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Chapter 4
Item
Part
Number
Description
Recommended
Replacement
Interval
814407
Membrane Filters
(Pack of 3)
Replace when
replacing the
gas sensors
above
814403
TSI
®
Calibrated
PM Replacement
Sensor
3 years
814404
CO
2
Replacement
Sensor
3 years
814405
Formaldehyde
Replacement
Sensor
1 year
1. Any maintenance should be performed only after powering the
unit down by disconnecting the USB cable from the power
adapter or removing the unit from the wall and disconnecting the
24 VAC power connector from the back panel.
C A U T I O N
NEVER
open the monitor when it is powered on or
connected to the power adapter!
The monitor contains very sensitive
sensors that are susceptible to electro-
static discharge (ESD) and ESD
precautions should be followed to
avoid damage.
Summary of Contents for AIRASSURE 8144
Page 6: ...iv Appendix A Specifications 39 Appendix B Status Flags and Error Codes 43 Examples 46 ...
Page 35: ...Operation 25 ...
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Page 44: ...34 Chapter 4 This page intentionally left blank ...
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