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Operating Instructions

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1. Connection to power supply with clockwise rotating field Information about mains connection and necessary fuse protection on the connection diagram We recommend the connection by means of a leakage current protective switch Fl 300 mA For the connection to the mains supply a cable 5 meters long is connected to the unit with a pull relief on the unit side External connection of the protective conductor e There is a connection of the protective conductor for customer s potential on the rear side of the unit e The connection of the protective conductor has to be clean and free of varnish Sense of rotation of the motor Check the sense of rotation of the fresh air fan Watch the rotation indicating arrow 32 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 4 7 Connection of the compressed air A Erection and installation The connection of the compressed air supply must be done only by qualified persons e The corresponding national regulations have to be observed for the connection of compressed air e Connect the compressed air at the rear side behind the switchbox The compressed air volume has to be ensured for a time of at least 5 minutes Connection pressure gt please observe section 2 4 Tech
2. 8 1 Spare parts list of the switch box inthe connection diagram appendix Connection diagram 71 of 76 tsch Industrietechnik Connection diagram 2002 v0 wy gO epuwers L4AWA d 06 09 LAA Joulges Bultug 1e yses4 Inj suononysuj Buyelsdo 72 of 76 6tsch Industrietechnik 9 SPARE PARTS LIST Spare parts list 04 2002 vor 400 V 3 Heating Tubular heating element 18 x 0 55 kW 230 V E3 63 620 214 Sealing for heating box silicone grey 6 0 m 50 010 995 Connection rail phase copper 52 497 261 Connection rail neutral conductor copper 52 497 262 Ventilation Fresh air fan M2 63 522 078 Seal for fresh air fan suction side 52 497 251 Seal for fresh air fan blowing side 52 497 253 Damper flap with tube bend 90 52 301 116 Swing type check valve NW 100 63 702 017 Differential pressure switch exhaust air 0 2 3 0 mbar F10 50 021 476 F10 1 Hose for measuring set 2 m 53 667 303 Hose clamps for measuring set 53 659 003 Hose clamps for differential pressure switch 53 659 006 Door Door seal silicone red 3 2 m 62 959 089 Door seal viton 3 2 m gt 60 879 180 Hinge sliding bush top bottom 52 797 231 Locking bar for door locking 52 497 230 Door lock complete without closing bar 52 040 121 Closing bar top bottom 50 040 678 Guide sheet for door linkage brass 52 086 209 Door handle 63 270 029 Door switch S1 63 302 020 Temperature sensor Resistance thermo
3. T2 T3 or T4 and this is marked on the unit A change resetting of the ignition temperature class is only possible to be done by the V tsch service personnel 5 of 76 Importantnotice range Ylmelustieteehnik 1 2 Demands to the production manager A A 1 3 Instruction book A 1 4 Charging instruction A tsch The unit must be operated only by instructed personnel Based on these Operating Instructions the production manager has to prepare a corre sponding instruction book This instruction book has to consider the individual local and working conditions and the language of the operators The production manager has to guarantee that all persons working on the unit dryer are familiar with the safety information and observe them Work on electrical installations and components has to be carried out only by a skilled electrician According to the Guideline 1999 92 EC some actions have to be taken for the protection of the health and the safety of the employees The preparation of an explosion protection document is required according to article 8 Within the scope of the risk evaluation required in this article an estimation of the maxi mum charge to be loaded has to be carried out This may be done e g according to ZH 1 10 section E 1 3 4 2 Technical Ventilation For the estimation according to ZH 1 10 the parameter for the quality factor for the sur vey of the quality of the air circulation i
4. n I xe Maintenance zo0Z v0 wy go epwwBS LAANA d 06 09 L4A Joulges BuiKug 1e yses4 Inj suononysuj Buyelsdo 68 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 7 4 Cleaning Maintenance Before cleaning the unit switch off the main switch and lock it against re connection Clean the working space and equipment and the exhaust air lines Avoid explosive mixtures at the erection location Cleaning equipment of steel must not be used brushes scraper etc Steel parts also when made of spark proof material may produce sparks on the metal lic surfaces which could ignite explosive mixtures gt D Cleaning only when the unit is cold Use only usual in the trade household detergents Take care of a sufficient venting during the cleaning Do not use combustible toxic or acidiferous detergents Clean the door seal with a wet cloth Set the dryer in operation only after a sufficient venting Recommendation Y Bee Use suitable protection equipment 69 of 76 xX lt g G g 2 n I xe Maintenance zo0Z v0 wy go epwwBS LAANA d 06 09 L4A Joulges BuiKug 1e yses4 Inj suononysuj Buyelsdo 70 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm J tsch Industrietechnik 8 CONNECTION DIAGRAM
5. 7 3 8 Disassembly of the heating Maintenance Unscrew the sheet metal cover at the rear side Dismantle the intermediate channel in the heating box and disconnect the heating connections and mark them Loosen the fastening screws of the heating box Remove the heating Check the seal of the heating box and replace if necessary The assembly is done in reversed order N 7 3 9 Disassembly of the fresh air fan Separate the fresh air piping Disconnect the electric connections of the fresh air fan and mark them Loosen the fastening screws of the fresh air fan Take the fresh air fan out Check the tightness of the flange seal and replace it if necessary The assembly is done in reversed order Defective running out of true or defective fans have to be replaced O A repair of the fresh air fan has to be done only by the manufacturer to guarantee a cor rect and expert repair When disassembling the heating and the fresh air fan or replacing the door seal special attention has to be paid to the hazard of injuries by contusion or cutting Recommendation Use suitable protection equipment For further repairs Contact a service point of V tsch see appendix Notice N When disposing of a dryer the door has to be removed for safety reasons to avoid the danger of locking up oneself or somebody please observe section 4 9 Disposal page 34 67 of 76 xX lt g G g 2
6. Take over the disconnecting temperature of the previous safety temperature lim iter Disconnecting temperature gt please observe section 2 4 Technical data page 15 7 3 4 Temperature limit cut out TLC Replace the defective selectable temperature limiter The exchange and the setting of the temperature limit cut out should to be done exclu sively by our service to guarantee a correct and expert repair After replacing the temperature limit cut out it has to be tested for correct functioning Temperature limit cut out TLC gt please observe section 7 2 6 Test the temperature limit cut out TLC page 60 Setting of the disconnecting temperature Take over the disconnecting temperature of the previous selectable temperature limiter Disconnecting temperature please observe section 2 4 Technical data page 15 oo gt ME p 1 additional equipment 65 of 76 Maintenance A A O tsch Industrietechnik 7 3 5 Door seal and contact pressure of the door Replace the damaged door seal Loosen the screws of the exterior casing only slightly for replacing the door seal pull the damaged door seal from the sheet metal and attach the new door seal in the same way Fasten again the screws of the exterior casing Set the contact pressure of the door seal 7 3 6 For setting the contact pressure at the hinge side loosen the screws of the hinges only slightly align the do
7. pipe casing of mineral fibre A measuring orifice d 40mm has to be installed in the exhaust air conduction at a suitable or accessible place in a straight tube section about 1m behind the exhaust air conduct This measuring orifice is necessary for the control of the extracted air flow rate during the maintenance checking and service work At the conduction installation care has to be taken that it is not possible that deposits build up and that an easy cleaning of the exhaust air line is possible Revision orifices possibility to dismantle sections etc By the installation of the pipes for exhaust air it has to be granted that eventually existing condensate will not run back to the unit Install the exhaust air conduction if possible with approximately 2 falling gradient from the unit and drain the condensate specifically into e g a condensate trap The exhaust air of the unit must not be brought together with fuel gas It is only allowed to guide the exhaust air into chimneys if these do not have a connec tion with fire places or other workshops The exhaust air can only be guided into ventilation shafts if these have a fire resistant separation to other workshops Note We warn against a connection to an exhaust air system with extraction 30 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm tsch Industrietechnik Erection and installati
8. 1 IMPORTANT NOTICE RANGE Important notice range Read carefully and observe these operating instructions before erecting and commis N sioning the unit to avoid errors and the damages caused by them Keep the operating instructions close to the device 1 1 Use according to the regulations The electrically heated fresh air drying cabinet model VFT is exclusively suitable for e Drying and heat treatment of materials emitting vapours and gases which could form an explosive atmosphere with air Combustible materials of the explosion group II A and II B may be used here e Interior space The interior space is explosion proof corresponding to the ignition temperature classes T2 T3 and T4 and corresponds to the requirements of the device group Il category 2G e Erection location The outside of the unit corresponds to the requirements of the device group II cate gory 2G p A forbidden use which is not corresponding to its intended purpose is given at Heating and storing of materials of the explosion group II C and explosive materials Heating of closed containers which are pressurised or could build up a pressure by heating Heating and storing of foodstuffs Enabling the stay of living beings in the dryer and risking their life by that If you have doubts about special heat treatment applications please contact us Note AN The unit was set in factory to the ignition temperature class requested by the customer
9. indicated which have an explosion protection Abbreviations EN Europ ische Norm European Standard EMV Elektro Magnetische Vertr glichkeit Electromagnetic Compatibility 9 of 76 tsch Industrietechnik Important notice range 2002 v0 wy gO epuwers L4AWA d 06 09 LAA Joulges Bultug 1e yses4 Inj suononysuj Buyelsdo 10 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm J tsch Industrietechnik 2 DESCRIPTION OF THE UNIT Description of the unit 2 1 Description of the items Description of the standard unit without additional equipment Op O i 75 O o i oe 77 O BE ne i s N On _ Hirn 1 ER 7 ON _ O N Y o a eres N 77 Lg S rH CO STR Be A An 23 N 29 ee 1 Door 2 Door lock 3 Door switch 4 Switchbox 5 Temperature sensor 6 Screen rails 7 Angular support 8 Insert 1 9 Supply air fitting 10 Exhaust air fitting 11 Heater 12 Protection conductor connection 13 Check valve fresh air 14 Butterfly damper fresh air 15 Differential pressure switch exhaust air 16 Fresh air fan 17 Compressed air connection
