Adsorption dryer PDAD. (en) Operating instructions g [ ]

Transcription

1 Adsorption dryer PDAD (en) Operating instructions g [ ]

2 Original instructions Installation and commissioning are to be carried out only by qualified personnel in accordance with the operating instructions. 2 Festo PDAD 1701g

3 Table of contents 1. Introduction Safety Component designation Overview Electronic controller Multiple distributor aj Desiccant cartridge with integrated dust filter Reservoir Function Installation Mounting the micro filter on the dryer Pneumatic connection Assembling the mounting accessories on the dryer Changing the connections for the inlet and outlet Installation conditions Power supply Voltage connection Power supply socket connection Alarm connection Commissioning Maintenance and care LED displays Decommissioning for maintenance purposes Maintenance and service Removing/installing the front or rear cover Replacing or cleaning the air nozzle Cleaning the silencer Resetting the controller Troubleshooting General fault finding Electrical troubleshooting Accessories Technical data Festo PDAD 1701g English 3

4 1. Introduction For all available product documentation The product described in these operating instructions may only be installed, operated and maintained if these operating instructions have been completely read and understood by the employees handling the product. These operating instructions and in particular the safety instructions are to be kept with the product or as a print-out or copy. The operating instructions must be strictly adhered to. Please keep the following information available if you need to contact Festo with regard to the product or the operating instructions. Part number and type designation Date commissioned The part number and type designation can be found on the rating plate on the top righthand side of the device. Please note this information in the operating instructions as a reminder and for future use. The dryer is delivered in protective packaging. Use due diligence when transporting, loading and unloading the device. On delivery, the dryer is configured with an air nozzle for an operating pressure of 7 to 9 bar. You must ensure that the correct air nozzle is attached for the anticipated operating pressure. For more information see the table with technical data in chapter 11. Scope of delivery Micro filter MS6-LFM Adapter kit Power supply socket Adsorption dryer PDAD Tubing Operating instructions PDAD 4 Festo PDAD 1701g English

5 2. Safety Festo expressly excludes any liability or responsibility for damages and/or injuries which result from violation of these operating instructions. The device may only be used for its intended purpose. The cold regenerative adsorption dryer is only to be used according to its intended purpose for drying pressurised air under the conditions described in chapter 11 of these operating instructions. Any other use of the device is considered not for its intended purpose. Festo is not liable for damages which result from misuse. The following symbols indicate a possible hazard. Where such hazards arise, the appropriate measures must be taken in order to reduce the risk for the user or operator of the product. Caution: Source of danger Attention: Danger due to electrical voltage Attention: Danger due to high pressures Note on Pressure Equipment Directive Classification of the dryers in pressure equipment categories Type PDAD-09 PDAD-13 PDAD-22 PDAD-51 PDAD-73 PDAD-100 Category I I I I II II Notes on commissioning and maintenance Vibrations can cause fatigue in the material and can decrease the endurance limit of the adsorption dryers and mounting components. Protect adsorption dryers and mounting components against mechanical vibrations. Commissioning and the intervals for periodic inspections are subject to the applicable national regulations. When carrying out maintenance work, inspect components visually for damage. Replace the device if necessary. Festo PDAD 1701g English 5

6 The following safety regulations need to be strictly adhered to: These operating instructions or a print-out or copy thereof are to be left at the place where the product is installed. Repair work on the device is only to be carried out by personnel authorised by Festo. Operating, repair and maintenance personnel must be aware of the following information: Accident prevention regulations Safety information (general and device specific) Device safety equipment Measures to be taken in an emergency It is the installer's responsibility to ensure that the cables to and from the dryer are suitable for the task, correspond to the applicable laws and have been subjected to a visual check and tests before commissioning. All cables must be fitted in an appropriate manner. The device must be decommissioned before carrying out any maintenance or repair work. Operators and other personnel are exposed to a risk if work is carried out on a running device. Decommissioning the device means disconnecting it from the power supply and compressed air supply, and ensuring the pressure is completely reduced. Only trained specialists who are aware of the electrical requirements of the device as described in these operating instructions as well as the safety regulations and conditions are permitted to carry out work on the electrical components and the power supply of the device. Use suitable, correctly sized tools that are in good condition to carry out any work on the device. Only use accessories and spare parts from the manufacturer. There is no guarantee that non-original spare parts are designed and manufactured to correspond to the safety and operating requirements of the device. Festo takes no liability for device faults which result from the use of unapproved spare parts. Use suitable and safe work platforms or other secure work access options to carry out installation work above head height. Do not make any design changes to the product. Changes and modifications may only be carried out by Festo. All faults or defects which could impair safety must be eliminated before using the device. Used objects and materials must be correctly disposed of in line with the local laws and conditions. This applies in particular to the desiccant cartridges. 6 Festo PDAD 1701g English

