MSA Kwik Draw UNIPHOS Gas-Tester Mode D'emploi page 9

Gas-Tester
5.2 Opening of the Detector Tube
Break off both tube tips using the tube breaker (see Fig. 2).
5.3 Inserting the Detector Tube
Insert the detector tube with slight pressure tightly into the pump
body. The arrow on the detector tube must point toward the Gas-
Tester (see Fig. 3).
5.4 Set Disc Counting Device
Before starting a measurement, set disc counting device to the
number given in the Instructions for Use of the detector tube used.
The disc counting device is turned by one digit for each stroke and
is engaged by the figure 0.
5.5 Actuate Pump
Compress operating ring of suction ball in the direction of the pump
body up to the stop on intended location (see Fig. 4). Do not try to
squeeze out the residual air contained in the sides of the suction
ball. Take off thumb and allow suction ball to expand freely (see
Fig. 5).
After the suction ball has expanded, keep the detector tube
for another 5 seconds (minimum) in the sampling area.
Repeat sampling procedure compressing and expanding as often
as indicated in the Instructions for Use. Move the disc counting
device on by one digit every pump stroke (see 5.4). Evaluate detector
tube reading as described in the Instructions for Use.
5.6 Flushing
After each measurement flush Gas-Tester with several blank strokes
(without detector tube). Smoke may be emitted depending on the
detector tube used.
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