Saint Gobain Vidros PFD1 - Manual (Page 11)

PFD1/PFS1 – OPERATING INSTRUCTIONS
INDEX DATE N°
03 27/09/01 DC01020US
10/11
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Use the pick (P/N 1643) to correctly position the sleeve in its groove. Be careful not to damage the
sleeve (Figure 7):
•
Repeat this operation for the 4 sets of rings.
15) Fit the plates and the body rings (P/N 2706, Mark L) on the core (tighten moderately the screws
P/N 2729), insert first the O.ring (P/N 1720) under the screw head,
16) Fit new plastic caps (P/N 1028) so that tightness between the core and the plates is ensured,
17) Important: lightly wipe the central shaft and shaft composite rings with silicon grease (Molykote
111) before re-assembly. Then insert the central shaft without turning it when threaded part reaches
the O.rings,
18) To re-assemble follow the above instructions but in reverse order.
VI.3.4 – Replacing the PTFE sleeves
Follow the same procedure as for VI.3.3 until 14); after replacing the composite rings, remove the PTFE
sleeves (P/N 7220) from the groove with a blunt pointed instrument. Clean and re-assemble the new part.
A pump that was not originally fitted with PTFE sleeves can be equipped with sleeves. In this case, you
need to change the plates (P/N 2709 and 2728, Marks B and C).
VI.3.5 – Replacing the bellow and body O.rings
After removing the bellows (see V1.3.2, step 8), remove the bellow Viton O.rings (P/N 2725) and the
body O.rings (P/N 2739, Mark H
) . Then carefully replace the new ones without scratching the surface
of the bellows (P/N 2613 or 2613S, Mark F) or housing (P/N 7145, Mark K).
VI.3.6 – Replacing the manifold O.rings
Follow point VI.3.2, steps 3) and 4). Carefully replace the manifold O.rings (P/N 2745, Mark G). Take
care as these parts are fragile, especially the elbow connectors.
1643
Figure 7