SMC AR20-D Regulator Operation Manual PDF
Summary of Content for SMC AR20-D Regulator Operation Manual PDF
Doc. No. AR-OMX0055-B
PRODUCT NAME
Regulator
MODEL / Series / Product Number
AR20(K)-(F,N)01(F,N)02(B,E,E1,E2,E3,E4,G,H,J,M)(-1,N,R,Y,Z,ZA)-D
AR30(K)-(F,N)02(F,N)03(B,E,E1,E2,E3,E4,G,H,J,M)(-1,N,R,Y,Z,ZA)-D
AR40(K)-(F,N)02(F,N)04(B,E,E1,E2,E3,E4,G,H,J,M)(-1,N,R,Y,Z,ZA)-D
AR40(K)-(F,N)06(B,E,E1,E2,E3,E4,G,H,J,M)(-1,N,R,Y,Z,ZA)-D
AR50(K)-(F,N)06(F,N)10(B,E,E1,E2,E3,E4,G,M)(-1,N,R,Y,Z,ZA)-D
AR60(K)-(F,N)10(B,E,E1,E2,E3,E4,G,M)(-1,N,R,Y,Z,ZA)-D
Contents
Page
1. Safety Instructions 2-6
2. Application 7
3. Standard Specifications 7
4. How to Order 8
5. Options 9
6. Structural Drawing and Replacement Parts 10
7. Assembly of Optional Parts 11-12
8. Operation and Adjustment 13-14
9. Trouble Shooting 15-16
10. How to Replace the Components 17-24
10-1. Diaphragm Assembly Replacement 17
10-2. Valve Guide Assembly and Valve Assembly Replacement 18
10-3. Square Embedded Type Pressure Gauge Replacement 19
10-4. Right angle square type pressure gauge Replacement 20
10-5. Blanking Plate Assembly Replacement 21
10-6. Check Valve Assembly Replacement 22
10-7. Plug (with O-ring) Replacement AR20(K) to 60(K) 23
10-8. Plug Assembly Replacement AR20K to 60K 24
11. Disassembly Drawing 25-27
12. Dimensions 28-30
-1-
Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of Caution, Warning or Danger. They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC)*1) , and other safety regulations. *1) ISO 4414: Pneumatic fluid power -- General rules relating to systems. ISO 4413: Hydraulic fluid power -- General rules relating to systems. IEC 60204-1: Safety of machinery -- Electrical equipment of machines .(Part 1: General requirements) ISO 10218: Manipulating industrial robots -Safety. etc.
Caution Caution indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
Warning Warning indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Danger Danger indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
Warning 1. The compatibility of the product is the responsibility of the person who designs the equipment or
decides its specifications. Since the product specified here is used under various operating conditions, its compatibility with specific equipment must be decided by the person who designs the equipment or decides its specifications based on necessary analysis and test results. The expected performance and safety assurance of the equipment will be the responsibility of the person who has determined its compatibility with the product. This person should also continuously review all specifications of the product referring to its latest catalog information, with a view to giving due consideration to any possibility of equipment failure when configuring the equipment.
2. Only personnel with appropriate training should operate machinery and equipment. The product specified here may become unsafe if handled incorrectly. The assembly, operation and maintenance of machines or equipment including our products must be performed by an operator who is appropriately trained and experienced.
3. Do not service or attempt to remove product and machinery/equipment until safety is confirmed. 1.The inspection and maintenance of machinery/equipment should only be performed after measures to
prevent falling or runaway of the driven objects have been confirmed. 2.When the product is to be removed, confirm that the safety measures as mentioned above are implemented and the power from any appropriate source is cut, and read and understand the specific product precautions of all relevant products carefully. 3. Before machinery/equipment is restarted, take measures to prevent unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety measures if the product is to be used in any of the following conditions. 1. Conditions and environments outside of the given specifications, or use outdoors or in a place exposed to direct sunlight. 2. Installation on equipment in conjunction with atomic energy, railways, air navigation, space, shipping,
vehicles, military, medical treatment, combustion and recreation, or equipment in contact with food and beverages, emergency stop circuits, clutch and brake circuits in press applications, safety equipment or other applications unsuitable for the standard specifications described in the product catalog.
3. An application which could have negative effects on people, property, or animals requiring special safety analysis.
4.Use in an interlock circuit, which requires the provision of double interlock for possible failure by using a mechanical protective function, and periodical checks to confirm proper operation.
-2-
Safety Instructions
Caution The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/Compliance Requirements The product used is subject to the following Limited warranty and Disclaimer and Compliance Requirements. Read and accept them before using the product.
Limited warranty and Disclaimer
1.The warranty period of the product is 1 year in service or 1.5 years after the product is
delivered,whichever is first.2) Also, the product may have specified durability, running distance or replacement parts. Please consult your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our responsibility, a replacement product or necessary parts will be provided. This limited warranty applies only to our product independently, and not to any other damage
incurred due to the failure of the product. 3. Prior to using SMC products, please read and understand the warranty terms and disclaimers
noted in the specified catalog for the particular products.
2) Vacuum pads are excluded from this 1 year warranty. A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum pad or failure due to the deterioration of rubber material are not covered by the limited
warranty.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of weapons of mass destruction(WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are governed by the relevant security laws and regulation of the countries involved in the transaction. Prior to the shipment of a SMC product to another country, assure that all local rules governing that export are known and followed.
Caution SMC products are not intended for use as instruments for legal metrology. Measurement instruments that SMC manufactures or sells have not been qualified by type approval tests relevant to the metrology (measurement) laws of each country.
Therefore, SMC products cannot be used for business or certification ordained by the metrology
(measurement) laws of each country.
-3-
Precautions for Design
Warning
(1) Polyacetal resin parts are used for the exterior. Organic solvents including thinner, acetone,
alcohol and ethylene chloride; chemicals including sulphuric acid, nitric acid and hydrochloric acid;
cutting oil, synthetic oils, ester-based compressor oil, alkali, kerosene, gasoline, lock material of
screw are harmful. Do not use the product where these are present.
(2) Consult SMC if no leakage is allowed due to the environment, or if the operating fluid is not air.
(3) Shield from ultra violet light and radiation with protective cover.
