Marco 1000830, Service Manual

Page: 26 / 42

SP9 ServiceManual.docx 06/02/2015 Page 26 of 42
Replacing the Main Control Board
If the main control board needs to be
replaced, note the position of all
connections and the DIP-switch
settings.
Remove power to the under counter
unit and remove all connections from
the main control board. Using a pillar
release tool (or a BIC biro with the refill
removed) release each pillar in turn
while applying slight pressure to the
back of the control board. Once all
pillars have been released, remove the
board completely.
Figure 15.
Before fitting the replacement main control board, ensure the DIP-switch settings correspond to
those of the original control board, as noted earlier.
Ensure all connections have been replaced in the correct positions before applying power to the
machine. The diagram on the previous page details all connection points on the main control
board.
Pump Replacement
To remove a pump, cut the retaining cable ties,
unplug the electrical connections and
remove the silicon hose from the outlet port on
the pump.
The pump is push-fit and is held in place by the
seal and the siphoning action of the pump.
Pull or pry the pump from the seal to remove.
Follow the instructions above in reverse to
replace the pump.
Figure 16.