dosatron D8RE3000 Troubleshooting Manual Download Page 7

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Page 7

1-800-523-8499 • www.dosatronusa.com

Proper protection, such as gloves, eyewear, and aprons, are recommended when disassembling a Dosatron.

D8RE3000 Troubleshooting - Part 2

Step 3:

Grasp the white threaded barb and pull the check valve

assembly straight out. It might come out in two pieces. Set the

unit aside.

Step 2:

Unscrew and remove the check valve nut.

If your Dosatron injector is pushing water down into the

concentrate tank, it’s time to investigate the check valve.

Step 1:

Remove the hose nut and set it aside.

This D8RE3000 - 40 GPM Troubleshooting Part 2 will cover: The injector is clicking but

is pushing water down into the concentrate tank.

Summary of Contents for D8RE3000

Page 1: ...bleshooting Page 1 D8RE3000 Troubleshooting To troubleshoot your D8RE3000 injector you will need a strap wrench Part TOOL01 needle nose pliers and a utility knife NOTE It is best to perform this maint...

Page 2: ...hose Reposition the ferrule to original position Step 2 If there is no suction unscrew and remove the hose nut If your Dosatron is clicking but not drawing the concentrate it could be as simple as the...

Page 3: ...on the bell housing a few times to release the pressure Step 5 After you reinstall the suction hose turn on the water You should start to see the liquid begin moving up the hose If the liquid is not m...

Page 4: ...are recommended when disassembling a Dosatron D8RE3000 Troubleshooting Part 1 Step 9 Then pull the injection stem straight out of the injector s body and set aside Step 8 Unscrew the injection stem nu...

Page 5: ...straight and that the seal is free of nicks scratches or wear NOTE If the plunger or seal is damaged or you don t remember the last time you changed it just replace the plunger assembly Part 8PJ074 no...

Page 6: ...ly NOTE If the hose comes off easily you may need to cut another half inch off reset the ferrule and reattach the nut Test the unit by slowly turning the water on The unit should begin drawing the con...

Page 7: ...check valve assembly straight out It might come out in two pieces Set the unit aside Step 2 Unscrew and remove the check valve nut If your Dosatron injector is pushing water down into the concentrate...

Page 8: ...e water from going back into the concentrate tank Step 5 To reassemble place the new check valve assembly into the top of the barb Reinstall the check valve and the check valve nut Hand tighten Step 4...

Page 9: ...and pull it straight out Step 2 Use the strap wrench Part TOOL01 to loosen the bell housing Unscrew remove and set it aside If the Dosatron injector is not clicking or is stalling at low flow we need...

Page 10: ...or have deep scratches the piston shell Part 8PC002 needs to be replaced If either is loose the piston shell needs to be replaced To test the upper flange invert the piston and insert it squarely hal...

Page 11: ...housing hand tighten We hope this document has been helpful in troubleshooting your Dosatron D8RE3000 40 GPM Injector For more information give us a call at 1 800 523 8499 or visit us online at www do...