Chapter 8 – Maintenance
Page 8-10
TestEquity 123C Temperature Chamber
SYMPTOM
CONDITION
CAUSES
Temperature readout on F4
Controller varies more than
±0.5°C or 1°C total.
1.
If tuning PID control parameters
in temperature controller were
changed.
2.
If tuning PID control parameters
in temperature controller are as
shipped from TestEquity.
3.
If tuning PID control parameters
in temperature controller are as
shipped from TestEquity and
only occurs in cool mode.
1.
Re-enter values as documented
in the controller manual.
NEVER use the Autotune
feature.
2.
Control parameters may need to
be changed for your unique test
conditions.
3.
Solenoid valve SV1 may be
defective.
Compressors turn on and off
too frequently.
1.
If compressor control
parameters in temperature
controller were changed.
2.
If compressor control
parameters in temperature
controller are as documented in
the temperature controller
manual.
1.
Re-enter values as documented
in the temperature controller
manual.
2.
Solenoid valve SV1 may be
defective, causing undershoots
in chamber temperature.
Содержание 123C
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Страница 43: ...Chapter 10 Drawings TestEquity 123C Temperature Chamber Page 10 1 Chapter 10 Drawings...
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Страница 45: ...Electrical Subpanel Component Location...