PA A80R, Maintenance Handbook

 3 

  Indicates a assembling/disassembling procedure.

  Indicates a checking/maintenance operation on several parts.

Indicates suggestions/procedures to which particular attention should be given.

  The A80R 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 

on page 1-3 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 

EPDM. Lubricate ONLY with SILICONE GREASE. For use with Detergent liquid, Chemical addi-

tives etc that are not compatible with the standard seals, it is essential to contact our TECHNI-

CAL OFFICE for further information. On request, the O-RING seals (DYNAMIC) are available in 

different materials such as NBR-FFKM(kalrez)-FKM(viton). The STATIC seals are in FKM (viton). 

For programmed maintenance check the instruction book under the heading “maintenance”.

  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 silicon grease while assem-

bling. 

 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