Maintenance; Recommendations; Cleaning The Motor Piston - dosatron D132 GREEN LINE Série Manuel D'utilisation

Maintenance

RECOMMENDATIONS

1 - When using soluble products to be made
up into solutions, we recommend the periodic
dismantling of the entire dosing part (see : §
CLEANING AND REFITTING THE SUCTION
VALVE, § CHANGING SEALS IN THE
INJECTION ASSEMBLY).
Thoroughly rinsing all the elements of the dosing
part with water and re-assembling them after
having previously lubricated the seal
(Fig. 5) with a silicone lubricant, in the case of
difficulty in re-fitting.
2 - Before putting the DOSATRON into operation
after a non-use period, remove the motor piston
and soak it into lukewarm water
< 104° F [40° C] overnight. This helps to dissolve
any deposits which may have dried onto the
piston motor.
HOW TO DRAIN THE DOSATRON (in case of freezing temperature)
- Turn off the water supply and let the
pressure drop to zero.
- Open the D132GL unit (Fig. 6).
- Remove the injection assembly, see §
CHANGING THE MOTOR PISTON.
Fig. 6
- Remove the bell and the motor piston.
- Disconnect the water inlet and outlet fittings.
- Remove the lower pump body from the
mounting bracket and empty any remaining
water.
- The DOSATRON can now be reassembled,
having first cleaned the seal.
- Close the D132GL unit (Fig. 7).
Fig. 7
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DOSATRON INTERNATIONAL S.A.S / 25
O-ring
Fig. 5
FITTING THE SUCTION TUBE
If the DOSATRON has already been used, please imperatively refer to §
PRECAUTIONS.
- Unscrew the nut (Fig. 8) at the bottom of the injection assembly and put it
onto the tube.
- Push the tube onto the barbed fitting as far as it will go and screw on the
nut by hand (Fig. 9).
CLEANING THE MOTOR PISTON (with pressure off)
Fig. 14
%
5
Fig. 13
%
5
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DOSATRON INTERNATIONAL S.A.S / 26
Fig. 8 Fig. 9
- Turn off the water supply and allow
the pressure to drop to zero.
- Open the D132GL unit (Fig. 6).
- Unscrew and remove bell-housing by
hand (Fig. 13).
- Remove the motor piston (Fig. 14) by
pulling it up.
- Rod and plunger piston are fixed
to the motor piston and taken out
simultaneously.
- Change and reassemble in the
reverse order to the above.
- Refit the bell-housing (take care not to
damage its seal) and tighten by hand.
- Close the D132GL unit (Fig. 7).