User Manual LabModul 240
Page 7
www.labtec.de
Test
step
Operation
Comments
Controls
1.1.1
Wet the outlet valve rubber slice. Breathing con-
nection of mask close with the dust cap.
Flutter valve must be thoroughly moist
1.1.2
Mount mask on test head, pull straps tight,
inflate test head (3)
A few seconds is usually long
enough
1.1.3
Adjust negative pressure to exactly
-
#
mbar
(6)
By means of pressure relief valve
(7)
1.1.4
Pressure increase after # min at the LCD (LP)
read off and compare with the nominal value
1.1.5
Deflate test head (4), remove mask
1.2.1
Wet the outlet valve rubber slice. Breathing con-
nection of mask close with the dust cap.
Test only possible with tight
-
set A
-
valve. Use mark specific adaptors.
1.2.2
Mount mask on test head, pull straps tight,
inflate test head (3)
A few seconds is usually long
enough
1.2.3
Adjust negative pressure to exactly
-
#
mbar
(5)
By means of pressure relief valve
(7)
1.2.4
Pressure increase after # min at the LCD (LP)
read off and compare with the nominal value
1.2.5
Deflate test head (4), remove mask
1.3.1
Mount mask on test head, pull straps tight,
inflate test head
A few seconds is usually long
enough
1.3.2
Pump +10 l/min switch on.
1.3.3
Opening pressure at the LCD (LP) read off and
compare with the nominal value
1.3.4
Pump +10 l/min switch off (8).
1.3.5
Deflate test head (4), remove mask
1
Leakage
1.1
Leakage test with open A
-
valve at
--
#
mbar (standard test, should always be carried out)
1.2
Leakage test with sealed A
-
valve at +#
mbar (performed to locate any leak detected by test 1.1)
1.3
Opening pressure of the outlet valve
A 1
testing full
-
face masks
