2 DressPack and SpotPack
2.7.1 Introduction
3HAC 025861-001 Rev.E 99
Air supply circuit
The air supply circuit provides the function package with filtered air (see Figure 64).
The air supply circuit begins with a internal G ½" thread, manually operated shut off
valve with residual pressure release though a silencer, air filter with nominal
filtration of 5 µm with a metal protection of the bowl, a digital pressure switch and a
cross interface containing plugged air outlet ports (internal G 3/8" thread).
There is a digital pressure switch to monitor the air pressure and to give a signal to
the control system if the pressure becomes too low.
The pressure switch is delivered with pre-set pressure limit, set to 0.6 MPa.
The air supply circuit ends with a Parker Pushlock adapter (suitable for a Parker
Pushlock DIN 20 078 A, we recommend a Parker Pushlock 39C82-15-8BK fitting).
Figure 64 Air Supply Circuit.
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