Installation - SMC Networks ASP Series Quick Start Manual

Series
Specific Product Precautions
Be sure to read before handling. Refer to front matter 56 for Safety Instructions
and pages 468 to 471 for Flow Control Equipment Precautions.
Design/Selection
Warning
1. This product cannot be used for accurate and
precise intermediate stops of the actuator.
Due to the compressibility of air as a fluid, the actuator will
continue to move until it reaches a position of pressure
balance, even though the pilot check valve closes with an
intermediate stop signal.
2. This product cannot be used to hold a stop position
for an extended period of time.
Pilot check valves and actuators are not guaranteed for zero
air leakage. Therefore, it is sometimes not possible to hold a
stop position for an extended period of time. In the event that
holding for an extended time is necessary, a mechanical
means for holding should be devised.
3. Consider the release of residual pressure.
Actuators may move suddenly due to residual pressure, which
can be dangerous during maintenance procedures.
4. When used in a balance control circuit, there are
instances in which the check valve cannot release,
even though the pilot pressure is 50% of the operat-
ing pressure. In these cases, the pilot pressure
should be the same as the operating pressure.
5. For reference, SMC has conducted endurance tests
in which ON, OFF operation of the check valve was
performed at the maximum operating pressure,
with a confirmed endurance of 10 million opera-
tions.
Since the tests were performed under limited condi-
tions, use caution in evaluating the results.
6. The check valve has a construction, in which it is
closed by the differential pressure generated when
the inlet pressure (IN side) or outlet pressure (OUT
side) solenoid valve is switched. Be aware that the
check valve does not close completely and the
outlet pressure (OUT side) may drop when the inlet
pressure (IN side) drops gently and the differential
pressure becomes smaller than the minimum oper-
ating pressure or cracking pressure.

Installation

Warning
1. When mounting, please firmly align the tool with
the hexagon width across flats of the pilot body. If
the hexagon width across flats is damaged as a
result of failure to properly align the tool, the pilot
body will be deformed, and poor pilot operation
may result.
Air source
Warning
1. If moisture enters the inside of the connecting
piping, the cover may corrode, and it may lead to a
pilot operation malfunction.
ASP
AS
TMH
ASD
AS
AS-FE
KE
AS-FG
AS-FP
AS-FM
AS-D
AS-T
ASP ASP
ASN
AQ
ASV
AK
VCHC
ASS
ASR
ASQ
621
A