Prokit's Industries MT-1820 - Manual (Page 22)

21
Instrument Maintenance
This is a highly precise instrument, do not try to modify the inner
circuit at will.
1. Keep the instrument dry, and keep it away form dust and shock.
2. Do not store and use the instrument in high humility, high
temperature, combustible, explosive and strong magnetic places.
3. Clean the surface of the instrument with the damp cloth and
gentle detergent, do not use the strong solvent like the abrasive
cleaner and alcohol, etc.
4. Take out the batteries if do not use the instrument for a long time
to prevent the batteries from leaking the liquid to corrode the
instrument.
5. When LCD displays “
“ symbol, should replace the
batteries as the following steps:
5-1. Loose the screw that fixes the batteries, and remove the
battery case.
5-2. Remove the spent 1.5V batteries, and replace them by two
same type new batteries. It is better to use alkaline batteries for
lengthening the usage time.
5-3. Fit on the battery case and tighten the screw.
5-4. The steps of replacing the fuse are same as the above. When
replacing the fuse, please use the same specification, same type of
fuse.
Note:
1. Do not input the voltage more than 1000V DC/AC peak value.
2. Do not measure the voltage at the Current, Resistance, Diode
and Buzzer Range.
3. Do not use this instrument to measure before fixing the battery or