Dräger RAB 7000, Инструкция по эксплуатации, Страница: 38 / 236

38
Maintenance
Observe standard EN 60079-29-2 and the relevant national laws and
regulations.
During commissioning
 Conduct the lamp test (see page 30).
 Check the signal transmission from and to the gas transmitter
including switching of the gas transmitter to the special condition
maintenance.
At regular intervals,
the following points need to be set by the person responsible for the
gas detection system:
 Visual inspection to establish readiness for operation.
 Check remote access box for contamination and damage.
 Check electrical installation for the correct status.
 Conduct the lamp test (see page 30).
 Check the signal transmission from and to the gas transmitter
including switching of the gas transmitter to the special condition
maintenance.
Annually
 Arrange for inspection by trained personnel.
The maintenance intervals in each individual case are influenced and if
necessary shortened by technical safety considerations, engineering
processes and the technical requirements of the equipment.
We recommend a contract with the service organisation of Dräger
which also covers repairs.
Fault - Cause - Remedy
NOTICE
To avoid false alarms during maintenance, set the analogue output
signal of the gas transmitter to maintenance signal or ensure that
the alarm activation on the central controller is locked.
After completing maintenance, switch the analogue output signal of
the gas transmitter back to measuring mode where applicable (if set
to the maintenance signal) or unlock the alarm activation on the
central controller.
Fault Cause Remedy
Display off Wire faulty or
electrical installation
not correct Check the electrical
installation, in
particular the power
supply wire to the gas
transmitter
Display flashes "FLT",
"MNT" or "COM" Special status of the
gas transmitter See page 29, where
applicable, refer to
the manual for the
Dräger PIR 7000 /
Dräger PIR 7200.
Display flashes
"E00", "E01" …. or
"E12" Remote access box
is signalling a fault See table below
“CNP” Calibration not
possible Check sensor.
NOTICE
Faults in the remote access box are not transmitted to the gas
transmitter or to the central controller.