dosatron D45RE15 Troubleshooting Manual

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

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

Step 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

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

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

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).

D45RE15 Troubleshooting - Part 2 Step 6: Now, position 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.

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.

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.

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.

D45RE15 Troubleshooting - Part 3 Step 7: You can check the piston shell two 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 replaced (Part #: MPDI170).

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.

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.

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.

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.

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.

D45RE15 Troubleshooting - Part 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.

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.