5. Maintenance and conversion
5−11
Festo P.BE−VTSA−44−EN en 0509NH
Please note
Reversible pressure regulator plates may only be com
bined with valves which can be operated reversibly.
Valve location with vertical pressure shut−off plate:
The pilot air for the valve is branched internally from
channel 1 in the vertical pressure shut−off plate, even if
the valve terminal is operated with external pilot
air (see
appendix B, section B.1). If all the valve locations on the
VTSA valve terminal are fitted with vertical pressure
shut−off plates, it will not be necessary to supply the
valve terminal with external pilot air. The operating pres
sure at which the valve terminal is operated must in this
case lie within
the range of the required pilot pressure
(see apppendix A, Tab.A/4 and Fig.A/1).
The combination of reversibly operated valve terminals
with the following components for vertical stacking is
not permitted:
reversible pressure regulator plates
throttle plates
vertical pressure shut−off plates
vertical supply plates.
Removing the components
1. Unscrew the screws of all components above the relevant
position.
2. Remove these components from the valve location.
Fit new components
1. Check the seals for damage. Replace the seals if they are
damaged.
2. Place the new component on the valve location or onto a
component already fitted.
3. Fasten the new component. Width across flats of the
hexagon socket wrench see Tab.5/2.
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