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Operating and maintenance manual
ARCAPAQ
®
pneumatic piston actuator
Series 812-DWK
03.2020 / 1.0
Original instructions
© ARCA Regler GmbH. All rights reserved.
Cover picture background: Freepik.com
ARCA Regler GmbH Table of contents
Table of contents
Series 812-DWK 03.2020 / 1.0
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Table of contents
ARCA Regler GmbH
4 / 32 03.2020 / 1.0
Series 812-DWK
ARCA Regler GmbH
Manufacturer's address
1
1.1
1.2
1.3
1.4
1.5
1 General data
General data
This operating manual contains instructions that enable the product to be safely and properly installed, put into operation and maintained.
The target group for this operating manual is exclusively specially trained and authorised technical personnel.
Please contact the manufacturer if you encounter problems that cannot be solved with the aid of this operating manual.
The product is subject to technical changes at any time.
Validity of the manual
This operating manual applies to the product in the version described in the device pass.
Contact details
Further information about the product can be obtained from:
ARCA Regler GmbH
Kempener Str. 18
D-47918 Tönisvorst
Tel.: +49 (0) 2156-7709-0
Fax: +49 (0) 2156-7709-55
E-mail: [email protected]
www.arca-valve.com
Other applicable documents
The product can be delivered as part of an actuator and equipped with additional components that are described in their own operating manuals. The instructions as well as the warning and safety information contained therein must also be observed.
Furthermore, the following documents apply in addition to this operating manual.
▪ Device pass
▪ Installation drawing
Place of storage of the manual
The operating manual and all other applicable documents are part of the product. They must be kept in the immediate vicinity of the product and must be accessible to the personnel at all times.
ARCA ONSITE
Acceptance documents (if ordered) and operating documentation for this product can be downloaded from the ARCA ONSITE portal.
Two options are available here:
1. Scan the QR Code ¹ on the product. Further entries are not required.
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1 General data
Entry example
ARCA Regler GmbH
2. Visit the website https://onsite.arca-valve.com/search and enter the ARCA order no. and ARCA serial no. The order no. and serial no.
can be found in the device pass and in our order confirmation.
Illustration 1: ARCA ONSITE
¹ QR Code is a registered trademark of DENSO WAVE INCORPOR-
ATED
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Series 812-DWK
ARCA Regler GmbH
2
2.1
2.2
2 Safety
Safety
General safety information
The operating manual contains detailed descriptions for the safe installation, commissioning and maintenance of the product.
▪ Read this operating manual attentively in its entirety in order to familiarise yourself with the product.
▪ Particular attention must be paid to the information in this chapter.
Explanation of symbols and notices
Safety and warning instructions are intended to avoid hazards to the life or health of operating or maintenance personnel, and to avoid material damage. It is emphasised through the use of the special terms defined here. Additionally, their location is marked by warning symbols (pictograms). The signal terms used have the following meanings:
DANGER means that death, serious injuries and/or considerable damage to property will occur if the corresponding preventive measures are not taken and maintained.
WARNING means that death, serious injuries and/or considerable damage to property can occur if the corresponding preventive measures are not taken and maintained.
CAUTION means that minor injuries and/or damage to property can occur if the corresponding preventive measures are not taken and maintained.
NOTICE indicates an important item of information about the product itself or how the product should be handled, to which special attention should be paid.
2.3
Structure of the warning notices
Section-related warning notice Section-related warning notices refer to the entire chapter, sections or several paragraphs within this operating manual. Section-related warning notices are structured as follows:
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2 Safety
Embedded warning notice
Maintenance
2.4
ARCA Regler GmbH
DANGER
Type and source of the danger
Possible consequences of disregard
► Measure to avoid the danger
► Further measures
Embedded warning notices refer to a certain area within a section. They apply to smaller information units than the section-related warning notices. Embedded warning notices are structured as follows:
DANGER!
Instructions for avoiding a dangerous situation.
Intended use
The product complies with laws, regulations and standards valid at the time of delivery.
The product does not pose a danger to people, property or environment if it is used for its intended purpose and the warning notices contained in this operating manual and attached to the product are observed. This applies to the entire lifetime, from the delivery, assembly and operation to the disassembly and disposal.
