SMC Networks IR3010 Series Operation Manual page 12

Warning
(1) Do not use a precision regulator outside the range of its specifications as this can
cause failure.(Refer to the specifications.)
(2) Screw a panel nut with the recommended proper torque 21N m when mounting onto a
panel. Looseness or faulty sealing will occur if tightening torque is insufficient, while
thread damage will result if the torque is excessive.
(3) If a directional switching valve (solenoid valve, mechanical valve, etc.) is mounted on
the supply side of the regulator and repeatedly switched ON and OFF, wear of the
nozzle/flapper section will be accelerated and a discrepancy in the setting value may
occur. Therefore avoid using a directional switching valve on the supply side. In the
event a directional switching valve will be used, install it on the output side of the
regulator.
(4) The accessory pressure gauge is supplied with the regulator in the unassembled
status. Before using the regulator, be sure to install the pressure gauge at the gauge
port of the regulator. At this time, the recommended tightening torque of the pressure
gauge is 7 to 9N m.
(5) Air is normally released from the bleed hole(the two hole on the side of the body's
mid-section). This is a necessary consumption of air based on the construction of the
precision regulator, and is not an abnormality.
(6) Make sure to tighten the lock nut after pressure adjustment.
(7) There may be oscillation of the set pressure or noise depending on the pressure
conditions, piping conditions and ambient environment. In this case, it is possible to
improve the problem by changing the pressure conditions and piping conditions. If the
problem is not improved, contact your SMC sales representative.
(8) After supplying pressure from the upstream side or adjusting the set pressure, the set
pressure may vary gradually over time due to changes in the internal components. If
the variation in the set pressure becomes large, adjust the set pressure again by
adjusting the setting knob.
(9) Changes in the ambient temperature or fluid temperature may result in changing the
set pressure. If this occurs, stabilize the ambient temperature and fluid temperature
properly.
(10)The supply pressure is relatively high (approx.0.5 MPa or more), the set pressure is
low (approx.0.1 MPa or less), and when operated with the output side released to the
atmosphere, there may be pulsations in the setting pressure. In this kind of situation,
operate with the supply pressure reduced as much as possible, or increase the set
pressure somewhat and restrict the output line (add and adjust a stop valve, etc.).
(11)The capacity of the output side is large, and when used for the purpose of a relief
function, the exhaust sound will be loud when being relieved. Therefore, operate with
a silencer (SMC Series AN) mounted on the exhaust port (EXH port). The connection
is Rc 1/2.
Operation
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