Fault, Cause, Remedy - Dräger Alcotest 7410Plus RS Instructions For Use Manual

Fault, Cause, Remedy

Fault
Instrument switches off automatically
Yellow On-light is not lit after switching on
or is only faintly lit;
the display shows incomplete symbols
Green Ready-light not lit after switching
on and 4 min interval
No continuous tone when blowing
into the instrument
Fault message in display
E 0
E 1
Cause
Power supply unit / batteries discharged
Instrument has been left ready
for measurement for more
than 4 minutes.
The result of the last test has
been displayed for at least
60 minutes (standard versions).
Power supply unit completely
flat, or 12-Volt connection defective
Instrument malfunction
Instrument not yet ready
for measurement
Cause
Test person not blowing
hard or evenly enough
Sensor fault
Remedy
Charge rechargeable power supply unit,
page 22, or replace batteries, page 24
Recharge rechargeable power supply unit,
page 22, or replace batteries, page 24.
Check or replace 12-Volt connection, page 6
Call DrägerService
Wait until green Ready-light is lit
Remedy
Ask to blow harder and more evenly
Switch instrument off and on,
if fault message re-appears, sensor must be
replaced by DrägerService
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