Anton Sprint eVo User Manual page 29

Sprint eVo 1 /eVo 2 /eVo 3
Symptom
Auto-zero failed
Alarm activates in CO
Room safety test
Cannot remember the
supervisor password.
During auto zero the
gas reading does not
stabilise.
Sometimes negative
gas readings are dis-
played.
Sometimes "!>" or
"!<" is displayed in
place of a number.
Cal due date has
changed.
Cause
Sensors exposed to
gas or faulty.
CO is reading greater
than 30ppm or 90ppm
(cooker).
Forgotten
Recovering from high
gas exposure or gas
sensor faulty.
Previously zeroed with
gas present.
Sensor is out of range. Contact support for advice.
Time/date has been
amended.
Troubleshooting guide
Recommended User Action:
Switch off and on, ensuring
you zero in clean air and sen-
sors are purged. If unit contin-
ues to fail auto-zero, return for
service.
Dependant on safety proce-
dures.
Supervisor password prevents
alteration of report header
which identifies owner of the
instrument. This provides secu-
rity against theft. So there is no
method to remotely unlock the
instrument. Return to supplier-
for reset
Ensure unit is purged and allow
sensor to recover or return for
service ASAP.
Turn off and on and repeat
auto zero in clean outside air,
allowing time for the CO sen-
sor to recover and stabilise.
Return for service if problem
persists or other failures are
observed.
Check current date and time
is correct. If the cal due date is
set to more than a year's time
then return for service ASAP.
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