Self-Calibration Feature
The Arm-Evac 250 contains advanced microprocessor-based sensing technology which allows for self-
calibration of the filter condition monitor by establishing clean airflow conditions (that is, 0% filter
blockage) and fully clogged filter flow conditions (that is, 100% filter blockage). Further, this procedure
insures that the airflow sensing process is consistent with and particular to the accessory configuration
array and filters being used.
NOTE
This procedure must be performed on the Arm-Evac 250 before initial operation, whenever a
filter change out occurs and whenever a change in system configuration occurs.
DO NOT make any adjustments to the accessory configurations during calibration as this will
disrupt the self-calibration process.
1.
Turn the Power Switch
(4)
on (“I”/”0”) whilst depressing the “Motor On/Off (
CALIBRATE
)” button
on the front touch panel
(2)
. The system will beep once. Continue to hold the “Motor On/Off
(
CALIBRATE
)” button
(2)
until the system beeps twice. This sequence signals initiation of the
self-calibration procedure. The LED lights will sequence from Green to Amber to Red on the
Filter Condition Gauge
(1)
several times. There is no need to adjust the Speed Controller
(3
);
the self-calibration mode over-rides the controller. Note that the Motor Speed LED’s
(3)
are
not illuminated.
2.
The Self-Calibration procedure will require a running time of approximately 2 minutes in
order to establish clean filter airflow (0% filter blockage) levels for all three speed settings as
well as fully clogged filter levels.
3.
When the first Green LED
(1)
remains illuminated and the Motor Speed LED
(3)
is illuminated,
the self-calibration procedure is complete. To initiate normal operation, depress the “Motor
On/Off (calibrate)” button
(2)
on the front panel & select desired motor speed
(3)
.
4.
Daily operations can be initiated by simply turning the Power Switch
(4)
(illuminates Green
when on) to the “On” (“I”) position and setting the 3 position speed controller
(3)
to the
appropriate position. A single beep will sound when the Arm-Evac 250 is turned on.
Arm-Evac 250 Filter Condition Display
Arm-Evac 250 Front Panel
1
2
3
4
The Arm-Evac 250 has a graphical Filter Condition Display
(1)
which continuously monitors filter condition.
As the system filter(s) collect particulates, LED’s on the Filter Condition Display will illuminate along the
graphical curve of the display.
9
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
