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Summary of Contents for Meech 915EX
- Page 1 Operating Manual Model 915EX Shockless AC Bar...
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Page 3: Table Of Contents
Contents Introduction Certification Inspection Special Conditions for Safe Use Operation Installation 6 Technical and Construction 9 Maintenance Fault Finding Repairs and Warranty CE Approval 15 Health and Safety 15 Products shown in this document may be covered by one or more patents, patents applied for and/or registered designs and/or trade marks. For further information please refer to our Head Office or visit www.meech.com. © Meech Static Eliminators Ltd., 27.10.17... -
Page 5: Introduction
Introduction The Meech Model 915EX has been designed for use on the most arduous static elimination problems. The special resistive coupling of its emitter pins renders them shockless, whilst giving powerful static neutralisation performance. This enables the bar to eliminate very high static charges on high speed webs and at longer ranges than has previously been possible. Certification EC type examination certificate No: 915Ex BASEEFA 04ATEX0347X operating manual Meec II 2 GD EEx m 1180 Gas group IIB, temp Class T6 (T85 T amb -20 to +35 C. IP65 tel:+44 1 Model: 915Ex Baseefa: 04ATEX0347X e-mail:sales@... -
Page 6: Inspection
Inspection The Model 915EX Bar was carefully packed at the factory. Nevertheless, we recommend careful examination of the carton and contents for any damage. If damage is evident, keep the packing material and immediately notify the carrier of a possible damage claim. Shipping claims must be made by the consignee to the delivering carrier. Special Conditions for Safe Use 1. The Model 915EX must be used in conjunction with a Meech Type 904 power supply or 904CM system. 2. The power supply shall be protected by a fuse capable of withstanding a prospective short circuit current of 4000A 3. The user must determine, in consultation with Meech, the suitability of the apparatus for use with any solvents present at the application. 4. When used in dusty environments, the equipment may not be used in association with dusts having an electrical resistance equal to or less than 10 3 Ohm 5. When used in dust environments, the equipment may be used only with dusts requiring an ignition energy of greater than 0.2m.J. 6. The user must determine, in consultation with the manufacturer, the suitability of the apparatus for use with particular solvents. -
Page 7: Operation
Operation The typical Meech Model 915EX installation consists of one or more bars connected to a Meech Model 904 Power Unit. The Power Unit converts the electrical supply into a high voltage, low amperage output. This output energy is transferred to the 915EX bar by the HT cable. The resistively coupled electrodes are energised by the AC voltage from the Power Unit. The electrodes emit this energy (corona discharge) in the form of a field of ionised air. This ionised air supplies ions of both polarities. Electrostatically charged products which pass through this corona are immediately neutralised and become static free. Under test conditions, the Meech Model 915EX has been found to give charge decay times that are up to eight times faster than standard AC shockless eliminator bars. -
Page 8: Installation
Installation The 915EX Bar can be placed between 25mm and 150 mm from the surface to be neutralised. It is important to ensure that the surface to be neutralised has free air on both sides and that earthed metal objects are, where possible, at least 20 mm away from the bar. These precautions will maximise the unit’s ionisation capability. Good results can be achieved at distances up to 150mm but as the distance from the object increases, the speed of charge neutralisation will decrease. A typical installation distance is 50mm from the target surface. This gives excellent performance at high web or product speeds, whilst avoiding possible damage from web breaks or product mis-feeds. Very fast webs may require the bar to be as close as 25mm to the web. Correct positioning of the bar(s) is vital to efficient operation. The following diagrams show the correct installation procedures: 1. The optimal distance from material to be neutralised. - Page 9 Mounting of the bar is by 20mm M4 studs mounted in a track at the rear of the bar. These can be slid to any point along the bar’s length to meet the machine’s available fixing points. The chassis of the bar is electrically connected to ground on the power unit via the flexible armoured conduit. However, it is good practice to provide a secondary grounding through the fixing points where practical. The HT cable and armoured conduit require connection to a Meech model 904 power unit. Please consult the 904 instruction manual for further instruction. NB: Meech model 904 power unit is not ATEX rated and hence must be mounted outside the hazardous zone. For this reason a standard 5m HT cable is provided but this can be extended upon request. 1. Free space is required on opposite sides of the target material, not a roller or solid object.
- Page 10 2. Avoid proximity to earthed parts of machinery as this will distort the corona and reduce its efficiency. 3. If bars are needed on both sides of the material, they should be staggered. 4. The bars must be earthed for correct operation. If in any doubt run an earth wire from the bar to the earth stud on the Power Unit.
