122770 06
18-09-2007
29
Supply for fan
Check the voltage on the fan connector on
Power PCB:
On PCB with date older than 2004 (see
copper print)
ATC-155/156/157: CN7
ATC-320/650: CN6
On PCB with date from 2004 and newer
(see copper print on PCB e.g. 040422)
ATC-125/140/155/156/157: CN10
ATC-250/320/650: CN10
Note: The fan can run in up to 3 modes:
Idle mode, when the well is heating. U
min
=
7,0V
Medium speed . U
min
= 16,5V (ATC-156/157
only) (17,5V (ATC-125)).
Full speed when the calibrator is cooling
down. U
min
= 21,8V) (24V (ATC-125)).
•
If supply voltages are above the minimum
limits, replace fan.
•
If supply voltages are lower than the limits
replace and adjust Power PCB.
Error:
The READ temperature in the display is
displayed as -.--
°
Error message:
-
Likely cause:
Solution:
The measured
temperature is out of
range
Check the ribbon cable connection between
Input PCB and Main PCB.
Check RTD sensor.
Disconnect the sensor from the Input PCB.
At 23°C in the well the impedance should
be 109
Ω
±3
Ω
.
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 ...