AQ EXPERT Instruction & Operations Manual
Version 1.13
Page 48 of 63
CHAPTER 11
MAINTENANCE
The AQ Expert Indoor Air Quality Monitor is a sophisticated analytical instrument
designed to perform accurate air quality measurements. However, because the monitor
is a portable, field/lab used instrument that can be used in many environments, care
must be taken to prevent physical and environmental abuse to help maintain trouble-
free operation.
There are some of the components that will require periodic inspection or replacement.
These are:
1. The disposable fiber line filter for particulates, located inside the of the monitor
2. The disposable round disk condensation filter for moisture, also located inside
the of the monitor
3. Gas sensor periodic replacement / Calibration
4. Printer paper replacement (separate optional wireless printer)
*Note: These stated intervals are dependent on the unit’s usage and applications
A. Fiber Line Filter and Condensation Disk Filter Replacement
The disposable fiber line filter is located inside the monitor located right in line with the
sampling pump. Its function is to prevent dirt & dust particles from reaching the
monitor’s pump and sensors. The disk condensation filter is also located in the same
area directly behind the fiber line filter. Its function is to prevent any residual
water/moisture from penetrating into the sensor area.
You must replace the filters when they become discolored or show any signs of cracks.
Never operate the AQ Expert without these filters
.
Frequency of filter replacement depends on the application this instrument is being used
in and the hours of active use.
INTERVAL
ITEM
PROCEDURE
Weekly
ZERO Check of ALL Gas Sensors
Perform using ZERO AIR
Weekly
ZERO Check of the CO
2
Sensor
Perform using ZERO AIR
6 Months
Inlet & Moisture Filters
Check and/or Replace
Annually
SPAN Calibration of ALL Gas Sensors
Perform or send to Factory
