TSI Instruments Aerotrak 9303 - Replacing the Internal Filters

4-2 AeroTrak
®
Handheld and Remote Airborne Particle Counters
Rep l a c ing t h e Int e rnal F i lters
The internal filters should be replaced on the schedule documented in the
maintenance schedule (6003662). The steps below show how to replace
the two internal filters in the instrument.
Replacement parts needed are two (2) internal filters (6001577).
1. Open the unit by removing all the eight (8) 1/16” hex screws as
shown below: