41
Maintenance
Maintenance
Maintenance intervals
Before starting operation:
● Check the calibration, see page 42.
● Check the transmission of signals to the control unit and the triggering of
alarms, page 73.
At regular intervals,
to be defined by the person responsible for the gas warning installation:
● Check the transmission of signals to the control unit and the triggering of
alarms, page 73.
If a selective filter specific to the sensor is being used:
● Replace the selective filter –
See the related operating instructions for the sensor for details of the capacity
of the selective filter being used.
At regular intervals defined in accordance with the sensor being used by the
person responsible for the gas warning system:
● Calibrate the sensor, see page 42.
The interval for regular calibration depends on the sensor being used and on the
operating conditions.
The transmitter calculates, from the selected calibration interval (see page 54),
when the next calibration is due.
Specific calibration data for the sensor, see the operating instructions for the sen-
sor.
Every six months:
● Inspection by specialists.
The inspection intervals must be established in each individual case and short-
ened if necessary, depending on technical safety considerations, engineering
conditions and the technical requirements of the equipment.
We recommend that a service agreement be concluded with DrägerService
and that repairs also be carried out by them.
When using the pump module:
● In order to check for leaks, measure the flow at the inlet point and behind the
transmitter.
As required:
● Replace sensor, page 44.
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