Whip Mix P.D.Q., Operator'S Manual

Page: 16 / 24

16
Part numbers can be found on last page(s) of Manual .
1 . Remove the bottom panel .
2 . Note and record the color and location of each wire on the thermocouple
terminals located on the Main PC Board. Remove both wires .
3 . Tag or label the electrical connectors on the Main PC Board before removal
so that you know where to reconnect each one. Create a sketch showing the
locations and referencing the tag or labeling. Pull straight out on the connector .
DO NOT PULL ON THE WIRES .
4 . Remove the nuts and lock washers that hold the Main PC Board to the front panel and lift
straight away from the front panel to remove board .
5 . Align the holes in the new board with the standoffs on the front panel, reinstall the fasteners
and screws .
6 . Reconnect the electrical connectors by referring to the tags and your sketch .
7 . Reconnect the two thermocouple wires to the thermocouple terminals observing the color coding
noted in Step 2 . If thermocouple wires are reversed, 5 minutes after heating program is started,
"Er 5" will appear on the Main Display .
8 . Replace the bottom panel .
REPLACEMENT OF THE MAIN PC BOARD
FIELD SERVICE