Installing The Printed Circuit Board (Pcb) - Kidde ARIES Installation, Operation And Maintenance Manual

3. Locate the 3 x 10 mm mounting screw in the installation kit and thread it part way into the
lower of the two threaded holes of the power supply unit. See Figure 2-4.
4. Ensure that the power supply unit AC-input-voltage selector switch is set to the proper
position for either 120 Vac or 220/240 Vac. See Figure 2-5.
5. Locate the two power-supply-unit retention tabs and the fastening tab in the
enclosure's back panel.
6. Position the power-supply unit with the wire harness down, and then slide it onto the retention
tabs. The 3 x 10 mm mounting screw should slide into the slot of the fastening tab at the same
time.
7. Tighten the screw onto the fastening tab.
8. Connect the ring end of the power supply's green ground wire to the lower earth-ground
stud on the left side of the enclosure.
2-6

INSTALLING THE PRINTED CIRCUIT BOARD (PCB)

Use a ground strap to prevent static discharge that could damage sensitive
components on the main PCB.
CAUTION
Refer to Figure 2-6 before you unpack and install the PCB within the enclosure.
Note: Make sure the control unit location is dry and that the enclosure is free of construction
dust and metal shavings prior to installing the PCB.
P/N 06-236530-001
230 V
115 V
Figure 2-5. Primary Power Selection Switch
2-9 August 2013