TSI Instruments SidePak AM520, User Manual

Page: 71 / 98

Troubleshooting 55
Symptom Possible Cause Corrective Action
Mass concentration
number is blinking
and stays on the
same value. Instrument has
reached the
calibrated limit of its
range (multiplied by
Cal Factor).
N/A
No keypad response.
Display shows a red
lock icon. Keypad is locked out.
When the keypad is
locked, the display
shows a red lock icon. To unlock the keypad,
press and hold the ▲ key
and press

.
See Data Logging in
Chapter 3 for more
information.
The battery icon is
flashing red. Low battery charge. Recharge battery or use
AC adapter.
Green LED on battery
flashing on for
3 seconds and off for
1 second. The battery is either
too hot or too cold
to charge. Allow battery to warm or
cool to room temperature.
Green LED on battery
flashing rapidly. Internal battery pack
fault. Battery cannot
charge. Replace battery.
FLOW BLOCKED
message is displayed.
Inlet flow is blocked. Remove obstructions.
Check for pinched sample
tube. Check for correct
installation of impactor
inlet (if used).
Outlet flow is blocked. Remove obstructions from
outlet flow fitting (next to
connectors).
Internal screen filter
is plugged. Return to factory for
servicing, or replace
internal screen filter. See
“
AM520/AM520i Field
Service Kit
” section, in
Chapter 4, for more
information.