H) Automatic Switch-Off Feature; Cleaning And Maintenance; General Information; B) Cleaning - VOLTCRAFT VC-740E AC Bedienungsanleitung

h) Automatic switch-off feature

The multimeter switches off automatically after 15 minutes if no buttons are pressed. This protects the batteries and
prolongs the battery life. The
The multimeter will beep 3 times approximately 1 minute before it turns off. If a button is pressed before the multimeter
switches off, the multimeter will beep again in 15 minutes. You will hear a long beep when the multimeter switches off.
To turn the multimeter back on, move the control knob or press any button (except "SELECT").
The automatic switch-off feature can be disabled.
To do so, turn the multimeter off, and then hold down the "SELECT" button while turning the control knob. The mul-
timeter will switch on and the
remain disabled until the multimeter is turned off using the control knob.

11. Cleaning and maintenance

a) General information
The multimeter should be calibrated once a year to ensure that it remains accurate.
The multimeter is maintenance-free (apart from occasional cleaning and replacing the batteries).
Refer to the section at the end of this chapter for instructions on how to replace the batteries.
Regularly check the device and test leads for signs of damage.

b) Cleaning

Always observe the following safety instructions before cleaning the device:
Opening any covers on the product or removing parts – unless this is possible by hand – may
expose voltage-carrying components.
Before cleaning or repairing the device, disconnect all cables from the multimeter and the meas-
ured object, and then switch the multimeter off.
Do not use abrasive detergents, petrol, alcohol or other similar chemicals to clean the device. These may corrode
the surface of the multimeter. In addition, the vapours emitted by these substances are explosive and harmful to your
health. Do not use sharp-edged tools, screwdrivers or metal brushes to clean the device.
Use a clean, damp, lint-free and antistatic cloth to clean the device/display and the test leads. Allow the product to dry
completely before using it again.
symbol will be displayed when the automatic switch-off feature is enabled.
symbol will no longer be visible on the display. The automatic switch-off feature will
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