10. is shin ing and acoustic alarm inside the switchbox sounds a Differential pressure switch Internal pressure switchbox has triggered b Lack of compressed air a Check the compressed air supply b Check the differential pressure switch Internal pressure switchbox and the measuring hoses Heating switched off fresh air fan off a Door opened b Door switch operated at closed door a Close the door b Check the door switch and the actuation Heating switched on no temperature rise a Error message at the temperature controller b Rated value on the tem perature controller is below the actual value a See operating instruc tions of the temperature controller b Check the rated value on the temperature control ler Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 53 of 76 Error diagnosis tsch Industrietechnik Error Cause Remedy Heating switched off Error message Tempera ture is shining a STL has switched off b Sensor breakage on the temperature sensor Pt100 of the safety temperature limiter STL a Operate the key switch Reset b Check the temperature sensor Heating switched off Error message Tempera ture is shining a TLC has switched off b Sensor breakage on the temperature sensor Pt100 of the tempe
11. pilot lamp Heating goes out Emergency flushing of the heating channels and of the working space with com pressed air is started pilot lamp Emergency flushing activated is shining e Underspend the resistance value at the decade resistor for the switch off tem perature of the safety temperature limiter STL see the below table e Acknowledge the error of the safety temperature limiter STL Operate the switch key reset Safety temperature limiter STL switches on pilot lamp Temperature error goes out Emergency flushing of the heating channels and of the working space with com pressed air is switched off pilot lamp Emergency flushing activated goes out Heating is connected Pilot lamp Heating is shining Resistance values for the switch off temperature of the safety temperature limiter STL Ignition temperature class T1 T2 T3 T4 Resistance value at switch off 240 C 240 C 175 C 120 C temperature 190 45 Ohm 190 45 Ohm 166 61 Ohm 146 06 Ohm Resistance value at 5 C 245 C 245 C 180 C 125 C above switch off temperature 192 26 Ohm 192 26 Ohm 168 46 Ohm 147 94 Ohm Resistance value at 5 C 235 C 235 C 170 C 115 C below switch off temperature 188 63 Ohm 188 63 Ohm 164 76 Ohm 144 17 Ohm 44 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm
12. please observe section 1 3 Instruction book page 6 The loading of the dryer is only admissible according to the Charging instruction of the customer please observe section 1 4 Charging instruction page 6 tion Never operate with lacquers made basically of epoxy resin and nitro cellulose at the same time Hazard of spontaneous ignition p The loading of the dryer must be done only when the ventilation of the unit is in opera When loading the dryer leave 25 of the flow cross section free The minimum operating temperature is about 5 K above the supply air temperature Observe the MAK values maximum workplace concentration and take care for a suffi cient air exchange in the installation room Keep the working space and equipment exhaust air line etc clean AN Remove thoroughly loading residues Explosion hazard Keep the dryer free of combustible objects and materials and also don t leave them on N the dryer The floor of the working space cannot be loaded Total load of the notched rails please observe section 2 4 Technical data page 15 35 of 76 tsch Operation Industrietechnik A N Attention When opening the door care has to be taken that there are no ignition sources in the dangerous area There are higher temperatures in the region of the door at heat bridges of the exterior AN housing and at the piping of exhaust air lines There is a risk of burning on
13. pressed air is switched off pilot lamp Emergency flushing activated goes out Heating is connected Pilot lamp Heating is shining 1 additional equipment 43 of 76 tsch Operation Industrietechnik 5 5 5 Check of the error message temperature STL The check of the error message Temperature STL has to be done in the correct O heating operation Instead of the installed temperature sensor PT 100 an external decade resistor has to be connected which can generate different resistance values e Disconnect the main switch e Disconnect the temperature sensor PT 100 and connect a calibrated a decade resistor to simulate the temperature sensor PT 100 e Connect the main switch Secure the heating operation of the unit with its safety flushing time and the self mon itoring of the STL please see section 5 5 1 Check of the fresh air fan and the heating page 40 Set the resistance value at the decade resistor for 5 C below the switch off temperature of the Safety temperature limiter STL see the below table Safety temperature limiter STL must not trigger The heating operation of the unit is continued Set the resistance value at the decade resistor for 10 C above the switch off temperature of the Safety temperature limiter STL see the below table Safety temperature limiter STL switches off pilot lamp Temperature error is shining Heating is disconnected
14. rel humidity sufficiently aerated e distance from rear side roof please observe section 4 3 Erection drawing page 27 e supply and exhaust air conducts please observe section 4 5 Connection of the supply and exhaust air conduc tions page 29 Keep the distances indicated in the erection drawing to avoid fire and local overheating of the unit or its surroundings and to guarantee a trouble free operation of it please observe section 4 3 Erection drawing page 27 24 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Standard foundation Erection and installation e non flammable in a periphery of at least 2 5 m flush and horizontal e free of vibrations please observe the loading capacity of the ground Weight of the unit plus the weight of the charge please observe section 2 4 Technical data page 15 Erecting area electrically conductive against dangerous electrostatic charging temperature resistant erecting ground 25 of 76 tsch Industrietechnik Erection and installation 2002 v0 wy gO epuwers L4AWA d 06 09 LAA Joulges Bultug 1e yses4 Inj suononysuj Buyelsdo 26 of 76 04 2002 Operating Instructions f r Fresh air Drying ca
15. safety temperature limiter STL Maintenance Instead of the installed temperature sensor PT 100 an external decade resistor has to be connected which can generate different resistance values e Disconnect the main switch e Disconnect the temperature sensor PT 100 and connect a calibrated a decade resistor to simulate the temperature sensor PT 100 e Connect the main switch Secure the heating operation of the unit with its safety flushing time and the self mon itoring of the STL please see section 5 5 5 Check of the error message temperature STL page 44 e Set the resistance value at the decade resistor for 5 C below the switch off temperature of the Safety temperature limiter STL see the below table Safety temperature limiter STL must not trigger The heating operation of the unit is continued e Set the resistance value at the decade resistor for 10 C above the switch off temperature of the Safety temperature limiter STL see the below table Safety temperature limiter STL switches off pilot lamp Temperature error is shining Heating is disconnected pilot lamp Heating goes out Emergency flushing of the heating channels and of the working space with com pressed air is started pilot lamp Emergency flushing activated is shining e Underspend the resistance value at the decade resistor for the switch off tem perature of the safety temperature limiter STL see the
16. the STL When opening the door of the dryer the heating is switched off The fresh air fan keeps running When the connected dryer is loaded with feeding material the and the doors are closed the feeding material in the working space is passed by fresh air The safety flushing time passes and the emergency flushing with compressed air is started When the safety flushing time with the exhaust running trouble free has passed the emergency flushing with compressed air is disconnected Next the heating is connected with delay Self control of the STL The running down of the safety flushing time and starting the emergency flushing with compressed air is repeated at every closing of the door The fresh air blown in from a no load area is guided over an electric heating and fed steadily to the working space A multiple air exchange per minute in the working space of the dryer is guaranteed by the fresh air fan This air exchange is important for the safety The temporary exceeding of the lower explosion limit is allowed in zone 1 The extracted air flow rate is controlled by flow switches differential pressure flow switches 13 of 76 tsch Industrietechnik Description of the unit 2002 v0 wy gO epuwers L4AWA d 06 09 LAA Joulges Bultug 1e yses4 Inj suononysuj Buyelsdo 14 of 76 6tsch Industrietechnik Description of the unit 04 2002
17. the danger of locking up oneself or somebody Carry the special waste to the corresponding appropriate disposal place The nationally and locally applicable regulations for the disposal valid at the time of the disposal have to be observed for the other materials and the special waste 34 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Operation 5 OPERATION The working regulations and safety notes mentioned below have to be observed for the N operation Visual check The dryer has to be checked visually regularly for its perfect condition We recommend to do the visual check before each start up of the unit Repeating check We recommend an inspection repeated every year by our service people Repeating inspections gt please observe section 7 2 Repeating inspections page 56 5 1 Working rules Safety notes The dryer must be used only and exclusively for applications as described in sec tion 1 1 Use according to the regulations Do not make any manipulation at the safety appliances Every unauthorised intervention may have unforeseeable consequences Explosion hazard The control and operation of the dryer is only permitted to instructed operators and only according to customer s Instruction book
18. the unit This check has to be documented in the unit log book further checks please see section 7 2 Repeating inspections page 56 e Switch the main switch on at closed compressed air supply Pilot lamp No compressed air is shining Acoustic alarm in the switchbox sounds Fresh air fan is connected pilot lamp Network on is shining Heating stays disconnected pilot lamp Heating goes out Open the shutoff valve of the compressed air supply Pilot lamp No compressed air goes out Acoustic alarm in the switchbox stops Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Safety flushing time activated pilot lamp Flushing time is running is shining Fresh air fan stays connected pilot lamp Network on is shining Heating stays disconnected pilot lamp Heating goes out After exchanging the air several times in the heating channel and the working space by the fresh air flow Safety flushing time and the injection of compressed air Emergency flushing Safety flushing time please see section 2 4 Technical data page 15 Safety flushing time finished pilot lamp Flushing time is running goes out Emergency flushing of the heating channel and the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes ou
