Connecting The Cpa Valve Terminal; Auxiliary Pilot Air - Festo CPA VI Series Manual

3. Installation

3.2 Connecting the CPA valve terminal

3.2.1 Auxiliary pilot air

CPA... 9808A
Seal the work connections (2 or 4) with blind plugs or
threaded blind plugs on sub-bases fitted with reserve
plates.
To guarantee the optimum performance of your CPA
valve terminal, we recommend that the compressed air
and, if necessary, the exhaust tubing be connected on
both sides in the flowing cases:
– when large-volume cylinders are operated at high
speeds
– when several valves are switched to through flow at
the same time.
The CPA valve terminal can be operated with either in-
ternal or external auxiliary pilot air, depending on the
end plate fitted on the right. You can recognize the type
of auxiliary pilot air for which your CPA valve terminal is
equipped by means of the type designation on the right-
hand end plate (see table).
CPA valve terminal
with external auxiliary pilot air
with internal auxiliary pilot air
Type of right-hand end plate
CPA..-EPR-S
CPA..-EPR
3-5