(4) A safety device needs to be installed if output pressure is exceeding the set pressure, otherwise
this can cause breakage of outlet device and equipment or lead to malfunction.
Caution
(1) Allowed air consumption from the exhaust port is 0.1 L/min(ANR) or less.
Selection
Warning
(1) Grease used on the internal sliding parts and seals may flow to the outlet side. If this is not
acceptable, please consult SMC.
(2) Residual pressure of product without backflow function is released unstably even though the inlet
pressure is released (residual pressure might be left in the product). Please select product with
backflow function to release the residual pressure completely.
(3) Long absence of operation or operation with sealed circuit or balancing circuit on the outlet side
may cause set pressure fluctuation. Please consult SMC if this is not acceptable.
(4) Set range of outlet pressure shall be 85% or less of the inlet pressure. Operating at a setting
exceeding 85% causes the outlet pressure to be easily affected by fluctuations in flow rate and inlet
pressure, leading to instability.
(5) Since the safety margin is calculated to the maximum value of the set pressure range shown in the
specification table, the pressure setting may be over the maximum value. However, use the
product within the specified range.
(6) If the product is used with circuit which requires high exhaust sensitivity or set precision, please
consult SMC.
Installation
Warning
(1) Connect the product ensuring the direction of "1"(IN) and "2"(OUT) for air direction and indicated
arrow. Incorrect connections may cause malfunction.
(2) Install with enough space around the regulator to perform regular maintenance and operation.
Refer to section [12.Dimensions] (p. 28 and p. 30) for necessary space.
(3) Do not drop or apply impact during transportation or installation. Damage of products or pressure
gauge can result in malfunction.
(4) Do not install in areas with high humidity or high temperature. It may lead to a malfunction of the
pressure gauge.
-4-
Adjustment
Warning
(1) Adjust the set pressure ensuring correct inlet and outlet pressures. Turning the knob excessively
can cause damage to the internal parts.
(2) Do not use tools on the pressure regulator knob as this may cause damage. It must be operated
manually.
Caution
(1) For the product with a pressure gauge, do not apply pressure exceeding the maximum scale of the
pressure gauge in order to protect the gauge.
(2) Adjust the pressure whilst the pressure is increasing. Pressure may become lower than the set
pressure if adjusted by decreasing the value. Rotate the knob clockwise to increase the set
pressure. Counterclockwise to decrease the pressure. Moreover, please lock the knob after setting
pressure.
(3) For the regulator with backflow function, upstream pressure needs to be higher than downstream
pressure by 0.05 MPa or more.
(4) Outlet pressure may rise when the inlet pressure is discharged and resupplied after pressure
setting. In this case, consume air at the outlet which will bring the pressure closer to the set
pressure.
(5) Outlet pressure may change if the product is used for a long period of time. Please confirm the set
pressure regularly.
(6) When pressure difference between the inlet side and the outlet side is large, chattering may occur.
In that case, please reduce the pressure difference between the inlet and the outlet. Please consult
SMC it chattering continues.
Piping
Warning
(1) Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to
remove chips, cutting oil and solid foreign material from inside the pipe. Contamination of piping
may cause damage or malfunction.
(2) When screwing together pipes and fittings, etc., be certain that chips from the pipe threads and
sealant do not get inside the pipe. When a sealant tape is used, leave 1.5 to 2 thread ridges
exposed at the end of the threads.
(3) Connect piping/fittings using the recommended torque while holding the female thread side tightly.
Insufficient tightening torque leads to cause of loosening or sealing failure, and excessive
tightening torque leads to cause of breakage of screws. Tightening without holding female thread
applies an excessive force to the piping bracket directly, leading to breakage.
Recommended tightening torque for the port Unit: N m
Thread size 1/8 1/4 3/8 1/2 3/4 1
Torque 7 to 9 12 to 14 22 to 24 28 to 30 28 to 30 36 to 38
Recommended tightening torque for the pressure gauge port Unit: N m
Thread size 1/8
Torque 3 to 5
*Please refer to "10-7. Replacing the plug (with O-ring)" (P23), Replacement parts For the tightening torque of the plug (with O-ring).
(4) Before using an SMC fitting and S coupler, please refer to "Tightening the threaded portion of the
connection thread" of the Fittings & Tubing Precautions.
(5) Do not apply torsion or bending moment other than the weight of the product itself. External piping
needs to be supported separately as it may cause breakage. Non-flexible piping like steel tube is
susceptible to excessive moment load or vibration. Insert flexible tubes to prevent this.
-5-
Air Source
Warning
(1) Use clean air. Do not use compressed air containing chemicals, organic solvent, synthetic oil or
corrosive gas as it may be cause of breakage of components or operation failure.
(2) Air containing too much moisture may cause malfunction. Install an air drier or aftercooler before
the regulator.
Maintenance
Warning
(1) Release the pressure in the product to the atmosphere when replacing parts or removing piping.
(2) Maintenance and checks should be done by following the procedure in this operation manual.
Incorrect handling of the product may cause breakage or operation failure of the equipment or
device.
(3) When using the regulator with backflow function between a solenoid valve and an actuator, check
the pressure gauge periodically. Sudden pressure fluctuations may shorten the durability of the
pressure gauge. A digital pressure gauge is recommended for such applications or as deemed
necessary.
Caution
(1) If an emergency countermeasure is to be taken during setting failure or exhaust leakage, the
internal valve seating part should be checked. If failure such as foreign matter is found, remove it
before performing the emergency countermeasure.
-6-
2. Application This product aims at controlling pressure of air lines.
3. Standard Specifications
-7-
Model AR20-D AR30-D AR40-D AR40-06-D AR50-D AR60-D
Port size 1/8, 1/4 1/4, 3/8 1/4, 3/8, 1/2 3/4 3/4, 1 1
Pressure gauge port size Note 1)
Fluid
Ambient and fluid temperature Note 2)
Proof pressure
Max. operating pressure
Set pressure range
Construction
Weight 0.14kg 0.27kg 0.48kg 0.51kg 1.13kg 1.25kg
Note 1) Pressure gauge connection threads are not available for F.R.L. units with a square embedded type pressure gauge,
a right angle square type pressure gauge, or with a digital pressure switch.
Note 2) -5 to 50 o C for the products with the digital pressure switch.
