7. operating the multipress - Grass

7. OPERATING THE MULTIPRESS7-304 Setting the vertical boring speed Illustration 7-304-01No tools required.The Multipress operates with a continuously adjustable feeding speed and a continuously adjustableoperating speed.When the vertical bore head moves down, the pneumatic cylinder releases air by means of the throttle “1”and unimpeded by means of the activated roller valve (item 12 in the pneumatic wiring diagram). The feedingspeed is set with this first throttle “1”. Turning it clockwise decreases the feeding speed.The pneumatic valve (see item 12, wiring diagram) is released about 100 mm underneath the vertical borehead’s upper end position. In addition, the air must now be released by the throttle “2”. The operating speedis set with this throttle. Turning it clockwise decreases the operating speed.Throttle “1” corresponds to item 11 in the pneumatic wiring diagram.Throttle “2” corresponds to item 13 in the pneumatic wiring diagram.The following is generally valid for the operating speed:The harder the workpiece, the slower the operating speed should be; the less the tool cuts, the slower theoperating speed should be.The out-going air of the vertical cylinder is collected and used to blow out shavings and chips by the exhaustarbor in the gearbox (see item 24 in the pneumatic wiring diagram).The upward movement of the vertical bore head is always performed full speed.Illustration 7-304-01- First throttle is to set feeding speed. (See item 11 in pneumatic wiring diagram).- Second throttle is to set operating speed. (See item 13 in pneumatic wiring diagram).7-305 Setting the vertical travel limits Illustrations 7-305-01 and 7-305-02No tools required.Changeovers or adjustments may only be performed when the machine is out of operation.Lift the lever “1” up to a parallel position as shown in illustration 7-305-02. The travel limit is activated. Duringthe next drilling cycle, the bore head can only move up by about 80 mm.Lift the lever “1” to a slanted position as shown in illustration 7-305-01. The travel limit is not activated.During the next drilling cycle, the bore head can move up all the way.To activate the travel limit:In this position various cabinet fittings cannot be inserted. Pull the button knob “2” to the right. Move thelever “1” behind to the parallel position and engage in bore hole “3”.To deactivate the travel limit:Pull the button knob “2” to the right. Move the lever “1” to the front in the slanted position and engage in thebore hole “4”.The star in your cabinet55