User Manual ZFG 3.0
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5 Care and maintenance
5.1 Care of loading device
After the measurement, the loading device must be cleaned of any dirt using a dry cloth. The
chrome-plated guide rod must not be greased. Heavy soiling must be removed using spirit or
kerosene. The drop weight tester must be stored carefully during transport, and the drop height must
be checked at regularly. The correct drop height is stated on the calibration report and on the
calibration nameplate on the drop weight.
5.2 Battery change
Batteries must be changed, when the warning “Battery empty” appears, the battery symbol signals
emptiness or when the device cannot be switched on anymore.
• Unscrew the two screws on the back of the device and open the battery compartment.
• Remove old batteries and replace them with new ones. Ensure that the batteries have the right
polarity. This is shown at the bottom of the battery compartment.
• When finished, close the battery compartment and screw it down.
Instead of batteries, it is also possible to use rechargeable batteries (4x1.2V). In this case, the state
of charge is invalid. A too low state of charge will be shown.
Picture 2: ZFG 3.0 with opened battery compartment
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