7 Inspection and Service
For regular maintenance und calibration by trained technicians we recommend concluding a service contract
with
INTEC Controls
or one of their authorized partners.
According to EN 45544-4, inspection and service must be executed at regular intervals. The maximum intervals
have to be determined and observed by the person responsible for the gas warning system according to the
legal requirements.
INTEC Controls
recommends applying the inspection and maintenance intervals as
prescribed in the general regulations of the gas measuring technique like VDI-2053, EN 60079-29-1 etc. The
inspection interval normally is three months. The recommended service intervals are depended from the
connected Sensor Cartridges. If different intervals are valid, always consider the shortest one.
Inspections and services must be documented. The date for the next maintenance has to be affixed to the
sensor.
7.1 Functional Tests (for Initial Operation and Maintenance)
Gas sensors should be controlled regularly by a competent person according to EN 45544-4. The functional
test should be carried out during each service, but at least once a year. The following has to be checked in
particular:
•
Maintenance / calibration interval not exceeded.
•
Check the Unit including measuring head for mechanical damage.
•
Remove dust deposits, especially at the gas inlet.
•
Check the Unit including measuring head for dust, dirt and moisture deposits and clean it with a dry
cloth if necessary.
•
The filter at the gas inlet has to be replaced if extremely dirty.
7.2 Trip Test with Reference Gas
When applying a reference gas with a concentration > alarm threshold 2, the set alarm thresholds are
exceeded, and all output functions are activated. It is necessary to check if the connected output functions are
working correctly (e.g. the horn sounds, the fan switches on, devices shut down). By pressing the push-button
on the horn, the horn acknowledgment must be checked. After removal of the reference gas, all outputs must
automatically return to its initial position.
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com
Specifications subject to change without notice. | GAMSC2_E_0619 | USA 200309 | Page 13 of 17
DC6 – UserManual
