Saint Gobain Vidros PFD1 VI.1 How to dismantle, VI.2 Examination, VI.3.2 Replacing the bellows

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PFD1/PFS1 – OPERATING INSTRUCTIONS

VI.1 – How to dismantle

Before dismantling the pump, refer to the Maintenance schedule V.1, and proceed as follows:

Disconnect the air/nitrogen supply,

Remove the inlet and outlet connections (beware of any chemical droplets remaining on the inside),

Rinse the outside of the pump in DI water to remove all trace of chemicals,

Remove pump support screws.

VI.2 – Examination

To comply with your local Health and Safety Regulations it is essential the pump and all parts are thoroughly cleaned both on the inside and outside.

See V.2 for the Preventive Maintenance Schedule. To repair the pump, refer to schedules V.1 and V.2.1.

VI.3 – Stripping and assembling the pump

The SGPPL ASTI design ensures that the pumps are easy to strip and assemble.

The only tools required are a screwdriver to replace the shuttle valve (see VI.3.1) and a strap wrench to remove body rings (P/N 2706, Mark L). All other items can be removed and replaced by hand. A tools kit for the whole maintenance is available (P/N KPFD1), as well as maintenance kits (P/N AIR PFD1, LIQ PFD1, and MEC PFD1), and a preventive maintenance box (P/N PM PFD1 or PM PFS1). For more details on these kits, please report to appendix documents.

Please refer to drawing “APP 1 REF” to visualize marks and part numbers quoted hereafter.

VI.3.1 – Replacing the shuttle valve

The valve is easily removed from the outside:

1)Unscrew the 2 fastening screws – take care not to damage them,

2)Replace with a new factory assembled shuttle valve (P/N 2701, Mark A),

3)Carefully tighten the 2 fastening screws. Do not overtighten,

4)Test with compressed air/nitrogen. Re-tighten if necessary.

VI.3.2 – Replacing the bellows

To replace the bellows proceed as follows:

1)Remove shuttle valve (P/N 2701, Mark A) (see VI.3.1),

2)Unscrew exhaust silencers (P/N 7185),

3)Unscrew the 4 manifold nuts and remove the 4 balls valves (P/N 2712) – take care not to lose them,

4)Remove the 4 manifold O.rings (P/N 2745, Mark G),

5)Position the pump into a bench vice (tighten only over the core P/N 2708),

6)Unscrew the body ring (P/N 2706, Mark L) with a strap wrench while holding the PFA body,

7)Remove the pump body (P/N 7145, Mark K),

8)Now unscrew the bellows (P/N 2613 or 2613S, Mark F) from the central shaft (P/N 2615, Mark D),

9)Replace with new bellows – moderately hand tighten,

10)To re-assemble follow the above but in reverse order from 8) to 1).

All TEFLON® PTFE and PFA parts are soft; please handle with care to avoid damage. Do not put them down on their sealing surfaces.

To re-assemble the PFA bodies, hand tighten the body rings (P/N 2706, Mark L), and block them up by giving 1/8 further turn with the strap wrench. Check that bodies are well positioned so that manifolds are tight.

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INDEX

DATE

03

27/09/01

DC01020US

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Contents PFD1/PFS1 Headquarters FactoryIndex II Quick checklist GeneralIII Installation and Operation III.1 TestingIII.2 Set up II.2 ReceptionIV Applications Maintenance Trouble ShootingIV.4 Applications IV.5 Limitations of useVI Dismantling and Repair Important these parts should always be replaced togetherIntermittent operation CommentsVI.1 How to dismantle VI.2 ExaminationVI.3 Stripping and assembling the pump VI.3.1 Replacing the shuttle valve1641 Short Long Ring7135F 2680 Push Step 26801641 1643 VI.3.4 Replacing the Ptfe sleevesVI.3.5 Replacing the bellow and body O.rings VI.3.6 Replacing the manifold O.ringsVII Warranty Pumps PFD1 Series 2 & PFS1 PFD1 PFS1PFD1/PFS1 Maintenance Kits APP 1 REF Part Numbers Table Following reference combination is not relevantAPP 1 EXT Air supply 3 bar Air supply 2 bar Air supply 5 barAir supply 4 bar APP 1 CAB