Validity of the manual ...................... 5 Contact details......................... 5 Other applicable documents.................... 5 Place of storage of the manual.................... 5 ARCA ONSITE ........................ 5 Safety............................ 7 General safety information ...................... 7 Explanation of symbols and notices .................. 7 Structure of the warning notices.................... 7 Intended use..........................
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Table of contents ARCA Regler GmbH 11.2 Guide and sealing element.................... 27 11.3 Piston ............................ 27 11.4 Springs .......................... 28 Torque tables - bolted connections................... 29 12.1 Screws according to DIN EN ISO 4017/4014, DIN 939 ............ 29 12.2 Screws according to ASME B16.5 .................. 29 12.3...
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 Code¹ on the product. Further entries are not required.
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1 General data 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. Entry example Illustration 1: ARCA ONSITE...
ARCA Regler GmbH 2 Safety Safety General safety information The operating manual contains detailed descriptions for the safe installa- tion, commissioning and maintenance of the product. ▪ Read this operating manual attentively in its entirety in order to famili- arise yourself with the product.
▪ Operate the product exclusively in accordance with this operating manual and in accordance with the specification in the order confirm- ation and the device pass. ▪ Use exclusively original ARCA spare parts for the maintenance of the product. DANGER...
ARCA Regler GmbH 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). Limits of use Operate the actuator only within the following limits of use.
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2 Safety 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! ►...
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ARCA Regler GmbH 2 Safety WARNING Exceeding the layer thickness of the surface coating Risk of explosion due to electrostatic charging of the electrically non- conductive surface coating! ► Make sure in case of overpainting that the surface coating does not exceed a total thickness of 0.2 mm.
2 Safety ARCA Regler GmbH ATEX nameplate 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 temperat- ure of -40 °C up to a surface temperature of +80 °C.
ARCA Regler GmbH 2 Safety ▪ In the case of systems with explosion protection: training or instruc- tion and authorisation to carry out work on potentially explosive sys- tems. Repair work may be carried out only by trained and qualified technical personnel.
2 Safety 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 in- tervals according to the operating conditions.
ARCA Regler GmbH 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.
ARCA Regler GmbH 5 Type key Type key 1. Series 2. Actuator size MFI piston area 284 cm² 3. Yoke (Ø = mounting in mm) without Ø40 Ø48 Ø56 Special version 4. Stroke 20 mm 30 mm 5. Spring set...
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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 func- tion ─ no additional equipment.
ARCA Regler GmbH 6 Sectional drawings Sectional drawings Some versions of the actuator are illustrated below. Further versions are possible by combining the different components. Connections Z1, Z2, Z3 see [9.2] Actuation signal connection Parts list Item Name Stem * Sealing ring...
7 Functional description 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.
ARCA Regler GmbH 8 Installation Installation Place of 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.
9 Commissioning ARCA Regler GmbH Commissioning Adjustment Stroke 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.
ARCA Regler GmbH 9 Commissioning Illustration 8: Air connections with additional equipment Z3 G ½ Standard ▪ 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"...
10 Maintenance ARCA Regler GmbH 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 sur- face of the stem and reduce the lifetime of the stem sealing.
ARCA Regler GmbH 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 [2] Safety 11.1 Procedure ▪ Disassembly in the given order.
11 Disassembly / assembly of the actuator 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) "DWÖK"...
13 Fault removal ARCA Regler GmbH 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.
Particular attention is to be paid to dead spaces (pressure compensation, bellows, etc.) ► Observe the legal regulations for the disposal of media that are haz- ardous to health ARCA products are modularly constructed and can be sorted by material into the following components. ▪ Electronic components ▪ Metals ▪...
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