Table of Contents
Summary of Contents for Jesco GW 702
- Page 1 GW 702 Gas Warning Device for Chlorine Gas, Chlorine Dioxide and Ozone Operating Manual Read this operating manual before using the equipment. To be retained for future reference. Dosing Liquids Conveying Gases Control Systems...
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Page 2: Table Of Contents
13.6 Power supply backup system (accessory) ......................24 13.7 Disposal ................................ 24 14. Service ...................................25 15. Spare parts ................................26 Device revision ................................26 Index.....................................27 Warranty claim................................28 CE declaration of conformity ............................29 2 | Operating Manual GW 702 | Table of Contents... -
Page 3: General And Safety Instructions
Risk of electric shock. Connect the device only to a SCHUKO socket outlet protected by a ground fault circuit interrupter (GFCI). Contact a qualified electrician if you cannot verify that the connector is protected by a GFCI. General and Safety Instructions | Operating Manual GW 702 | 3... - Page 4 The device may only be modified or converted in consultation with the manufacturer. If errors and hazards result during operation due to incorrect configuration of the unit, any liability is excluded. Use only the manufacturer's spare parts and sensors. Otherwise the warranty is invalidated. 4 | Operating Manual GW 702 | General and Safety Instructions...
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Page 5: Before Start-Up
Checking the function (see chapter „12 Check function“ on page 22). 2.4 Part numbers Part No. Description 23600250 Gas warning device GW 702 for chlorine gas, 1 sensor 23600251 Gas warning device GW 702 for chlorine gas, 2 sensors 23600252 Gas warning device GW 702 for chlorine dioxide, 1 sensor... -
Page 6: Functional Range
3.1 Measurement amplifier GW 702 The measurement amplifier GW 702 is the central control unit and is installed where it can be accessed by operators. It allows measurements to be checked and alarm thresholds set. -
Page 7: Dimensioned Drawings
4. Dimensioned drawings Fig. 4.1: Measurement amplifier GW 702 Fig. 4.2: Sensor holder Fig. 4.3: Power supply backup system (accessory) Dimensioned drawings | Operating Manual GW 702 | 7... -
Page 8: Technical Data
3x M16 x 1.5 (cable diameter 5 … 10 mm) Connections Spring terminals for cable up to max. 1.5 mm Operating temperature 0 … 50 °C Storage temperature -20 … +65 °C Air humidity 0 … 90 % rH, non-condensing 8 | Operating Manual GW 702 | Technical data... - Page 9 -10 … +40 °C Storage temperature -10 … +40 °C Air humidity 10 … 90 % rH, non-condensing Air pressure 900 … 1100 hPa Service life 2 years, depending on the operating conditions Technical data | Operating Manual GW 702 | 9...
- Page 10 0 … 90 % rH, non-condensing Housing Steel sheet, powder-coated, lockable Dimensions (W x H x D) 380 x 380 x 210 mm Protection class IP 66 Weight approx. 18 kg 10 | Operating Manual GW 702 | Technical data...
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Page 11: Assembly And Installation
220 nF 260 V 47 Ohm 2 Watt ATTENTION! The assembly location must be selected so that the device is not subject to any mechanical load or chemi- cal exposure in any way. Assembly and Installation | Operating Manual GW 702 | 11... -
Page 12: Sensor
30 cm above the ground. Ensure that the sensor is not subjected to any strong wind, heat or direct sunlight and that the sensor element can not get wet at any time. 12 | Operating Manual GW 702 | Assembly and Installation... -
Page 13: Wiring Diagram
A (-) Interface B (+) Jumper plugged = load resistor activated Digital input Potential-free 24 V DC Output for switch Ground Fig. 6.1: Wiring diagram for measurement amplifier GW 702 Assembly and Installation | Operating Manual GW 702 | 13... -
Page 14: Drill Template
6.4 Drill template Width x height Measurement amplifier GW 702 151 x 120 + 15 mm 14 | Operating Manual GW 702 | Assembly and Installation... -
Page 15: Operation
When you have set the required value, save your setting by pressing the key . The double triangle disappears - the new value is saved. Enter password Enter password Enter password Code Code Code Operation | Operating Manual GW 702 | 15... -
Page 16: Menu Overview
There are various languages available for the device. Code 86 is required for the setting. Measured value display Main menu Basic Settings Language Presently the languages German, English, French and Spanish are installed. 16 | Operating Manual GW 702 | Operation... -
