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ARM-EVAC 250
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
filter air flow conditions (that is, 0% filter blockage) and fully clogged filter flow conditions (that is,
100% filter blockage). Further, this procedure insures that the air flow sensing process is
consistent with and particular to the accessory configuration array and filters being used.
Self-Calibration Procedure
NOTE
This procedure must be performed on the Arm-Evac 250 before initial operation,
whenever a filter changeout 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) The normal operating position of the Keyed Switch (item ®) is in a vertical position.
2) The Keyed Switch is supplied with 2 identical keys. To start the self-calibration procedure, insert
the key into the switch. Turn the Keyed Switch 1/4 turn clockwise (from normal vertical position).
3) Turn the Power Switch (item 6) to the On ("1")
position (Green switch light illuminates). An
audible single beep followed by a double beep
signals initiation of the self-calibration procedure.
The LED lights will sequence from Green to Amber
to Red on the Filter Condition Gauge (item ®)
several times. There is no need to adjust the 3
position Speed Controller (item 0); the self-calibration mode over-rides the controller.
4) The Self-Calibration procedure will require a running time of approximately 2 minutes in order to
establishing clean filter air flow (0% filter blockage) levels for all three speed settings as well as
fully clogged filter levels.
5) When the far right LED remains illuminated, the self-calibration procedure is complete. To
initiate normal operation, turn the Keyed Switch 1/4 turn counter-clockwise. The Red LED will turn
off and the Green LED will illuminate and normal operation will resume. Adjust the 3 position
Speed Controller (item CD) as necessary. To assure tamperproof operation, the key can be
removed from the switch.
6) Daily operations can be initiated by simply turning the Power Switch (illuminates Green when
On) to the "On" ("1") position and setting the 3 position Speed Controller (item 0) to the
appropriate position. A single beep will sound when the Arm-Evac 250 is turned on.
Orion Industry – 16 chemin de la Guy – 91160 Ballainvilliers – France - Tel +33 1 69 34 53 11
E mailto:info@orion-industry.com- W
http://www.orion-industry.com/
ARM-EVAC® 250 & 200 SYSTEMS
OPERATION
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