Relieving type
1/8
Air
-5 to 60 o C (No freezing)
1.5 MPa
1.0 MPa
0.05 to 0.85 MPa
4. How to Order
AR - - - D
-8-
30 K 03 BE
Note 1) Option and Semi-standard: Select one each for a to g.
Note 2) : For NPT thread type only.
Note 3) : Select with an option E1, E2, E3 or E4.
20 30 40 50 60 Nil K Nil N F 01 02 03 04 06 10 Nil Without mounting option B With bracket H With set nut (for panel mount) Nil Without pressure gauge E Square embedded type pressure gauge (with limit indicator) G Round type pressure gauge (with limit indicator) J Right angle square type pressure gauge (with limit indicator) M Round type pressure gauge (with color zone) E1 NPN output / Wiring bottom entry E2 NPN output/ Wiring top entry E3 PNP output / Wiring bottom entry E4 PNP output/ Wiring top entry Nil 0.05 to 0.85 MPa setting 1 0.02 to 0.2 MPa setting
Nil Relieving type N Non-relieving type Nil Flow direction: Left to right R Flow direction: Right to left Nil Downward Y Upward
Nil Unit on product label: MPa, Pressure gauge in SI units: MPa Z Unit on product label: psi, Pressure gauge: MPa/psi dual scale Note 2) Note 2) Note 2) Note 2) Note 2)
ZA Digital pressure switch: With unit selection function Note 3) Note 3) Note 3) Note 3) Note 3)
3/8 1/2
Knob
g Unit indication
c Set pressure
d Exhaust
mechanism
e
Description
Without backflow function With backflow function
Rc NPT G
Digital
pressure
switch
S e m
i- s ta
n d a rd
Flow direction
f
Thread type
O p ti o n
a Mounting
b
Pressure
gauge
Symbol
Body size
Port size
3/4 1
With backflow function
1/8 1/4
5. Options
-9-
Options
AR20-D AR30-D AR40-D AR40-06-D AR50-D AR60-D
(1) Bracket assembly Note 1)
AR23P-270AS AR33P-270AS
(2) Set nut AR23P-260S AR33P-260S
Rc
Z : Both in MPa and psi
G
Rc
NPT
G
NPT Z : Both in MPa and psi
(5) Pressure gauge cover assembly
NPT Z : Both in MPa and psi
NPT Z : Both in MPa and psi
NPT Z : Both in MPa and psi
Note)
Note 1)
Note 2)
Note 3)
Note 4) In addition to the pressure gauge with a right angle adapter assembled, an adapter, lock pin, O-ring (1 pc.) and mounting screws (2 pcs.) are Included.
Note 5) In addition to the pressure gauge with a right angle adapter assembled, an O-ring (1 pc.) is included.
Note 6)
Right angle square type pressure gauge
assembly Note5)
GC3-10AS-JB-D
GC3-P10AS-JB-D-X30 (8)
Right angle square type pressure gauge Note 3) GC3-10AS-J-D
GC3-P10AS-J-D-X30
Right angle square type pressure gauge
(with mounting accessories) Note 4)
(6)
(7) GC3-10AS-JA-D
(9) : Unit selection function
: Unit selection function
Initial setting: psi
Pressure gauge Note 2)
(Round type)
G36-10-01
Square embedded type pressure gauge Note 3)
(Including part (5))
GC3-10AS-D
G46-10-N01-L
G46-10-01-L
G46-4-01 (Rc type) / G46-4-N01 (NPT type) / G46-P4-N01-X30 (NPT, Z type).
Part number for 0.2 MPa: G36-4-01 (Rc type) / G36-4-N01 (NPT type) / G36-P4-N01-X30 (NPT, Z type).
NPT
G36-10-N01
G36-10-01
Z
Digital pressure switch
(with accessories for mounting) ZA
G36-P10-N01-X30
G36-10-N01-L
G36-10-01-L
(4)
(3)
NPT
With O-ring (1 pc.) and mounting screw s (2 pcs.). Part number for 0.2 MPa: GC3-4AS(-J)-D (Rc, NPT type) / GC3-P4AS(-J)-D-X30 (NPT, Z type).
Assembly of 2 types of bracket and 2 set screws.
G46-10-01
G46-10-01-L
The numbers in the table and structural drawings are consistent with the numbers in sections [10. How to Replace the Components] (P17-24) and [11. Disassembly Drawing] (P25-27).
This is an assembly of a bracket and set nut (2).
No. Part name Piping
thread
type
Semi-standard specification
G36-10-01-L Pressure gauge
Note 2)
(Round type, with color zone)
Part No.
AR43P-270AS AR54P-270AS Note 4)
AR43P-260S
ISE35-R-65-MLA-X523
ISE35-R-25-LA-X523
G46-10-01
G46-10-N01
G46-P10-N01-X30
GC3-P10AS-D-X30
136150A
ISE35-N-25-PLA-X523
ISE35-N-65-PLA-X523
Output specification
NPN
PNP
GC3-P10AS-JA-D-X30
NPN
PNP
Top entry wiring
ISE35-R-25-MLA-X523
ISE35-R-65-LA-X523
ISE35-R-25-PLA-X523
ISE35-R-65-PLA-X523
NPN
PNP
Bottom entry wiring
ISE35-N-25-MLA-X523
ISE35-N-65-MLA-X523
ISE35-N-25-LA-X523
ISE35-N-65-LA-X523
Without pressure gauge/
With round type pressure gauge
(Backflow function: No)
Without pressure gauge/
With round type pressure gauge
(Backflow function: Yes)
With square embedded type pressure gauge With right angle square type pressure gauge With digital pressure switch
(Backflow function: No/Yes)
AR50-D/AR60-DAR20-D/AR30-D/AR40-D
(3) (3) (4)
(5)
(7)
(8)
(6) (9)
(1)
(2)
6Structural Drawing and Replacement Parts
-10-
Construction/ Common replacement parts
Without pressure gauge/
With round type pressure gauge
(Backflow function: No)
With square embedded type pressure gauge/
With digital pressure switch
(Backflow function: No)
Without pressure gauge/With round type pressure gauge
With square embedded type pressure gauge/With digital pressure switch
(Backflow function: Yes)
(10)
(11)
(12)
(17)
(13)
(13)
(14)
(15)
(16)
(13)
Replacement parts
AR20-D AR30-D AR40-D AR40-06-D AR50-D AR60-D
(10) Valve assembly AR24P-060AS AR34P-060AS AR44P-060AS AR49P-060AS AR54P-060AS AR64P-060AS
: Relief AR24P-150AS AR34P-150AS
N : Non-relief AR24P-150AS-N AR34P-150AS-N
(12) Valve guide assembly AR24P-050AS AR34P-050AS
Rc/G
NPT
(14) Blanking plate assembly
Rc
NPT
G
(16) Check valve assembly
(17) Check valve plug assembly
Note) The numbers in the table and structural drawings are consistent with the numbers in sections [10. How to Replace the Components] (P17-24) and
[11. Disassembly Drawing] (P25-27).
