sewerin EX-TEC Combi, Operating Instructions Manual

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5 Testing / maintenance
Testing display accuracy (adjustment)
The frequency of the tests must be fixed depending on the sen-
sors built-in and intensity of use.
The test must be carried out by a gas-supply company specialist,
a specialist company or by SEWERIN itself.
The test gas described (see section 5.3: Test gases) must be
used. The guidelines on the selection, installation, application
and maintenance of appliances for the detection and measuring
of flammable gases, oxygen or toxic gases (EN 50073 and
EN 45544-4) need to be observed
Moreover, national regulations BGI 518 and BGI 836 must be
complied with!
A full function test must also be carried out.
Servicing - maintenance and repair
Instruments must be serviced (and any necessary repairs car-
ried out) at least once a year, by SEWERIN Service , a specialist
company authorised by SEWERIN or an authorised specialist of
the gas-supply company.
These activities must be documented in writing.
The test plaque on the instru-
ment gives the date of the last
service and the scheduled date
of the next (e.g. 5/00 = May
2002).
Annual maintenance and repair must include at least the spe-
cialist care of the instrument, its settings and the replacement of
components with a limited lifetime.
Note:
Where instruments feature explosion protection
the applicable regulations must be observed!
Servicing operatives must be SEWERIN-
trained!
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