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800-523-8499

www.dosatronusa.com

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

Step 3:

 You should see the liquid begin moving up the suction 

hose. If you don’t see liquid moving up the hose or you didn’t 

feel suction on your finger, turn the water off. Open a valve 

downstream to release the pressure. 

Step 2:

 Then, check to see if you feel suction on your finger.  

If so, just cut 1/2” off your suction hose and reattach. 

NOTE: 

To service your Dosatron D45RE15, you will need a strap 

wrench, a # 1 and 2 phillips head screw driver, a flat blade screw 

driver and needle nose pliers. 

Step 1: 

To begin, make sure the strainer is clear of debris. While 

the unit is still installed, turn the water on. Unscrew and remove 

the suction hose nut and hose.   

D45RE15 Troubleshooting - Part 1

This D45RE15 Troubleshooting will cover: The injector is clicking, but not drawing 

solution or liquid is going down into the stock tank.

Scan the QR code to 

watch our D45RE15 - 

Troubleshooting video.

TOOL-

KIT

Tool Kit

P170

Check valve spring

J051

Check valve seal

M072

Check valve cone

M221

Actuator Springs (2)

TOOL01 Strap Wrench

Содержание D45RE15

Страница 1: ...ch NOTE To service your Dosatron D45RE15 you will need a strap wrench a 1 and 2 phillips head screw driver a flat blade screw driver and needle nose pliers Step 1 To begin make sure the strainer is clear of debris While the unit is still installed turn the water on Unscrew and remove the suction hose nut and hose D45RE15 Troubleshooting Part 1 This D45RE15 Troubleshooting will cover The injector i...

Страница 2: ... recommended when disassembling a Dosatron Step 6 Pull the injection stem assembly straight down and out of the lower housing Step 5 Now unscrew the four screws around the injection sleeve Step 4 Unscrew the suction hose nut and remove the suction hose Set both aside D45RE15 Troubleshooting Part 1 ...

Страница 3: ...p 9 If you see damage or don t remember the last time you changed the plunger seal consider changing the seal Part J009 now To change the plunger seal pinch and roll it off of the plunger Step 8 Take a close look at the plunger seal for knicks scratches or ware Step 7 Grasp the plunger and pull it straight down D45RE15 Troubleshooting Part 1 ...

Страница 4: ...ended when disassembling a Dosatron Step 12 Hand tighten the screws carefully Step 11 To reinstall the injection stem slide it into the lower housing and align the four screws and the metal retainer into the body Step 10 Install the new seal into the groove onto the plunger D45RE15 Troubleshooting Part 1 ...

Страница 5: ...ear and aprons are recommended when disassembling a Dosatron Step 13 Now thread the suction hose nut onto the hose slide the hose onto the barb and hand tighten the nut Slowly turn the water on and your injector should now be drawing the concentrate D45RE15 Troubleshooting Part 1 ...

Страница 6: ...osatron D45RE15 Troubleshooting Part 2 Step 2 Unscrew and remove the check valve barb Step 1 If your injector is pushing water down into the concentrate tank it s time to investigate the check valve To do this remove the hose nut and hose and set aside Step 3 Remove the check valve seal Part J051 cone Part M072 and spring Part P170 ...

Страница 7: ...tion the new check valve seal with the groove side up inside the check valve barb Step 5 Insert the new check valve spring into the new cone and press it into the stem Step 4 Inspect all the check valve parts If they are dirty you may be able to soak brush off and reinstall If you see damage or you don t remember the last time you changed these parts now is a good time to replace them ...

Страница 8: ...and aprons are recommended when disassembling a Dosatron D45RE15 Troubleshooting Part 2 Step 9 Slide it onto the barb and hand tighten the nut This should stop the water from dripping back into the concentrate tank Step 8 Thread the suction hose nut onto the hose Step 7 Hand tighten ...

Страница 9: ...ecommended when disassembling a Dosatron D45RE15 Troubleshooting Part 3 Step 2 Using the strap wrench loosen the body nut and remove Step 1 Unscrew and remove the suction hose nut and hose Step 3 Pull the lower housing straight down This D45RE15 Troubleshooting will cover The injector isn t clicking ...

Страница 10: ...ng a Dosatron D45RE15 Troubleshooting Part 3 Step 5 Inspect the white valve support on the bottom Step 4 Lift the piston up and out of the lower housing Set the lower housing aside Step 6 Press the push rod down and press the two actuator springs Part M221 on the top If they are broken or missing they will have to be replaced ...

Страница 11: ...ways First by inspecting the upper and lower flanges to see if they are worn or have deep scratches Step 8 The second test is to check the piston shell s fit inside the housing To do this slide the piston into the upper housing It should be a snug fit Step 9 Now slide the piston into the lower housing It should also be a snug fit If it feels loose or it is worn the piston shell needs to be replace...

Страница 12: ... aprons are recommended when disassembling a Dosatron D45RE15 Troubleshooting Part 3 Step 11 Then remove the four screws around the plunger rod Step 10 To replace the piston shell use the 1 screw driver and remove the valve support screw and plastic retainer Step 12 Press the push rod up ...

Страница 13: ...embling a Dosatron D45RE15 Troubleshooting Part 3 Step 14 Next remove the four screws in the center of the piston shell to release the actuator assembly Step 13 Pry the valve support off of the inlet valve with a flat blade screw driver and set aside Step 15 Pull the actuator assembly out and discard the old piston shell ...

Страница 14: ...nded when disassembling a Dosatron D45RE15 Troubleshooting Part 3 Step 17 Then position the actuator assembly in the shell as shown and hold firmly Step 16 Using the needle nosed pliers position the four screws in the center of the new piston shell Step 18 Now hand tighten the four screws in a star pattern ...

Страница 15: ...ded when disassembling a Dosatron D45RE15 Troubleshooting Part 3 Step 20 Reinstall the valve support by sliding it onto the inlet valve Step 19 Press the white plastic portion of the actuator side by side If there is movement retighten the screws Step 21 Next position the retainer and hand tighten the screw ...

Страница 16: ...assembling a Dosatron D45RE15 Troubleshooting Part 3 Step 23 Carefully hand tighten them in a star pattern Step 22 Then reinstall the four screws in the black plastic retainer and align the pin in the plunger rod as shown Step 24 Test the piston by pressing the push rod from the top and bottom It should click each time ...

Страница 17: ...art 3 Step 26 Carefully slide the piston into the lower housing about half way Note This step is very important Inspect the large o ring in the groove on the top of the lower housing Step 25 To finish up make sure the push rod is in the down position Important Step 27 Carefully press the piston into the upper housing Align the housing and hand tighten the body nut ...

Страница 18: ... D45RE15 Troubleshooting Part 3 Step 29 Slide it onto the barb and hand tighten the nut Step 28 Thread the suction hose nut onto the hose Step 30 Slowly turn the water on and your injector should now be clicking and drawing the concentrate Scan the QR code to go to Dosatron s video page Scan the QR code to go to Dosatron s YouTube Channel ...

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