The following is deemed to be used for the intended purpose:
▪ Operate the product exclusively in accordance with this operating manual and in accordance with the specification in the order confirmation and the device pass.
▪ Use exclusively original ARCA spare parts for the maintenance of the product.
DANGER
Risk of death and serious injuries as well as damage to property and the environment!
Risk of death and serious injuries as well as damage to property and the environment due to hazardous operating media, high temperatures and pressures as well as moving parts.
► The following requirements and conditions must be complied with without fail.
► Observe warning notices.
Ensure or observe the following before performing any maintenance work:
▪ Depressurise the actuator and the attached valve.
▪ If necessary, cool the actuator down or heat it up to ambient temperature.
▪ Disconnect electrical connections, if any.
▪ The actuator springs are inserted with a high preload; it is imperative to follow the disassembly instructions according to the chapter entitled Diaphragm.
▪ Ensure that the system cannot be started up by third parties.
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ARCA Regler GmbH
Limits of use
2.5
2.6
2 Safety
▪ You are expressly directed to observe the regulations for potentially explosive equipment where necessary. Refer also to the chapter Use in potentially explosive areas (optional).
Operate the actuator only within the following limits of use.
Max. operating pressure [bar]
6
Min. operating temperature [°C]
-20 / Low temperature version -40
Max. operating temperature [°C]
+80
The actuator is designed for a maximum number of switching cycles of 1 million full strokes.
The max. permissible switching cycle frequency is 1 full stroke per second.
Inappropriate use
Inappropriate use is use of the product other than as described is the
chapter entitled [2.4] Intended use
.
In the addition, the following applies:
▪ Unauthorised modifications to the product can lead to injuries, damage to property and malfunctions. The user alone bears this risk.
Warranty and liability claims are excluded.
Use in potentially explosive areas (optional)
The product can also be used in potentially explosive areas if fitted with the optional additional "EX" equipment.
WARNING
Unsuitable product for potentially explosive areas
Risk of explosion!
► Use only products that are approved for use in Ex-zones and are marked accordingly.
► Make sure that the product is suitable for the area of use.
WARNING
Impermissible accessories and impermissible spare parts
Risk of explosion or damage to the product!
► Use exclusively original accessories and original spare parts.
► Observe all relevant installation and safety instructions described in the manuals for the product, accessories and spare parts.
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2 Safety
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ARCA Regler GmbH
WARNING
Exceeding the maximum ambient or media temperature
Risk of explosion due to high surface temperature!
The temperature class of the product is no longer valid if the maximum permissible ambient or media temperature is exceeded!
► Make sure that the maximum permissible ambient or media temperature of the product is not exceeded.
WARNING
Contaminated operating medium
Risk of explosion and damage to the product due to clogging up with fine dust or solid contents!
► Install a pre-filter or fine filter
► Clean the filter after 100,000 switching cycles or at least twice annually.
WARNING
Heat radiation
Risk of explosion due to high surface temperature as a result of heat radiation from additionally attached products!
► Make sure that the maximum permissible surface temperature is not exceeded.
► Insulate or decouple any attached products that radiate increased heat.
WARNING
Dust deposits
Risk of explosion due to raised product temperature as a result of dust deposits!
► Remove dust deposits that are thicker than 2 mm.
► Avoid electrostatic charging of the surface; remove dust deposits properly without rubbing the surface.
WARNING
Damaged surface coating
Risk of explosion due to damage to the surface coating in conjunction with corrosion and aluminium!
► Make sure that the surface coating is not damaged and that there is no corrosion.
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Series 812-DWK
ARCA Regler GmbH
Series 812-DWK
2 Safety
WARNING
Exceeding the layer thickness of the surface coating
Risk of explosion due to electrostatic charging of the electrically nonconductive surface coating!
► Make sure in case of overpainting that the surface coating does not exceed a total thickness of 0.2 mm.
WARNING
External impact effect
Risk of explosion due to generation of sparks caused by an impact!
► Avoid external impact effects on the product.
WARNING
Dismantling the product
Risk of explosion due to the ingress of an explosive atmosphere!