AR24P-370AS-01
AR24P-370AS-N01
AR24P-250AS
AR24P-320AS-01
AR24P-320AS-N01
AR24P-320AS-F01
AR24KP-020AS
AR20KP-090AS
Part No.
AR44P-150AS AR54P-150AS
AR44P-150AS-N AR54P-150AS-N
AR44P-050AS AR54P-050AS
Piping
thread
type
Semi-standard
specification
(11) Diaphragm assembly
No. Part name
(15) Plug assembly
Including part (13))
(13) Plug (with O-ring)
7. Assembly of Optional Parts
7-1. AR20-D/ AR30-D/ AR40-D Bracket (Panel mount)
1) Bracket mounting
2) Secure with the set nut
3) Tightening
* When retightening
7-2. AR50-D/ AR60-D Bracket
1) Mounting of bracket A
2) Mounting of bracket B
-11-
Please use a hook wrench on the grooves of the set nut.
After hand tightening, follow the values in the table below
for retightening.
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.
Ensure that the knurled faces of the bracket and the set
nut are facing each other.
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).
Fix the bracket B with the set screw (2 pcs.) included in
the package. Refer to the table below for the tightening
torque.
Insert bracket A from the front of the regulator so that the
fingers of the bracket A hold the regulator at the groove
and the bottom of the body.
Rotation stopper
Grooves for applying wrench
Set nut
Bracket
Regulator
Model Tool size Amount of
retightening Reference torque
AR20-D 34/38 2.0+/-0.2 N m
AR30-D 52/55 3.5+/-0.3 N m
AR40-D 52/55 4.0+/-0.4 N m
2 to 5 notch
Model Tool Reference torque
AR50-D
AR60-D Phillips screwdriver 1.5+/-0.2 N m
Regulator
Groove
Bracket B
Bracket A Fingers
Set screw (2 pcs.)
(Knurled face)
(Knurled face)
Bottom of the body
7-3. Pressure gauge (round type)
1) Pressure gauge mounting (round type)
Wrench size
Note 1) Positioning of pressure gauge
Note 2)
Note 3) Torque control
-12-
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.
Please use the value in the torque table described in
"Piping" on page 5.
No plug is mounted onto the pressure gauge port of
product with a round type pressure gauge.
Adjust the pressure gauge position by tightening it.
Adjustment in loosening direction may cause air leakage.
Pressure gauge (round type)
Regulator
Pressure gauge port
Wrench flats
Model Tool size
AR20-D
AR30-D
AR40-D
AR50-D
AR60-D
14
8. Operation and Adjustment
8-1. Pressure regulation
8-2. Indicator adjustment of the square embedded type pressure gauge
-13-
Knob
Orange mark
(1) Pull the knob in the arrow direction for unlocking, revealing an orange mark.
(2) Turning the knob clockwise increases the outlet pressure. When the knob of the relief type is rotated counterclockwise, pressure decreases. Note) Adjust the pressure in pressure increasing direction (rotate in the arrow direction). Otherwise, it may cause insufficient set pressure.
(3) After adjusting pressure, lock the knob by pushing it in the arrow direction.
Opening of transparent cover Indicator (green)
(1) Pull the opening of the transparent cover to unlock.
(2) Open the transparent cover as in the drawing and adjust the indicator to the upper and lower limit positions to be controlled.
(3) Close the transparent cover after adjusting the indicator.
8. Operation and Adjustment
8-3. Adjustment of the right angle square type pressure gauge
-14-
Example: Rotate by 90 degrees from standard orientation
Pressure gauge scale plate
Pressure gauge
cover assembly
Example: Rotate by 90 degrees from standard orientation
Right angle square type
pressure gauge assembly
Adjustment of mounting orientation of pressure gauge
The pressure gauge is secured to the product by means of a lock pin and by removing the lock pin,
it is possible to adjust the mounting orientation of the gauge in 90 degree rotations.
When adjusting the orientation, follow the procedures 1) of Disassembly and 9) and 10) of Assembly
in 10-4. Right Angle Square Type Pressure Gauge Replacement (P20).
Adjustment of orientation of pressure gauge scale plate
The pressure gauge is secured to the right angle adapter by means of screws and by removing the screws, it is possible to adjust the mounting orientation of the scale plate in 90 degrees rotations. When adjusting the orientation of the pressure gauge scale plate, follow the procedures 1) to 3) of Disassembly and 6) to 10) of Assembly in 10-4. Right Angle Square Type Pressure Gauge Replacement (P20).
O-ring
Mounting screws
Right angle adapter
Lock pin
Adapter
Product
9. Trouble Shooting
Refer to sections [10. How to Replace the Components] (P17-24) and [11. Disassembly Drawing] (P25-27).
Category Failure
-15-
Page for
reference
Note) Fluorine grease is recommended when applying additional grease.
Trouble CountermeasurePossible cause
Air pressure is not supplied to the inlet.
The product is installed opposite to the
flow direction.
Pressure regulating spring is damaged.
Valve spring is damaged.
Foreign materials caught in the rubber
seat of the valve or the O-ring on the
valve sliding part.
Seating part of the valve is damaged.
Foreign materials caught in the seating
part of the check valve.
Foreign materials caught in the seating
part or O-ring of the valve.
Rubber seat of the valve is damaged.
Valve spring is damaged.
The valve is fixed in an opened position.
The product is installed opposite to the
flow direction.
Diaphragm is damaged.
Foreign materials caught in seating part
of the exhaust valve.
