RKI Instruments GX-94 - Manual (Page 42)

Page 41 GX-94 Operator’s Manual
MAINTENANCE
Main Batteries
1. Check the battery voltage periodically by pressing the DISPLAY
button to reach the Battery Voltage Screen. Replace the batteries
before the voltage drops to the operational limit (see Alarms, Low
Battery).
WARNING
TAKE THE GX-94 TO A NON-HAZARDOUS LOCATION
BEFORE REPLACING THE BATTERIES.
2. To replace the batteries, unscrew the battery compartment cover
retaining screw and remove the cover. Remove the batteries and
verify that the battery compartment and electrical contacts are
clean. Insert fresh batteries (alkaline or fully-charged Ni-Cd)
according to the polarity (+/-) markings in the compartment and
replace the cover.
Note
The batteries continuously supply a bias voltage to maintain
the toxic sensors, even when the instrument is off (see Sen-
sor Maintenance). The power drain is minimal, but will result
in a normal discharge of the batteries over a period of several
weeks.
Note
If the batteries are fully discharged before replacement, allow
up to 1/2 hour for the toxic channels to show a normal
response.