SX
™
Service and Maintenance Manual 3-28 960714-02B © 2007 I2407
SECTION 3 – COMPONENT REPAIR
ELECTRICAL COMPONENTS
AROMAT PLC BATTERY
The Aromat PLC battery is a 1.5 VDC “Button”
battery. It is used by the PLC to retain user
settings. The average lifetime of the PLC battery is
two years. It is suggested that you replace the
battery annually.
Note: Not all machines are equipped with a PLC
Battery. If no battery is present in your PLC, you
do not have to install one.
There are no testing procedures to be performed
on the Aromat PLC battery.
There are no adjustments necessary on the Aromat
PLC battery.
1. Remove the six Frame Cover screws (Figure 3-
76).
2. Remove Frame Cover and set aside.
3. Disconnect the touch screen communications
cable and the power wiring connector (Figure 3-
77).
4. Using a small flat screwdriver, pull the blue DIN
rail release tab toward you and pivot the PLC up
and back (Figure 3-78).
5. Remove the PLC from the DIN Rail.
REPLACEMENT
ADJUSTMENT
TESTING
Figure 3-76. Frame Cover Screws
Figure 3-78. Removing PLC
Figure 3-77. PLC Connections
Always remove electrical power from the
SX
prior to performing any maintenance
on the machine.
WARNING