Foreign materials caught in the seating
part or O-ring of the valve.
Rubber seat of the valve assembly is
damaged.
Foreign materials caught in the seating
part of the check valve.
Replace the check valve assembly.
Replace the valve assembly.
Replace the check valve assembly.
Replace the valve assembly.
Remove the valve guide to clean the valve,
valve seating part and valve O-ring. And
then, apply grease to the O-ring and sliding
part of the valve.
Clean the seating part of the relief valve or
replace the diaphragm assembly.
Replace the diaphragm assembly.
Install the product correctly after confirming
the direction of flow.
Replace the valve guide assembly and
valve assembly.
Replace the valve spring.
Replace the pressure regulating spring.
Install the product correctly after confirming
the direction of flow. "1 indicates the IN
and "2 indicates the OUT.
Check the supply pressure. Ensure that the
supply side ball valve is opened.
P17
P18
P18
P18
P22
P18
P22
P18
P18
P18
P18
1.
2.
P17
P17
P18
Clean the valve sliding surface of O-ring
and apply grease additionally.
Replace the valve spring.
Replace the valve assembly.
Remove the valve and eliminate foreign
materials.
When the condition is not improved,
replace the valve guide assembly and valve
assembly.
A ir l e a k a g e
P re
s s u re
1.
2.
3.
1.
2.
3.
4.
5.
4.
5.
3.
4.
The pressure
can not be
adjusted.
The set pressure
does not
become zero
even when the
knob is
loosened.
Air leaks from
the bonnet
exhaust port.
6.
6.
7.
Refer to sections [10. How to Replace the Components] (P17-24) and [11. Disassembly Drawing] (P25-27).
Category Failure
-16-
Trouble Possible cause Countermeasure
Page for
reference
Air leaks from
the bonnet
exhaust port.
B a c k w
a rd
f lo
w A
ir l e a k a g e
Foreign materials caught in the sliding
part of check valve, leading to
malfunction; or the check valve is fixed in
a closed position.
P22
Note) Fluorine grease is recommended when applying additional grease.
Air leaks from
between the
bonnet and the
body.
Air does not flow
backwards.
2. Replace the check valve assembly.
P8
P17
P17
Revise the air circuit so that back pressure
does not exceed the set pressure.
Fasten the bonnet.
Replace the diaphragm assembly.
Check the product number if backflow
function is equipped.
Back pressure exceeding the set
pressure is applied to the downstream.
Loosened bonnet screws.
Diaphragm is damaged.
Product without backflow function is
used.
7.
1.
2.
1.
10. How to Replace the Components
Warning
Before replacement, make sure that no pressure remains in the epuipment.
Also, make sure to loosen the knob of the regulator so that the set pressure is zero.
After replacement, confirm that the product satisfies specific functions and no external leakage occurs before operating it.
10-1. Diaphragm Assembly Replacement
-17-
1)
2)
3)
4)
5)
AR20
AR30
AR40
AR50
AR60
Disassembly
Assembly
Direction of diaphragm
assembly and pressure
regulating screw assembly
-
Remove the pressure regulating screw assembly,
pressure regulating spring, and diaphragm assembly
in that order.
Assemble the diaphragm assembly, pressure
regulating spring, and then pressure regulating screw
assembly.
Assemble the bonnet to the body.
While the convex side of the bonnet is facing the IN
side, mount it onto the body. Then tighten the 4
mounting screws temporarily, before tightening them
diagonally and evenly to fix the bonnet.
AR20/ AR30/ AR40
Phillips screwdriver
AR50/ AR60
Hexagon wrench
Nominal size: 5
-
-
Applicable
model
Work
category Procedure Tool Criteria
Loosen the knob completely before disassembly.
AR20/ AR30/ AR40
Phillips screwdriver
AR50/ AR60
Hexagon wrench
Nominal size: 5
Remove the 4 screws and remove the bonnet.
I N
OUT
Bonnet
Pressure regulating screw
assembly
Pressure regulating spring
(11) Diaphragm assembly
Body
Screws (4 pcs.) Diaphragm assembly (Cross section)
(Seating part of relief valve)
Knob
Tightening torque
AR20
AR30
AR40
AR50
AR60
2.35+/-0.3 N m
3.5 +/-0.3 N m
10-2. Valve Guide Assembly and Valve Assembly Replacement
-18-
Precision
screwdriver (-)
AR20
AR30
AR40
AR50
AR60
Disassembly
Assembly
After replacing the removed components with new
components, place them into the regulator. Assemble
the components in reverse order to the removal
procedure.
(See below for the mounting
direction of the components.)
6)
1)
2)
3)
4)
5)
Tool Criteria
Remove the cover.
Insert round pliers into the small holes of the cover
and rotate 45 degree to the left or right, then lift the
cover to remove.
Remove the cap.
Insert a precision screwdriver (-) between the body
and cap to lift the cap. Precision
screwdriver (-)
Round pliers
Nominal: 125
Applicable
model
Work
category Procedure
Remove the valve guide assembly.
Remove it while lifting the circumferential part with a
precision screwdriver.
Remove the valve spring.
Remove the valve assembly.
Cap
Cover
(12) Valve guide assembly
Valve spring
(10) Valve assemby
Regulator
Precision screwdriver (-) inlet
Cap
Round pliers inlet (4 holes)
I N
OUT
Valve sliding O-ring
(10) Valve assembly (upside down)
AR40-D/ AR50-D/ AR60-D
Mount the cover so that the protruded part faces towards the cap.
(Valve seat)
10-3. Square Embedded Type Pressure Gauge Replacement
Note) Applicable to the product with square embedded type pressure gauge (E).
-19-
Presence of the O-ring
Tightening torque:
0.85+/-0.05 N m
Tool Criteria
Phillips
screwdriver
Phillips
screwdriver
Assembly
5)
DisassemblyAR20
AR20K
AR30
AR30K
AR40
AR40K
AR50
AR50K
AR60
AR60K
Applicable
model
Work
category Procedure
Mount the pressure gauge cover.
Set the pressure gauge cover with its arrow on the
lower right corner. Mate the 2 fingers of the pressure
gauge cover with the 2 finger slits of the pressure
gauge, and rotate the pressure gauge cover 15
degrees to the opposite direction of the arrow
(clockwise).
