SF AllVac Commercial, Установка, эксплуатация и обслуживание, Страница: 19 / 36

RRGA-SVX01A-EN 19
Calibration
Pressure Transducer Calibration Procedure
AllVac unit is equipped with a sensitive pressure transducer which needs to
be calibrated prior to running the AllVac. This will take into account variations
in atmospheric pressure at various altitudes and locations.
RefTec recommends that this calibration procedure be performed if any of
the following events occur:
a) Any time a new pressure transducer is installed on the unit.
b) Any time that the unit is moved to a substantially different altitude or is ex-
posed to significantly different atmospheric pressure.
c) Any time that pressure readings appear to be questionable or there is any
reason to doubt the accuracy of the transducer readings.
Calibration Procedure Steps:
1. At power up, the AllVac Recovery Unit will display:
“AllVac COMMERCIAL RECOVERY UNIT”
“HAS POWER (PRESS START)“
2. At this screen you must press “ CANCEL ” twice within 5 seconds to enter
the CALIBRATION mode. The display will then show the following:
“OPEN PRESSURE TRANSDUCERS TO ATMOSPHERE “
“(THEN PRESS ENTER KEY)”
3. Now, with no hoses connected, open the liquid and vapor, system and
recovery tank, valves on the AllVac to the atmosphere and press
“ENTER”.
4. The screen will then display the following message:
“SYSTEM PRESSURE xx PSI”
“PRESS ENTER TO CALIBRATE THIS TRANSDUCER"
The system is displaying the raw, uncalibrated reading from the transducer. If
you press “ENTER”, it will calculate a calibration value and store it in the
computer’s nonvolatile memory. If you press “CANCEL”, a new calibration
factor will not be calculated.
5. It will then display the following message:
“RECOVERY TANK PRESSURE xx HG”
“PRESS ENTER TO CALIBRATE THIS TRANSDUCER”