Refco REF-VAC Installation And Operating Manual page 5

ON/OFF
 Press the
 During switch-on, the display shows everything.
 If the measured value is greater than 18000 Microns, the display will not
show any value.
 When the vacuum is drawn, the display shows the value.
Choosing the measurement unit
UNIT
 Press the
(Pascal, Micron, mbar, Torr, mTorr, psi, inHg)
Illuminating the display
LIGHT
 Press the
Battery level indicator
 Check the battery level. When the empty battery symbol (
the batteries must be replaced in order to guarantee full function.
button, the device is now switched on.
button to change the measurement unit.
button to switch the display light on or off.
EN
) appears,
3