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5 Maintenance
Test gas test unsuccessful
If a
Test gas …
test was not carried out successfully, the mes-
sage
Test gas not OK
appears.
A test may be unsuccessful for the following reasons:
Cause
Corrective action
Connections leaking
Repeat check, checking the
seal on the connections
Measurement values outside
the specified limit values
Adjustment required
(see section 5.2
)
5.2
Adjustment
A
WARNING! Danger of death due to incorrect adjust-
ment
Incorrect adjustment can lead to incorrect measurement
results. This means that the user may not be warned about
dangerous gas concentrations in time.
●
Only specialist technicians may perform adjustments.
●
Adjustments must be made in well ventilated rooms or
in the open air.
5.2.1
Scope
Adjustments must be made separately for each measuring range.
●
Zero point
●
Sensitivity
Note:
For each measuring range always adjust the zero point first, fol
-
lowed by the sensitivity.
Only gases for which the readings are outside the predefined
limits need to be adjusted during the adjustment process (see
