sewerin EX-Tec HS 610, Operating Instructions Manual, Page: 70 / 105

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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
(see section 7.3 )
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
section 7.3 ).