ü The product may only be opened after it has been proven that no explosive atmosphere exists in the area around the product
► Ensure through ventilation that there is no explosive atmosphere. If this is not possible, take the product to an area where there is no risk of explosion.
WARNING
Non-conductive materials with pipe-laying work
Risk of explosion due to potential differences when using non-conductive materials!
► When using non-conductive materials for piping or sealing, care must be taken that they are bridged with conductors.
WARNING
Non-conductive lubricants
Risk of explosion due to potential differences when using non-conductive lubricants!
► Use only electrically conductive lubricants to lubricate the components.
WARNING
Exceeding the max. surface temperature at bearing points
Risk of explosion due to raised surface temperature in case of inadequate lubrication and dust deposits at the bearing points!
► Make sure that the maximum permissible surface temperature is not exceeded.
► The lubrication and dust deposits at the bearing points must be inspected after 100000 operating cycles or at least twice annually.
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2 Safety
ATEX nameplate
ARCA Regler GmbH
3 5 2
1
2.7
2.8
4 7 6
Illustration 2: ATEX nameplate
1 Manufacturer
2 Type designation
3 ATEX marking for gas atmosphere
4 ATEX marking for dust atmosphere
5 Serial no.
6 "X" marking – the actuator can be used for an ambient temperature of -40 °C up to a surface temperature of +80 °C.
7 "X" marking – the actuator can be used for an ambient temperature of -40 °C up to a surface temperature of +80 °C.
Residual risks
There may still be residual risks even if the product is used for its intended purpose.
▪ Danger of being crushed by unsecured actuators
In case of negligent use of personal protective equipment:
▪ Danger due to noise resulting in hearing loss
▪ Thermal hazards (burning, scalding, etc.)
▪ Danger due to escape of the operating medium
Furthermore, there may be unapparent residual risks despite all precautions taken.
Residual risks can be minimised if the notes on safety and commissioning as well as the operating manual as a whole are observed.
Qualification of the personnel
The product is exclusively intended for use in plants and installations in which trained technical personnel carry out the necessary work. Technical personnel are persons who are entrusted with the installation, commissioning and operation of this product and who have the appropriate qualifications for their work activities, such as, for example:
▪ training or instruction in accordance with current technical safety standards in the maintenance and usage of appropriate safety equipment.
▪ Training in First Aid.
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Persons
Activity
Transport
Installation
Commissioning
Maintenance
Fault finding
Mechanical troubleshooting
Electrical troubleshooting
Repairs
Disposal
2.9
2 Safety
▪ In the case of systems with explosion protection: training or instruction and authorisation to carry out work on potentially explosive systems.
Repair work may be carried out only by trained and qualified technical personnel.
Work on electrical equipment may be carried out only by trained electricians or persons who have received electrotechnical instruction.
Instructed persons
X
X
X
Persons with a recognised technical education
Persons with a recognised electrotechnical education
Superiors with relevant skills
ARCA service personnel
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Operator's duty of care
To avoid accidents, malfunctions and environmental impacts, the respective person responsible for the transport, commissioning, operation, maintenance and disposal of the product must ensure the following:
▪ Observation of all warning and danger notices.
▪ Regular instruction of personnel on all applicable questions of work safety, the operating manual and in particular the safety instructions that it contains.
▪ Regulations and work instructions for safe working as well as the corresponding instructions for the conduct of the personnel in case of accidents and fire are to be kept at the ready at all times and hung up in the plant if necessary.
▪ Operate the product only if it is in perfect working order.
▪ Use only spare parts, lubricants and operating resources approved by the manufacturer.
▪ Observe the specified operating conditions and requirements at the place of installation.
▪ Provide all necessary devices and the personal protective equipment required for the respective task.
▪ Refer to the chapter entitled Maintenance for the prescribed maintenance intervals and comply with the corresponding regulations.
▪ Allow installation, commissioning and maintenance of the product to be carried out only by qualified and trained personnel in accordance with this operating manual.
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2 Safety
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ARCA Regler GmbH
▪ The operator must ensure that the product is used for its intended purpose.
