DeFelsko PosiTest AT v.4.0 - Manual (Page 8)

Page 9
6. Remove the dolly from the actuator assembly.
7. Readings may be stored into memory by pressing the button (pg. 10).
All settings and test results in memory are retained during power-down.
The red button may be pressed to stop the pull test at any time. The
maximum pressure value will remain on the display while the pump retracts the
actuator. This value can be stored into memory and will be uniquely identified by
the optional PosiSoft software. Stopping the pull test before destruction is handy
when specifications allow the test to be stopped when required adhesion
strengths have been exceeded. Uncouple the actuator from the dolly and then
remove the dolly from the surface with a sharp, sideways hammer tap.
Troubleshooting (PosiTest AT-A)
CAUTION: To avoid injury, keep fingers away from the quick coupling
and actuator assembly until the pull test has completed and the actuator
has been fully retracted. Press to stop the pull test at any time.
Instrument is unresponsive or will not power down
In the unlikely event that the PosiTest becomes unresponsive or will not
power down, press and hold the button, then press the
button. The instrument will power down.
Stage 1. Initiation - the display shows a blinking "0".
Stage 2. Priming - the pump applies initial pressure to the dolly.
Stage 3. Test - when the priming pressure has been achieved (see step 5 on pg.
7) the instrument begins calculating and displaying the pull rate established by the
user. Pressure build-up stops when the dolly is pulled from the surface or when
the button is pressed.
Stage 4. Retraction - the maximum pull-off pressure value blinks on the display
while the pump retracts the actuator. The buttons are locked during this stage.
4. Press the button to ready the instrument. This prepares the PosiTest
for the test by clearing the display and zeroing the instrument.
5. Press the button again to start the test that consists of 4 stages
that occur automatically: