61
GASCOSEEKER 2-500 USER HANDBOOK
IS TEMPERATURE BELOW FREEZING?
Low temperature reduces battery capacity and may
increase pump current, thus causing SAMPLE FAULT
conditions. In addition any moisture or water on the filters
from previous tests which have not been completely
removed, may freeze and cause an increased load on the
pump causing a SAMPLE FAULT
ACTION:
CHECK OPERATION AT AMBIENT
TEMPERATURE.
REPLACE BATTERIES WITH ONES
KEPT AT AMBIENT.
CHECK FILTERS AND REPLACE AS
NECESSARY.
ZERO FAULT FLAG OPERATES
HAS INSTRUMENT BEEN ZEROED IN FRESH AIR?
If instrument has not been zeroed in fresh air in the last
test, or has gas in the flow path from being switched off
with gas in the sample line, then a false zero condition
may be detected by instrument.
ACTION:
ALLOW INSTRUMENT TO FLUSH
THROUGH WITH FRESH AIR. SWITCH
OFF AND INITIATE ZERO SEQUENCE IN
FRESH AIR.