TSI Instruments DustTrak 8520 - Page 57

Maintenance
47
Symptom Possible Cause Corrective Action
Display
reads
“MEMORY
0%.”
Memory is full. Download memory to a PC if
desired, then clear memory.
“
SERVICE
”
and “1”
displayed.
Memory has been cleared
due to temporary loss of
power from internal
backup battery.
Factory service required if
condition persists. Press any
key to bypass.
“SERVICE”
and “2”
displayed.
Calibration memory error.
Internal calibration data
corrupted.
Factory service required.
“
SERVICE
”
and “3”
displayed.
Backup battery low.
Factory service required. Press
any key to bypass.
“
SERVICE
”
and “4”
displayed.
The sample inlet nozzle is
due for cleaning.
Clean the nozzle and sample
inlet port. Press any key to
bypass.
“
SERVICE
”
and “5”
displayed.
Internal filters are due for
replacement.
Replace internal filters and
reset service reminder. See
“Replacing the Internal Filters”
for more information.
“SERVICE”
and “6”
displayed.
Flow obstruction on
previous power up.
Internal pump failing,
indicated by inability to
adjust flow rate to full
range.
Remove obstruction if still
present. Press any key to
bypass.
If Service 6, recurs on each
power up even after bypassing,
factory service may be
required.