SMC Networks IP8000 User manual

CAT.ES60-18 A
Electro-Pneumatic Positioner
Series IP8000/8100
(Lever type) (Rotary type)
EXH.AIR
Folk lever joints (Rotary type)
Can absorb off-centering.
A span adjuster achieves 1/2 split range
Opening current transmission (4 to 20mA DC)
Can detect remote position. Non-explosion proof rotary type only.
Mounting dimensions are same as convention
types, series IP6000/6100.
Spring pin
Actuator main shaft
100 mm 10 0 mm
External scale plate (Rotary type)
Improved visibility of
opening indicator
Pressure gauge (O. D. ø43)
Enlarged O.D.
allows improved
visibility.
With terminal box (Explosion proof)
No terminal box (non-explosion proof) is available.
Vibration resistance : No resonances
5to 200Hz
Dust resistance : Conforms to
JIS F8007 IP65
Vibration resistance : No resonances
5to 200Hz
Dust resistance : Conforms to
JIS F8007 IP65
A centralized exhaust
system employs the
combination of the check
valve and the labyrinth
effect enhancing both dust
resistance and water
resistance performance.
(shortened by 13%y 13%
compared with IP6100)compared with IP6100)
100mm in height
(shortened by 13%y 13%
compared with IP6100)compared with IP6100)
10 0 mm in height
(shortened by 13%
compared with IP6100)

IP8 000000
MPa
MPa
OUT2
ELECTORO PNEUMATIC IP8000
POSITIONER
MPa
MPa
OUT2
ELECTORO PNEUMATIC IP8000
POSITIONER
MPa
SMC
MPa
SMC
How to Order
Series IP8000/8100
Electro-Pneumatic Positioner
Type
000
100
Lever type feedback
Rotary type
Pressure gauge
0
1
2
3
None
0.2MPa
0.3MPa
1.0MPa
Nil
A
Note 3)
B
Note 3)
C
D
E
Note 4)
F
Note 4)
G
Note 5)
H
J
Note 6)
None (Standard)
ø0.7 Output restriction with pilot valve
ø1.0 Output restriction with pilot valve
Fork lever joint M
Fork lever joint S
For stroke 35 to 100mm with lever unit
For stroke 50 to 140mm with lever unit
Compensation spring (A)
With external scale plate
With opening current transmission (4 to 20mA DC)
IP8000 has standard lever for stroke (10 to 85mm)
Accessory for IP8000, 8100
small capacity actuator
Accessory for IP8100
Accessory for IP8000
For IP8000, 8100
Accessory for IP8100
Accessory for IP8100
Accessories Note 2)
Construction
0
No terminal box
1 Note 1)
With terminal box
(Exsd BT5)
Note 1) For construction No.1(with terminal box), the ambient and fluid temperatures are as follows:
•Exd BT5 –20 to 60°C
•Non-explosion proof (non hazardous Iocations only) –20 to 80°C
The positioner body is EXd BT5 labeled.
Note 2) If two or more accessories are required, the part numbers should be made according to
alphabetical order. (ex. IP8000-011-AG)
Note 3) “A” is applied to approx 90cm3-capacity actuator.
“B” is applied to approx 180cm3-capacity actuator.
Note 4) Standard lever is not attached.
Note 5) It is to be used together with “A” or “B” when tending to overshoot by the use of “A” or “B”.
It is mounted to the body as a replacement of the standard compensation spring.
Note 6) With terminal box, Non-explosion proof. Select “1” for the construction.
Specifications
Type
Input current
Input resistance
Supply air pressure
Standard stroke
Sensitivity
Linearity
Hysteresis
Repeatability
Coefficient of temperature
Supply pressure fluctuation
Output flow
Air consumption
Ambient and fluid
temperature
Explosion proof
construction
Air port
Electrial connection
Wiring method
Exterior covering enclosure
Material
Weight
Item
Lever type lever feedback Rotary type cam feedback
Single action Double action Single action Double action
4 to 20mADC Note 1)
235±15Ω(4 to 20mADC)
0.14 to 0.7MPa
10 to 85mm (Deflection angle 10 to 30°) 60 to 100°Note 2)
Within 0.1%F.S . Within 0.5%F.S.
Within ±1%F.S. Within ±2%F.S.
Within 0.75%F.S. Within 1%F.S.
Within 0.5%F.S.
Within 0.1%F.S. / °C
Within 0.3%F.S./0.01MPa
80l/min (ANR) or more (SUP = 0.14MPa)
200l/min (ANR) or more (SUP = 0.4MPa)
5l/min (ANR) or less (SUP = 0.14MPa)
11l/min (ANR) or less (SUP = 0.4MPa)
–20 to 80°C (Non-explosion proof)
–20 to 60°C (Flame proof and explosion proof)
Flame proof and explosion proof construction: Exd BT5
(Certificate number: C15916 of Technology lnstitution of Industrial Safety)
Rc 1/4 female
G 1/2 female
Flame proof packing system, Sealant fitting system (explosion-proof)
Resin G 1/2 connector (Non-Explosion proof, option)
JISF8007, IP65 (conforms to IEC Pub.529)
Aluminum diecast body / epoxy resin
With terminal box 2.6kg (None 2.4kg)
IP8000 IP8100
Note 1) 1/2 Sprit range (Standard)
Note 2) Stroke adjustment: 0 to 60°C, 0 to 100°C
Explosion Proof
This product has the following approvals.
Exd BT5: Newly established standard based on
international (IEC 79)
Use as Exd BT5
(A) Pressure-proof packing.
As shown below in the chart, use “Cable gland” (option).
(B) Metal Piping.
Attach the sealant fitting near the cable port.
(For details, refer to “The guideline on electric equipment
explosion proof” published by the Technology Institution
of Industrial Safety.)
Pressure proof packing connector unit
Cable
Packing
Lock screw
(Hexagon 1.5)
Cable gland with flame proof packing (Option)
Part name
Flame proof packing
connector unit
Part number
P368010-32
P368010-33
Suited cable outer diameter
ø7.0 to ø10.0
ø10.1 to ø12.0
1

