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Maintenance
Maintenance
Maintenance Intervals
Observe EN 50073 and respective national regulations.
Daily
● Visual inspection to determine readiness for operation – the green status light must be on.
While commissioning
● During the automatic self-test, check the function of the yellow and green status lights.
● Check zero-point calibration.
● Check the current interface and if required also the HART
®
communication.
● Check measuring value output and alarm activation by applying suitable test gas.
Prior to the inspection: Disable the alarm activation in the central device. Re-activate it when
the inspection is over.
At regular intervals,
that are to be determined by the persons responsible for the gas detection system –
recommended after 6 months:
● Check the zero-point and sensitivity calibration (if necessary, temporarily disable the alarm
activation in the central device and re-activate it afterwards).
● Check signal transmission to central device and alarm activation.
● A calibration interval of more than 6 months is possible under the following conditions:
After an operation period of a maximum of six months, a check should be made of whether
an obstruction can occur in the gas entrance to the measuring cuvette within the given
application, e.g. due to dust, dirt, etc. If a restriction to the function caused by these effects
is excluded then the calibration interval can be prolonged – recommendation: Maximum
24 months.
Yearly
● Inspection by competent personnel.
The inspection intervals are to be individually determined with regard to safety regulations,
process control conditions and device-related requirements.
We strongly recommend that a service contract be signed with Dräger Safety to have them
handle repairs and maintenance.
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