19. to be used at maintenance and repair work The device was designed manufactured and checked before delivery according to the regulations of the EC Certificate of Conformity Declaration of Manufacturer please see section 10 Documentation page 75 ce The explosion protection measures are approved and certified corresponding to the EC prototype test The unit was set in factory to the ignition temperature class requested by the customer T2 T3 or T4 and this is marked on the unit A change resetting of the ignition temperature class is only possible to be done by the V tsch service personnel gt 7 of 76 Important notice range tsch Industrietechnik The device corresponds to the safety requirements EC machine guideline Low tension guideline Dryers and ovens safety requirements Safety of machines Safety in electric heating installations Electrical equipment of units Electromagnetic compatibility noise emission noise immunity Explosive atmospheres explosion protection Electric resources for hazardous areas Installation of electric equipment in hazardous areas Guideline for the adjustment of the legal regulations of the member countries for units and protection systems for the use according to the regulations in hazardous areas Explosion protection order ATEX 100a 98 37 EG 73 23 EWG EN 746 1 EN 12100 1 2003 EN 12100 2 2003 EN 60519 1 EN 605
20. unit 11 2 1 Description of the items 11 2 2 Structure 12 2 3 Function 13 2 4 Technical data 15 2 5 Electrical equipment of the unit 17 2 6 Mechanical equipment of the unit 18 3 Safety appliances 19 3 1 Control of the extracted air flow rate 19 3 2 Fresh air fan 19 3 3 Control of the internal pressure of the switchbox 20 3 4 Door switch 20 3 5 Temperature limitation 21 3 6 Other Safety Appliances 22 4 Erection and installation 23 4 1 Transport 23 4 2 Erection 24 4 3 Erection drawing 27 4 4 RI Flow diagram 28 4 5 Connection of the supply and exhaust air conductions 29 46 Electrical Connection 32 4 7 Connection of the compressed air 33 4 8 Disassembly 34 4 9 Disposal 34 5 Operation 35 5 1 Working rules Safety notes 35 5 2 Reaction at malfunctions 36 5 3 Switchboard 37 5 4 Rear side of switchboard 38 5 5 First commissioning 39 5 6 Operating the device 45 3 of 76 Section 10 Title Error diagnosis Maintenance Testing and maintenance Repeating inspections Repair Cleaning Connection diagram Spare parts list of the switch box Spare parts list Documentation tsch Industrietechnik Page 53 73 75 4 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik
21. 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 5 6 Operating the device Operation For the operating of the equipment see separate operating instructions section 10 Docu mentation 5 6 1 Manual flushing of the switchbox Before every connecting of the main switch we recommend to flush the switchbox sufficiently by means of the manual valve Switchbox flushing to exclude a possi bly enriched concentration of solvent in the switchbox gt PB Attention Flush the switchbox for at least 24 minutes before sart up or connecting the main switch Volume of the switchbox 121 litres 10 times air exchange in about 24 minutes Open the shutoff valve of the compressed air supply Safety flushing of the heating channel and of the working space with compressed air is started Open the manual valve of the compressed air supply Safety flushing of the switchbox is started Close the manual valve of the switchbox flushing Safety flushing of the switchbox is finished Close the shutoff valve of the compressed air supply Safety flushing of the heating channel and of the working space with compressed air is switched off 45 of 76 Operation AN O tsch Industrietechnik 5 6 2 Check of the internal pressure monitoring of the switchbox This check has to be done daily by the operators before starting up
22. 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm J tsch Industrietechnik Operating Instructions Fresh air Drying cabinet in explosion proof version VFT 60 90 Valid for oe Votsch Industrietechnik GmbH tsch Bereich W rmetechnik Industrietechnik D 35447 Reiskirchen Greizer Stra e 41 49 Phone 0049 0 6408 84 73 Telefax 0049 0 6408 84 8732 Fresh air Drying cabinet VFT 60 90 Approval no T V 02 ATEX 1826X Unit no 59 526 Production year 2004 Installation location operation locations in hazardous areas Rated temperature Permissible working temperature Temperature class Ts Rated power Input power 11 0 kw Rated current Connection diagram 83066 Voltage 400V 3N PE 50Hz Total vapour volume 0 4 m Working space 0 35 m Flow rate 2 m min air changes min about 5 CEGDI3G EExnAPIIT Read the Operating Instructions observe them and keep them close to the device 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 0 CONTENTS Section Title Page 0 Contents 3 1 Important notice range 5 1 1 Use according to the regulations 5 1 2 Demands to the production manager 6 1 3 Instruction book 6 1 4 Charging instruction 6 1 5 Guarantee 7 1 6 Special marking danger indications 9 2 Description of the
23. 1 2 female thread 18 Pressure reducer Compressed air connection 19 Solenoid valve Emergency flushing 20 Throttle valve Emergency flushing 21 Pressure reducer Internal pressure switchbox 22 Throttle valve Internal pressure switchbox 23 Differential pressure switch Internal pressure switchbox 24 Pressure gauge Internal pressure switchbox 25 Pressure reducer Internal pressure switchbox 26 Throttle valve Switchbox flushing 27 Double 4 2 way valve Switchbox flushing 1 additional equipment 11 of 76 Description ofthe unit Hnausteteehnik 2 2 Structure tsch Thermal insulation The heating and drying cabinet is a double wall construction of steel metal sheet and heat insulated with mineral fibre 110 mm External housing The external housing is made of galvanised steel sheet lacquered and has a bottom which can be under run Interior housing The interior housing is made of stainless steel material 1 4301 and is welded tight to avoid the penetration of dissolvent fumes into the thermal insulation Temperature regulation The temperature of the working space is controlled by an electronic temperature regulat ing system with semiconductor switching elements Heating The electrical heating is done by tubular heating elements of stainless steel material 1 4828 Temperature limitation The temperature of the working pace is limited by an electro
24. 19 2 EN 60204 1 EN 61000 6 4 EN 61000 6 2 EN 1127 1 EN 50021 N EN 60079 14 Guideline 94 9 EG The erection and installation of the unit in connection with an correctly executed and properly working ventilation installed by the customer is crucial for the safety against explosions 8 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 G P Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 1 6 Special marking danger indications Important notice range ATTENTION DANGER If these instructions are not observed this may lead to a hazard for the life of human beings and other living beings of the environment or to damages of the unit or the load ing material ELECTRIC POWER It is used to draw the attention to electric power Access to this area is only allowed to skilled electricians NOTE It is used to indicate a support HOT SURFACE The air of the drying space and the parts getting in contact with the air of the drying room may be very hot Wear protective clothing protective gloves INJURIES OF THE HANDS A general danger of injuries like cutting or contusion is indicated Wear protective gloves gt PAP B DANGER OF EXPLOSION An explosion may occur if the instructions are not observed EXPLOSION PROOF INSTALLATION Special installations are
25. 5 2 Check the error message exhaust air The check of the error message Exhaust air has to be done in the correct hea O ting operation when the safety time flushing is run down Check the function of the differential pressure switches one by one e Pull off the measuring hoses at the differential pressure switches F10 and F10 1 of the exhaust air monitoring rear side of the unit Pilot lamp Error differential pressure fresh air fan is shining Heating is disconnected pilot lamp Heating on goes out Safety temperature limiter STL is disconnected Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining e Push on and fasten the measuring hoses at the differential pressure switches F10 and F10 1 of the exhaust air monitoring rear side of the unit Pilot lamp Error differential pressure fresh air fan goes out Emergency flushing of the heating channel and the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes out Safety temperature limiter STL is connected Heating is connected with delay pilot lamp Error temperature is shining for about 15 sec Self monitoring of the STL Pilot lamp Heating is shining 41 of 76 Operation AN O tsch Industrietechnik 5 5 3 Check the error message internal pressure switchbo
26. 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Operation 5 5 4 Check of the error message temperature TLC 1 The check of the error message Temperature TLC has to be done in the cor O rect heating operation e Connect the main switch Secure the heating operation of the unit with its safety flushing time and the self mon itoring of the STL please see section 5 5 1 Check of the fresh air fan and the heating page 40 e Set the TLC to a temperature lower than the current temperature Operating please see section 5 6 4 Temperature limit cut out TLC page 50 Temperature limit cut out TLC switches off pilot lamp Temperature error is shining Heating is disconnected pilot lamp Heating goes out Emergency flushing of the heating channels and of the working space with com pressed air is started pilot lamp Emergency flushing activated is shining e Set the TLC again to a temperature higher than operating temperature e Acknowledge the error of the temperature limit cut out TLC Press the P key for 3 sec Temperature limit cut out TLC switches on pilot lamp Temperature error goes out Emergency flushing of the heating channels and of the working space with com
27. DOCUMENTATION Temperature controller dTRON 04 1 Temperature controller program controller Dicon 501 1 Safety temperature limiter STL TB40 Test certificate conformity statement Certificate of compliance CE Service points 1 dditional equipment Documentation Jumo Jumo Philips TUV V tsch V tsch 75 of 76 Documentation 6 gt tsch Industrietechnik Manufacturer s address V tsch Industrietechnik GmbH Umweltsimulation W rmetechnik D 35447 Reiskirchen Lindenstruth Greizer Str 41 49 Phone 06408 84 73 Telefax 06408 84 8747 Internet http www v it com eMail info wt v it com Service address Hotline Warmetechnik Votsch Industrietechnik GmbH Service Leitstelle D 35447 Reiskirchen Lindenstruth Greizer Str 41 49 Phone 06408 84 0 Telefax 06408 84 8718 eMail sevice v it com Please indicate the data on the nameplate for checkback and spare part orders The information and statements of the German Operating Instructions are binding upon translations in other languages c V tsch Industrietechnik GmbH Subject to technical changes 76 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm
