TSI Instruments IAQ-CALC 7525, Руководство пользователя

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11
Chapter 5
Troubleshooting
Table 5-1 lists the symptoms, possible causes, and recommended solutions
for common problems encountered with the Model 7525. If your symptom is
not listed, or if none of the solutions solves your problem, please contact
TSI.
Table 5-1: Troubleshooting the Model 7525
Symptom Possible Causes Corrective Action
No Display Unit not turned on Switch unit on.
Low or dead batteries Replace batteries or plug
in AC adapter.
Dirty battery contacts Clean the battery
contacts.
Humidity reading
near zero or not
believable Probe exposed to intense
light Shade the probe while
taking samples.
High CO
2
levels Breathing on probe Shield probe from breath
and allow instrument to
re-stabilize.
No response to
keypad Keypad locked out Unlock keypad by
pressing
ST
keys
simultaneously.
Instrument Error
message appears Memory is full Download data if desired,
then DELETE ALL
memory.
Fault in instrument Factory service required
on instrument.
WARNING
!
Remove the probe from excessive temperature immediately:
excessive heat can damage the sensor. Operating temperature limits
can be found in
Appendix A, Specifications .
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