▪ Before commissioning the product the operator must carry out a risk assessment and define appropriate inspection and maintenance intervals according to the operating conditions.
2.10
Personal protective equipment
Personal protective equipment must be worn during work in order to minimise health risks.
▪ During work, always wear the protective equipment necessary for the respective work
▪ Follow the notices about personal protective equipment displayed in the working area.
Always wear
Protective clothing
Tight-fitting work clothes with a low tear resistance, with narrow sleeves and without protruding parts. They primarily serve to protect against being caught up by moving machine parts.
Do not wear rings, chains or other jewellery.
Safety shoes
To protect against heavy falling parts and slipping on smooth floors.
Wear in case of particular environmental conditions
Special protective equipment is necessary in particular environmental conditions.
It is to be selected according to the environment.
Safety glasses
To protect the eyes against flying parts and splashes of liquids.
Helmet
To protect against falling and flying parts and materials.
Hearing protection
To protect against hearing damage.
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Series 812-DWK
ARCA Regler GmbH
3
3.1
3.2
3.3
3 Transport, storage and packaging
Transport, storage and packaging
Transport
WARNING
Tipping or falling load!
Danger of death and danger of damage to property due to load tipping over or falling!
► Only suitable and approved means of transport and lifting equipment may be used for transporting the product.
► Lifting equipment must generally be attached to the housing of the product, not to attachments.
► Allow only instructed persons to select and attach the lifting equipment.
► Do not stand under suspended loads.
Transport at a temperature lower than -40 °C or higher than +80 °C is not permissible.
The attachment points on actuators (lifting eyes, ring bolts, etc.) are designed solely for transporting the actuator. Under no circumstances may these attachment points be used if the actuator is coupled to a valve.
Storage
NOTICE
Improper storage!
There is a danger of the product and in particular the attached electronic accessories no longer functioning if stored improperly.
► Storage at a temperature lower than -40 °C or higher than +80 °C is not permissible.
► It must be stored in roofed-over storage places and that are weatherproof.
To protect against contamination and to protect the sealing surfaces, openings such as nozzles, flanges, etc. must be sealed using suitable means. These should be removed by technical personnel at the place of installation.
Packaging
The product is packed in a PE film inside the outer packaging (cardboard box, wooden crate, pallet, lattice box).
If the packaging, in particular the PE film, has been opened, the product must be stored immediately in a heated room.
The product must be packed in weatherproof or seaworthy packaging for transport by ship, airplane, rail or truck.
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4 Nameplate
4 Nameplate
ARCA Regler GmbH
Place of installation
Illustration 3: Nameplate
1 App. no. / Serial no.
2 Type designation / Year of manufacture
3 Valve design
4 Nominal size
5 Nominal pressure
6 Flow coefficient, characteristic curve
7 Seat diameter
8 Valve stroke
9 Material of housing / trim
10 Actuator function
11 Actuator type
12 Max. actuation pressure
13 Actuation pressure range
14 Actuator type key
The nameplate is attached to the actuator yoke or the actuator head.
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ARCA Regler GmbH
5
5 Type key
X
Z
EX
SD
Type key
812
[1]
-
1. Series
812
2. Actuator size
2
2
[2]
2
[3]
3
9
1
2
3. Yoke (Ø = mounting in mm)
0
3
[4]
_
[5]
N
[6]
DWK 0
[7] [8]
MFI piston area 284 cm²
7. Function
DWK
DWÖK without
Ø40
Ø48
Ø56
Special version
4. Stroke
3
4
5. Spring set
_
3
6
20 mm
30 mm no springs
3 springs
6 springs
A
V
6. Diaphragm head / yoke material
N Steel / Steel
Steel / Stainless steel
Stainless steel / Stainless steel
Double-acting
Double-acting with safety position
"closed"
8. Additional equipment
0
4
5
6
AP none
Low temperature version max.
-40°C (incl. 6)
Air connection G½
Screws, stainless steel (long)
External stainless steel parts, passivated (incl. 6)
Explosion-proof version
Stem 1.4462 (incl. 6)
Peripheral bolts XYLAN
Peripheral bolt ASME
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5 Type key ARCA Regler GmbH
Example of type designation 812-223 N-DWK-0
MFI pneumatic piston actuator ─ mounting diameter 48 mm ─ stroke 20 mm ─ diaphragm head / yoke material steel / steel ─ double-acting function ─ no additional equipment.
