Niro Soavi S.p.A
4C042E0C.DOC 4.4.7
4.4.2.1 DISASSEMBLING
Plunger gaskets are housed inside the flanges located in the rear part of the
head, so disassembly must be carried out through the part of the sump behind
the head.
CAUTION: To carry out maintenance FIRST remove the packing of the
middle plunger (for machines with 3 plungers; of the central plungers for
machines with more than 3 plungers), THEN of the side plungers.
With reference to figure 4.4.3:
• move the plunger all the way forward (outer dead center);
• remove the plunger clamp (figure 4.4.1 item B) by loosening the screws
(figure 4.4.1 item A); if necessary insert one of the two screws in the middle
bore of the clamp to loosen it;
• move the guide plunger all the way back (inner dead center);
• disconnect water or sterile condensate pipe;
• loosen the retaining nuts (N) of the packing flange (E) and remove it;
• pull out the packing flange (F) together with the plunger, if necessary use a
lever on the flange (F);
• remove the packing (H + R + M + L) and piston (G) from the flange (F).
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