dosatron D 20 Manual De Instrucciones página 47

CHANGING SEALS IN THE INJECTION ASSEMBLy (with pressure off)
Frequency : once per year.
IMPORTANT ! Use no tool or metallic utensils
ADVICE: Before dismantling any part of the injection assembly it is advi-
sable to operate the Dosatron, injecting clean water so as to rinse through
the injection system. In this way, risks of contact with concentrated solutions
in the injection assembly are minimized. During any such intervention, wear
protective eyewear and gloves !
METHOD OF REMOVING SEAL
Fig. 14 : Between finger and thumb, pinch the component and the seal ;
push towards one side to deform the seal.
Fig. 15 : Increase the deformation to grip the part of the seal thus exposed
and pull it out of its groove. Clean the seal seating without any tools.
Refitting is done by hand. It is very important that the seal is not twisted
once in place as this would impair its efficiency.
Fig. 14
Fig. 15
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