Isolation Systems Inc
Operation and Maintenance Manual PASS-1600ISO
2 October, 2020
Isolation Systems Inc
7
889 Erie Ave, North Tonwanda NY, 14120
Air Duct Installation
2.3. Controls and Displays
2.3.1. Controller & Accessory Case
Located in a foam lined case shown below, the PASS Controller includes a multifunction
digital display, red fault alarm lamp, audio alarm and silence button. The controller
case also includes the controller cord, air pressure line and T-handle wrench.
2.3.2 Digital display
The two-line digital display serves several functions, including a display of the room differential
pressure and the filter differential pressure as well as error signals.
2.3.2.1 Controller Alarms
•
A red indicator lamp next to the digital display will blink when a fault is detected and
shown in the display.
•
An audio alarm will sound when either a room monitor or filter differential pressure fault
occurs. It may be silenced by pressing the Audio Alarm Cancel button.
•
The Audio Alarm Cancel button also serves as an override of the differential pressure
failure alarm to allow the unit to operate in the recirculation mode.