7 3. Component designation 3.1 Overview The figure below shows the main components of the dryer PDAD-09/13/22/51/73. ad ae aj aa ab ah af On the back of the dryer 2 ac ag Upper valve block 2 Electronic controller 3 Lower valve block 4 Floor plate 5 Front cover 6 Mounting screw front cover 7 Reservoir 8 Mounting screw reservoir 9 Desiccant cartridge with integrated dust filter aj aa ab ac ad ae af ag ah Multiple distributor Cover plate Cover plate mounting screw Rear cover Power supply socket Reservoir seal screw Seal Silencer Air nozzle Festo PDAD 1701g English 7

8 The figure below shows the main components of the dryer PDAD-100. ad ae ai aa bj af ab ah aj ac On the inside of the dryer 2 ag Upper valve block 2 Electronic controller 3 Lower valve block 4 Floor plate 5 Front cover 6 Mounting screw front cover 7 Reservoir 8 Mounting screw reservoir 9 Desiccant cartridge with integrated dust filter aj Multiple distributor aa Cover plate ab ac ad ae af ag ah ai bj Cover plate mounting screw Rear cover with cable throughfeed for mains connection Power supply socket Reservoir seal screw Seal Silencer Air nozzle Multiple distributor connection screws Seal for connecting multiple distributor 8 Festo PDAD 1701g English

9 3.2 Electronic controller 2 The valve blocks (on top and below) are actuated by solenoid valves in the controller which determine the pressure and direction of the air flow in the desiccant cartridge. 3.3 Multiple distributor aj The standard design of the dryer is configured in such a way that the inlet openings are on the left and the outlet openings on the right when looking at the front of the device. By using the opening nozzles several different opening requirements become available. See also section 5.4. Outlet Inlet See the direction of the arrows for inlet side of the dryer Installation in corners 3.4 Desiccant cartridge with integrated dust filter 9 The desiccant cartridges contain a drying agent which has been developed for drying compressed air. The drying agent is contained in a transparent tube with end pieces which allow the air to flow through at both ends. In the upper part of each cartridge is a 1 micron filter to separate residual dust from the drying agent. The cartridge length varies with the rated output of the dryer. 3.5 Reservoir 7 The desiccant cartridge is located in an extruded aluminium reservoir and has pressurised end caps. The operating pressure and the flow through the individual cartridges is controlled by the valve blocks positioned between the two reservoirs. The regenerative air flow (purge air flow) is controlled by an external air nozzle with a small opening (front, central) on the upper valve block, accessible by removing the cover. Festo PDAD 1701g English 9

10 4. Function During dry operation an even, uninterrupted supply of compressed air should be provided according to the specification. This function is achieved with two compressed air reservoirs which operate in alternating cycles. If air is being dried in one reservoir, the drying agent in the second reservoir can regenerate. In the adsorption dryer the main air flow is fed through the desiccant cartridge(s) of a reservoir. This removes the moisture so the required pressure dew point can be achieved. A small amount of the dry air (purge air) is fed to the other reservoir. The purge air flows through the desiccant cartridge(s), escapes into the atmosphere through a drain valve and thus regenerates the drying agent. The regeneration cycle lasts 120 seconds. The corresponding drain valve is then closed. This means the regenerated reservoir can be brought up to system pressure with the purge air and can switch to the operating cycle. After a further 50 seconds the other reservoir starts a new regenerative operating cycle. 10 Festo PDAD 1701g English

