page 1 of 17 Technology for Vacuum Systems Instructions for use DVR 2 Analog/Digital Rough Vacuum Gauge Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully the validity of this document with respect to his product. manual-no.
page 2 of 17 Dear customer, Your VACUUBRAND vacuum gauge shall support you at your work for a long time without any trouble and with full load output. Thanks to our large practical experience we attained much information how you could add to an efficient application and to personal safety. Please read these instructions for use prior to the initial start-up of your controller.
page 3 of 17 Contents Safety information!......................................................................................................4 General information.............................................................................................................................4 Intended use........................................................................................................................................4 Connecting the device ..............................................
page 4 of 17 Safety information! General information ☞ Read and comply with this manual before installing or operating the equipment. ☞ Do not use the equipment if it is damaged. NOTICE Remove all packing material, remove the product from its packing-box, remove the protective covers and keep, inspect the equipment.
page 5 of 17 Allow the equipment to equilibrate to ambient temperature if you bring it from cold environment into a room prior to operation. Notice if there is water condensation on cold surfaces. Comply with all applicable and relevant safety requirements (regulations and guidelines). Implement the required actions and adopt suitable safety measures. The battery is free from mercury and cadmium. Recommended type of battery see section ”Technical data”.
page 6 of 17 NOTICE Ensure that maintenance is done only by suitably trained and supervised technicians. Interior components of the device can only be repaired at the factory. Returned products will not be repaired or calibrated until the completed health and safety clearance form has been received.
page 7 of 17 Technical data Type DVR 2 Measuring principle capacitive, absolute pressure, gas type independent Pressure transducer ceramic diaphragm (alumina), Pressure reading Pressure units Measuring cycle Automatic sleep mode Measuring range (absolute) analogue and digital LCD display mbar, Torr or hPa (selectable) automatic, once in 3s, once in 1s, three times in 1s (factory-set: automatic) operation time: 1-1000 minutes or continuous operation (”On”), (factory-set: 15 minutes) 1080 mbar - 1 mba
page 8 of 17 Use and operation Display adjustment mode/ warning symbol automatic sleep mode replace battery/ display of battery capacity Keys ON/OFF key UP/DOWN key MODE key pressure units, selectable The keys are on the rear side of the device underneath the symbols at the front side. Changing the pressure unit + Torr ➨ Switch the vacuum gauge off. ➨ Press ”MODE” key and keep it pressed while switching the DVR 2 on (”ON/OFF” key).
page 9 of 17 Pressure measurement Upon switching on, the absolute pressure (total pressure, independent of gas type) ranging from 1 mbar to 1080 mbar is displayed in the selected pressure unit (Torr, mbar or hPa). ☞ ��������������������������������������������������������� The pressure transducer was adjusted using factory standards. In general, there is no need for readjustment by the user because of the excellent longtime stability (see section ”Readjustment”).
page 10 of 17 ➨ Press ”ON/OFF” key to confirm the measuring cycle and to terminate the mode. Display of the battery‘s discharge status When switching off the device, the remaining battery capacity is displayed qualitatively by the number of arrows in the display. ☞ If the battery symbol appears in the display during measurement, the battery should be replaced. ☞ The correct operation of the device is no longer ensured.
page 11 of 17 Readjustment of the vacuum gauge DVR 2 The equipment has been adjusted at the factory. In general, there is no need for adjustment by the user due to the excellent longtime stability. Depending on operation conditions, type of application and accuracy requirements, an inspection and readjustment may become necessary. Adjustment at atmospheric pressure Admit air to the vacuum gauge. Make sure that the vacuum connection at the vacuum gauge is at atmospheric pressure.
page 12 of 17 Adjustment to a reference pressure Evacuate the vacuum gauge to an exactly known reference pressure within the range of 0 .... 20 mbar (0 .... 15 Torr). Switch the vacuum gauge to the adjustment mode (see ”Adjustment under vacuum”). ➨ Press ”UP/DOWN” key to adjust the reading from ”0” (”zero”) to the actual reference pressure in the vacuum line in the range of 0 to 20 mbar (0 to 15 Torr). ➨ Press ”ON/OFF” key to confirm the adjustment and to terminate the adjustment mode.
page 13 of 17 Replacing the battery Note: Some of the components on the printed circuit board are sensitive to electrostatic discharge. Do not touch components. If necessary, ground the printed circuit board and the person replacing the battery suitably. Attention: Use only a battery of the recommended type (see ”Technical data”). The battery must not be charged or connected to an external voltage. ➨ Unscrew the four countersunk head screws at the rear side of the housing with a Phillips screw driver.
page 14 of 17 Notes on return to the factory Repair - return - DAkkS calibration NOTICE If the measures listed in section ”Troubleshooting” do not work: Return the equipment to the factory for inspection and repair. Interference with the equipment (except replacement of the battery) voids all warranties.
page 15 of 17 Health and safety clearance form Devices will not be accepted for any handling before we have received this declaration. Please read and comply with ”Notes on return to the factory”. Oil filled pumps: Drain oil prior to shipping absolutely! 1. Device (Model): ................................................................... 2. Serial no.: ......................................... 3. Reason for return / malfunction: ............................................................................
page 16 of 17 EG-Konformitätserklärung EC Declaration of Conformity Déclaration CE de conformité Hersteller / Manufacturer / Fabricant: VACUUBRAND GMBH + CO KG · Alfred-Zippe-Str. 4 · 97877 Wertheim · Germany Hiermit erklärt der Hersteller, dass das Gerät konform ist mit den Bestimmungen der Richtlinie 2004/108/ EG. Hereby the manufacturer declares that the device is in conformity with the directive 2004/108/EC.
page 17 of 17 Disclaimer: Our technical literature is only intended to inform our customer. The validity of general empirical values and results obtained under test conditions for specific applications depend on a number of factors beyond our control. It is therefore strictly the users´ responsibility to very carefully check the validity of application to their specific requirements. No claims arising from the information provided in this literature will, consequently, be entertained.
