Assembly Of Optional Parts - SMC Networks AR20MK Series Operation Manual

7. Assembly of Optional Parts

7-1. Bracket (Panel mount)
Set nut
(
Knurled face)
Bracket
( face)
Knurled
Regulator
7-2. Pressure gauge (round type)
Regulator
Wrench flats
Grooves for
applying wrench
Rotation stopper
Pressure gauge port
Pressure gauge
(round type)
1) Bracket mounting
Mount the bracket to the regulator as shown in the
picture.
Assemble so that the rotation stopper of the regulator and
the bracket are engaged properly.
2) Secure with the set nut
Ensure that the knurled faces of the bracket and the set
nut are facing each other.
3) Tightening
Turn the set nut while the regulator is aligned correctly
with the bracket. The knurling of the bracket and set nut
stops loosening of the screw. Usually, these can be
tightened adequately by hand. (Extra tightening is
recommended for panel mounting).
Note) When retightening
Please use a hook wrench on the grooves of the set nut.
After hand tightening, follow the values in the table below
for retightening.
Model Tool size
AR20M-D
AR30M-D
AR40M-D
1)
Pressure gauge mounting (round type)
Before mounting the pressure gauge onto the pressure
gauge port of the regulator, confirm that sealing material
has been applied to the pressure gauge.
Please refer to "Piping" on page 5 when using sealing
tape.
Wrench size
Model Tool size
AR20M-D
AR30M-D
AR40M-D
Note1） Positioning of pressure gauge
Adjust the pressure gauge position by tightening it.
Adjustment in loosening direction may cause air leakage.
No plug is mounted onto the pressure gauge port of
Note2）
product with a round type pressure gauge.
Note3） Torque control
Please use the value in the torque table described in
"Piping" on page 5 when controlling the tightening torque.
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Amount of
Reference torque
retightening
34/38 2.0+/-0.2 N m
2 to 5 notch
52/55 3.5+/-0.3 N m
52/55 4.0+/-0.4 N m
14