BA 3208538/00
11
gas withdrawal valve (Fig. 3/1) as soon as the oil level is at
the top edge of the inspection window.
(5) If a chemical reaction has taken place in the glass tubes,
then their contents will have discoloured. A discolouration
from green to reddish to rust brow must take place in the
detector tube for
hydrogen in order to confirm the presence
of hydrogen.
A discolouration in the detector tube for
carbon monoxide
from white to green to brown indicates the presence of
carbon monoxide.
If fault gases have been detected, it is urgently recommended
to carry out an extensive examination of the transformer or
to carry out a qualitative analysis.
(6) Close the gas withdrawal valve (Fig. 3/1) again, carefully
remove the detector tubes and unscrew the Y-connector.
Screw the sealing cap (Fig. 3/2) back onto the gas withdrawal
valve.
(7) If necessary, re-establish the MSafe Buchholz relay’s
operational readiness (see BA 2722549).
4 Scope of supply for the MESSKO
®
Gas Quick Test
Detector tubes for carbon monoxide (5)
Detector tubes for hydrogen (5)
Detector tube cutter
Y-connector
Sealing plug (2)
Operating instructions
Transportation case
CAUTION
Hydrogen is an indicator of thermal and / or energy
error.
NOTE
In the case of carbon monoxide, there may be a small
amount of smoke formation on escaping from the
detector tube.
CAUTION
Carbon monoxide is an indicator of problems in paper
insulation.
4 Scope of supply for the MESSKO
®
Gas Quick Test
Summary of Contents for MESSKO
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