6. Test procedure
If possible, the duct section being tested should be
brought to a positive or negative test pressure equal
to the operating pressure p
that the the pressure must be maintained to within ±
5% for five minutes* . The test cycle can be stopped at
any time .
The LT 600 automatically configures the test cycle in
normal operating mode .
In laboratory mode, you can use the arrow keys to
configure the test cycle yourself .
If the selected pressure cannot be reached, the
leakage flow rate can be tested at a lower pres-
sure in accordance with DIN EN 12599 and then
extrapolated for the higher pressure. The device
evaluates the lowest pressures itself.
7. Using for the first time, and performing a test
Use the supplied power cable to connect the Lindab
LT 600 to the mains (230 V, 50 Hz or 110 V, 60 Hz) (11) .
Switch on the device with the power switch (1) . When
the device powers up, the firmware version appears in
the display . If this is the first time the device has been
used, the display shows the user prompts, otherwise
it shows the operating mode most recently selected in
setup .
Back
Menu
Cursor right
Press the MENU key once to go to the main menu and twice to open the input screen for a test .
manual-LTEST-1082_EN-DE-FR-SE.indd 7
. The standards state
design
Cursor up
Number input up
Letter input up
Scroll
Print
Cursor down
Number input down
Letter input down
You should then select a lower test pressure – the
device automatically performs the evaluation on the
basis of the airtightness class .
If the measured leakage flow rate is outside the meas-
uring range of the adapter used, change the adapter
(enter the change of adapter) .
It is not necessary to correct the test values to take
account of different temperatures or the air pressure .
Please note the relevant recommendations and com-
ments in DIN EN 1507, DIN EN 12237, DIN EN 1507,
DIN EN 15727 and DIN EN 12599 .
* This 5 minute requirement is now virtually obsolete
because modern test equipment is generally much
quicker to bring the test conditions to a stable state.
7.1 Control panel functions
Note that the display (6) changes according to the
selected status . The display shows the test values and
the options that can be selected from the membrane
keypad (8) .
Right
Next
Select
Confirm
New
Stop
7
2012-03-28 12:32:38