dosatron D 25 RE 2 - Troubleshooting Guide; Motor Piston Troubleshooting; Injection System Troubleshooting

©
DOSATRON INTERNATIONAL / 20
©
DOSATRON INTERNATIONAL / 20
Troubleshooting
SYMPTOM CAUSE SOLUTION
Motor piston
DOSATRON does
not start or stops
Piston stalled. Reset piston, by hand.
Air has not been
bled from unit.
Bleed air from unit, by
bleed button.
Maximum flow
exceeded.
1. Reduce flow, restart
unit.
2. Unscrew the top cap.
Take off the piston
and check piston
valves seals to ensure
correct position.
Motor piston is
damaged.
Return unit to your
service center for repair.
Injection
Water flowing back
into concentrate
container.
Contaminated,
worn, or missing
check valve parts.
Clean or replace it.
No suction of
concentrate.
The piston motor
has stopped.
See Motor piston section.
Air leak (inlet) in the
suction tube.
Check the tightness bet
ween nut and suction hose.
Blocked suction
tube or clogged
strainer.
Clean or replace it.
Missing or worn
suction check valve
seal.
Clean or replace it.
Missing or worn
plunger seal.
Clean or replace it.
Worn injection stem Replace it.