28. FT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 2 3 Function Description of the unit The fresh air drying cabinet series VFT is designed and constructed according to the valid guidelines and regulations Before operating the unit a compressed air supply has to be connected and opened by the customer The compressed air pressurises the switchbox The pressure of the switchbox is monitored by a pressure switch securing the com pressed air supply Without the compressed air only the fresh air fan will be connected after switching on the unit the heating is not connected Before every connecting of the main switch we recommend to flush the switchbox suffi ciently by means of the manual valve Switchbox flushing to exclude a possibly enriched concentration of solvent in the switchbox please observe section 5 6 1 Manual flushing of the switchbox page 45 At each start up by switching on the main switch with the door of the unit closed the heating is connected only after completion of the safety flushing time and the emergency flushing with compressed air and with the exhaust running trouble free When the safety flushing time with the exhaust running trouble free is passed the emer gency flushing with compressed air is disconnected The heating is connected next with delay Self control of
29. Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 2 4 Technical data 60 90 Interior space Working space m 0 350 Interior dimensions Width mm 570 Height 900 Depth 600 Exterior dimensions Width total mm 820 Height 1650 Depth 1200 Loading carrying capacity Interior housing total kg 150 Floor surface load kg Wire mesh shelves quantity max 13 concentrated load kg 10 surface load 20 Charging trays quantity max 13 concentrated load kg 10 surface load 20 Gratings concentrated load kg 50 surface load 150 Weight net kg 325 Extracted air flow rate m h 120 Air changes min approximately 5 Compressed air supply Connection cross section ya Connection pressure bar 5 8 Working pressure 4 5 Internal pressure switchbox mbar 1 0 Safety flushing time air exchange sec 120 Total vapour volume m 0 400 1 additional equipment 15 of 76 tsch Description of the unit Industrietechnik 60 90 Sound pressure level acc to DIN 45635 Normal operation dB A lt 60 Emergency flushing with compressed air lt 80 Ignition temperature class T1 T4 Disconnecting temperature Safety temperature limiter STL C 240 Ignition temperature class T1 and T2 175 Ignition temperature class T3 120 Ignition temperature class T4 Temperature limit cut out TLC Ignition temperature class T1 and T2 230 Ignition temperature class T3 180 Ignition temperature c
30. ace with compressed air The malfunction of the temperature is indicated optically Disconnecting temperatur please observe section 2 4 Technical data page 15 Reset the safety temperature limiter The temperature error is reset by operating the key switch reset when the releasing temperature is underspent After resetting the safety temperature limiter the emergency flushing with compressed air is disconnected and the heating is connected Temperature errors which cause a triggering of the safety temperature limiter are important for the safety The device has to be checked to eliminate the reason for the temperature error for the further operation N 3 5 2 Temperature limit cut out TLC 1 Material protection thermal safety class 2 acc to EN 60519 2 The temperature limit cut out is electrically and functionally independent of the regulat ing installation If the temperature set is exceeded the temperature limit cut out disconnects perma nently the heating and initiates the emergency flushing of the heating channel and the working space with compressed air The malfunction of the temperature is indicated optically Disconnecting temperatur please observe section 2 4 Technical data page 15 Reset the selectable temperature limiter The temperature error is reset by operating the P push button when the releasing tem perature is underspent After resetting the temperature limit cut out the
31. air fan Compressed air components Silencer for damages and contact pressure treat it with a wet cloth test it for wear test them for wear lubricate slightly remove residuals condensate check for tightness and damages remove residuals condensate check for damages remove residuals condensate check for damages check for tightness and damages check for damages 61 of 76 Maintenance xX lt g G g 2 n I xe Maintenance zo0Z v0 wy go epwwBS LAANA d 06 09 L4A Joulges BuiKug 1e yses4 Inj suononysuj Buyelsdo 62 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 73 Repair Maintenance Notes Hazardous conditions must not appear by an explosive atmosphere in the sur roundings of the dryer for the repair of the unit Work on the opened switchbox during the repair have to be done only by instruc ted service personnel Part of this work is e g the measuring of currents or the setting of the safety temperature limiter STL The differential pressure switch of the internal pressure switchbox has to be set to the lowest value to enable the operation of the dryer with the opened switchbox The monitoring of the internal pressure switchbox is out of operation in this way Only approved spare parts have to be used After the repair of electrical component
32. ating is switched off pilot lamp Heating on goes out Fresh air fan continues to run Load the dryer Close the door Safety flushing time activated pilot lamp Emergency flushing activated is shin ing Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Heating stays disconnected pilot lamp Heating goes out the fresh air flow Safety flushing time and the injection of compressed air emergency flushing Safety flushing time please see section 2 4 Technical data page 15 Safety flushing time finished pilot lamp Flushing time is running goes out Emergency flushing of the heating channel and the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes out Heating is connected with delay pilot lamp Error Temperature is shining for about 15 sec Self monitoring of the STL Pilot lamp Heating is shining O After exchanging the air several times in the heating channel and the working space by 47 of 76 Operation tsch Industrietechnik After the heat treatment or for cooling down the dryer e Open the door Heating is disconnected pilot lamp Heating on goes out Fresh air fan continues to operate e Empty the dryer Close the door The running down of the safety flushing time the
33. ay shows InP alternating with the value of the current real value Input Indication of the current set value disconnecting temperature Operate the P key 3 x shortly The display shows AH alternating with the value of the current set value Alarm High Changing setting of the switch off temperature MAX Press the P key and the Increase value key at the same time for approximately 3 sec The display shows AH alternating with the value of the active set value Press the Decrease value key or Increase value key alternatively The selected value is shown on the display Storing of the cut off temperature Press the P key The value selected is stored The value of the current cut off temperature is shown on the display If the set temperature is exceeded the TWB disconnects the heating permanently at all terminals Pilot lamp MAX at TWB is shining The indication of the active set value on the display flashes as long as the discon necting temperature is exceeded After the reducing the temperature under cut off temperature Pilot lamp MAX on TWB is blinking The flashing of the indication is stopped the display shows the active set value Acknowledgement of a temperature error Press the P key for 3 sec The TWB is reset The flashing of the pilot lamp MAX at the TWB is stopped 1 additional equipment 50 of 76 04 2002 Operating Ins
34. below table Acknowledge the error of the safety temperature limiter STL Operate the switch key reset Safety temperature limiter STL switches on pilot lamp Temperature error goes out Emergency flushing of the heating channels and of the working space with com pressed air is switched off pilot lamp Emergency flushing activated goes out Heating is connected Pilot lamp Heating is shining Resistance values for the switch off temperature of the safety temperature limiter STL Ignition temperature class T1 T2 T3 T4 Resistance value at switch off 240 C 240 C 175 C 120 C temperature 190 45 Ohm 190 45 Ohm 166 61 Ohm 146 06 Ohm Resistance value at 5 C 245 C 245 C 180 C 125 C above switch off temperature 192 26 Ohm 192 26 Ohm 168 46 Ohm 147 94 Ohm Resistance value at 5 C 235 C 235 C 170 C 115 C below switch off temperature 188 63 Ohm 188 63 Ohm 164 76 Ohm 144 17 Ohm 59 of 76 Maintenance A tsch Industrietechnik 7 2 6 Test the temperature limit cut out TLC Test the serviceability at least once per month by instructed skilled personnel e Connect the main switch Secure the heating operation of the unit with its safety flushing time and the self mon itoring of the STL please see section 5 5 1 Check of the fresh air fan and the heating page 40 e Set the TLC to a temperature lower tha
35. binet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 4 3 Erection drawing Erection and installation ca 100 TE a680 gage b ry J PRA a A ax Pee SEE er ar nell gt e i u 2 7 3 a Dn N 2 u a BEER Berta eed 4 zyme ee ten AE P oO al Y y y A 623 L 878 al 820 410 2 5 210 4 1059 Supply air fitting DN 100 Exhaust air fitting DN 100 Compressed air connection 1 2 female thread 5 8 bar Mains connection 400V 3 N PE AC 50Hz 32A 5 x 6 mm Protective conductor connection 1 2 3 4 5 27 of 76 Erection and installation 4 4 RI Flow diagram N2 Druckluft O gt Frischluft O gt neutral tsch Industrietechnik t Kunde u Abluft cal Druckluft Frischluft Abluft neutral Kunde VIT Door limit switch Differential pressure switch exhaust air Pressure gauge Internal pressure switchbox Differential pressure switch Internal pressure switchbox Temperature sensor Safety temperature limiter STL Check valve fresh air Butterfly damper fresh air Pressure reducer Compressed air connection Solenoid valve Emergency flushing Throttle valve Emerge
36. chbox manually please observe section 5 6 1 Manual flushing of the switchbox page 45 e Check the motor safety devices in the switchbox unlock if necessary Note O For the correct check and the first commissioning the cover of the switchbox has to be closed to enable the overpressure in it The cover of the switchbox has to be opened and closed again every time for interven tions which are required for the operation of components during an inspection The casing has to be dismantled for the first commissioning and mounted again after that e Open the shutoff valve of the compressed air supply Emergency flushing of the heating channel and of the working space are initiated Check the following sections 5 5 1 Check of the fresh air fan and the heating 5 5 2 Check the error message exhaust air 5 5 3 Check the error message internal pressure switchbox 5 5 4 Check of the error message temperature TLC 1 5 5 5 Check of the error message temperature STL O After completion of the first commissioning e Prepare a commissioning protocol e Entry in the device log book 1 additional equipment 39 of 76 Operation A tsch Industrietechnik 5 5 1 Check of the fresh air fan and the heating e Connect the main switch at door closed and check the sense of rotation of the fresh air fan Fresh air fan is connected pilot lamp Network on is shining Safety flushing time is activa