Mount the pressure gauge.
Mount the pressure gauge to the regulator with the
mounting screws and tighten the screws referring to
the tightening torque specified in the right column.
Confirm that the O-ring is mounted onto the pressure
gauge.
When the O-ring comes out or is left on the regulator,
mount the O-ring to the pressure gauge correctly.
Remove the pressure gauge cover.
Rotate the pressure gauge cover 15 degrees in the
arrow direction (counterclockwise) and pull it out.
Remove the pressure gauge.
Remove the 2 mounting screws and remove the
pressure gauge.
1)
2)
3)
4)
(5) Pressure gauge cover assembly
Mounting screws
(2 pcs.)
Pressure gauge
O-ring
(5) Pressure gauge cover assembly
(4) Square embedded type pressure gauge
10-4. Right Angle Square Type Pressure Gauge Replacement
Note) Applicable to the product with right angle square type pressure gauge (J).
-20-
9 Confirm that the O-ring is mounted on the right angle
square type pressure gauge assembly. When the O-
ring has been dropped or is left on the product side,
mount the O-ring to the right angle square type
pressure gauge assembly again.
Presence of the O-ring
10 Mount the right angle square type pressure gauge
assembly. Insert the right angle square type pressure
gauge assembly until it makes contact with the
adapter. In that condition, insert the lock pin again to
the predetermined position.
Lock pin insertion condition
Mount the pressure gauge. Temporarily mount the
pressure gauge to the right angle adapter with the
mounting screws, and then tighten the screws to the
tightening torque specified in the right column to
secure the pressure gauge.
Phillips
screwdriver
Tightening torque:
0.32+/-0.05 N m
8 Mount the pressure gauge cover assembly. Engage
the two fingers of the pressure gauge cover assembly
with the two finger slits of the pressure gauge so that
the arrow on the cover assembly is pointing the lower
right, and rotate the pressure gauge cover by 15
degrees to the direction opposite to the arrow
(clockwise).
Assembly 5 Mount the adapter. Temporarily mount the adapter to
the product in the orientation shown in the figure
below by the mounting screws and tighten the screws
to the tightening torque specified in the right column,
to secure the adapter.
Phillips
screwdriver
Tightening torque:
0.6+/-0.05 N m
6 Confirm that the O-ring is mounted on the pressure
gauge. When the O-ring has been dropped or is left
on the right angle adapter side, mount the O-ring to
the pressure gauge again.
Presence of the O-ring
7
3 Remove the pressure gauge. Remove the two
mounting screws and dismount the pressure gauge
from the right angle adapter.
Phillips
screwdriver
4 Remove the adapter. Remove the two mounting
screws and dismount the adapter from the product. Phillips
screwdriver
2 Remove the pressure gauge cover assembly. Rotate
the pressure gauge cover assembly by 15 degrees in
the arrow direction (counterclockwise) and pull the
cover assembly toward you to dismount it.
Applicable
model
Work
category Procedure Tool Criteria
AR20
AR20K
AR30
AR30K
AR40
AR40K
Disassembly 1 Remove the right angle square type pressure gauge
assembly. Remove the lock pin by using a flat blade
screwdriver. Pull the right angle square type pressure
gauge assembly out from the product.
Precision
screwdriver (-)
Disassembly
Assembly
Lock pin insertion condition
* Insert the lock pin further than
the convex portion to prevent it falling out.
Mounting screws (2 pcs.)
O-ring
Lock pin
Adapter
(8) Right angle square type
pressure gauge assembly
Product
(7) Right angle square type
pressure gauge
(with mounting accessory)
Product
(5) Pressure gauge
cover assembly
Right angle adapter (8) Right angle square type
pressure gauge assembly
Pressure gauge
(6) Right angle square type
pressure gauge
O-ring
Mounting screws (2 pcs.)
10-5. Blanking Plate Assembly Replacement
Note) Applicable to the product with square type pressure gauge (E), right angle square type pressure gauge (J), or
digital pressure switch (E1 to E4).
Not applicable to the product with backflow function.
-21-
3)
Tool
Presence of the O-ring
Phillips
screwdriver
Tightening torque:
0.6+/-0.05 N m
Mount the blanking plate.
Mount the blanking plate to the product with the
mounting screws and tighten the screws referring to
the tightening torque specified in the right column.
Remove the blanking plate.
Remove the 2 mounting screws and remove the
blanking plate.
Confirm that the O-ring is mounted onto the blanking
plate.
When the O-ring comes out or is left on the regulator,
mount the O-ring to the blanking plate correctly.
Criteria
Disassembly
Assembly
AR20
AR30
AR40
AR50
AR60
Work
category Procedure
Phillips
screwdriver
Applicable
model
2)
1)
O-ring
Mounting screws (2 pcs.)
Blanking plate
Product
(14) Blanking plate assembly
10-6. Check Valve Assembly Replacement
Note) Applicable to the product with backflow function.
-22-
2)
1)
Tightening torque:
0.6+/-0.05 N m
Presence of the O-ring
Confirm that the O-ring is mounted onto the check
valve assembly.
When the O-ring comes out or is left on the regulator,
mount the O-ring to the check valve assembly
correctly.
Mount the check valve cover.
Mount the check valve cover to the product with the
mounting screws and tighten the screws referring to
the tightening torque specified in the right column.
Tool Criteria
Phillips
screwdriver
Phillips
screwdriver
Disassembly
Assembly
AR20K
AR30K
AR40K
AR50K
AR60K
Applicable
model
Work
category Procedure
Remove the check valve cover.
Remove the 2 mounting screws and the check valve
cover.
Remove the check valve assembly.
Remove the check valve assembly by pulling it
toward the operator.
4)
3)
O-ring2 pcs.)
Mounting screws (2 pcs.)
Check valve main assembly
Check valve cover
(16) Check valve assembly
Product
10-7. Plug (with O-ring) Replacement
Note) Applicable to the product without pressure gauge.
-23-
Assembly
Disassembly 1)
2)
Remove the plug (with O-ring).
Assemble the plug (with O-ring).