11 5. Installation 5.1 Mounting the micro filter on the dryer In order to protect the drying agent from contaminated pressurised air the micro filter MS6-LFM supplied must be mounted on the inlet of the dryer. On delivery, the three inlet options are on the left-hand side of the dryer (see arrow). If an inlet on the right-hand side is required the multiple distributor in the cover of the dryer must be turned (see chapter 5.4). 1. Select an inlet opening. Remove any sealing plugs and attach them to the unused inlet. 2. Insert a lightly greased O-ring 2 in the slot of inlet Fit the module connecting plate 3 with hollow bolt 4 with spanner size 10 (for PDAD-...y) or max. 14 Nm (for PDAD-...½). The maximum tightening torque is 15 Nm (for PDAD-...y) or max 18 Nm (for PDAD-...½). The module connecting plate 3 can be adjusted 90 for horizontal installation of the dryer Festo PDAD 1701g English 11

12 4. Insert flat seal 5 in the slot of the module connecting plate 3 and O-ring 6 in the slot of micro filter MS 6-LFM. 5. Position micro filter MS6-LFM on the dryer. Observe the direction of flow from 1 to 2. The number 7 on the product housing serves as a guide. 6. Place module connector 8 between the micro filter MS6-LFM and the dryer and then fit it using two screws. The prominent edge of the module connector should be pointing upwards. The tightening torque of the screws is 1.2 Nm ±10%. 7. Connect the supplied 4 mm tubing 9 (outside diameter) to the condensate drain of the micro filter. Connect the other end of the tubing with the screw QSL-F on the back of the dryer (upper connection 'condensate inlet'). 8. Connect the tubing with 4 mm diameter (outside diameter) to screw QSL-F on the back of the dryer (lower connection 'condensate outlet'). Connect the other end of the tubing with suitable condensate collecting bowls Festo PDAD 1701g English

13 Note The micro filter MS6-LFM must be placed vertically (±5 ) regardless of the installation location of the dryer. Check that there is sufficient space below the filter bowl (min. 100 mm). When installing horizontally, support with suitable material. 5.2 Pneumatic connection 1. Turn the connection screw or piping into the threaded connection of the micro filter MS6-LFM. Note the screw-in depth of the threaded connection: Max. screw-in depth [mm] Type ISO 228 MS6(N)-LFM 12.0 (NPT) Turn the connection screw or pipeline into the outlet of the dryer. Adapter assembly (only for PDAD-...-N...): Turn the NPT adapter supplied 1 with sealing ring into the outlet of the dryer. The maximum tightening torque is 15 Nm (for PDAD-...N3/8) or max 18 Nm (for PDAD-...½). 1 Festo PDAD 1701g English 13

14 Note It is recommended that you install a by-pass line around the dryer and the prefilter. C D O B 5.3 Assembling the mounting accessories on the dryer Wall mounting ABMW-PDAD Foot mounting ABMF-PDAD The maximum tightening torque is 10 Nm. Note: It is not possible to mount the micro filter MS6-LFM on the inlet on the back of the dryer. The maximum tightening torque is 10 Nm. Note The mounting accessories are not in the scope of the delivery of the adsorption dryer PDAD. These parts must be ordered separately. 14 Festo PDAD 1701g English

15 5.4 Changing the connections for the inlet and outlet Outlet Inlet 1. Delivery state: three inlet options on the left-hand side of the dryer (viewed from the front). 2. Loosen both mounting screws (PZ 2) from the cover and remove the cover. 3. Dryer after removing the cover 4. Release the four mounting screws of the multiple distributor (SW 5) and remove the multiple distributor. 5. Dryer after removing the multiple distributor. 6. Turn the multiple distributor 180 and reinstall it with the help of the four mounting screws (max. tightening torque 20 Nm). Make sure both O-rings are properly seated. Inlet Outlet 7. Reinstall the cover using both mounting screws (max. tightening torque 1 Nm). 8. Location of the connections for the inlet and outlet after carrying out the steps described. Festo PDAD 1701g English 15

16 5.5 Installation conditions Correct Incorrect Correct Incorrect The dryer is designed for safe operation under the following conditions: Use indoors Height of up to 2,000 m Maximum relative air humidity 80% for temperatures up to 31 C declining in a linear fashion to 50% at 40 C 16 Festo PDAD 1701g English

17 6. Power supply 6.1 Voltage connection 1. The dryer can be operated with alternating current (AC) or direct current (DC). Make sure that only one power source is connected to the correct socket. The cover supplied must then be attached to the unoccupied power supply, see chapter 6.2. A power source connected to the wrong power supply can destroy the electronics! 2. The power supply is provided using the power connection socket supplied. 3. The dryer is isolated for protection and therefore does not require earthing. 4. A suitable external fuse must be used. 5. The cable used must correspond to the local installation conditions as well as the power consumption. 2 ( ) Earthed conductor Seal 1 (+) Phase Voltage 12 V DC 24 V DC 100 V AC 115 V AC 230 V AC 240 V AC Current intensity 0.8 A 0.4 A 0.16 A 0.14 A 0.07 A A Festo PDAD 1701g English 17

