Operating instructions Differential pressure, vacuum
Contents
1. Horizontal installation arrangement electrical connections downward Actual switching points are 11 Pa lower than the scale AX wore With the safety cover removed contact with ter minals 1 2 and 3 poses a lethal C hazard mains power voltage Fig 4 Fig 5 Adjusting of upper lower switching point Dial B For higher switching point higher pressure turn in clockwise direction Allow pressure to increase gradually do not exceed max pressure limit adjust desired switching point with dial B Check the upper or lower switching points by raising and lowering the pressure several times and make any ne cessary adjustments Note Adjust switch within printed on scale only Do not turn the dial B into the area of the black mark EE Switching contact changes from NC 1 2 to NO 1 2 1 es Gea 4 eee eee j 6 aN Na aS eee A a a 1 Supply cable 2 NC contact 3 NO contact 1 all fixing brackets 02 2 02 2 Tube connection2. Operating instructions Differential pressure vacuum and overpressure switch Caution AN Before you take the pressure switch into operation make sure to read these operating instruc tions thoroughly In the event of damages due to the non observance of these instructions improper operati on or use of the switch for purposes for which it is not in tended the warranty becomes null and void We shall not be held liable for resultant consequential damages The switch is to be installed and removed by technicians only The applicable certified national safety regulations for the operation of pressure measuring devices shall be observed In the installed condition the respective device specific re quirements on the type of protection must be fulfilled Do not change adjustment of factory adjusted and paint sealed switches screw B and O Screw C was adjusted in the factory and the adjustment fixed with adhesive This ajjustment may not be chan ged Change the switching point with B screw only Adjust upper and lower switching points with the dial B In case of vacuum connect P2 Adjustments as indicated in the instructions except pressure vacuum Fasten bracket to switch with original factory sup plied screws only Fig 3 Recommended installation arrangement vertical factory calibration Horizontal installation arrangement electrical connections upward Actual switching points are 11 Pa higher than the scale
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