Dwyer 1600 - Manual (Page 7)

Rev. 2/99 7 4309-0700-2
Caution: The components in the control are suseptable
to damage from ESD, electrostatic discharge. Take ap-
propriate action to avoid exposure to ESD. Controls
damaged by ESD are not covered by warranty.
12. Remove the control chassis from the housing. Using Figure E care-
fully solder a small jumper wire across the RJC sensor on the A/D
printed cirsuit board. Allow the board to fully cool before proceding.
Figure E. RJC sensor and jumper location for 1600 Series
R13
RJC Sensor
(may be leaded bead or
surface mount part) Jumper Across
Component
13. Return to the calibration mode using steps 3, 4, and 5. Press the UP
ARROW key so the lower display reads CAL2. Wait for the reading in
the upper display to stablize.
14. Press the UP ARROW key until the lower display reads CAL7. Refer
to Table 1 for the appropriate input value for the Group you are calibrat-
ing. Read the value in the upper display. Refer to Table 1 for the range
of values appropriate for the Group you are calibrating.
If the displayed value is out of range, the control can not be calibrated
and must be returned to the Factory for service.
If the value is within the specified range, press and hold the ENTER
key and the DOWN ARROW key. (Press the ENTER key first.) The
display will blink to acknowledge the entry.
15. Carefully remove the jumper installed in step 12. Allow time for the
RJC to return to ambient temperature. Return to the calibration mode
using steps 3, 4, and 5. Press the UP ARROW key so the lower dis-