Indicator Light/Surge Voltage Suppressor
Caution
1. Preparation before piping
Before piping is connected, it should be thoroughly blown out
with air (flushing) or washed to remove chips, cutting oil and ot-
her debris from inside the pipe.
2. Wrapping of pipe tape
When connecting pipes and fittings, etc., be sure that chips
from the pipe threads and sealing material do not get inside the
valve.
Further, when pipe tape is used, leave 1.5 to 2 thread ridges
exposed at the end of the threads.
Piping
Caution
3. Tighten threads with the proper tightening
torque.
When screwing fittings into valves, tighten with the torques gi-
ven below.
Connection threads
Rc 1/4
Rc 3/8
Rc 1/2
Rc 3/4
Rc 1
12 to 14
22 to 24
28 to 30
28 to 30
36 to 38
Proper tightening torque N
⋅
m
Tightening torque for piping
Winding
direction
Pipe tape
Expose approx. 2 threads
1.
The valve has been lubricated for life at the factory, and
does not require any further lubrication.
2.
In the event that it is lubricated, use Class 1 turbine oil (wit-
hout additives), ISO VG32.
However, once lubrication is applied it must be continued,
as the original lubricant may be eliminated leading to mal-
function.
Contact SMC regarding Class 2 turbine oil (with additives),
ISO VG32.
Lubrication
Caution
4. Connection of piping to products
When connecting piping to a product, refer to its instruction
manual to avoid mistakes regarding the supply port, etc.
5. F.R.L. module combination
When connecting to a modular F.R.L. combination (AC2000 to
6000), select one of the spacers, which are included. (Refer to
page 6 for details.) However, modular combination with AC4000-
06 is not possible.
Furthermore, connect soft start-up valves to the secondary side
of the F.R.L. combination.
6. Primary side piping conditions
The nominal size of the piping material's or equipment's bore
should be equal to or larger than the soft start-up valve's port
size. The composite effective area of the primary side's (P port
side's) piping or equipment should be equal to or larger than the
values below.
When the piping is restricted or the supply pressure is
insufficient, the main valve will not switch and air leakage may
occur from the R port.
Model
AV2000
AV3000
AV4000
AV5000
5
22
35
50
Composite effective area mm
²
Voltage
AC and 100VDC
24VDC or less
Electrical
circuit
Terminal
DIN terminal
1
+
2
–
DIN terminal
1
2
Electrical Connection
Caution
Terminal no. 1 (+)
ZNR
With indicator light
Terminal no. 2 (–)
Terminal no. 1 + (–)
With indicator light
ZNR
+(–)
–(+)
Terminal no. 2 – (+)
Note) There is no polarity (+ or –).
The internal connection of the DIN terminal is as shown below,
therefore, connect to the power supply side as shown.
AV2000/3000/4000/5000
Specific Product Precautions 2
Be sure to read before handling.
Refer to page 7 for safety instructions.
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