4-1
C H A P T E R 4
Troubleshooting
This chapter contains information for troubleshooting common issues
with the AeroTrak
®
+ Remote Particle Counter.
Instrument does not power up -
Status LED is off (should be
green or red)
Ethernet is plugged in but is not a
Power-Over-Ethernet device
(802.3at PoE+).
Plug cable into a PoE+ socket or
device (some hubs have both
PoE+ and non-PoE+.
External DC power is not
plugged in.
Use a TSI supplied DC power
supply.
Flow LED is flashing or off,
indicating a flow error (7201,
7301, 7501, 7310, 7510)
Vacuum line may be disconnected,
blocked, or kinked.
Check vacuum line to make sure
it is connected, unblocked and
not kinked.
Remove any obstructions
from inlet.
Vacuum level may be below
minimum requirements for flow.
Use a vacuum gauge to make
sure vacuum at outlet of particle
counter is at least 15 inHg.
Critical orifice may be blocked.
Flow LED is flashing or off,
indicating a flow error (6201,
6301, 6501)
Remove any obstructions from
inlet.
Pump may be not be functioning.
Status LED is red indicating a
service error or alarm threshold
being met.
Instrument may require routine
service due to a laser error, scatter
error.
Check service required date on
calibration label. Arrange for
service if required.
Internal instrument error.
A set alarm threshold is met.
This is normal if counting is
disabled.
Use software to enable counting.
Instrument does not meet zero
count specification (<1 particle /
5 mins)
An internal component has
become damaged due to operation
outside specifications.
The zero filter is not connected
properly and room air is leaking
into the filter assembly.
Check that the zero filter is
attached securely
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