Troubleshooting
8-1
8
8
Trouble-
shooting
®
CO
2
/H
2
O ANALYZ
ER
Model LI-62
62
READY
ZERO
SPAN
CO
2
ON
OFF
FUNCTION
EEX,
ENTER
↓
↑
4
5
6
7
8
9
C
0
.
2
3
1
ZERO
SPAN
H
2
O
This section summarizes some things that might go wrong, and suggests
what to do about these problems should they happen.
Power ON Problems.
•
Nothing happens
.
Try another battery, or if using AC power, check the AC voltage switch on
the back panel to make sure that it is set properly. Check the fuses to see if
one has blown.
•
Display flickers, then goes out
.
The analyzer is probably shutting down because the battery voltage is too
low (<10.5 V). Try another battery.
Ready Light Won't Illuminate.
The ready light may fail to illuminate for a number of reasons; some of these
problems you can fix yourself.
•
Ambient temperature is greater than about 55
°
C.
•
CO
2
level in the reference cell is greater than about 3000 ppm.
•
CO
2
or water vapor in the detector, caused by internal soda
lime/desiccant bottle leaking or if the internal soda lime/desiccant has
been exhausted.
•
Span potentiometer has an open circuit.