Hexagon wrench
(Nominal size: 4)
Tightening torque:
0.6+/-0.05 N m
Hexagon wrench
(Nominal size: 4)
Applicable
model
Work
category Procedure Tool Criteria
AR20
AR20K
AR30
AR30K
AR40
AR40K
AR50
AR50K
AR60
AR60K
(13) Plug (with O-ring)
Regulator (AR20-D / AR30-D / AR40-D/ AR50-D/ AR60-D)
Regulator (AR20K-D / AR30K-D / AR40K-D/ AR50K-D/ AR60K-D)
(13) Plug (with O-ring)
10-8. Plug Assembly Replacement
-24-
AR20K
AR30K
AR40K
AR50K
AR60K
Phillips
screwdriver
Phillips
screwdriver
Remove the plug assembly.
Remove the 2 mounting screws and remove the plug
assembly.
Confirm that the O-ring is mounted onto the
component "A".
When the O-ring comes out or is left on the regulator,
mount the O-ring to the component "A" correctly.
Assemble the plug assembly.
Assemble the plug assembly to the product with the
mounting screws and tighten the screws referring to
the tightening torque specified in the right column.
3)
2)
1)
Tightening torque:
0.6+/-0.05 N m
Presence of the O-ring
Applicable
model
Work
category Procedure Tool Criteria
Disassembly
Assembly
O-ring
Product
(15) Plug assembly
Component "A"
Mounting screws (2 pcs.)
11. Disassembly Drawing 11-1. AR20-D/ AR30-D/ AR40-D/ AR50-D/ AR60-D
-25-
Cross recessed
round head screws
(4 pcs.)
Bonnet
Pressure regulating screw assembly
Pressure regulating spring
(11) Diaphragm assembly
Body
(10) Valve assembly
Valve spring
(12) Valve guide assembly
Cover
Cap
I N
OUT
(Protrusion on IN side)
Washer (only for 50 and 60 sizes)
11-2. Disassembly Drawing of the Pressure Gauge Port [Applicable model: without pressure gauge / with pressure gauge (round type)]
11-3. Disassembly Drawing of the Pressure Gauge Port [Applicable model: with square embedded type pressure gauge /
right angle square type pressure gauge / with digital pressure switch]
- When the pressure gauge or the digital pressure switch is mounted on the back of the product, swap all parts for the front and back.
- When swapping (4) Square embedded type pressure gauge and (9) Digital pressure switch,
tighten them with 0.85+/-0.05Nm. Tighten others with 0.60.05Nm.
-26-
Product (3) Pressure gauge (round type)
Mounting screws (2 pcs.)
Mounting screws (2 pcs.)
Product
Note) Refer to the operation manual included in the product with digital pressure switch.
O-ring
(5) Pressure gauge cover assembly
(14) Blanking plate assembly
Blanking plate
pressure switch
Right angle
adapter
(9) Digital pressure switch
(4) Square embedded type pressure gauge
O-ring Pressure gauge
Mounting screws (2 pcs.)
O-ring
O-ring
Mounting screws (2 pcs.)
O-ringMounting screws (2 pcs.)
Lock pin
Adapter
(5) Pressure gauge cover assembly
(7) Right angle square type pressure gauge
(with mounting accessories)
Lock pin
Adapter
(8) Right angle square type
pressure gauge assembly
(6) Right angle square type pressure gauge
(13) Plug (with O-ring)
(13) Plug (with O-ring)
Pressure gauge
11-4. Disassembly Drawing of the Preassure Gauge Port [Applicable model: with backflow function]
- When the pressure gauge or the digital pressure switch is mounted on the back of the product, swap all parts for the front and back.
- When swapping (4) Square embedded type pressure gauge and (9) Digital pressure switch,
tighten them with 0.85+/-0.05Nm. Tighten others with 0.60.05Nm.
-27-
O-ring
(2 pcs.)
Product
Check valve cover Note) Refer to the operation manual included in the product with digital pressure switch.
(16) Check valve assembly
Mounting screws (2 pcs.)
(13) Plugwith O-ring
Pressure gauge adapter
Mounting screws (2 pcs.)
O-ring
Pressure
gauge
(4) Square embedded type pressure gauge
O-ring
O-ring
(3) Pressure gauge (round type)
(15) Plug assembly
Mounting screws (2 pcs.)
Mounting screws (2 pcs.)
Mounting screws (2 pcs.)
O-ring
O-ring
Mounting screws (2 pcs.)
pressure switch
(9) Digital pressure switch Lock pin
Adapter
Lock pin
Adapter
Right angle
adapter
(5) Pressure gauge cover assembly
(8) Right angle square type
pressure gauge assembly
(6) Right angle square type pressure gauge
(7) Right angle square type pressure gauge
(with mounting accessories)
(5) Pressure gauge cover assembly
Check valve main assembly
Pressure gauge
(17) Check vlave plug assembly
12. Domensions
12-1. Standard (with round type pressure gauge)
Dimensions
Model
P2 J K J H J J
AR20-D 1/8 40 66.8 26.5 21 21 2 37.5 57.5 37.5 58.5 37.5 58.5
AR30-D 1/8 53 86.5 30.5 26.5 26.5 3.5 37.5 63 37.5 64 37.5 64
AR40-D 1/8 70 91.5 35.5 35.5 35.5 - 42.5 73 42.5 73 42.5 73
AR40-06-D 1/8 75 93 35.5 35.5 35.5 - 42.5 73 42.5 73 42.5 73
AR50-D 1/8 90 125 43 45 45 - 42.5 82.5 42.5 82.5 42.5 82.5
AR60-D 1/8 95 155 45 45 45 - 42.5 82.5 42.5 82.5 42.5 82.5
Q R U
AR20-D 30 34 43.9 5.4 15.4 55 2.3 24.7 28.5 14 6
AR30-D 41 40 46 6.5 8 53 2.3 31.3 38.5 19 7
AR40-D 50 54 54 8.5 10.5 70 2.3 35.5 42.5 21 7
AR40-06-D 50 54 55.5 8.5 10.5 70 2.3 37 42.5 21 7
AR50-D 70 75 66 11 22 113 3.2 - - - -
AR60-D 70 75 66 11 22 113 3.2 - - - -
-28-
3/4, 1 -
1 -
3/4 M421.5
Standard specifications Round type
pressure gauge
(Semi-standard: Z)
The dimension of B is the length when the regulator knob is unlocked.
