Document: 333D012G
5-18-2007
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If the Ultraviolet (UV) Light doesn’t work-
1. Make sure the window is completely closed.
2. The Yellow indicator below the switch should be On and the Fluorescent Light should turn Off automatically.
3. Check for proper installation of the bulb in the lamp sockets.
4. Inspect the UV bulb; replace if necessary.
5. Have a qualified electrician check the power supply to the UV Lamp ballast.
6. If none of the above corrects the problem, the ballast may need replacing.
When there is uneven fan operation, or noise from the motor/blower assembly-
1. Open the electrical panel and check the multi-pin connectors to be sure they are securely engaged.
2. Check the speed controller for proper input power and output voltage consistent with the Test Report.
3. Remove the blower access panel and inspect the blower wheel for contact with the blower housing.
CAUTION: It maybe necessary to decontaminate the cabinet before removing the panel.
4. Check the blower for loose objects.
When the Viewscreen Sash Alarm is sounding-
NOTE: The indicator below the alarm-reset button will flash.
1. Make sure the window is at the correct position. The alarm should be silent when the window is at the proper
design opening or fully closed. You can silence the audible alarm for five (5) minutes by pressing the Alarm-
Mute button. The indicator will continue to flash until the window is set in the correct position. After five (5)
minutes, the alarm will sound again. You may press the Alarm-Mute button again.
2. Open the electrical panel and check to see if the proximity sensor cables are connected.
If the Fluorescent Light doesn’t work-
1. The blower switch should be turned on, and the Blue indicator below the Fluorescent Light switch should be lit.
2. Open the electrical panel and check that the bulb is properly installed in the lamp sockets. If the lamp flickers
and can be corrected by vigorous rubbing of the bulb, there is probably an improper ground.
3. Have a qualified electrician check the wiring and ballast for continuity. The wiring can be traced to the source
of a break. If none of the above corrects the problem, the ballast may need replacing.
If the magnehelic gauge has high or low readings-
NOTE: Always check for correct airflow balance first.
A higher reading than what was originally recorded on the cabinets test report could be an indication of the
following:
1. Blocked or partially obstructed work surface perforation (front and/or rear).
2. Towels or wipes are blocked the towel guards in the drain pan area.
3. The viewscreen is in the closed position and the in-house exhaust fan is still pulling air through the cabinet.
4. Incorrect airflow balancing.
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