TSI Instruments Aerotrak 9303 - Replacing the Internal Pump

4-4 AeroTrak
®
Handheld and Remote Airborne Particle Counters
Rep l a c ing t h e Int e rnal P u m p
The internal pump can be replaced to correct flow errors. The steps
below show how to replace the internal pump in the instrument.
Replacement part
needed for a 12 volt
pump is one (1) 12V
pump kit (S7000170).
Verify Pump is 12 volt
version. If it is not,
you will need to order
(S7000169) to update
Pump and Flow
control Board at the
same time.
1. Open the unit by
removing the
8 1/16” hex
screws as shown
in photos.