TSI IAQ50 - Manual (Page 26)

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printer, please refer to the operation and
service manual for the printer to properly
set the printer’s DIP switch settings. If the
printer prints question marks (??????),
asterisks (******), or random characters,
reset it by turning it off and then on again.
If necessary, refer to the Owner’s Manual
for the MicroPrinter.
SECTION 5
Maintenance
Probe Tip
Periodically inspect the probe tip to ensure
that it is clean. Dust and oil deposits on the
sensor may affect the response time of the
Model IAQ50. To remove dust, blow it off
with a gentle stream of air.
Caution:
To avoid possible irreparable damage, do
not use liquid to clean the probe or probe
tip.