Page 17: Configuration
No. of RS 485 Select Alarm The GW 702 can be operated with two sensors. When delivered the devices are preset to one or two sensors. If you subsequently connect a second sensor, you must then activate Sensor 2 in the menu Basic Settings. -
Page 18: Sensor Slope
If the device is not in the measured value display, press the key "ESC". Press the key . Press the key to start the sensor test. NOTE! The sensor test is not accessible if an alarm is present. 18 | Operating Manual GW 702 | Configuration... -
Page 19: Operating Modes
20 seconds after power-up or after a voltage interruption with a start delay. Data logging The data logging of the measurement amplifier GW 702 takes place automatically. The status is not indi- cated in the display. The measured values of the sensors are visible over the menu Service (see section 13). -
Page 20: Relays
When limit value 1 is exceeded the endangered area and all surrounding rooms must be evacuated. The actions listed in the health and safety regulations and chlorine alarm plans must be taken. If a limit value is exceeded, the message "Limit value exceeded" appears in the display. 20 | Operating Manual GW 702 | Relays... -
Page 21: Configuration
This way an alarm is raised even during a power failure. 10.3 Relay Test Manual test of the relays under measured value display Service Relay Test Test Rel. 1/2/3 Relays | Operating Manual GW 702 | 21... -
Page 22: Analogue Output And Interface
Operational check of the switching steps for alarm activation. For this the sensors are to be impinged on with test gas with a concentration above limit value 2. • Operational check of the relay contacts. • Operational check of the optical and acoustic warning devices. 22 | Operating Manual GW 702 | Analogue Output and Interface... -
Page 23: Maintenance
The sensor is calibrated at works. Any unqualified changes made to the settings will deactivate operation. The GW 702 gas warning device is factory-calibrated prior to delivery. If calibration is required, it must only be performed by authorised specialist personnel. -
Page 24: Functional Test Of The Sensor With Test Gas Application
The equipment was manufactured in accordance with the ROHS guideline and the waste electrical equip- ment legislation. The manufacturer will take care of disposal if the equipment is returned free of charge. It should not be disposed of as domestic waste! 24 | Operating Manual GW 702 | Maintenance... -
Page 25: Service
With this function you can erase all settings performed and restore the original delivery state. The procedure takes a few seconds. The device then switches back automatically to the measured value display. Service | Operating Manual GW 702 | 25... -
Page 26: Spare Parts
It contains all the technical information required for installation, start-up and maintenance. Should you have any questions or require further information regarding this operating manual, please contact the manufac- turer or its official national representative. 26 | Operating Manual GW 702 | Spare parts... -
Page 27: Index
Interface ...............22 Test gas ...............24 Turn-on delay ...............19 Keys ................15 Warranty claim..............28 Wiring diagram .............13 Language ..............16 Limit value ..............20 Maintenance ..............23 Measurement amplifier............6 Measuring gas ..............6 Measuring principle ............9 Measuring range .............9 Index | Operating Manual GW 702 | 27... -
Page 28: Warranty Claim
..........................................................................Setup (date): ................................... Runtime (approx. number of operating hours): ........................Please indicate the specific features of the installation and enclose a simple sketch showing materials, diameters, lengths and heights. 28 | Operating Manual GW 702 | Warranty claim... -
Page 29: Ce Declaration Of Conformity
(PT) Certificado de conformidade da UE Os abaixo mencionados Lutz-Jesco GmbH, Am Bostelberge 19, 30900 Wedemark, por este meio certificam que ao sair da fábrica o aparelho abaixo mencionado está de acordo com as directrizes harmonizadas da UE, padrões de segurança e de produtos específicos. Este certificado ficará... - Page 30 Notes 30 | Operating Manual GW 702 | Notes...
- Page 31 Notes Notes | Operating Manual GW 702 | 31...
- Page 32 East Asia Middle East Lutz-JESCO America Corp. Lutz-Jesco Lutz-Jesco Middle East FZE ISO 9001:2008 East Asia Sdn Bhd ISO 14001:2004 Quality Management ISO 9001:2008 P.O. Box 9614 55 Bermar Park Environmental Management ISO 14001:2004...