32
Fault, Cause, Remedy
Fault
Cause
Remedy
Instrument switches off automatically.
Instrument has been left ready for measure-
ment for more than 4 minutes.
Switch on again.
Batteries discharged.
Replace batteries, page 28, resp. charge the
rechargeable batteries.
Instrument leaves menu-mode automatically
and shows measuring mode.
Instrument has an automatically switch off of
the menu after 120 sec. without use.
Reselect menu item.
Instrument cannot switched on.
Batteries discharged.
Replace batteries, resp. charge the recharge-
able batteries.
Insuffient volume, blowing interruption.
Testperson not blowing hard or evenly
enough.
Ask to blow harder and more evenly.
Service date expired.
The service period has expired.
Perform safety inspection, by trained service
personnel, e. g. from Dräger Safety.
No text in the display.
Instrument error, eventually caused by elec-
trostatic discharge.
Remove batteries (at least 2 sec.) and insert
them again, if the fault reappears call Service
of Dräger Safety.
Fault in display
Cause
Remedy
"Accuracy check error"
Accuracy check not successful.
Repeat accuracy check, if fault reappears,
call Service of Dräger Safety.
Measured concentration exceeds measuring
limits.
Use lower concentrations.
"Internal System ERROR"
with service code
Instrument error, no measuring function pos-
sible.
Remove batteries (at least 2 sec.) and insert
them again, if the fault reappears call Service
of Dräger Safety.
"Service date expired"
The service period has expired.
Perform safety inspection, by trained service
personnel, e. g. from Dräger Safety.
"Battery charging error"
No rechargeable NiMH batteries in the instru-
ment.
Replace batteries with rechargeable NiMH
batteries. Start charging.
