If you open the wire guidance box and look at the right hand top corner there should be a row of thumb dial type switches. The left hand dial is the most significant number, typical settings are 7 and 5.2KHz. You can change the setting by adjusting the dials to the required frequency. You will also need the current rating which may be printed on the line driver. If it is not you can access the settings on the Jungheinrich VNA machine if its available to you using the Jungheinrich software and identify the current rating which will be something like 35mA. The VNA models use a program called JustControl, you will also require access codes, both of which are available through a Jungheinrich dealer.