122770 06
18-09-2007
25
Error:
Calibrator does not cool or heat sufficiently or
is slower than specified (ATC-125 only).
Error message:
-
Likely cause:
Solution:
Set the calibrator to –90°C
Check voltages on test pins:
Between GND and 24V >23V
Between GND and TC_Well 1,4V+(6.20 mV/°C x T)
Between GND and PWM >1V and <2V
Between GND and TC_SMH 0,8V+(6.20 mV/°C x T)
Between GND and SAFE >4,5V
Defective Power PCB
Set the SET temperature to 125°C. On the
Power PCB measure the voltage between
test pin 24V and GND.
If the voltage is less than 23V, pull out
CN103 and re-measure. If the voltage still is
too low, check fuse F3 on Power PCB, else
replace Power PCB.
If pulling out CN103 re-establishes the 24V,
the Stirling Controller PCB is defect.
Defect safety
thermocouples
If “Safe” is low, check “TC_Well” or
“TC_SMH”. If defective replace the sensor.
Broken ribbon cable
If the PWM signal is missing, the 34-poled
ribbon cable between Main Board and
Power Board is broken or the Main Board is
defect.
Содержание JOFRA ATC-125
Страница 2: ...2 18 09 2007 122770 06 ...
Страница 74: ...74 18 09 2007 122770 06 3 3 Exploded View ATC 140 A B 0 35 1 JRL 03 01 2005 A3 ...
Страница 75: ...122770 06 18 09 2007 75 3 4 Exploded View ATC 155 A B ...
Страница 76: ...76 18 09 2007 122770 06 3 5 Exploded View ATC 156 A B ...
Страница 77: ...122770 06 18 09 2007 77 3 6 Exploded View ATC 157 A B ...
Страница 79: ...122770 06 18 09 2007 79 3 8 Exploded View ATC 320 650 A B ...