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ARCA Regler GmbH
Connections
6
6.1
6 Sectional drawings
Sectional drawings
Some versions of the actuator are illustrated below. Further versions are possible by combining the different components.
Z1, Z2, Z3 see
[9.2] Actuation signal connection
Parts list
43
46
47
69
76
77
78
79
108
118
119
32
34
38
39
28
29
30
31
23
24
25
26
14
18
21
22
6
7
4
5
2
3
Item
1
Name
Stem
Pin
* Sealing ring
Bushing
* Plain bearing
* O-ring
Filter
* Compression spring
* Hex nut
Hex screw
Washer
Hex nut
* Sealing
Screw sleeve
* O-ring
* O-ring
Sealing plug
Stroke plate
Cylinder head bolt
Washer
Lantern
* Sealing
Sealing plug
* Pipework, compl.
Thread adapter
Nameplate Ex
* O-ring
Intermediate ring
Piston
* Guide band
* Sealing ring bottom cover top cover
Washer
* recommended spare part / wearing part
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6 Sectional drawings
6.2
812-*****-DWK0
Function: Double-acting
ARCA Regler GmbH
20 / 32
Illustration 4: 812-*****-DWK0
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Series 812-DWK
ARCA Regler GmbH
6.3
812-*****-DWÖK0
Function: Double-acting with safety position "closed"
6 Sectional drawings
Illustration 5: 812-*****-DWÖK0
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7 Functional description
7
ARCA Regler GmbH
Functional description
The series 812-DWK has been developed as a double-action, pneumatic piston actuator for linear valves. The centrally located actuator stem (1) is coupled to the actuating spindle of the valve by means of a coupling.
The actuator stem (1) is precisely guided by a plain bearing (5) and the lower pressure chamber is sealed by a special sealing element with a wiper (3). Connected to the actuator stem (1) is a piston (77), which transmits the movement to the actuator stem (1). An intermediate ring
(76) with a sealing ring (79) divides the actuator housing (108, 118) into the two pressure chambers. If the pressures in the pressure chambers are different, the piston (77) moves together with the actuator stem (1) and actuates the linear valve.
118
79
108
1
76
77
5
3
Illustration 6: Sectional drawing
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Series 812-DWK
ARCA Regler GmbH
Place of installation
8
Installation
Mounting position
8 Installation
Installation
The actuator should be easily accessible from at least one side and from above.
Include a catwalk or similar in the planning in case of greater heights.
An electric crane or block and tackle should be provided if necessary.
The actuator yoke (34) has a central bore that enables rotation of the actuator in any direction. The actuator is fastened to the valve with the slotted nut of the valve. Actuator and valve are coupled to each other via a stroke indicator.
The maximum permissible actuating forces of the valve must be observed.
Please note:
CAUTION
Mounting position
► Pipeline horizontal
► Actuator housing above the valve
► Align the actuator and attached parts to the valve
Please consult us in case of a different mounting position!
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9 Commissioning
Stroke adjustment
Air quality
Air connections
9
9.1
9.2
ARCA Regler GmbH
Commissioning
Adjustment
▪ CAUTION!
Shear forces must not be transmitted to the actuator stem (1) when coupling actuator and valve.
▪ CAUTION!
Do not turn the actuator stem (1) in a radial direction.
– The pins (2) must lie in the transverse axis of the yoke (34) as shown in the sectional drawing.
▪ NOTICE!
Adjust the stroke so that the closing position of the valve is not hindered by the internal, non-adjustable stroke limiter of the actuator.
Actuating signal connection
CAUTION!
Ensure correct air quality!
Oil-free, instrument-quality air with no water or dust, solid material content max. 1 mg/m³ (standard atmospheric conditions), max. particle size
0.1 mm, oil content max. 1 mg/m³ (standard atmospheric conditions), pressurised dew point 20 K below the lowest ambient temperature.