37. cording to Ex II 2G EEx d IIC T6 and is approved according to the PTB test certificate OOATEX 1006X Opening the door When the door is opened the heating is disconnected by the door switch The fresh air fan stays in operation Closing the door When the door is closed the safety flushing time is activated by the door switch and the emergency flushing with compressed air is initiated When the safety flushing time ran down without error at the exhaust air the emergency flushing with compressed air is disconnected Subsequently the heating is connected with delay Auto control of the STL The running down of the safety flushing time and the starting of the emergency flushing with compressed air is repeated at every closing of the door 20 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm J tsch Industrietechnik 3 5 Temperature limitation Safety appliances N 3 5 1 Safety temperature limiter STL Device protection thermal safety class 2 acc to EN 60519 2 The safety temperature limiter is electrically and functionally independent of the regulat ing installation If the temperature set is exceeded the safety temperature limiter disconnects perma nently the heating and initiates the emergency flushing of the heating channel and the working sp
38. cted air flow rate is done by two differential pressure switches redundant monitoring The tests of the differential pressure switches are to be carried out only by qualified experts Test the measuring hoses and measuring sets of the exhaust air for free passage and clean them if there is condensate Test the function of the differential pressure switches for exhaust air individually Pull off the measuring hoses of the differential pressure switches when the unit is connected and check the error message of the exhaust air If the function of the differential pressure switches is OK the error indication has to react and the heating has to switch off if it was connected before The heating channel and the working space is emergency flushed with compressed air Reconnect the measuring hoses correctly Replace damaged measuring hoses and measuring sets or differential pressure switches for exhaust air 56 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 7 2 2 Test the differential pressure switch internal pressure switchbox Maintenance The tests of the differential pressure switch are to be carried out only by qualified experts Test the measuring hoses and measuring sets of the internal pressure switchbox for f
39. d off pilot lamp Heating on goes out Safety temperature limiter STL is disconnected Fresh air fan is still operating Close the door Safety flushing time is activated pilot lamp Flushing time is running is shining Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Heating disconnected pilot lamp Heating goes out After exchanging the air several times in the heating channel and the working space by the fresh air flow Safety flushing time and the injection of compressed air emergency flushing Safety flushing time gt please see section 2 4 Technical data page 15 Safety flushing time finished pilot lamp Flushing time is running goes out Emergency flushing of the heating channel and of the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes out Safety temperature limiter STL is connected Heating is connected with delay pilot lamp Error temperature is shining for about 15 sec Self monitoring of the STL Pilot lamp Heating is shining 40 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Operation 5
40. e fresh air feed line in front ofthe fresh air fan Check valve There is check valve of stainless steel in the fresh air feed line in front of the fresh air fan Compressed air connection Safety flushing of the heating and the working space with compressed air when the main switch is connected after every closing of the door and at all malfunc tions Pressurising of the switchbox with compressed air Hand valve switchbox flushing Manual safety flushing of the switchbox with compressed air before each start up Angular support For the pick up of inserts Inserts 1 Wire mesh shelves Charging trays Load of the wire mesh shelves and of the charging trays please observe section 2 4 Technical data page 15 Lead through Gas tight lead through at the exterior wall for measuring in the interior space Version with blind flange DN 25 KF 1 additional equipment 18 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 3 SAFETY APPLIANCES Safety appliances Do not make any manipulation at the safety appliances N Every unauthorised intervention may have unforeseeable consequences Explosion hazard The function of the safety appliances has to be checked regularly please observe section 7 1 Testin
41. e to be observed 4 1 Transport Shipment is done on a transport pallet e Transport the unit to the erecting place with a fork lift or suitable lift truck Dead weight gt please observe section 2 4 Technical data page 15 N e Do not use belts for lifting or erecting the unit Unit with a bottom which can be under run Lift the unit carefully at the bottom from the pallet with a fork lift or suitable lift truck Remove the pallet Erect the unit at the erecting place please observe section 4 3 Erection drawing page 27 O We recommend keep the pallet parts for service or move 23 of 76 Erection and installation 1 Mmelustieteehnik 4 2 Erection A tsch Erection place The outside of the unit corresponds to the requirements of the device group Il category 3G It is allowed to install the unit in an hazardous area zone 2 if gases and vapours are likely not to occur If they occur this will be only seldom or for a short time Important note It is not allowed to install the unit in hazardous areas zone 1 The ignition temperature class of the installation room and of the unit have to be match ing Erecting room T1 T1 T2 T1 T3 T1 T4 Unit T1 T4 T2 T3 T3 T4 T4 e Please observe the accident prevention rules e Electric equipment in the area of the dryer 2 5 m have to be suitable for the use in zone 2 temperature max 40 C dry max 70
42. emergency flushing with compressed air is disconnected and the heating is connected 1 additional equipment 21 of 76 Safety appliances Industrietechnik tsch 3 6 Other Safety Appliances A A 3 6 1 Main switch Main switch lockable by a padlock 3 6 2 Protective motor switch Overload and short circuit protection of the fresh air fan the heating and the control volt age by protective motor switches When a protective motor switch is triggered the heating is disconnected and the safety emergency flushing of the heating channel and the working space with compressed air is initiated The error is indicated optically 3 6 3 Leakage current circuit breaker Monitoring of not permissible leakage current of the heating at the housing by a leakage current circuit breaker FI 30 mA If the leakage current circuit breaker is triggered the heating is disconnected and the emergency flushing air of the heating channel and the working space with compressed is initiated The error is indicated optically 3 6 4 Ex transducer The Ex transducer is explosion proof according to x gt EEx ia II C and is approved according to the Test certificate BAS NR Ex 94 C 2516 Galvanic separation of the temperature sensor for the temperature controller and the safety temperature limiter STL 3 6 5 Ex separator amplifier The Ex separator amplifier is explosion proof according to Ex EEx ia II C and is approved according
43. eself at the inside of the door when it is opened and at the equipment inside loading material Recommendation Use suitable protection equipment For dryers with lead through at the side N Attention Operate the device only with closed gas tight feedthrough The insertion of parts like measuring sensors through the lead through into the internal space of the dryer is only allowed when considering the demand of the category 2 according to EN 1127 1 5 1 1 Loading instruction for charging trays If the dryer is equipped with charging trays the angular supports have to be changed in order that the fresh air flows meandering through the working space gt The angular supports without bolts have to be used at the first loading level counting from the top and at every further level with an odd number 1 3 5 so that the charg ing trays can be pushed against the rear wall of the unit These charging trays have to be pushed against the rear wall of the unit The angular supports at the second loading level counting from the top and at every fur ther level with an even number 2 4 6 have to be equipped with a bolt at the rear end so that the charging trays cannot be pushed against the rear wall of the unit These charging trays have to be pushed against these bolts 5 2 Reaction at malfunctions If a malfunction is signalised optical or acoustic signal N Keep the door of the dryer closed t
44. g and maintenance page 55 3 1 Control of the extracted air flow rate N Differential pressure switch Control of the extracted air flow rate necessary for a safe operation by two differential pressure switches redundant control The differential pressure switches are connected with the corresponding switching amplifier by explosion protected circuits intrinsically safe When the minimum extracted air flow rate is underspent the differential pressure switches disconnect the heating and initialise an emergency flushing of the heating channel and the working space with compressed air The malfunction of the extracted air is signalised optically The reconnection of the heating is done only at the correct extracted air flow rate After the return of the correct extracted air flow rate a safety flushing time runs down When the safety flushing time ran down without error the emergency flushing with com pressed air is disconnected Subsequently the heating is connected with delay Auto control of the STL 3 2 Fresh air fan The fresh air fan is explosion proof according to Ex EEx e Il T4 and is approved Ex according to the PTB certificate Ex 83 3638 The fresh air fan provides a constant fresh air flow rate This fresh air flow rate is streaming through the heating the working space and is subse quently extracted through the exhaust gland 19 of 76 Safety appliances Industrietechnik 3 3 Control of the internal
45. heating when the door is opened Starting of an emergency flushing with subsequent connection of the heating after closing the door 2 5 6 Heating Electric heating by means of stainless steel heating elements 2 5 7 Fresh air fan The fresh air fan is an EEx version 2 5 8 Extracted air monitoring Differential pressure switches monitor the extracted air flow rate 2 5 9 Monitoring of the internal pressure of the switchbox Differential pressure switches monitors the pressure in the switchbox 2 5 10Ex separator amplifier Galvanic separation of the differential pressure switches 2 5 11 Ex transducer Galvanic separation of the temperature sensors 2 5 12Solenoid valve Safety flushing of the heating and of the working space with compressed air when the main switch after every closing of the door and at all malfunctions is con nected 1 additional equipment 2 documentation of the equipment in section 10 Documentation 17 of 76 Description ofthe unit Hnawsneteehnik tsch 2 6 Mechanical equipment of the unit 2 6 1 2 6 2 2 6 3 2 6 4 2 6 5 2 6 6 2 6 7 2 6 8 2 6 9 Pick up of material Notched rails Mounted at the side for the pick up of angular supports Total load of the notched rails please observe section 2 4 Technical data page 15 Floor of the working space Not to be loaded Door seal silicone viton 1 Throttle valve There is an adjustable throttle valve in th
