This function is designed to step you through each
stage of the Let-By/Timed Tightness Test allowing you
to Pass/Fail at the end of each stage and record the
results either to memory for future use or directly to
the optional IR (A740) printer.
1. From the main menu select “Measurement” as
outlined on page 10. From the “Measurements” menu
select “Tightness test” and the standby screen will be
displayed.
2. Press the center blue soft key to “Enter” and begin
the Let-By/Stablisation/Tightness Test.
3. On the first Let-By screen you can Zero the
pressure before connecting up any pressure tubes and
beginning the series of tests.
4. The memory location (0 - 99) can also be changed
at this point before the test commences by pressing
the right blue soft key to highlight the address location
number. Use the Up/Down arrow keys to select the
required numbered location then the centre blue soft
key “OK” to confirm the change.
5. Once you have selected the desired memory
address location and the pressure has been zeroed
you can begin the test procedures as follows.
6. Connect the pressure tube to the desired test point
and pressure up the 716 to the required pressure. The
Live Pressure Readings can be viewed in the top box
on all the following screens.
7. Once the desired pressure is reached the press the
centre blue soft key “Start” to begin the procedure.
8. The Let-By test will run for 1 minute then “Pass” &
“Fail” will be displayed as options on the centre &
right blue soft keys.
*Please note:
at any point during
any of the tests you have the option to “Stop” the test
by pressing the centre blue soft key. Stopping the test
will move you onto the Pass/Fail option and the length
of time the test had run for will be displayed.
Measurements - Tightness Test
22
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