18 6.2 Power supply socket connection Note The connections for the network socket on the PDAD-100 are on the bottom behind the cover. These can be removed after unfastening the mounting screw (SW 5), see chapter 8.4. Voltage: 100 to 240 V AC Cover Voltage: 12 to 24 V AC Cover 18 Festo PDAD 1701g English

19 6.3 Alarm connection The electronic controller has an alarm relay with DIN connection. A visual or acoustic remote alarm system can be connected outside the dryer with this DIN connection. In the event of a fault or when servicing is required the alarm relay switches. At the same time, red LEDs on the display panel show the fault which has occurred, see chapter 8.1. When the fault is eliminated, the alarm relay resets, but only after the current switching cycle has finished or the control device has been reset after a cartridge change. In order to set up the remote alarm system a suitable cable must be fed through a rubber grommet in the rear wall for electronic control. 1. Connect the switching pin of an alarm installation with the external power supply to pins 1 and 2 of the DIN plug. 2. Remove the cover from the DIN connection marked 'Alarm' as described in number 1 while the power supply to the dryer is interrupted and connect the wired DIN connection. Make sure that the seal and screw are inserted correctly. Alarm relay current intensity Plug for DIN connection Max. 3 A, 28 V DC Socket MSSD-E (Festo part no ) Hirschmann GDS 207 External power supply Festo PDAD 1701g English 19

20 7. Commissioning On delivery, the adsorption dryer is configured with an air nozzle for an operating pressure of 7 to 9 bar. The air nozzle must be changed for other operating pressures. The set with the remaining air nozzles is not part of the scope of delivery and must be ordered separately, see Accessories (chapter 10, see also Each air nozzle is engraved with a number for identification purposes. 1. Determine the suitable air nozzle for the anticipated operating pressure using the table with technical data in chapter If necessary, replace the air nozzle in the dryer. To do this, follow the steps in chapter 8.4 and chapter Close valves A, B, C and D. 2. Switch on the compressor. 3. Slowly open valve A. Compressed air flows through the desiccant cartridge and escapes into the atmosphere via the silencer. 4. Check the dryer for leaks. O C D B 20 Festo PDAD 1701g English

21 POWER x Y Z POWER Z X Y 5. Switch on the power supply. All four LEDs on the display panel simultaneously flash green four times and then red four times to confirm the power supply. The device is then ready for operation. Observe the display panel during an entire operating cycle. The following cycle is preset in the factory and starts automatically. (i) (ii) (iii) (iv) (v) (vi) The power supply LED POWER and the reservoir LED X light up green. After 120 seconds the reservoir LED X goes out and the condensate drain LED Z lights up green. The condensate drain valve opens for approx. 2 seconds. After a further 50 seconds the condensate drain LED Z goes out and the reservoir LED Y lights up green. After a further 120 seconds the reservoir LED Y goes out. After a further 50 seconds the reservoir LED X lights up green. The cycle described above repeats itself (i v). 6. Reset the control device using the reset disc from the service package (not during initial commissioning see chapter 8.7 Resetting the controller ) 7. Leave the dryer to run for at least 6 hours in order to ensure that the correct pressure dew point is reached. 8. Slowly open valve B. Festo PDAD 1701g English 21

22 8. Maintenance and care 8.1 LED displays Status LED colours and signals Description Action Operating voltage off Cycle regeneration left reservoir End of regeneration left reservoir and condensate drain Cycle regeneration right reservoir Right reservoir end of regeneration Report (upcoming Order service package maintenance) after every with new desiccant 11,500 hours of operation cartridge. OK Warning 22 Festo PDAD 1701g English

23 Status LED colours and signals Description Action Maintenance interval after every 12,000 hours of operation Replace desiccant cartridge, see assembly instructions service package PDAD. Fault in right solenoid valve Take device out of operation and contact a Festo service technician. Fault in left solenoid valve Take device out of operation and contact a Festo service technician. Fault in condensate drain valve Take device out of operation and contact a Festo service technician. Fault in control device Take device out of operation and contact a Festo service technician. Fault in power supply Check power supply. Service required Festo PDAD 1701g English 23