SMC
MPa
SMC
MPa
SUP
OU
A
M
SPAN
ELECTOROPNEUMATICIP8000
POSITIONER
Series IP8000 / 8100
Electro-Pneumatic Positioner
Accessory / Option
Pilot valve with output restriction (IP8000, 8100 type)
In general, mounting on a small-size actuator may cause hunting. For
prevention, a pilot valve with a built-in output restriction is available.
The restriction is removable.
Actuator Capacity
90cm3
180cm3
Orifice size
ø0.7
ø1
Part number
P36801080
P36801081
Pilot unit part number
P565010-18
P565010-19
Fork lever joints (IP8100 type)
Two types of the fork lever joints are available dependent upon
different mounting dimensions.
This is recommended because it can absorb off-centering, compared
with direct mounting type.
M8 x 1.25
Side mounting with the fork
lever assembly M
63
(S type: 39)
L1=101
(S type: 77)
Actuator main shaft
Side mounting with the fork
lever assembly S
39 (M type: 63)
L2=31
(M type: 55)
Actuator main shaft
M8 x 1.25
External feedback lever (IP8000 type)
Stroke
10 to 85mm (Accessory “Nil”)
35 to 100mm (Accessory “E”)
50 to 140mm (Accessory “F”)
Unit number
P368010-20
P368010-21
P368010-22
Size M
125
110
110
Size N
150
195
275
Different feedback levers are available dependent upon valve
strokes. Consult with SMC in case of 10mm or less stroke.
Resin connector (Non-explosion proof specification)
Optional cable connectors are available for different cable sizes.
These are not for explosion proof applications.
16
6.1
N
M5
Part name
Fork lever assembly M
Fork lever assembly S
Part number
P368010-24
P368010-25
Part name
Resin-made cable clamp unit (A)
Resin-made cable clamp unit (B)
Part number
P368010-26
P368010-27
Suited cable outer diameter
ø7 to ø9
ø9 to ø11
Cable connector G1/2
Exploded View
Description
Pilot valve unit
Base seal
Cover seal
No.
1
2
3
Part no.
P565010-7
P56501012-3
P56501013
Note
IP8000/8100
Replacement Parts
(2) Base seal
Terminal joint unit
(No terminal box)
Terminal box unit
Body unit
Feedback
lever unit
Feedback shaft assembly
Mini-terminal unit (No terminal box)
(3) Cover seal
Body cover unit
Torque motor unit
Feedback spring
Compensation spring
(1) Pilot valve unit
Zero adjusting unit
Span adjusting unit
Cable connector (option)
2

