Labconco Type C1 Biosafety Cabinet Models 30468 - Manual (Page 36)

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The Axiom has three circuit boards. The ECM microprocessor and power
supply board, located in the end of the ECM, the control board on the right
side wall, shown in Figure 1-11, and the power supply board assembly,
located in the electronics module, as shown in Figure 1-12.
Figure 1-12
UV Relay
Light Relay
Outlet Relay
RS-232 Board
Location
The Axiom also has an optional contact/RS232 board. This must be installed
if the user wants to signal external building monitors or controllers, or wants
the Axiom to output operating information to a data logger. The optional
board is located in the electronics module.