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6.10
Fluid pump set maintenance
[ref. figure on page 31]
1. Dip all components in the cleaning liquid and clean them carefully
2. Make sure the rod (41) and the suction tube (54) are not damaged. If they show deep scratches in the
sliding area, replace them.
3. Check that the valve holder set (53) and the valve adaptor set (58) are not damaged, especially in the
area in touch with the ball. If any anomaly is found, replace them.
4. Whenever the pumping unit is completely disassembled, it is advisable to replace the following compo-
nents.
- UPPER V PACKING SET
(45)
- LOWER V PACKING SET
(49)
- BALL
(51)
- BALL
(57)
Moreover, check the wear conditions of all the other components and replace them, if necessary.
6.11
Fluid pump set re-assembly
Reverse the above mentioned procedure bearing in mind the following points:
1. Adjust the lower packing in order to obtain a “smooth sliding movement of the suction tube”.
NOTES:
a) use of new V packing : to obtain the maximum efficiency of the multi spray unit, we recommend
adjusting the V packing to obtain a distance of 0.2 –0.3 mm between the adjusting nut and the
lower female adaptor; [ref. figure a].
b) use of partially worn V packing : the V packing might be worn in the area which comes in contact
with the suction tube or with the rod; it is therefore difficult to establish the best condition for the
adjustment; (the higher is the packing wear, the lower must be the distance between the adjust-
ing nut and the lower female adaptor).
Figure A
32
Female adaptor
Adjusting nut
Содержание MSU-113 N
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