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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 ve minutes* The test cycle can be stopped at
any time
The LT 600 automatically con gures the test cycle in
normal operating mode
In laboratory mode, you can use the arrow keys to
con gure 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 rmware version appears in
the display If this is the rst 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
The standards state
design
Number input up
Letter input up
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 ow 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)
Cursor up
Scroll
Print
Cursor down
Right
Next
Select
Con rm
New
Stop
7
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