Ross Controls CATEGORY 4 - 5_2 VALVES CROSSMIRROR SERIES 77 - Manual (Page 9)

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CAUTIONS
Installation
Double valves should be installed only by persons
trained and experienced in the installation of such
equipment.
Lines
Air supply directed through air preparation units and
pressure regulator to pressure port 1 requires
minimum line capacity of pressure port 1.
Lines and line connections must be in accordance
with relevant safety regulations, e.g. prEN...
Pneumatic Presses“ (June 1998).
Cylinder speed regulation
When installing components between the double
valve and the work element, the relevant safety
regulations e.g. prEN... Pneumatic Presses“ (June
1998) need to be observed.
Air preparation
An efficient filter unit (at least 5 µm) must be mounted
before the valve. Use of a lubricator is not necessary
if the work element is designed for non-lube
operation.
Silencers
Silencers can be mounted to ports 3 and 5 of the
double valve. These must be in accordance with the
relevant safety regulations, as for instance prEN...
Pneumatic Presses“ (June 1998).
Restricting the
exhaust port of a double valve can adversely affect
its proper operation. Silencers must be resistant to
clogging and have a flow capacity larger than the
exhaust capacity of the valve
.
Piloting
Electrical piloting of the double valve must be in
accordance with the relevant (application-specific)
safety regulations.
SAFETY-RELEVANT CAUTIONS:
• The use of surge suppressors in the solenoid
circuits may slow down the de-energisation of the
solenoid coils and thereby may delay response of
the valve elements which may increase exhaust time.
• Depending on the application, the electrical
connection with the valve may have to be secured
separately.
• In case of machine vibration > 25g a suitable
shock absorbing mounting device has to be provided
for the valve.
Filter and
water separator
Mounting schematic (example)
5/2-Way Double Valves
with C ROSS M IRROR ® -Sensing
5/2-C ROSS M IRROR ®
double valve
Pressure switch
Volume
Double-acting
cylinder
Pressure gauge
Lubricator
Pressure reducing
valve