When working on the compressed air system ensure that any contamination present such as water, oil, chips, soldering material residues, etc.
are expelled by blowing out.
The actuator has air connections (Z...) with an internal thread.
Actuator size Connection Z1 Connection Z2 Connection Z3
MFI G ⅛ G ⅛ G ⅛ *
* G ½ alternatively also possible.
Z3 Z3
Z1
Z2
Z1
Z2
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Illustration 7: Air connections
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Series 812-DWK
ARCA Regler GmbH 9 Commissioning
Z3 Z3
Z3
Z1
Z2
Z3
Z1
Z2
Standard
When using a positioner
(integrated installation)
Illustration 8: Air connections with additional equipment Z3 G ½
▪ Seal connection "Z1" on the yoke (34) with a plug.
▪ Connect the air supply pipe to the connections "Z2" on the yoke (34) and "Z3" on the top cover (118) with the aid of screw connections.
▪ Seal connection "Z2" on the yoke (34) with the plug (29).
▪ Connect the positioner in accordance with the operating manual.
9.3
Integrated installation of positioners
Installation according to IEC
534 (NAMUR)
Positioner installation
The actuation signal connection and feedback lever take place directly when fitting the positioner. Refer to the operating manual for the respective device for the mounting instructions.
The actuator yoke (34) is designed on the basis of the directive IEC 534
Part 6 (NAMUR) and enables the attachment on one side of auxiliary devices with an M8 fastening thread.
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10 Maintenance ARCA Regler GmbH
10 Maintenance
10.1
Care
▪ Clean the actuator stem (1) if necessary
– Clean the actuator stem (1) of adhering dirt using a soft cloth
NOTICE!
Never use sandpaper, since this will damage the surface of the stem and reduce the lifetime of the stem sealing.
10.2
Maintenance
The actuator requires almost no maintenance.
Nevertheless, the connections must be checked after 100,000 operating cycles or twice per year for leaks.
In addition it is necessary to check and clean the gliding surfaces.
Depending on the operating conditions of the actuator, the operator is responsible for defining appropriate inspection and maintenance intervals.
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ARCA Regler GmbH
11
11 Disassembly / assembly of the actuator
Disassembly / assembly of the actuator
WARNING
Disregarding the safety instructions
Risk of injury!
► Observe the notes in the chapter entitled
11.1
Procedure
▪ Disassembly in the given order.
– Dismounted parts are to be secured carefully against falling down
(risk of injury or damage).
▪ Clean all components.
▪ Before assembly, all components must be inspected for damage or wear and replaced where necessary.
▪ Assembly in the reverse order using the new components.
– Seals must generally be replaced.
– Insert O-rings and shaped rings with a suitable lubricant.
– Refer to the chapter entitled
for the tightening torques of bolted connections.
Recommended lubricants Bolted connections Roller bearing O-rings, shaped rings, guide bands
Molykote 55 Metaflux lubricating metal paste 70-85
Shell Retinax Grease
EP2
11.2
Guide and sealing element
▪ Remove the stroke indicator
▪ Remove any positioner if fitted
▪ Unscrew the pins (2)
▪ Unscrew and remove the complete bushing (4)
▪ Observe the following during the assembly:
– Observe the notes in the chapter
11.3
Piston
DANGER
Danger of death and serious injuries as well as damage to property due to high spring preload!
If the following instructions are disregarded, serious injuries resulting in death as well as severe damage to property cannot be ruled out.
► It is imperative to follow the instructions and the given order below
► Observe warning notices
"DWK" function ▪ Remove any positioner if fitted
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11 Disassembly / assembly of the actuator
"DWÖK" function
ARCA Regler GmbH
▪ Loosen the screws (21)
▪ Remove the top cover (118)
▪ Remove the intermediate ring (76)
▪ Replace the sealing ring (79), guide band (78) and O-rings (69)
▪ Remove the piston (77) with the stem (1)
▪ Remove any positioner if fitted
▪ Dismount 4 hex nuts (23) and bolts (21) evenly at the periphery.
▪ Mount assembly/disassembly bolts (21) in grade 8.8 and new hex nuts (23) in grade 8.8.
– NOTICE!