24 8.2 Decommissioning for maintenance purposes 1. If a bypass line has been installed, open valve C and D. Make sure that the air flowing through the bypass is not dried out. C D 2. Close valve B. 3. Close valve A. 4. Leave the dryer to run for O B 15 minutes to ensure the pressure is completely reduced. 5. Disconnect the device from all power supplies. The desiccant cartridges can fail. Ensure that there is no compressed air in the adsorption dryer during longer interruptions to the power supply. 8.3 Maintenance and service Before any maintenance work, the dryer must be decommissioned, seechapter 8.2. The following maintenance tasks must be carried out by the user of the dryer: After every 12,000 operating hours: change the desiccant cartridges (see chapter 8.4) with the parts from the service package. The service package is to be ordered separately and contains the desiccant cartridges, O-rings, a reset disc and instructions. As required: clean the air nozzle (see chapter 8.5) or the silencer (see chapter 8.6). 24 Festo PDAD 1701g English

25 8.4 Removing/installing the front or rear cover 1. Dryer with mounted cover plate. 2. Remove the mounting screw (SW5). 3. Pull the cover outwards and remove it by pushing it downwards. 4. Dryers without covers. 5. Insert the cover, placing the insertion springs on the cover into the groove of the dryer. Then push the cover upwards and press it inwards. 6. Re-attach the mounting screw (max tightening torque 1 Nm). Festo PDAD 1701g English 25

26 8.5 Replacing or cleaning the air nozzle 1. Remove the front and rear dryer covers (only for PDAD-100, see chapter 8.4. The air nozzle is in the upper valve block. 2. Remove the air nozzle mounting screw (PZ 2). 3. Pull the air nozzle out of the opening of the upper valve block. 4. Only when cleaning: clean the air nozzle with warm, soapy water. Then dry it thoroughly. Do not use any sharp aids or tools. 5. Push the replacement or cleaned air nozzle into the valve block. Ensure that the O-rings are in good condition and in the correct places. 6. Insert the mounting screw of the air nozzle back into the upper valve block and tighten it. 26 Festo PDAD 1701g English

27 8.6 Cleaning the silencer 1. Remove front and rear (only for PDAD-100) cover of the dryer; see chapter Disconnect silencer from valve block. 3. Remove silencer from dryer. 4. Clean threads on silencer. 5. Silencer can be thoroughly cleaned in warm soapy water. Do not use sharp instruments or tools. 6. Ensure silencer is thoroughly clean and dry then replace by following the above procedure in reverse. Festo PDAD 1701g English 27

28 8.7 Resetting the controller 1. If the dryer is put into operation again after a cartridge has been replaced, the controller must be reset using the reset disc in the service package. 2. The disc must be held for five seconds on the blue part of the display. 3. During these five seconds the power supply LED POWER (network supply) flashes green. After a successful reset, the reservoir LED Y flashes red once as confirmation. 1 Reservoir LED Y 2. Power LED Festo PDAD 1701g English

29 9. Troubleshooting 9.1 General fault finding Before searching for a specific fault, the following general questions must be clarified: Has the device been externally damaged or are parts of the device missing? Is the device supplied with power? Was commissioning carried out as described in these operating instructions? Are all the external valves for drying set correctly? Do the current operating conditions correspond to the operating conditions when the product was selected and ordered? The possible causes and actions for possible faults with the dryer are listed in the table below: Problem Possible cause Actions Bad dew point Water at dryer inlet Air flow is too high Inlet pressure is too low Check prefiltering and condensate drain Compare actual air flow with the highest indicated air flow Compare to the value indicated Inlet temperature too high Compare to the value indicated Functional fault Silencer blocked or damaged Leakage Jammed shuttle valve or faulty electric components Clean or replace silencer Tighten connection points or replace seals See section about electrical troubleshooting Festo PDAD 1701g English 29

