Witt MG 100-2ME, Instruction Manual

Page 1: ...T GASETECHNIK GmbH Co KG 2016 all rights reserved Instruction Manual for WITT Gas Mixer MG 50 100 200 2ME MG 50 100 200 2ME PvDu MG 50 100 200 2ME GB Issue 29 04 2016 This issue is not subject to chan...

Page 2: ...for setting up 13 5 3 Safety instructions for installation 13 5 4 Installation of the pipes 14 5 5 Electrical installation 15 5 5 1 Connection of the floating contacts 15 6 Commissioning and operation...

Page 3: ...Co KG Salinger Feld 4 8 49 0 2302 89010 www wittgas com Gas Safety Control Equipment D 58454 Witten Fax 49 0 2302 89013 witt wittgas com 8 Concise instructions on operation 26 8 1 Switching on 26 8 2...

Page 4: ...ot for get to state your company your name and your telephone number Our address is WITT GASETECHNIK GmbH Co KG Salinger Feld 4 8 D 58454 Witten Tel 49 0 2302 89010 Fax 49 0 2302 89013 You can of cour...

Page 5: ...d of the list of symbols and function scheme you can identify components in the gas mixer 2 3 Rights to this manual This manual is the copyright of WITT GASETECHNIK GmbH Co KG Without the prior writte...

Page 6: ...ure regulators Both chambers in the dome loaded pressure regulator are subjected here to a gas the pilot gas this results in exactly the same pressures being established at the outlets of the dome loa...

Page 7: ...suffi cient gas inlet pressure even if it is not used in the mixing process itself Pilot pressure regulator The pressure to be applied to the dome loaded pressure regulator is adjusted on the pilot p...

Page 8: ...ly persons who have been instructed on the operation of the system and who have read and understood this manual are permitted to use the system Observe national technical regulations on the handling o...

Page 9: ...areas with an explosion hazard In the case of unauthorised unapproved changes modifications or conversions to the gas mixer the guarantee is void 3 2 Gas mixer with oxygen Caution In the case of the u...

Page 10: ...ie in the mixed gas outputs The gas mixer is specified in more detail by further additions Please see the information in the en closed technical data for the specification of your gas mixer see Sectio...

Page 11: ...and GB versions the unit is equipped with inlet pressure monitoring that is automatically activated when the power supply to the unit is switched on If the inlet pressure for one of the gases drops be...

Page 12: ...version the solenoid valve 27 also closes and the audible alarm device 84 emits an audible warning signal Note For more information see separate manual of the alarm module 4 4 1 Technical data on the...

Page 13: ...nstallation Caution Prior to initial commissioning and after changes repairs or expansion of the system unit the safety checks required by DGUV Regulation 3 reference to DIN VDE 0100 DIN VDE 0701 DIN...

Page 14: ...leaned pipe system If higher soiling is expected additional fine filter must be installed by customer These filters must be designed for the pressure and gas flow necessary for the mixing system Willi...

Page 15: ...electrical circuit diagram must be per formed in accordance with VDE 0100 Observe following instructions Note The usage of cables that are not approved can result in irreparable damage to the cables i...

Page 16: ...vent pipe Open the gas supply pipe for the gas that is not used as the pilot gas adjust the inlet pressure see technical data and observe the inlet pressure gauge Open the gas supply pipe for the gas...

Page 17: ...ousing to check the inside components 6 3 Operating the gas mixer Once you have placed the gas mixer in operation as described in Section 6 2 and checked for leaks to atmosphere proceed as follows Ope...

Page 18: ...If the OK LEDs are illumi nated then the associated gas pressure is adequate and there is no alarm condition Note In the event of alarm only the channels marked with the gas types are of importance Ch...

Page 19: ...section of the supply pipe too small Filter in the inlet blocked The inlet pressure has dropped below the min Cylinder regulators are designed for flow setting not pressure setting See instructions on...

Page 20: ...x value switching point check cor rect setting of pressure switch first Solenoid valve faulty Contact WITT GASETECHNIK See manual alter setting of pressure switch according to data indicated in manual...

Page 21: ...ot gas Leave the gas safely flow away through the vent pipe and observe the inlet pressure gauge till there is no pressure Shut off the gas supply for the pilot gas Leave the remaining pressure to saf...

Page 22: ...tructions for servicing and maintenance Caution The gas mixer may only be opened by authorised trained personnel Caution During all maintenance and repair work the applicable national health and safet...

Page 23: ...insulation All piping tubing and fittings shall be tested and proved leak tight on a regular schedule with inert gas document this check Only approved test methods shall be used e g use of leak detec...

Page 24: ...ice is to be simulated every six months by means of insufficient pressure Proceed as follows Switch on the unit electrically If there is no gas pressure or the gas pressure is below the minimum pressu...

Page 25: ...the reset must be done manually or occurs automatically see technical data Manual reset standard If the mixed gas temperature exceeds the set minimum temperature for at least 3 5 C proceed as followin...

Page 26: ...G200 see the special hints for setting the proportional mixing valve in Sec 6 3 1 On the proportional mixing valve set the required mixed gas composition in vol Turn the pilot pressure regulator to th...

Page 27: ...x 49 0 2302 89013 witt wittgas com 9 Appendices Technical data Parts list Projection drawing if existing Function scheme Electrical circuit diagram Symbol key for function schemes Manual for receiver...