Recommendations Using The Battery; Installation And Putting In Operation; Adjusting Contrast - Promax 27 Manuel

3.1.2 Recommendations using the battery

If anticipating a long period of inactivity of the instrument, it is advisable to store it
with battery fully charged and at temperatures below 25 °C.
It is advisable in these cases doing every 3 months a cycle of charging /
discharging and a subsequent half charge (i.e. 50 %).
3.2

Installation and putting in operation

The PROMAX-27 has been designed for using as portable equipment.
A fully charged battery can power the instrument for over three hours. When
displaying the low battery indicator on the screen ( ), the battery must be recharged.
When starting up with a very low level battery, may be the PROMAX-27 could
start up, because of residual energy remaining at the battery, but the equipment will be
disconnected automatically BEFORE displaying on the screen the low level battery
indicator.

3.2.1 Adjusting contrast

LCD Adjustment contrast is done via the dial (see Figure 2.- [5]) located at the
right side panel of the instrument.
By turning the dial is possible to adjust the screen contrast to get the best display
in any environmental condition. By turning counter-clockwise, the contrast decreases.
By turning clockwise, it increases. The new value of contrast is kept when the
instrument turns off.
Page 10
USER'S MANUAL. PROMAX-27
09/2010