Dürkopp Adler 767 Operating Instructions Manual

Also see for 767 -: Instructions Instructions Instructions Installation instructions

10.3 Electro-pneumatic rapid stroke adjustment HP 13 - 7The sewing-foot stroke and stitch rate are interdependent. A potentiometer is linkedmechanically with the adjusting wheel. By means of this potentiometer the control unitdetects what foot-stroke has been set and restricts the speed of rotation accordingly.The values are given in the table on page 17.The maximum stroke can be activated while sewing is in progress with the knee switch 2.Caution! Danger of injury!Turn off main switch!Adjust the sewing-foot stroke only with the machineswitched off.Operation mode of the quick stroke adjustmentThe activation period of the maximum sewing foot stroke depends on the set operationmode. It is possible to choose between three operation modes.The individual operation modes are determined by the adjustment of the parameters F-138and F-184 at the control panel (see enclosed instructions of the motor manufacturer).Operation mode Operation / ExplanationKeystroke modeF-138 = offF-184 = 0The maximum sewing foot stroke remainsengaged as long as the knee switch 2 is actuated.Push-lock modeF-138 = onThe maximum sewing foot stroke is engaged byactuating the knee switch 2.By actuating the knee switch once again themaximum sewing foot stroke is disengaged.Keystroke modewith min. speedF-138 = offF-184 > 0The maximum sewing foot stroke remainsengaged as long as knee switch 2 is actuated.After releasing the knee switch the machine sewswith maximum sewing foot stroke until the setminimum speed is reached (parameter F-184).Then the seam is continued with normal sewingfoot stroke.3612