KERN & SOHN ALT 250-4B - Manual (Page 22)

22 ALT_B-PLT_A-PLT_F-BA-e-1333
 Levelling balance
 Level balance with foot screws until the air bubble of the
water balance is in the prescribed circle.
 Check levelling regularly.
6.4 Connect and switch-on power supply
Before connecting the mains adapter check if the printed voltage value is the same
as the local supply voltage. Only use KERN original mains adapter. Using other
makes requires consent by KERN.
 Supply power to balance via mains adapter.
 The balance will carry out a self-test Then the balance is set into stand-by
mode, „OFF“ is displayed.
 To switch on press the ON/OFF button. During the display „CAL“ adjustment
is automatically carried out with the internal adjustment weight (see chap.
7.2). As soon as the weight display appears, the balance is ready for
weighing.
 To switch off, press the ON/OFF button again. The balance returns into
stand-by mode.
6.5 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, always disconnect the balance from the power supply.
With your balance, only use accessories and peripheral devices by KERN, as they
are ideally tuned to your balance.
6.6 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.