4)
Wiring the controller correctly is a very critical step. Failure to install it correctly can cause
damage to the machine and electric shock. The terminal numbers are printed on labels
located on both sides of the controller. The brown colored power cable needs to be
connected to terminal 1. The black colored power cable needs to be connected to terminal 2.
Connect the brew pump control jumper cable between terminal 2 and 4. The green colored
brew pump control cable needs to be connected to terminal 5. Both red colored cables from
SSR are connected to terminal 10. The white colored cable for SSR input is connected to
terminal 9. The blue colored steam control cable connects to terminal 3. The clear RTD
cables need to be connected to terminal 7 and 8. The white colored RTD jumper cable needs
to be connected to terminal 6 and 7. Please refer to Table 1 and Figure 27a for details
Table 1. Wiring to the controller
Color code of wire
Terminal
Brown power cable
1
Black power cable
2
Black jumper cable
2 & 4
Blue steam control cable
3
Green (brew pump control cable)
5
White RTD jumper cable
6 & 7
Clear RTD cables
7 & 8
White SSR input cable
9
Red cables from SSR
10
Bending the wire tip will make the insertion of the cable easier as shown in Figure 27b. In
order to prevent the cables from coming loose when pulling on them during box installation,
make sure all cables are securely tightened by a screw driver. Also, make sure there are no
small wires touching the other terminals, causing a short circuit.
.
Figure 27a. Detailed view.
19
