (Part #: JDI123) by rolling it out of the groove.

Page 6
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 1
Step 18: Re-install the injection stem nut, hand tight.
Step 17: To reinstall the injection stem, align the notches in the
lower part of the blue body with the teeth on the top of the injection
stem assembly.
Step 16: Twist it a quarter turn clockwise to lock.

Page 7
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 1
Step 20: After you reinstall the suction hose, your injector should
now be drawing the concentrate.
Step 19: Set the dilution rate to your desired setting.

Page 8
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 3: Grab the barb and pull the check valve assembly straight
out. Set the unit aside.
Step 2: Unscrew and remove the check valve nut.
Step 1: Remove the hose nut or clamp and hose and set aside.
D14MZ10 Troubleshooting - Part 2
This D14MZ10 - 14 GPM Troubleshooting Part 2 will cover: If your injector is pushing
water down into the concentrate tank but is clicking.

Page 9
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 2
Step 6: Inspect all of the check valve parts. If they are dirty, you
may be able to soak, brush off, and reinstall.
NOTE: If you see damage or if you don’t remember the last time
you changed these parts, just replace them now.
Step 5: Remove the spring and cone.
Step 4: To inspect the check valve parts, hold the assembly
and twist the white top guide a quarter turn counter clockwise
to remove.

Page 10
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www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 2
Step 9: Position the top guide over the shaft.
Step 8: Slide the spring over the shaft.
Step 7: Insert the cone into the top of the barb.

Page 11
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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 2
Step 12: You can now reinstall the check valve assembly
into the stem.
Step 11: Give it a tug to make sure everything is in position.
Step 10: Align the guide and twist it a quarter turn clockwise
to lock.

Page 12
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www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 2
Step 15: Slide it onto the barb and hand tighten the nut or
clamp.This should stop the water from going back into the
concentrate tank.
Step 14: Thread the suction hose nut or clamp onto the hose.
Step 13: Reinstall the check valve nut.

Page 13
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 3: Unscrew, remove and set aside.
Step 2: Use the strap wrench to loosen the bell housing.
Step 1: Turn the water off and press the air bleed button a few
times to release the pressure.
D14MZ10 Troubleshooting - Part 3
This D14MZ10 - 14 GPM Troubleshooting Part 3 will cover: The injector is not clicking.

Page 14
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 6: Another way to check the anges is by doing a t test. To
test the upper ange, invert the piston and insert it into the blue
bell housing.
NOTE: It should t snugly.
Step 5: Visually inspect the upper and lower anges on the
piston shell.
Step 4: Grasp the piston and pull it straight out. Set the
body aside.

Page 15
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 9: To replace the upper ange, (Part #: PDI643) grasp and
twist it counter clockwise.
Step 8: Insert the piston into the body. It should be a snug t.
NOTE: If either is loose, the anges need to be replaced.
Step 7: To test the lower ange, twist the plunger a quarter turn
counter clockwise and remove.

Page 16
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 12: Press it down into place and twist clockwise until it locks.
Step 11: To install the new ange, align the tooth inside the ange
with the notch in the piston shell.
Step 10: Remove by lifting straight up.

Page 17
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 15: To install the new ange, align the tooth inside the ange
with the notch in the piston shell.
Step 14: Remove by lifting straight up.
Step 13: To replace the lower ange, (Part #: PDI644)
grasp and twist it counter clockwise.

Page 18
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 18: To reinstall the plunger, align the top with the retainer.
Step 17: Twist clockwise until it locks.
Step 16: Press it down into place.

Page 19
800-523-8499
www.dosatronusa.com
Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D14MZ10 Troubleshooting - Part 3
Step 21: Reinstall the blue bell housing, hand tight.
Step 20: Place the piston back into the body.
Step 19: Twist it a quarter turn clockwise to lock.
To learn more, scan the QR codes below for more information
Scan the QR code
to go to Dosatron’s
video page.
Scan the QR code
to go to Dosatron’s
YouTube Channel.