46. isplay Press the Digit key A decimal point of the rated value blinks in the upper display Press the Increase value key The value of the decimal point is increased in the upper display Continue pressing the Digit key and the Increase value key until the rated value wanted is shown e Press the ENTER key The blinking of the decimal point in the upper display is stopped The rated value is stored Press the PGM key 3 x The real value is shown in the upper display The rated value is shown in the lower display For the further operating of the temperature controller please see section 10 Docu O mentation page 75 49 of 76 Operation A tsch Industrietechnik 5 6 4 Temperature limit cut out TLC e Set the temperature limit cut out at 10 C above operating temperature Setting depending on the purpose of the protection 1 Protection of the material at rated temperature and protection of the unit at the same time Setting to final value Disconnecting temperature gt please observe section 2 4 Technical data page 15 2 Material protection at operating temperature Setting above the operating temperature wanted Indication of the current alarm value Operate the P key 1 x shortly The display shows AL alternating with the value of the current alarm value Alarm Low Indication of the current real value Operate the P key 2 x shortly The displ
47. lass T4 130 Temperature Safety Class acc to EN 60519 2 Safety temperature Limiter STL 2 Temperature limit cut out TLC 1 2 Installation and working space classification Installation place 2 5 m in the door area cluster 2 category 3G Interior space cluster 2 category 2G Limitation of rated value Temperature controller Ignition temperature class T1 and T2 C 200 Ignition temperature class T3 150 Ignition temperature class T4 100 Rated temperature Ignition temperature class T1 and T2 C 200 Ignition temperature class T3 150 Ignition temperature class T4 100 Electrical data for differing data please see nameplate Rated voltage frequency V Hz 400 3 N PE AC 50 Ignition temperature class T1 T2 T3 and T4 Rated current A 16 7 Rated power kW 10 0 Input power kW 11 0 04 2002 1 additional equipment 16 of 76 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 2 5 Electrical equipment of the unit Description of the unit 2 5 1 Temperature controller Jumo dTRON 04 1 2 5 2 Temperature controller Program controller 2 Jumo Dicon 501 2 5 3 Safety temperature limiter STL 7 Philips TB 40 2 5 4 Temperature limit cut out TLC Jumo iTRON 2 5 5 Door switch Disconnecting of the
48. meter 2 x Pt 100 B1 50 018 088 Resistance thermometer TLC 2 x Pt 100 B3 50 018 088 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 1 additional equipment wearing part for 2 year service Subject to changes 73 of 76 Spare parts list Compressed air Pressure reducer compressed air connection Solenoid valve emergency flushing Y4 Throttle valve emergency flushing Silencer Pressure reducer switchbox flushing Throttle valve switchbox flushing Double 4 2 way valve switchbox flushing Pressure reducer internal pressure switchbox Throttle valve internal pressure switchbox Differential pressure switch internal pressure switchbox F3 Pressure gauge internal pressure switchbox Inserts Angular supports Wire mesh shelf Charging trays 1 1 Charging trays 1 2 1 Lead through DN 25 KF 7 1 additional equipment wearing part for 2 year service Otsch Industrietechnik 63 692 008 63 696 065 62 630 043 61 323 308 63 692 006 63 692 009 62 633 009 63 692 006 63 692 009 50 021 476 63 720 051 52 250 210 52 497 260 52 497 270 52 497 271 62 660 006 Subject to changes 74 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm J tsch Industrietechnik 10
49. n the current temperature Operating gt please see section 5 6 4 Temperature limit cut out TLC page 50 Temperature limit cut out TLC switches off pilot lamp Temperature error is shining Heating is disconnected pilot lamp Heating goes out Emergency flushing of the heating channels and of the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Set the TLC again to a temperature higher than operating temperature e Acknowledge the error of the temperature limit cut out TLC Press the P key for 3 sec Temperature limit cut out TLC switches on pilot lamp Temperature error goes out Emergency flushing of the heating channels and of the working space with com pressed air is switched off pilot lamp Emergency flushing activated goes out Heating is connected Pilot lamp Heating is shining Faulty selectable temperature limiters have to be replaced 1 additional equipment 60 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 7 2 7 Other repeating tests Door seal Door switch Closing bars and door hinges Working space Supply air lines exhaust air lines Measuring set of the exhaust air Fresh
50. nce has sufficient knowl O edge in the section of the fresh air drying cabinets and is familiar with the corresponding workers protective regulations and the regulations and standards Before the maintenance and repair work e Geta written authorisation to start work from the operator of the installation e Hazardous conditions must not appear by an explosive atmosphere in the surround ings of the unit e Switch off the main switch and secure it against reconnection After finishing the maintenance and repair work The correct status of the unit has to be checked and secured briefer starting it up again Please indicate the data of the nameplate if you contact us for questions or spare parts orders Service address please see section 10 Documentation page 75 7 1 Testing and maintenance The dryer and its safety appliances have to be tested by an expert regularly and at N appropriate intervals but at least once a year We recommend an inspection repeated every year by our service people Repeating inspections gt please observe section 7 2 Repeating inspections page 56 The tests have to be documented We recommend to record the tests proof in a test book or in an EDP documentation The test may be shown by a badge 55 of 76 Maintenance 7 2 Repeating inspections A tsch Industrietechnik 7 2 1 Test the differential pressure switches exhaust air The monitoring of the extra
51. ncy flushing Pressure reducer Internal pressure switchbox Throttle valve Internal pressure switchbox Pressure reducer Switchbox flushing Throttle valve Switchbox flushing Double 4 2 way valve Switchbox flushing Silencer Compressed air Fresh air Exhaust air Neutral Customer VIT 28 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 4 5 Connection of the supply and exhaust air conductions Erection and installation The connection of the supply and exhaust air conductions has to be done only by qualified persons The total length of the directly connected supply and exhaust air conductions NW N 100 should not exceed 5 m with max 3 tube bends 90 R gt D An additional extension of the conductions reduces the extracted air flow rate e Supply and exhaust air conductions have to be installed separated from each other e Check the extracted air flow rate after finishing the installation and adjust it if neces sary with the mechanical throttle valve in the fresh air conduct Extracted air flow rate please observe section 2 4 Technical data page 15 If the extracted air flow rate cannot be adjusted O contact a service point of V tsch see appendix 4 5 1 Supply air system The
52. nic Safety Temperature Lim iter STL The STL is installed inside of the switchbox Fresh air fan The fresh air fan is on the roof of the unit behind the switchbox Vertical air guiding The air inlet is at the roof of the working space and the exhaust at the bottom of it Safety against explosions The safe operation of the unit is guaranteed by the technical ventilation Control of the extracted air The extracted air flow rate is controlled by two flow indicators differential pressure flow indicators Switchbox The Switchbox is constructed according to the safety principle of a simplified pressure encapsulation and is provided continuously with compressed air during the operation of the unit Pick up of material There are notched rails mounted at the side of the working space for the pick up of angular supports Wire mesh shelves and charging trays may be placed on the angular supports The floor of the working space cannot be loaded Total load of the notched rails the wire mesh shelves and of the charging trays please observe section 2 4 Technical data page 15 Note If charging trays are placed on the angular supports the angular supports have to be changed The loading instruction for the charging trays has to be observed please observe section 5 1 1 Loading instruction for charging trays page 36 12 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet V
53. nical data page 15 The use of a Pressure reducer with maintenance unit for filtered and oil free conden sate free compressed air is a must Note If nitrogen N or inert gas is connected instead of compressed air the risk exists that the installation room of the unit is enriched with the gas when flushing at ope ned door as e g when the main switch is switched off Danger of suffocation 33 of 76 Erection and installation sioner 4 8 Disassembly A A 4 9 Disposal A O tsch Disassembly of the dryer for a change of location Separation of the electrical connection has to be done only by skilled electricians Transport of the dryer please observe section 4 1 Transport page 23 The door has to be removed for safety reasons to avoid the danger of locking up oneself or somebody Disassembly of the unit for disposal Separation of the electrical connection has to be done only by skilled electricians Transport of the dryer please observe section 4 1 Transport page 23 Special waste There are some electrical and electronic components in the unit which have to be dis posed of as special waste if necessary If desired we take care of a disposal without endangering the environment Disposal by the user If the user disposes of the unit the following has to be carried out The door lock has to be destroyed or one door has to be removed for safety rea sons to avoid
54. o enable a flushing with compressed air Do not continue to charge the unit After cooling down empty the unit Empty the dryer Eliminate the error immediately 1 additional equipment 36 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Operation 5 3 Switchboard Pilot lamp Pilot lamp Pilot lamp Pilot lamp H4 H5 H11 H3 emergency no error supply temperature flushing compressed exhaust air error activated air Main switch Temperature limit cut out Qo TLC 7 N3 eoi peo OIDO e OO am amp L258 88 O amp Temperature controller N1 Pilot lamp Pilot lamp Pilot lamp Key switch H1 H14 H30 S2 network flushing time heating reset is running 1 additional equipment 37 of 76 Operation 5 4 Rear side of switchboard OANDOARWDNDM tsch Industrietechnik Temperature sensor Check valve fresh air Butterfly damper fresh air Differential pressure switch exhaust air Fresh air fan Compressed air connection 1 2 female
55. on 4 5 3 Exhaust air systems without extraction The unit has to be connected directly to an exhaust air line at systems without extraction A N It is only possible to connect always one unit to one exhaust air line The total resistance to flow with a NB 100 and a total length of 5 m with 3 tube bends 90 deducting a possibly existing supply air line and fresh air filter should not be exceeded at this O Example for an exhaust air system without extraction An 04 2002 a Operating place in hazardous area Dryer Fresh air conduct Exhaust air conduct Thermal insulation akhwWN Operating place in non hazardous area Tube bend Roof bonnet deflector bonnet Branch 10 Shutoff valve for condensate 11 Condensate tank COON OD Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 31 of 76 Erection and installation sive Otsch 4 6 Electrical Connection A gt gt The electrical connection must be done only by skilled electricians e The corresponding national regulations have to be observed for the electrical con nection e The network conditions have to be in accordance with the data on the nameplate e Variations of the mains voltage max 10 Observe the VDE and technical connection regulations of the local electricity supply company
