PA A42FR2, Руководство по обслуживанию

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Indicates a assembling/disassembling procedure.
Indicates a checking/maintenance operation on several parts.
Indicates suggestions/procedures to which particular attention should be given.
The A42R-A42R2 head is the volumetric type: the motion is provided by a turbine which
rotates at extremely high speed in relation to the quantity of water received by the injectors
and is calibrated to function only at a certain rate of fl ow.
If the fl ow of the liquid varies the turbine has to be adjusted with the correct injectors,
otherwise the mechanism will be damaged. Therefore we suggest consulting the diagram D2 of
the instruction manual to fi nd the exact correlation between fl ow and diameter of the injectors,
or contact the manufacturer directly.
For disassembling and reassembling the snap rings (seeger) be careful not to force the
opening too much so that they do not lose their original shape. We advise using pliers with end
stop, if possible.
The STANDARD Tank cleaning head is supplied with seals (DYNAMIC) in PTFE + O-Ring in
FKM (Viton). Lubricate ONLY with TEFLON GREASE. For use with Detergent liquid, Chemical
additives etc that are not compatible with the standard seals, it is essential to contact our TE-
CHNICAL OFFICE for further information.
When disassembling check that the gaskets, bearings and gears are intact and in good condi-
tion. If an element is not perfectly intact and if it does not function properly request a replace-
ment from the manufacturer.
Always grease the ceramic coatings and the seal gaskets with Teflon grease while
assembling.
Warnings page 3
General indications page 3
Disassembly/Checking page 6
Assembly/Maintenance page 16
Only qualifi ed personnel should carry out the operations described in this ma-
nual.
For programmed maintenance check the instruction book under the heading “main-
tenance”
Table of contents
Warnings
General indications
Used symbols