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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 6:
If you don’t see liquid moving up the tube or you don’t feel
suction on your finger, turn the water off. Press the air bleed button
on the lid a couple times to release the pressure.
Step 5:
If you feel suction, just cut a half inch off the top of the
hose and reattach. You should see the liquid begin moving up the
suction tube.
Step 4:
Check to see if you feel suction on your finger.
D25RE2 Troubleshooting - Part 1