Swagelok Changeover SCO, Руководство пользователя, Страница: 12 / 20

SCO User Manual
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11. Set RH regulator by following steps 1 through 4. It is imperative that once the set point is reached it is held by ensuring the stem
does not move. Do NOT add half a turn increase or adjust the set point in any way on the RH regulator, as doing so will result in
gas being drawn from both bottles. It may be easier to do this with the LH regulator removed from the back plate.
12. Fit the M10 × 1 mm nut onto the stem, ensuring the stem does not move. Tighten nut all the way to the body. Then turn nut
slightly to ensure the stem will not move when the shaft is fitted. Do not overtighten the nut.
13. Screw the machined shaft onto the regulator stem , ensuring the stem does not rotate.
5. Slowly and without changing the set pressure, screw on the machined changeover
SCO hub
to the LH regulator. Stop the
hub around 5/32 in. (4 mm) before contacting the regulator body. The
changeover lever handle
must be pointed toward the
top of the panel.
6. Screw the regulator handle lock nut ( M10 x 1 mm) back onto the regulator stem.
7. Tighten the
M10
nut all the way down inside the SCO hub. Tighten while holding the
changeover lever handle
in place
pointed towards the top of the panel. The
changeover lever handle
must point towards the outlet of the panel at all times.
8. The regulator set point should remain unchanged after tightening (a slight change 0.5 bar/7 psig is acceptable).
Visually verify that the stem has not rotated by checking the location of the mark placed in step 4.
9. Ensure the
SCO hub
rotates through its full movement of 180 degrees. The handle should rotate from 12 o’clock to 6 o’clock
freely without the
SCO hub
hitting the body or slipping on the shaft.
10. The LH regulator is now set.
M6 × 1 Bolt
1/4 in. × 20 Bolt
M10 Retaining Unit
From KPR Handle
SCO Hub
Gap Between Hub and Cap
Changeover
Lever Handle
Machined Shaft
Stem