Series IP8000/8100
Piping
IP8000 / Lever type
Positive operationReverse operation
Double actionSingle action
When the input signal is increased, the stem
moves as allow mark.
When the input signal is increased, the stem
moves as allow mark.
When the input signal is increased, the stem
moves as allow mark.
(Reverse valve operation by its positive
operation mode)
When the input signal is increased, the stem
moves as allow mark.
(Positive valve operation by its reverse
operation mode)
OUT2 is plugged.
X
OUT1
SUP
IN
-
+
OUT1 is plugged.
X
OUT2
SUP
Span adjusting lever
reverse position
Span adjusting lever
reverse position
Span adjusting lever
reverse position
IN
-
+
OUT1 is plugged.
X
OUT2
SUP
Span adjusting lever
normal position
Span adjusting lever
normal position
IN
-
+
OUT1
OUT2 is plugged.
X
SUP
Span adjusting lever
normal position
IN
-
+
When the input signal is increased, the
cylinder rod moves as allow mark.
When the input signal is increased, the
cylinder rod moves as allow mark.
OUT1
OUT2
SUP
IN
-
+
OUT1
OUT2
SUP
IN
-
+
IP8100 / Rotary type
When the input signal is increased, the
actuator shaft rotates in a clockwise direction.
Single action
When the input signal is increased, the
actuator shaft rotates in a clockwise direction.
(Positive valve operation by its reverse
operation
mode)
When the input signal is increased, the actuator
shaft rotates in a counter clockwise direction.
When the input signal is increased, the actuator
shaft rotates in a counter clockwise direction.
(Reverse valve operation by its positive
operation
mode)
Main shaft
Single action actuator
The cam of the
positioner
should be set on
the RA surface.
OUT2 is plugged.
X
OUT1
IN
-
+
SUP
The cam of the
positioner
should be set on
the RA surface.
OUT1 is plugged.
X
Main shaft
Single action actuator
OUT2
IN
-
+
SUP
Main shaft
Single action actuator
OUT2
The cam of the
positioner
should be set on
the DA surface.
OUT1 is plugged.
IN
-
+
SUP
X
The cam of the
positioner
should be set on
the DA surface.
OUT2 is plugged.
Main shaft
Single action actuator
OUT1
IN
-
+
SUP
X
Positive operationReverse operation
Double action
When the input signal is increased, the
actuator shaft rotates in a clockwise direction.
When the input signal is increased, the actuator
shaft rotates in a counter clockwise direction.
The cam of the
positioner
should be set on
the RA surface.
OUT1
Main shaft Double
action actuator
OUT2
IN
-
+
SUP
The cam of the
positioner
should be set on
the DA surface.
OUT2
Main shaft Double
action actuator
OUT1
IN
-
+
SUP
3

4
Series IP8000 / 8100
Electro-Pneumatic Positioner
Installation
IP8000 type (Lever type lever feedback)
2A connecting fitting or pin to transfer the displacement of valve
stem should be mounted at a position so that the feedback
lever is at right angles to the valve stem for an input current of
50%. The right figure is the configuration viewed from the front.
1The unit should be mounted using bolts firmly fixed through
mounting holes on the side or back of the positioner.
1The positioner should be mounted so that the feedback shaft
is aligned with the shaft of the rotary actuator.
IP8100 type (Rotary type cam feedback)
Positioner
Backlash eliminating spring
Feedback lever
Positioner body
Right angle
Connecting fitting
Valve stem
With front bracket
With L-type bracket
Bracket
Positioner
Bracket
Bracket
Positioner
Bracket
Input current 100% position
Input current 50% position
Input current 0% position
(Or 100%)
(Or 0%)
Bracket
OUT2
OUT1 OUT2 OUT1
Installation using the thread
on the back of positioner
Installation using the thread
on the side of positioner
Direct mounting to diaphragm
Mounting examples

