Saint Gobain Vidros PFS1, PFD1 manual 1643, VI.3.4 Replacing the Ptfe sleeves

PFD1/PFS1 – OPERATING INSTRUCTIONS

∙Use the pick (P/N 1643) to correctly position the sleeve in its groove. Be careful not to damage the sleeve (Figure 7):

1643

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.

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INDEX	DATE	N°
03	27/09/01	DC01020US