Optional specifications
Round type
pressure gauge
Round type
pressure gauge
(with color zone)
Bracket mountModel
Optional specifications
Panel mount
1/8, 1/4
1/4, 3/8
1/4, 3/8, 1/2 M421.5
M381.5
M281
P1
Plate thickness
AR20/30-D: Max.3.5
AR40-D: Max.5
Panel mounting dimensions
(Pressure gauge port size)
(Port size)
12-2. Standard
Dimensions
Model
K J H J J
AR20-D 40 66.8 26.5 26 2 28 27 28 54.3 27.8 37.5
AR30-D 53 86.5 30.5 31.5 3.5 28 32.5 28 59.8 27.8 43
AR40-D 70 91.5 35.5 40.5 - 28 41.5 28 68.8 27.8 52
AR40-06-D 75 93 35.5 40.5 - 28 41.5 28 68.8 27.8 52
AR50-D 90 125 43 45 - 28 51 - - 27.8 61.5
AR60-D 95 155 45 50 - 28 51 - - 27.8 61.5
Q R U
AR20-D 30 34 43.9 5.4 15.4 55 2.3 24.7 28.5 14 6
AR30-D 41 40 46 6.5 8 53 2.3 31.3 38.5 19 7
AR40-D 50 54 54 8.5 10.5 70 2.3 35.5 42.5 21 7
AR40-06-D 50 54 55.5 8.5 10.5 70 2.3 37 42.5 21 7
AR50-D 70 75 66 11 22 113 3.2 - - - -
AR60-D 70 75 66 11 22 113 3.2 - - - -
-29-
(With square embedded type pressure gauge,
right angle square type pressure gauge or digital pressure switch)
3/4
square embedded
type pressure gauge
M421.5
M381.5
1/4, 3/8, 1/2
-
Standard specifications Digital
pressure switch
Optional specifications
1/8, 1/4
3/4, 1 -
P1
Right angle square
type pressure gauge
The dimension of B is the length when the regulator knob is unlocked.
M281
Model
Optional specifications
M421.5
Bracket mount Panel mount
1
1/4, 3/8
Plate thickness
AR20/AR30-D: Max.3.5
AR40-D: Max.5
Panel mounting dimensions
(Port size)
12-3. With backflow function (with round type pressure gauge, square embedded type pressure gauge, right angle square type pressure gauge or digital pressure switch)
Dimensions
Model
P2 J K J H J J J H J
AR20K-D 1/8 40 66.8 26.5 26 26 2 37.5 62.5 37.5 63.5 37.5 63.5 28 27 28 54.3
AR30K-D 1/8 53 86.5 30.5 31.5 31.5 3.5 37.5 68 37.5 69 37.5 69 28 32.5 28 59.8
AR40K-D 1/8 70 91.5 35.5 40.5 40.5 - 42.5 78 42.5 78 42.5 78 28 41.5 28 68.8
AR40K-06-D 1/8 75 93 35.5 40.5 40.5 - 42.5 78 42.5 78 42.5 78 28 41.5 28 68.8
AR50K-D 1/8 90 125 43 50 50 - 42.5 87.5 42.5 87.5 42.5 87.5 28 51 - -
AR60K-D 1/8 95 155 45 50 50 - 42.5 87.5 42.5 87.5 42.5 87.5 28 51 - -
J Q R U
AR20K-D 27.8 37.5 30 34 43.9 5.4 15.4 55 2.3 24.7 28.5 14 6
AR30K-D 27.8 43 41 40 46 6.5 8 53 2.3 31.3 38.5 19 7
AR40K-D 27.8 52 50 54 54 8.5 10.5 70 2.3 35.5 42.5 21 7
AR40K-06-D 27.8 52 50 54 55.5 8.5 10.5 70 2.3 37 42.5 21 7
AR50K-D 27.8 61.5 70 75 66 11 22 113 3.2 - - - -
AR60K-D 27.8 61.5 70 75 66 11 22 113 3.2 - - - -
1/8, 1/4
3/4
-
Round type
pressure gauge
M281
The dimension of B is the length when the regulator knob is unlocked.
-
M421.5
3/4, 1
Digital
pressure switch
Optional specifications
Bracket mount Panel mount
-30-
1/4, 3/8, 1/2 M421.5
Model
Round type
pressure gauge
(Semi-standard: Z)
M381.5
P1
1/4, 3/8
1
Optional specifications
square embedded
type pressure gauge
Standard specifications Right angle square
type pressure gauge
Round type
pressure gauge
(with color zone)
Panel thickness
AR20K/AR30K-D: Max.3.5
AR40K-D: Max.5
Panel mounting dimensions
(Port size)
(Pressure gauge port size)
P2
Revision history
40-06,50,60 size added, Corrected.
Dec. 2020.
Right angle square type pressure gauge
Added.
Apr. 2022.
4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 URL https://www.smcworld.com Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer. 2019 SMC Corporatio
Related manuals for SMC AR20-D Regulator Operation Manual
Manualsnet FAQs
If you want to find out how the AR20-D SMC works, you can view and download the SMC AR20-D Regulator Operation Manual on the Manualsnet website.
Yes, we have the Operation Manual for SMC AR20-D as well as other SMC manuals. All you need to do is to use our search bar and find the user manual that you are looking for.
The Operation Manual should include all the details that are needed to use a SMC AR20-D. Full manuals and user guide PDFs can be downloaded from Manualsnet.com.
The best way to navigate the SMC AR20-D Regulator Operation Manual is by checking the Table of Contents at the top of the page where available. This allows you to navigate a manual by jumping to the section you are looking for.
This SMC AR20-D Regulator Operation Manual consists of sections like Table of Contents, to name a few. For easier navigation, use the Table of Contents in the upper left corner.
You can download SMC AR20-D Regulator Operation Manual free of charge simply by clicking the “download” button in the upper right corner of any manuals page. This feature allows you to download any manual in a couple of seconds and is generally in PDF format. You can also save a manual for later by adding it to your saved documents in the user profile.
To be able to print SMC AR20-D Regulator Operation Manual, simply download the document to your computer. Once downloaded, open the PDF file and print the SMC AR20-D Regulator Operation Manual as you would any other document. This can usually be achieved by clicking on “File” and then “Print” from the menu bar.