MA
E
When the input current increases, (11) the plate spring of (12) the torque motor
will work as a pivot, (13) armature will receive a counter clockwise torque, (4)
the counter weight will be pushed to the left, the clearance between (6) the
nozzle and (5) the flapper will increase, and the nozzle back pressure will
decrease. Consequently, (7) the exhaust valve of (1) the pilot valve moves to
the right, the output pressure of OUT1 increases and (15) the diaphragm
moves downwards. The motion of (15) the diaphragm acts on (10) the
feedback spring through (8) the feedback lever, (14) the transmission lever
and (9) the span adjustment lever to rest at the balance position generated by
the input current. (2) The compensation spring is for direct feedback of the
motion of (7) the exhaust valve to (4) the counter weight to increase the
stability of the loop. The zero point should be adjusted by change of (3) the
zero adjustment spring tention.
Series IP8000/8100
Principle of Operation
IP8000 / Lever type
Block diagram
Single action positive operation
X
SUP OUT2 OUT1
X View
Stopper screw
(Do not move)
(1) Pilot valve
Supply valve B
EXH.
(4) Counter weight
Zero adjusting screw
(3) Zero adjusting spring
(2) Compensation spring
Diaphragm
(5) Flapper
(6) Nozzle
Input current terminal
Automatic / Manual
change-over screw
(Built-in bleed
restriction)
Sensitivity adjusting screw
(Adjusts GAIN)
Supply valve A
(9)
Span adjusting lever
(7) Exhaust
valve
(8) Feedback lever
(15) Diaphragm valve
Span adjusting
lever shaft
Transmission pin
Lock screw
Span adjusting screw
(14) Transmission lever
For reverse position, exchange
the shaft of the span adjusting
lever to the opposite side. The
span adjusting screw faces
upward in this condition.
(See “Piping”)
(11) Plate spring
(10) Feedback spring
(13) Armature
(12) Torque motor
SUP
--
++
()
Zero adjusting
spring
Torque motor
IN
Current
Restriction
Nozzle
flapper Diaphragm
Compensatory
spring
Feedback
spring
Exhaust valve Supply valve
Span adjusting
lever
Feedback
lever
Diaphragm
valve
OUT
Stem
stroke
5

MA
Series IP8000 / 8100
Electro-Pneumatic Positioner
IP8100 / Rotary type
Double action positive operation
When the input current increases, (12) the plate spring of (13) the torque motor will
work as a pivot, (14) armature will receive a counter-clockwise torque, (4) the
counter weight will be pushed to the left and the clearance between (6) the nozzle
and (5) the flapper will increase, and the nozzle back pressure will decrease.
Consequently, (7) the exhaust valve of (1) the pilot valve moves to the right, the
output pressure of OUT1 increases that of OUT2 decreases and (16) the rotary
actuator moves. The motion of (16) the actuator acts on (10) the feedback spring
through (11) the feedback shaft, (8) the cam, (9) the span adjustment lever and
(15) transmission lever to rest at the balance position generated by the input
current. (8) the cam is set on the DA surface and operates positively while (16) the
oscillating actuator shaft rotates in a clockwise direction when the input signal is
increased. (2) The compensation spring is for direct feedback of the motion of (7)
the exhaust valve to (4) the counter weight to increase the stability of the loop. The
zero point should be adjusted by change of (3) the zero adjustment spring tension.
X View
X
EXH.
SUP OUT2 OUT1
Stopper screw
(Do not move)
(1) Pilot valve
Supply valve B
(4) Counter weight
E
Zero adjusting screw
(3) Zero adjusting spring
(2) Compensation spring
Input current terminal
Automatic / Manual change-over screw
(Built-in bleed restriction)
Sensitivity adjusting screw
(Adjusts GAIN)
Supply valve A
(7) Exhaust
valve
Diaphragm
(9)
Span adjusting lever
(12) Plate spring
(13) Torque motor
(14) Armature
(11) Feedback shaft
(10) Feedback spring
(8) Cam
Pairing
(15) Transmission lever
Fork joint
For reverse position, set
by turning over the cam
and reversing connections
of outlets OUT1 and OUT2.
(16) Oscillating
actuator
--
++
SUP
IN
Current
Zero adjusting
spring
Torque motor
Restriction ()
Block diagram
Nozzle
flapper
Feedback
spring
Diaphragm
Compensatory
spring
Span adjusting
lever Cam
Exhaust valve Supply valve
Angle of
rotation
OUT
Feedback
shaft
Oscillating
actuator
(5) Flapper
(6) Nozzle
6