56. on on the temperature controller goes out The pilot lamp Automatic operation on the temperature controller is shining O For the further operating gt please see section 10 Documentation page 75 1 additional equipment 51 of 76 tsch Industrietechnik Operation 2002 v0 wy gO epuwers L4AWA d 06 09 LAA Joulges Bultug 1e yses4 Inj suononysuj Buyelsdo 52 of 76 J tsch Industrietechnik 6 Error diagnosis ERROR DIAGNOSIS A Failures are to be corrected only by expert skilled personnel 04 2002 Error Cause Remedy No indication on the control ler display no indication of the pilot lamp No mains or control voltage Check the voltage mains and control fuses Error message at the con troller See operating instructions of the controller See operating instructions of the controller Fresh air fan switched off Motor protection switch has triggered Press on key Check the motor protection switch Error message Differential pressure fresh air fan is shining Differential pressure switch Exhaust air has triggered a Check the differential pressure switch Exhaust air the measuring hoses the measuring unit and the Supply and Exhaust air lines b Check the setting range of the Differential pressure switches c Check the extracted air flow rate Error message Internal pressure switchbox
57. or and fasten the screws again For setting the contact pressure at the closure side remove the circlip at the stop bolt pull the stop bolt out and set both eyebolts by turning them Push the stop bolt in again and fix it with the circlip Door lock and closing bars Replace defective door lock and closing bars 7 3 7 Dismantle the door and collocate it horizontally Cut out the silicone gap carefully Remove the interior sheet metal of the door Remove the residual silicone Remove carefully the thermal insulation Replace defective parts The assembly is done in reversed order Fill the gap between interior sheet and exterior sheet of the door with silicone suitable silicone on request Door switch and actuator bar Replace defective door switch and actuator bar Mark the position of the setting ring of the switch actuation Remove the door switch Remove the setting ring of the switch actuation Remove the feedthrough plate in the rear and or in front Take out the actuator bar with the compression spring Replace the defective parts The assembly is done in reversed order The door switch has to be actuated by the setting ring when the door is closed 66 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik
58. ox Check the contact pressure of the switchbox cover seal Check the compressed air supply If the internal pressure switchbox cannot be set O consult a service point of V tsch see annex 57 of 76 Maintenance tsch Industrietechnik 7 2 4 Test the extracted air flow rate The test ofthe extracted air flow rate is to be carried out only by qualified persons Attach a pipe length about 1 m to the exhaust air conduct of the unit stabilisa tion stretch At units with a fixed piping installation a measuring hole diam 40 mm has to be installed at a suitable place on the exhaust air line on a straight pipe segment about 1 m behind the exhaust air conduct please observe section 4 5 2 Exhaust air system page 30 Measure the minimum extracted air flow rate of the cold dryer with the fresh air fan running If there is a variation the extracted air flow rate can be set at a mechanical damper flap in the fresh air line Extracted air flow rate please observe section 2 4 Technical data page 15 If the minimum extracted air flow rate cannot be adjusted please contact a V tsch Service point see appendix 58 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 7 2 5 Test the
59. please observe section 7 2 1 Test the dif ferential pressure switches exhaust air page 56 7 3 2 Differential pressure switch of the internal pressure switchbox Replace damaged measuring hoses and measuring sets or differential pressure switches for the internal pressure switchbox Set the differential pressure switch exhaust air to 0 8 mbar After replacing the differential pressure switch for the internal pressure switchbox it has to be sealed with lacquer and tested for correct functioning Differential pressure switch internal pressure switchbox please observe section 7 2 2 Test the differential pressure switch internal pressure switchbox page 57 64 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Maintenance 7 3 3 Safety temperature limiter STL Replace the defective safety temperature limiter The exchange and the setting of the safety temperature limiter should to be done exclu sively by our service to guarantee a correct and expert repair After replacing the safety temperature limiter it has to be tested for correct functioning Safety temperature limiter STL gt please observe section 7 2 5 Test the safety tem perature limiter STL page 59 Setting of the disconnecting temperature
60. pressure of the switchbox A 3 4 Door switch amp A tsch Differential pressure switch Control of the of the internal pressure of the switchbox necessary for a safe operation by a differential pressure switch The Switchbox is constructed according to the safety principle of a simplified pressure encapsulation and is pressurised continuously with compressed air during the operation of the unit When the interior pressure of the switchbox is underspent e g when the compressed air supply is interrupted the differential pressure switch disconnects the complete con trol The fresh air fan continues running fresh air flushing in order to maintain the safety principle of the unit The heating the temperature control and the other controls are disconnected The solenoid valve of the safety flushing with compressed air is open The error of the interior pressure of the switchbox is signalled optically and acoustically The reconnection of the unit is done only at the correct interior pressure of the switch box After the return ofthe compressed air a safety flushing time runs down and the safety flushing of the heating channel and of the working spaces with compressed air is started When the safety flushing time ran down without error the emergency flushing with com pressed air is disconnected Subsequently the heating is connected with delay Auto control of the STL The door switch has an explosion protection ac
61. rature limit cut out TLC a Press the P key for 3 sec b Check the temperature sensor Errors occurring are to be eliminated immediately by authorised skilled persons If operating modes or error modes are not indicated by the white or red pilot lamp respectively check additionally the glow lamp When the technical ventilation fails by malfunction of the fresh air fan or failure of the exhaust air monitoring an emergency flushing of the heating and of the working space with compressed air is started Safety component if the error cannot be eliminated please consult a service point of Votsch Reset only when the unit is cooled down by about 10 C If the errors are repeating please consult a service point of V tsch 1 additional equipment 54 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 7 MAINTENANCE Maintenance The safety and serviceability of the unit is only guaranteed if the necessary checks and N repair works are carried out either by authorised skilled personnel or by our service peo ple We recommend to conclude a maintenance contract with our service department The cleaning work may be done by an expert user Expert is a person who by his technical education and experie
62. rear side of the unit Pilot lamp No compressed air goes out Emergency flushing activated pilot lamp Flushing time is running is shining Heating stays disconnected pilot lamp Heating goes out Note If the check of the error message Internal pressure switchbox was done by clo sing the compressed air supply e Open the shutoff valve of the compressed air supply Pilot lamp No compressed air goes out Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Pilot lamp Flushing time is running is shining Heating stays disconnected pilot lamp Heating goes out After exchanging the air several times in the heating channel and the working space by the fresh air flow Safety flushing time and the injection of compressed air Emergency flushing Safety flushing time gt please see section 2 4 Technical data page 15 Safety flushing time finished pilot lamp Flushing time is running goes out Emergency flushing of the heating channel and the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes out Safety temperature limiter STL is connected Heating is connected with delay pilot lamp Error temperature is shining for about 15 sec Self monitoring of the STL Pilot lamp Heating is shining 42 of
63. ree passage and clean them if they are polluted Test the function of the differential pressure switches for the internal pressure switchbox Pull off the measuring hoses of the differential pressure switches when the unit is connected and check the error message of the internal pressure switchbox If the function of the differential pressure switch of the internal pressure switchbox is OK the optical error indication has to react the acoustic alarm has to sound and the heating has to switch off when it was connected before Reconnect the measuring hose correctly Replace damaged measuring hoses and measuring sets or differential pressure switches for the internal pressure switchbox N 7 2 3 Test the internal pressure switchbox The tests of the internal pressure switchbox is to be carried out only by qualified experts See the internal pressure of the switchbox at operating unit at the pressure indica tion rear side of the switchbox Internal pressure switchbox please observe section 2 4 Technical data page 15 Close the shutoff valve of the compressed air supply If the function of the differential pressure switch of the internal pressure switchbox is OK the optical error indication has to react the acoustic alarm has to sound and the heating has to switch off if it was connected before Open the shutoff valve of the compressed air supply again If there is a variation from the internal pressure switchb
64. s a safety test has to be carried out gt gt The following has to be verified at this Visual check of the workmanlike execution Insulation resistance gt 1 MOhm Protective conductor resistance lt 0 1 Ohm Equivalent leakage current lt 15 mA The differential pressure switch of the internal pressure switchbox has to be set again Differential pressure switch internal pressure switchbox gt please observe section 7 2 2 Test the differential pressure switch internal pressure switchbox page 57 N The switchbox cover has to be closed after finishing the repair The contact pressure of the switchbox cover seal and the internal pressure switchbox have to be checked Internal pressure switchbox please observe section 7 2 3 Test the internal pressure switchbox page 57 The switchbox cover has to be closed for a correct check of the complete function of the O unit after the repair to enable the overpressure in the switchbox 63 of 76 Maintenance Y FP UBS p tsch Industrietechnik 7 3 1 Differential pressure switch and measuring sets of the exhaust air Replace damaged measuring hoses and measuring sets or differential pressure switches for the exhaust air Set the differential pressure switch exhaust air to 1 2 mbar After replacing the differential pressure switch it has to be sealed with lacquer and tested for correct functioning Differential pressure switches exhaust air