The assembly/disassembly bolts (21) and nuts (23) in grade 8.8 are not part of the scope of delivery!
Actuator size
MFI
Bolt size
M8 x 50
▪ Loosen the hex nuts (23) of the short bolts (21)
▪ Loosen the hex nuts (23) of the newly mounted assembly/disassembly bolts (21) evenly in order to relax the springs (14).
▪ Remove the top cover (118)
▪ Remove the compression springs (14)
▪ Remove the intermediate ring (76)
▪ Replace the sealing ring (79), guide band (78) and O-rings (69)
▪ Unscrew the pins (2)
▪ Remove the piston (77) with the stem (1)
Mounting position
11.4
Springs
▪ Disassembly according to [11.3] Piston chapter up to removal of the
compression springs (14).
▪ Replace the compression springs (14) by new compression springs.
– CAUTION!
Always replace the compression springs as a complete set! Observe the arrangement of the compression springs
(14)!
3
4
Number of springs
2
6
Mounting at position
1 + 4
1 + 3 + 5
2 + 3 + 5 + 6
1-6
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Illustration 9: Spring arrangement
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Series 812-DWK
ARCA Regler GmbH 12 Torque tables - bolted connections
Torque tables - bolted connections 12
12.1
Screws according to DIN EN ISO 4017/4014, DIN 939
Thread
M6
M8
Torque [Nm]
A4-80
7
30
8.8
8
30
12.2
Screws according to ASME B16.5
Thread
¼“-UNC
5 /
16
“-UNC
Torque [Nm/lbf ft]
A193B8
7/5
30/22
12.3
Sealing plug (39)
Actuator size Torque [Nm]
MFI 40
12.4
Bushing (4)
Actuator size Torque [Nm]
MFI 170
12.5
Hex nut (18)
Actuator size Thread
MFI M16
A193B7
8/6
30/22
Torque [Nm]
120
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13 Fault removal ARCA Regler GmbH
13 Fault removal
WARNING
Improper troubleshooting work
Risk of injury!
► For all troubleshooting work, observe the corresponding notes – in particular the safety instructions – in this operating manual or in the operating manuals for the additionally installed components.
Please contact the manufacturer if problems occur that are not described in this table.
Fault
Actuator stem doesn't move
Actuator stem seal is leaking
Actuating force too low
Possible causes
No actuation air pressure signal present
Actuation signal connection incorrectly implemented
Action
Check signal source
Check actuation signal connection and direction of action of the actuator
Actuation signal air pressure too low
Piston seal defective
Sealing element worn
Increase air pressure, observe max.
permissible air pressure
Replace the piston seal
Replace sealing element, clean stem surface
Replace stem and sealing elements Stem surface damaged
Actuation signal air pressure too low
Increase air pressure, observe max.
permissible air pressure
Leaks in the actuation signal line Check the signal line
Positioner, if any, is incorrectly adjusted
Check the positioner adjustment
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Series 812-DWK
ARCA Regler GmbH
14
14 Disposal and recycling
Disposal and recycling
DANGER
Danger of death and serious injuries as well as damage to property due to high spring tension!
If the following instructions are disregarded, serious injuries resulting in death as well as severe damage to property cannot be ruled out!
► The actuator may only be disposed of with the actuator springs removed
► Remove actuator springs before disposal
► Strictly follow the disassembly instructions
WARNING
Operating media and auxiliary materials that are hazardous to health
Danger to people and the environment!
► Wear suitable protective equipment
► If applicable, collect and dispose of rinsing medium or residual medium. Particular attention is to be paid to dead spaces (pressure compensation, bellows, etc.)
► Observe the legal regulations for the disposal of media that are hazardous to health
ARCA products are modularly constructed and can be sorted by material into the following components.
▪ Electronic components
▪ Metals
▪ Plastics
▪ Greases and oils
▪ Packaging material
The general rules are:
▪ greases and oils are usually water pollutants and must not be allowed to escape into the environment
▪ Dispose of dismantled materials properly or recycle the separate materials
▪ Observe national disposal regulations
Series 812-DWK 03.2020 / 1.0
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www.arca-valve.com
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