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7.2 Troubleshooting the PAV Controller
The PAV3 was designed to allow for maximum user flexibility while
also meeting the current ASTM, AASHTO, and EN specifications.
The controller is programmed to respond to specific situations to
allow for all of these criteria to be met.
Optimum Aging Performance is achieved by following these steps:
1. Preheat the PAV and empty the sample rack to the desired
conditioning temperature.
2. When PAV shows the Preheat Ready screen:
a. Remove the hot sample rack.
b. Leave vessel lid open.
c. Load samples into the sample rack.
d. Place sample rack inside the pressure vessel.
e. Close lid and secure bolts as described.
f. Press “Age” immediately after lid is secured to begin the
automatic aging process. Do NOT wait for temperature
of the PAV to recover to the setpoint before pressing
“Age” button.
3. Do NOT preheat samples prior to placing in PAV to a
temperature higher than the temperature to be used to age the
samples in the PAV. It is recommended to use room temperature
samples. The built-in soak time will preheat the samples
according to specification.