30 9.2 Electrical troubleshooting (see also LED displays in chapter 8.1) Problem Possible cause Display Priority Actions No dry operation Faulty dry operation No power supply None Check supply Short-circuit or cable interruption, left solenoid valve Reservoir LED X flashing red P1 Take device out of operation and contact a Festo service technician. Short-circuit or cable interruption, right solenoid valve Reservoir LED Y flashing red P1 Take device out of operation and contact a Festo service technician. Controller fault Power supply LED POWER flashing red P2 Take device out of operation and contact a Festo service technician. Faulty power supply Power supply LED POWER continuously lights up red P1 Check supply Drain not switched on Solenoid drain valve open or short circuit Condensate drain LED Z flashing red P1 Take device out of operation and contact a Festo service technician. Controller fault Power supply LED POWER flashing red P2 Take device out of operation and contact a Festo service technician. 30 Festo PDAD 1701g English

31 10. Accessories Accessories Service package with desiccant cartridges, O-rings, reset disc and manual Air nozzle set with 3 air nozzles (PDAD-100: 6 air nozzles) For PDAD-09 PDAD-09-SP ADNA-PDAD-09 For PDAD-13 PDAD-13-SP ADNA-PDAD-13 For PDAD-22 PDAD-22-SP ADNA-PDAD-22 For PDAD-51 PDAD-51-SP ADNA-PDAD-51 For PDAD-73 PDAD-73-SP ADNA-PDAD-73 For PDAD-100 PDAD-100-SP ADNA-PDAD-100 Festo PDAD 1701g English 31

32 11. Technical data Type PDAD-09 PDAD-13 PDAD-22 PDAD-51 PDAD-73 PDAD-100 Operating [bar] 4 16 pressure Operating medium Compressed air to ISO :2010 [6:4:4], Pressure dew [ C] 40 point [ C] 70 (with reduced flow rate) Air quality class at the Compressed air to ISO :2010 [2:1:2] at pressure dew outlet port point 70 Compressed air to ISO :2010 [2:2:2] at pressure dew point 40 Mounting Vertical position Horizontal Ambient [ C] temperature Temperature of medium [ C] Operating voltage range Power consumption CE marking, Declaration of conformity Degree of protection Drying agent Desiccant lifetime [V DC] [V AC] (50 60 Hz) For DC: approx. 9.6 W (24 V/0.4 A type) For AC: approx. 16 VA (230 V/0.07 A type) According to EMV guidelines According to low voltage guidelines According to pressurised device guidelines IP65 (as per EN 60529) Zeolite, Na 2 O. Al 2 O SiO 2. n H 2 O 12,000 operating hours Product weight [kg] Width 1) [mm] Depth 1) [mm] Height 1) [mm] Internal volume [l] ) Without prefilter 32 Festo PDAD 1701g English

33 Nominal flow rate for 40 C pressure dew point (inlet temperature 25 C saturated) Inlet [l/min] Purge air [l/min] Outlet [l/min] PDAD-09 PDAD-13 PDAD-22 PDAD-51 PDAD-73 PDAD-100 Operating pressure p [bar] , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,406.6 Festo PDAD 1701g English 33

34 Nominal flow rate for 70 C pressure dew point (inlet temperature 25 C saturated) Inlet [l/min] Purge air [l/min] Outlet [l/min] PDAD-09 PDAD-13 PDAD-22 PDAD-51 PDAD-73 PDAD-100 Operating pressure p [bar] , , , , , , , , , , , , , , , , , , , , , , , , Festo PDAD 1701g English

35 Allocating the air nozzles for various operating pressures For correct and effective operation, there must be a certain amount of purge air, dependent on the operating pressure. By selecting the correct air nozzle, the amount of purge air is adjusted for the operating pressure. An incorrectly selected air nozzle can lead to premature failure of the dryer. The following table shows the allocation of the air nozzles for the various operating pressures. The grey area marks the permitted operating pressure range for the air nozzles included in the scope of delivery. If the operating pressure is outside the marked area, an air nozzle from the air nozzle set is required, see chapter 10 Operating pressure p [bar] Number of the air nozzle PDAD-09 PDAD-13 PDAD-22 PDAD-51 PDAD-73 PDAD (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) (2x) Festo PDAD 1701g English 35

36 Copyright: Festo AG & Co. KG, PO box D Esslingen, Germany Phone: Fax: The reproduction, distribution and utilisation of this document as well as the communication of its contents to others without express authorisation is prohibited. Offenders will be held liable for the payment of damages.. All rights reserved in the event that a patent, utility model or design patent is registered. service_international@festo.com Internet: Original: Version: de 1701g