Series IP8000/8100
MPa
MPa
{ }
{ }
{ }
{ }
1E
OUT2
ELECTORO PNEUMATIC IP8000
POSITIONER
E
MPa
MPa
OUT2
ELECTORO PNEUMATIC IP8000
POSITIONER
Dimensions / IP8000 (Lever type)
IP8000-0첸0 (No terminal box)
110
38
OUT2.Rc1/4
With plug
35
39 11
38
OUT1.Rc1/4
SUP.Rc1/4
A
G1/2
Electric conduit
122
198
43
23.5
939
117
147
Approx.194
125
65
20
150
125
5
42
50
16
6.1
2 x M8 x 1.25 depth12
(Female thread
for side mounting)
4 x M8 x 1.25 depth12
(Female thread for rear mounting)
View A
23.5 58
110
192
40
35
22.5
At accessory “E”: 110
At accessory “F”: 110
At accessory “E”: 195
At accessory “F”: 275
At accessory “E”: 110
At accessory “F”: 110
At accessory “E”: 195
At accessory “F”: 275
46
30
2
14
100
With optional resin cable clamp
Applicable cable O. D. ø7 to 9:P368010-26
Applicable cable O. D. ø9 to 11:P368010-27
IP8000-0첸1 (With terminal box)
OUT2.Rc1/4
With plug 110
38
60
30
2
14
100
42
162
117
218
939
43 23.5
125
12 168
8
39 11
38
20
50
16
6.1
A
150
125
OUT1.Rc1/4
SUP.Rc1/4
122
58
192
23.5
11040
35
65
5
View A
4 x M8 x 1.25 depth12
(Female thread for rear mounting)
2 x M8 x 1.25 depth12
(Female thread
for side mounting)
Electric conduit 2 x G1/2
22.5
7

25%
100%
75%
DA
50%
0%
MPa
MPa
1E
OUT2
ELECTORO PNEUMATIC IP8100
POSITIONER
25%
100%
75%
DA
50%
0%
MPa
MPa
E
OUT2
ELECTORO PNEUMATIC IP8100
POSITIONER
Series IP8000 / 8100
Electro-Pneumatic Positioner
Dimensions / IP8100 (Rotary type)
IP8100-0첸0 (No terminal box)
231
198
147
117
Approx.194
35
939
43 23.5
39 11
38
38
110
125
At accessory “H”: (with external scale plate)
G1/2
Electric conduit
OUT1.Rc1/4
SUP.Rc1/4
OUT2.Rc1/4
With optional resin cable clamp
Applicable cable O. D. ø7 to 9:P368010-26
Applicable cable O. D. ø9 to 11:P368010-27
A
46
15
122
4250
20
58
192
23.5
100
11040
35
65
22.5
44
2 x M8 x 1.25 depth12
Female for side mounting
4 x M8 x 1.25 depth12
Female for rear mounting
View A
IP8100-0첸1 (With terminal box)
251
46
15
122
50 42
20
60
58
218
162
117
939
43 23.5
192
23.5
100
8
39 11
38
38
110
11040
35
65
22.5
44
125
12 168
At accessory “H”: (with external scale plate)
2 x M8 x 1.25 depth12
Female thread for side mounting
2 x G1/2
Electric
conduit
4 x M8 x 1.25 depth12
Female thread for rear mounting
OUT1.Rc1/4
SUP.Rc1/4
View A
OUT2.Rc1/4
A
8

Series IP8000/8100
Safety Instructions
Note 1) ISO 4414: Pneumatic fluid power -- General rules relating to systems
Note 2) JIS B 8370: Pneumatic system axiom
Warning
Caution : Operator error could result in injury or equipment damage.
Warning : Operator error could result in serious injury or loss of life.
Danger :
In extreme conditions, there is a possible result of serious injury or loss of life.
These safety instructions are intended to prevent a hazardous situation and/or
equipment damage. These instructions indicate the level of potential hazard by a
label of "Caution", "Warning" or "Danger". To ensure safety, be sure to observe
ISO 4414
Note 1),JIS B 8370 Note 2) and other safety practices.
1. The compatibility of pneumatic equipment is the responsibility of the person
who designs the pneumatic system or decides its specifications.
Since the products specified here are used in various operating conditions, their compatibility with the
specific pneumatic system must be based on specifications or after analysis and/or tests to meet your
specific requirements. The expected performance and safety assurance will be the responsibility of the
person who has determined the compatibility of the system. This person should continuously review the
suitability of all items specified, referring to the latest catalog information with a view to giving due
consideration to any possibility of equipment failure when configuring a system.
2. Only trained personnel should operate pneumatically operated machinery and
equipment.
Compressed air can be dangerous if handled incorrectly. Assembly, handling or maintenance of
pneumatic systems should be performed by trained and experienced operators.
3. Do not service machinery/equipment or attempt to remove components until
safety is confirmed.
1. Inspection and maintenance of machinery/equipment should only be performed once measures to
prevent falling or runaway of the driven object have been confirmed.
2. When equipment is to be removed, confirm the safety process as mentioned above. Cut the supply
pressure for this equipment and exhaust all residual compressed air in the system.
3. Before machinery/equipment is restarted, take measures to prevent shooting-out of cylinder piston
rod, etc. (Bleed air into the system gradually to create back pressure.)
4. Contact SMC if the product is to be used in any of the following conditions:
1. Conditions and environments beyond the given specifications, or if product is used outdoors.
2. Installation on equipment in conjunction with atomic energy, railway, air navigation, vehicles, medical
equipment, food and beverages, recreation equipment, emergency stop circuits, clutch and brake
circuit in press applications, or safety equipment.
3. An application which has the possibility of having negative effects on people, property, or animals,
requiring special safety analysis.
9

