CAB 4712 Service Manual

Also see for 4712: Assembly instructions Operator's manual Service manual

Contents

CAB 4712 Service Manual Manual pdf 28 page image

28 286 Adjustments6.7 Adjusting the VacuumVia the negative pressure the label is fixed to the applicator. This vacuum needs to be strong enough to hold thelabel and cover all suction apertures. It may not be strong enough to hinder the transport of the from the printer to theapplicator. This is dependent on the label material used.The default value of the vacuum is -0.6 bar.i Note!By adjusting the vacuum it is possible to prevent the label from being applied to the product. If the vacuumis too strong the label will not be released by the pad.If the vacuum is set too high the advancement of the label can be stopped before it reached the padpropperly.support airvacuum1Fig. 25 Vacuum throttle valve Use the throttle valve (1) to ensure that the label is sucked up correctly over its entire surface. To strengthen the vacuum turn the throttle valve setting screw counter-clockwise.Measuring point (MP V) of the vacuumMP V123With a Manometer that is capable of measuring pressuresranging from -7 to 7 bar the effective pressures can bemeasured.MP V: Vacuum target value -0,6 bar1. Demount cover.2. Cover both suction pads hermetically.3. Place the manometer at the MP V.- Remove tube (1) from the chain.- Y-connector (2) pressure supply to the pad4. Press the micro-switch (3) to manually lift the magneticvent with an active air flow to measure the pressure.5. If required adjust the pressure with the throttle valve.6. Remount cover.Fig. 26 Measuring point of the vacuum! Attention!After measuring the pressure ensure that the connections to and from the air pressure are securely fastenedback in place.