TSI Instruments SidePak AM520, User Manual, Page: 70 / 98

Chapter 5 54
Troubleshooting Table
Symptom Possible Cause Corrective Action
Erratic zero reading. Leak. Check all connections
for leaks.
Carefully tighten sample
inlet screws (
DO NOT
over-tighten!).
If using an impactor,
remove, clean and re-oil
the impactor disc. Make
sure the O-ring is in place
and not damaged.
Make sure the impactor
disc is seated squarely
into the fitting, before
replacing the inlet (see
“
Using and Maintaining
Built-in Impactors
”, in
Chapter 4, for more
information).
Leak through
inlet gasket. Cover the inlet with
thumb. If there is a leak
the pump will continue
to run.
Remove the inlet and
cover the opening with
your thumb to block the
air flow. If the error ‘Flow
Blocked’ is displayed,
replace the inlet gasket
and re-assemble.
Dirty inlet and/or
sample tube. Clean inlet. Clean or
replace tubing.
Extreme temperature
swings during
operation. Zero instrument, at
ambient temperature,
before beginning test.
Protect from extreme
temperature swings.
Internal optics
chamber is
contaminated. Return to factory for
cleaning and servicing.
Nothing visible on
display. Unit not switched on. Press the ESC key firmly
for 2 seconds minimum.
Low or dead battery. Replace the battery or
plug in the AC adapter.