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QUICK TIPS:
To maintain a long service life for your Dosmatic injector:
(Part #’s refer to diagrams on following pages)
1. Always cover solution container and keep it clean.
2. Always use clean water.
3. Always filter inlet water.
4. Always keep solution filter (#27 or #60) 2” from bottom of container.
Trouble-shooting your Dosmatic injector:
Injectors should make a clicking sound when in operation. If the unit is not clicking, contact your
authorized Dosmatic repair distributor or return the unit to Dosmatic USA, Inc. If the unit is click-
ing, but is not pulling solution, please inspect the lower end of the injector (see lower end dia-
grams).
Exterior Inspection:
1. Inspect and clean filter (#27 or #60).
2. Inspect the suction tube (#25 or #60) for cracks. Replace if holes exist.
3. If injector still does not pull solution, please proceed to steps 4-7.
Changing the suction tube fitting
4. Remove pin (#79) and carefully pull out the inner cylinder (#7).
5. Unscrew the suction tube fitting (#11) from the inner cylinder (#7).
6. Clean and rinse suction tube fitting assembly (#11). Replace any damaged parts.
7. If injector still does not pull solution, please proceed to steps 8-12.
How to replace wear parts
8. Unscrew the external cylinder (#67), separating it from the body of the injector.
9. Take hold of the shaft (#51) and turn it 90 degrees in any direction to release it. Pull shaft from
its housing.
10. If you have the 0.4% model you must replace the entire shaft assembly. For all other models
remove the dosage piston (#44) by depressing the two “ears” of the shaft (#51) simultaneously and
removing the piston upwards. Remove dosage piston by pulling up. Clean and inspect o-ring (#14).
Replace by sliding a new dosage piston(#44) from top to bottom of the shaft until you hear a click.
The translucent openings (thinner lips) should be on top.
11. Clean, dry and inspect inside the inner cylinder (#7) for scratches or cracks. Replace if needed.
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