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Page 11: Technical And Construction
Technical and Construction Operating voltage 7.0 kV Operations Temperature : -20°C to 35°C Length : Available in lengths from 80 mm to 4000 mm Overall length is 60mm greater than the effective length. Cable 5 metres shielded in flexible conduit; longer lengths can ordered. Weight : Approx 1,100gms per 1000mm length Cross section : 18mm x 42mm (inc. of end caps) Construction : Anodised aluminium and fire retardant PVC extrusion. Emitter Points Titanium Mounting : M4x20mm studs. These are located in a channel to provide universal mounting points. Operating range 30 - 150mm... -
Page 12: Maintenance
Maintenance Ionisers require periodic cleaning. During normal operation, dirt will build-up on the emitter pins and upon the body of the ioniser. This will cause a reduction in performance. Typically, weekly cleaning is sufficient. However, equipment used in some heavy contamination areas, such as gravure printing or where plastic fumes are present, may require daily cleaning. Equally, in a Class 100 area, cleaning may only be required on a monthly basis. Before cleaning, ensure that the equipment is switched off. Emitter pins can be cleaned very effectively with a brush. A dry toothbrush is ideal. Ionising bars will need periodic wiping to clean grey deposits from the surface of the bar. A cloth moistened with a small amount of IPA or methylated spirits is recommended. Allow a moment to dry before switching on. Should you have any additional questions regarding the maintenance of Meech equipment please contact Meech International directly or you local Meech distributor. -
Page 13: Fault Finding
Fault Finding Tests must be completed by a qualified electrical engineer. If in doubt please contact Meech head office or your local distributor. CAUTION: Whilst no danger to personnel exists, it is essential that, with the exception of bars with a water resistant option, high voltage ionising equipment, makes no contact with water or water based fluids. Should such an event occur, disconnect immediately and return equipment to the manufacturer for water damage assessment. The Model 915EX ionising bar forms part of a system, comprising the bar itself and a Model 904 Power Unit. To verify where a fault may have occurred it is important to test each item of the system individually. Should more than one bar be connected to a power unit, these must be tested individually. To check the Model 915EX bar follow the procedure detailed below. 1. Switch off the electrical supply to the system and disconnect the IEC plug. - Page 14 2. Disconnect all ionising bars from the power unit. 3. Follow the test procedure for the Model 904 Power Unit. This can be found in the instruction manual of the Model 904.
- Page 15 4. Having checked the power unit, reconnect one Model 915EX ionising bar. 5. Using a high voltage probe and meter measure the voltage on the pins of the ionising bar. This voltage should be approximately 6.5 kV. CAUTION: This test must only be carried out when the installation area is non-hazardous. This may require the bar to be removed from its normal installation position. 6. If the voltage is below 4.0 kV then the bar should be returned to Meech for service and/or repair. 7. If there is more than one bar to test, disconnect the first item and repeat the above steps with subsequent bars.
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Page 16: Repairs And Warranty
Repairs And Warranty The 915EX bar is warranted by Meech Static Eliminators Ltd to the original purchaser against defects in material and workmanship for one year after purchase. Should any malfunction occur, please return the bar directly to Meech Static Eliminators or your local distributor. All products returned to the factory MUST be accompanied by a return authorisation number and must be shipped prepaid. For prompt service, ship the unit to the factory with the return authorisation number shown clearly on the label. Be sure it is well packed in a sturdy carton with shock absorbing material. Include a note stating the nature of the problem as specifically as possible, and also include instructions for returning the bar to you. We will pay one-way return surface shipping costs on any repairs covered under the warranty. Field repairs should not be undertaken during the warranty period. Repair attempts by unqualified personnel will invalidate the warranty. -
Page 17: Ce Approval
CE Approval An EC Declaration of Conformity for this product exists in respect of the Low Voltage Directive: 72/23/EEC (“LVD”) & Electromagnetic Compatibility Directive: 89/336/EEC (“EMCD”) Health and Safety Emission of Ozone: Considerably below international standard of 0.1 ppm. -
Page 20: Meech Static Eliminators Ltd
Meech International Meech Static Eliminators USA Inc Meech Elektrostatik SA Meech CE 2 Network Point 2915 Newpark Drive Kaiserbaracke 166 Gábor László utca 2 Range Road, Witney Norton, OH 44203 B-4780 St.Vith Budapest 1041 Belgium Hungary OX29 0YN, UK Tel: +44 (0)1993 706700 Tel: +1 330 564 2000 / 1 800 232 4210 Tel.: +49 (0)6555 3733 399...
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