PRODEM PDS Series Operating Instructions Manual page 42

MAINTENANCE
EXTRAORDINARY MAINTENANCE
Adjustment:
Slowly move the movable jaw (Q) and check the play between the blades on the frame (B and C) and the
blades on the movable jaw (X and Y). Make sure that it never exceeds 0.4 mm (it is initially adjusted to 0. 1
mm).
Loosen the locking bolts on the blades (B and C) located on the frame (without removing them) and
interpose one or more adjustment shims and then retighten the bolts.
If excessive play remains, despite the use of all the shims provided (F and G), it is possible to rotate the
blades on both the frame and the movable jaw.
If the blades are very worn, they must be replaced.
Replacement:
If there is still excessive play, despite the use of the shims provided (F and G) and after having rotated them,
it is necessary to replace the blades (B, C, X and Y).
REMOVE the worn blade and all the shims by loosening the locking screws.
Install the new blade and repeat the adjustment of the play between the blades (B, C, X and Y).
ATTENTION!
An excessive interval between the cutting blades leads to material jams and, as a consequence, a
considerable reduction of perforating efficiency. The jammed material can create dangerous situations.
ANTI-WEAR MATERIAL
It is periodically necessary to check the state of deterioration of the jaws of the attachment and replace the
anti-wear material when necessary. The material must be applied following the instructions below.
ATTENTION!
Before replacing the material, carefully remove any paint residues to avoid releasing toxic vapors. Also
remove any deposits of cement, concrete and accumulated crushing waste on the part to be filled.
ATTENTION!
Before adding welded material, make sure there is no oil or inflammable liquids near the work area.
To add welding material, connect the ground pole of the welding machine to the part to be welded, as close
as possible to the welding area. The ground pole must be connected so that the current does not cross the
hinges or the hydraulic cylinder. If the attachment is mounted on the operating machine during welding,
follow the instructions in the latter's manual to avoid damaging its battery or electronics.
After carefully cleaning the area where material is to be added and the surrounding area, pre-heat to 150
to 200 °C, checking the temperature frequently. Exceeding these temperatures can alter the mechanical
properties of the material.
Do not deposit more than two superimposed layers on the claws of the movable jaw of the attachment or
on the part to be filled. If the wear on the part in question is of significant size, insert shaped and beveled
material to bring the part involved to its original dimensions. Then, proceed with welding the piece and
filling it.
Grind the ends of the fill material beads.
Perform a slow cooling in the absence of air drafts.
Scrupulously follow the technical application standards recommended by the manufacturer of the fill wire.
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Translated by the original