REFCO REF-VAC - Manual (Page 5)

3
EN
 Press the button, the device is now switched on.
 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
 Press the button to change the measurement unit.
(Pascal, Micron, mbar, Torr, mTorr, psi, inHg)
Illuminating the display
 Press the button to switch the display light on or off.
Battery level indicator
 Check the battery level. When the empty battery symbol ( ) appears,
the batteries must be replaced in order to guarantee full function.
ON/OFF
UNIT
LIGHT