Changing The Motor Piston; Changing The Injection Seals - dosatron D 45 RE 3000 Manual De Utilización

CHANGING THE MOTOR PISTON (with pressure off)
- Turn off the water supply and allow the pressure to drop to zero.
- Take off the suction hose (Fig. 19 A), and the external injection hose for IE
model.
- Unscrew the injection part by hand or by means of a long cruciform screw-
driver, according to the dispenser type (Fig. 19 B).
- Pull downwards to remove the injection part (Fig. 19 C).
Fig. 19
A B C
Model
D 45 RE 8/IE
- Unscrew the pump body nut by hand (Fig. 20-C) and disassemble pump
body.
- Remove the motor piston (Fig. 20-M) by pulling it up.
- Change and reassemble in the reverse order to the above. To do this, insert
the motor piston partially into the lower pump body (step 1 ) (carefully insert
the lips of the motor piston) and partially into the upper pump body (step 2 ),
taking care not to damage the pump body seal (Fig. 20-N), then assemble.
- Step 3 : Tighten the pump body nut by hand.
- Refit the injection part assembly, but not without having cleaned or replaced
its sealing (Fig. 20-N).
Steps 1 to 3 in (Fig. 10) must be imperatively respected each time the motor
piston is handled.
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A B C
Models
D 45 RE 1.5/IE - D 45 RE 3/IE
D 45 RE 3000
C
Fig. 20

CHANGING THE INJECTION SEALS

- Change the seals, the suction valve and the barbed fitting.
- To do this, please refer to the drawings of the different models at the end
of this manual.
- Change the seals once a year.
- Before dismantling the unit, it is advisable to operate the DOSATRON by
injecting clean water, in order to avoid any contact with concentrated
solutions.
- Close the water supply and let the pressure drop to zero.
- Take off the suction hose of product, remove the injection assembly as des-
cribed in the previous chapter.
- Pull downwards to remove the injection assembly.
- For IE-models, also remove the external injection hose.
- Re-assemble in the reverse order to the above.
© DOSATRON INTERNATIONAL / 43
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