65. s to be taken as f 1 and for the safety factor as kadm 0 7 The production manager has to establish a charging instruction for each dryer about the maximum admissible charge depending on the charging material Note The production manager has to provide the instruction book and the charging instruction for the operators and has to make sure that it is observed e g by regular training and instruction of the personnel 6 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 1 5 Guarantee Important notice range N The unit must not be changed in the version as it was supplied by us A guarantee will only be granted if you act according to the directions of these Operating N Instructions The processes of development production and shipping are according to the regulations of DIN ISO 9001 The safety and serviceability of the equipment is only guaranteed if the necessary main tenance and repair works are carried out by either our service engineers or by author ised skilled personnel We recommend to conclude a maintenance contract with our service department Maintenance and cleaning may be carried out by customer s specialised people please see section 7 Maintenance page 55 Only original spare parts are
66. starting of the emergency flushing with compressed air and the delayed connection of the heating is repeated at every closing of the door Shut down e Switch off the main switch Emergency flushing of the heating channel and of the working space with com pressed air is started Unit is switched off Close the shutoff valve of the compressed air supply 48 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 5 6 3 Temperature controller short instruction Operation Jumo dTRON 04 1 1 Actual indication i O 7 segment display red 2 Rated value indication 7 segment display green 4 Trt lowe 3 PGM key a LL Advance of the levels l o loxs Selection of the decimal point when entering m 5 Increase value key Increasing of the decimal point value 6 ENTER key A Confirming of the input 7 Indication of the connecting position Indication of the connected output 8 Ramp function Indication of the ramp function Setting changing of rated value Normal display The real value is in the upper display The rated value is in the lower display Press the PGM key The rated value is shown in the upper display The indication SP 1 is shown in the lower d
67. supply air has to be taken from a neutral area which is free of dissolvent vapours non hazardous area The unit has to be connected to the customer s supply air system gt gt The following has to be considered for the supply air conduct The connection has to be tight NB 100 The connection at the unit s side must not be loaded mechanically The lowest operating temperature of the unit depends on the temperature of the sup ply air fed Lowest operating temperature supply air temperature 5 K 29 of 76 Erection and installation nist A tsch 4 5 2 Exhaust air system Due to the dissolvent vapours and the thermal load the exhaust air has to be gui ded into the open air or a neutral area non hazardous area we recommend the connection to customer s exhaust air system The unit has to be connected to a customer s exhaust air system For the discharge of the exhaust air the following has to be considered e No possible ignition sources in the in the exhaust air conduction e Observation of the respective national valid regulations for emission values The pipes of the exhaust air system have to be of incombustible material e g metal They have to be installed in a way that no fire hazard could emerge from the develop ing temperature e Surface temperatures Tsurface operating temperature lt nominal temperature e A sufficient thermal insulation has to be provided e g
68. t Heating is connected with delay pilot lamp Error Temperature is shining for about 15 sec Self monitoring of the STL Pilot lamp Heating is shining e Set the temperature controller Operating please see section 5 6 3 Temperature controller short instruction page 49 Temperature indication an the temperature controller Temperature controller Jumo dTRON 04 1 Set the temperature limit cut out TLC at 10 C above operating temperature For operation gt please see section 5 6 4 Temperature limit cut out TLC page 50 Set the temperature controller program controller 1 Operating please see section 5 6 5 Temperature controller program controller short instruction page 51 Temperature indication an the temperature controller Temperature controller Dicon 501 1 additional equipment 46 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik The dryer must be loaded only when the ventilation fresh air fan is operating and the A compressed air supply was opened and if they continue to operate until the drying is fin Operation ished e Charging the dryer is done before or after heating up depending on the working process e Open the door He
69. ted pilot lamp Flushing time is running is shining Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Heating disconnected Pilot lamp Heating goes out e Check the power consumption of the fresh air fan at the motor connecting termi nals Check the extracted air flow rate at the extracted air gland Extracted air flow rate please see section 2 4 Technical data page 15 After exchanging the air several times in the heating channel and the working space by the fresh air flow Safety flushing time and the injection of compressed air Emergency flushing Safety flushing time gt please see section 2 4 Technical data page 15 Safety flushing time finished pilot lamp Flushing time is running goes out Emergency flushing of the heating channel and of the working space with com pressed air is disconnected pilot lamp Emergency flushing activated goes out Safety temperature limiter STL is connected Heating is connected with delay pilot lamp Error temperature is shining for about 15 sec self monitoring of the STL Pilot lamp Heating is shining e Set the rated temperature value at the temperature controller higher than room temperature Check the power consumption of the heating at the heating terminals in the heating box e Open the door Heating is switche
70. thread Pressure reducer Compressed air connection Solenoid valve Emergency flushing Throttle valve Emergency flushing Pressur reducer Internal pressure switchbox Throttle valve Internal pressure switchbox Differential pressure switch Internal pressure switchbox Pressure gauge Internal pressure switchbox Pressure reducer Internal pressure switchbox Throttle valve Switchbox flushing Double 4 2 way valve Switchbox flushing 38 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik Operation 5 5 First commissioning The following checks have to be carried out before the first commissioning by an expert General check e The ignition temperature class of the unit has to be suitable for the erection location e Correct connection of the mains supply e Correct connection of the supply air and exhaust air lines e Correct connection of the compressed air supply Before every connecting of the main switch we recommend to flush the switchbox sufficiently by means of the manual valve Switchbox flushing to exclude a possibly enriched concentration of solvent in the switchbox Open the manual valve of the switchbox flushing and control the safety flushing of the swit
71. to the PTB Test certificate Ex 94 C 2086 Galvanic separation of the differential pressure switch for the extracted air monitoring 3 6 6 Solenoid valve Emergency flushing The solenoid valve Emergency flushing is explosion proof according to Ex EEx m II T4 and is approved according to the Test certificate INERIS 96 D 5058 X Safety flushing of the heating and of the working space with compressed air at a break down of the control of the technical ventilation or its monitoring The solenoid valve Emergency flushing is opened when the current is switched off 3 6 7 Manual valve Switchbox flushing The manual valve of the switchbox flushing is a manual safety device Before every connecting of the main switch we recommend to flush the switchbox suffi ciently by means of the manual valve Switchbox flushing to exclude a possibly enriched concentration of solvent in the switchbox please observe section 5 6 1 Manual flushing of the switchbox page 45 22 of 76 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 4 ERECTION AND INSTALLATION Erection and installation AN Qualified personnel is required for the transport erection and installation of the unit The corresponding accident prevention rules hav
72. tructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 04 2002 Operating Instructions f r Fresh air Drying cabinet VFT 60 90 P FM VFT Stammdatei_GB fm 6tsch Industrietechnik 5 6 5 Temperature controller program controller short instruction Operation Jumo Dicon 501 1 Upper display actual value 2 Lower display rated value 3 Programmable display D program status D Indication of the connected outputs Indication of automatic manual operation Programming key Taste Exit hand key Automatic operation key Decrease key 10 Increase key 11 Enter key ODNoOOA Setting changing of rated value Normal display The real value is in the upper display The rated value is in the lower display Press the increase decrease value key PGM HAND is shown in the Matrix display The pilot lamp Manual operation on the temperature controller is shining Press the increase decrease value key The value of the decimal point is changed in the Matrix display Continue pressing the Increase value key and the Decrease value key until the rated value wanted is shown e Press the ENTER key or wait for 3 sec The rated value is stored Switch off the rated value manual operation Press the EXIT HAND key PGM HAND goes out in the Matrix display GRUNDSTELLUNG Basic posi tion is shown The pilot lamp Manual operati
73. x The check of the error message Internal pressure switchbox has to be done in the correct heating operation when the safety time flushing is run down e Pull off the measuring hose at the differential pressure switch F3 of the Internal pressure switchbox monitoring at the rear side of the unit Pilot lamp No compressed air is shining Heating is switched off pilot lamp Heating goes out Safety temperature limiter STL is disconnected Emergency flushing of the heating channel and the working space with com pressed air is started pilot lamp Emergency flushing activated is shining Acoustic alarm in the switchbox sounds Fresh air fan stays connected pilot lamp Network on is shining Note The check of the error message Internal pressure switchbox can be done also by closing the compressed air supply Close the shutoff valve of the compressed air supply Pilot lamp No compressed air is shining Heating is disconnected pilot lamp Heating on goes out Safety temperature limiter STL is disconnected Emergency flushing of the heating channel and the working space cannot be started due to the missing compressed air Acoustic alarm in the switchbox sounds Fresh air fan stays connected pilot lamp Network on is shining e Push on and fasten again the measuring hoses at the differential pressure switch F3 of the Internal pressure switchbox monitoring at the

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