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Summary of Contents for Witt MG 50-2ME
- Page 1 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 change management Copyright WITT-GASETECHNIK GmbH & Co KG, 2016, all rights reserved...
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Page 2: Table Of Contents
7.5 Functional check on the electrical equipment ................... 24 7.6 Setting the receiver pressure ......................24 7.7 Reset of the temperature monitor for the mixed gas temperature (optional) ......... 25 : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... - Page 3 Concise instructions on operation ................26 8.1 Switching on ............................26 8.2 Switching off ............................26 Appendices ........................ 27 : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013...
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Page 4: Notes On This Manual
In the “Description” section the function of the WITT gas mixer is explained based on the function scheme. The function of the integrated alarm module is addressed in the “Function of the alarm module”... -
Page 5: Rights To This Manual
As an appendix to this manual you will find the technical data on the WITT gas mixer, the schemes given in the technical data, along with drawings and a list of symbols. This provides a short overview on the function and the controls on the gas mixer. -
Page 6: Terms (In Alphabetical Order)
(P=1 bar; T=15 °C). The mixed gas output will depend on the mixture this value relates to air. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... - Page 7 Supply gas : All gases that are mixed including the pilot gas are termed supply gases. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013 witt@wittgas.com...
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Page 8: Safety Instructions And Precautionary Measures
Never check using a naked flame! If you find leaks, rectify them im- mediately; the applicable safety regulations are to be observed during this process. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- &... -
Page 9: Gas Mixer With Oxygen
The liability for the function of the unit passes in all cases to the owner or operating organisation as far as the unit is operated by persons who do not belong to WITT Service, is incorrectly maintained or repaired, or if the unit is used in a manner that does not comply with the intended usage of the unit, or is contrary to the applicable regulations. -
Page 10: Description
/ solenoid valve combination Number of gases Mixed gas output Big gas mixer (Gross-Mischer) : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013... -
Page 11: Applications For The Gas Mixer
Technical data on the gas mixer Please see the enclosed data sheet for the technical data on the gas mixer (see Section 9). : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 12: Function Of The Alarm Module
Note! In case of an alarm the connection X1:3 switches cyclically. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013 witt@wittgas.com... -
Page 13: Setting Up And Installation
If the operating organisation is not in a position to perform a check, a check in accordance with DIN VDE 0702 can be performed by WITT Service. Caution! In accordance with DGUV Regulation 3 a protective earth connection (PE connection) of protection class 1 must be provided. -
Page 14: Installation Of The Pipes
In the case of the use of flammable gases and/or toxic gases, ensure that the gas is piped away safely (e.g. above the roof). : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 15: Electrical Installation
X1:4 is the centre contact for the relay contacts. If there is no alarm, the centre con- PvDu tact is connected to X1:5. In the case of an alarm the centre contact is switched to X1:6. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 16: Commissioning And Operation
Note that the pressure drop above the constant pressure regulator unit and above the mix- ing valve must be at least 1 bar. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 17: Operating The Gas Mixer
Set the desired mixed gas composition to the desired composition. Re set the pilot pressure to the desired pressure. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013 witt@wittgas.com... -
Page 18: The Alarm Module
A connected alarm device (e.g. audible alarm device or alarm lamp) also announces the alarm. Check admission pressure and, if necessary, readjust. If necessary, check the gas supply. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013... -
Page 19: Malfunctions And Rectification
The inlet pressure has Increase inlet pressures dropped below the min. (see tech. data, Sec. 9) : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment D-58454 Witten Fax: +49 (0)2302 89013... - Page 20 The gas mixer is only permitted to be placed back in operation after it has been checked and repaired by us or an authorised centre. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment...
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Page 21: Taking Out Of Operation
Disconnect the power supply with the master switch and shut-off the pipe to the point of use. Mixed gas ceases to flow to the point of use. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 22: Servicing And Maintenance
In the case of repairs, modifications or conversions that have not been authorised by the manufac- turer in advance, the guarantee is void in its entirety. WITT-GASETECHNIK GmbH & Co KG is not liable for damages arising from failure to observe the instructions given above. -
Page 23: Checks And Servicing Tasks
The gas mixer may only be placed back in operation after it has been checked and repaired by us or an authorised centre. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... -
Page 24: Checking Inlet Filters For Blockages
If pressure transmitters are used on the inlet connections the pressures are set at the alarm mod- ule (see Section «2.3» separate manual of the alarm module). : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- &... -
Page 25: Reset Of The Temperature Monitor For The Mixed Gas Temperature (Optional)
If the mixed gas temperature exceeds the set minimum temperature for at least 3.5 °C an automat- ically reset of the temperature monitor occurs. The gas mixer automatically reassumes normal operation. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment... - Page 26 Disconnect the power supply and shut-off the pipe to the point of use. Mixed gas ceases to flow to the point of use. : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- & Control Equipment...
- Page 27 Manual for receiver pressure switch (MCS) Test log for the safety valve (if supplied) Instruction manual for WITT pressure receiver with safety valve (if supplied) : +49 (0)2302 89010 WITT-GASETECHNIK GmbH & Co KG Salinger Feld 4-8 www.wittgas.com Gas Safety- &...
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