VP31
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5 Series
Specific Product Precautions (4)
Be sure to read this before handling the products.
Overhaul, Cleaning, Addition of Grease (VP31
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5V Series: Vacuum Specification)
1) How to overhaul
Remove the four hexagon socket head cap screws (11) and take the pilot valve off.
The guide ring (9) can be found on the body, and take it away with a flat head screw driver to take the internal parts away.
2) How to add grease
Take the parts off and wipe off the dust adhered on them.
Wipe off the dust inside the body (1), too.
Take the O-rings (5) and (7) in the sliding part off of the spool valve (6), wipe them to clean and apply grease.
Apply grease to the portion A of the spool valve (1), internal surface of the guide ring and portions B, C, D of the body (1), too.
Note 1) Do not wash the O-ring and the spool valve with organic solvent or such.
Note 2) It is suggested to use the silicone grease “G-40M” made by Shin-Etsu Chemical Co., Ltd.
3) Overhaul
1. Insert the element (2) and the spring washer (3) in the direction that the figure shows.
2. Insert the spool valve (6) and the guide ring (9) together into the body (1).
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Be sure to have a performance inspection and an air leakage test after overhaul of the valve.
Performance deterioration, damage and such caused by overhaul for cleaning are out of SMC’s guarantee.
(Contact SMC for repair if it needs to be guaranteed.)
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No.VP3145-OMM0002-B