Series IP8000/8100
Electro-Pneumatic Positioner Precautions
Be sure to read before handling.
Operation Maintenance
Handling
Air Supply
Operating Environment
Warning
Caution
Caution
Caution
Warning
Caution
1. Do not operate the positioner outside the specified range as this may cause
problems. (Refer to the specifications.)
2. Design the system to include a safety circuit to avoid the risk of danger
should the positioner suffer failure.
3. Be sure that exterior lead-in wiring to the terminal box is based on the
guidelines for explosion-protection of manufactory electric equipment when
being used as a flame proof, explosion proof construction.
4. Do not remove terminal cover in a hazardous location while the power is on.
5. Covers for the terminal and body should be in place while operating.
1. Avoid impact to the positioner body or torque motor and any excessive
force to the armature, as these actions may cause damage to the product.
Handle carefully while transporting and operating.
2. When exposed to possible moisture invasion, please take the necessary
measures. For example, if the positioner is left on-site for long periods, a
plug should be put in the piping port and an external cover fitted to avoid
water penetration.
Take measures to avoid dew condensation inside the positioner if
exposed to high temperature and humidity. Take enough measures
against condensation especially when packing for export.
3. Keep magnetic field off the positioner, as this affects its characteristics.
1. Use only dehumidified and dust-extracted clean compressed clean air as
the positioner contains extra-fine orifices such as restrictor and nozzle.
Do not use a lubricator.
2. Do not use compressed air containing chemicals, organic solvents, salinity
or corrosive gases, as this may cause malfunction.
3. Use dehumidified and dust-extracted clean compressed air as an air supply.
4. When operating below the freezing point, protect the positioner from
freezing.
1. Do not operate in locations with an atmosphere of corrosive gases,
chemicals, sea water, or where these substances will adhere to the regulator.
2. Do not operate in locations where excessive vibration or impact occurs.
3. Do not operate out of the indicated operation temperature range to avoid
deterioration of the seals, as this may cause possible positioner problems.
1. After installation, repair or disassembly, connect compressed air and
conduct tests to confirm appropriate function and leakage.
Do not use the positioner when noise from the bleeder sounds louder
compared with the initial state, or when it does not operate normally. If
these occur, check immediately if assembled and mounted correctly.
Never modify electrical construction to maintain explosion-proof construction.
1. Confirm whether the compressed air is clean.
Dust, oil, or moisture mixed within the equipment may result in
malfunction and positioner problems. Perform periodic
inspection of the air preparation equipment to ensure clean air is
always supplied.
2. Improper handling of compressed air is dangerous. Not only observing the
product specifications, but also replacement of elements and other
maintenance activities should be performed by personnel having sufficient
knowledge and experience pertaining to instrumentation equipment.
3. Perform annual inspections of the positioner.
Replace badly damaged seals and units such as diaphragm and
O-ring during the inspection.
When used in tough environmental and/or service conditions
such as seaside locations, replacements should be undertaken
more frequently.
4. When performing inspections, demounting the positioner, or replacing the
elements with the positioner still in its mounted position, first, stop the
compressed air, then exhaust the residual pressure before undertaking
operation.
5. Should the restrictor become clogged with carbon particles, etc., demount
automatic/manual change-over screw (with built-in restrictor) and clean it
using a ø0.2 wire.
Stop the compressed air and remove the screw to switch the
pilot valve off before replacing the restrictor.
6. Apply just a small amount of grease to sliding parts (O-ring and exhaust
valve) when disassemble a pilot valve.
Use silicone grease, for example, SH45 produced by Du Pond-
Toray Co., Ltd.
7. Confirm air leakage from compressed air piping and junctions.
Air leakage from air piping results in reduced operational
performance and a decline of characteristics, etc.
It is structurally necessary for air to be released from the
bleeder, it is not abnormal as long as the air consumption is
within the specified range.
10
Subject to Change