Carmanah R247-G Podręcznik - Strona 9

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3.3

Legacy SC315 – Arch AC-DC Power Supply Replacement

Circuit

breaker

1. Access the inside of the power cabinet and switch the circuit breaker to the off position. It is also

recommended to disconnect the AC power source coming into the cabinet if possible.

2. Remove input and output wiring from the existing power supply and set aside to reuse.

3. Remove the two mounting screws and set aside, these will not be reused. Remove existing AC-DC power

supply.

4. The new power supply is smaller than the previous version, so the existing threaded PEM nuts will not be

able to be reused – new mounting holes must be drilled.

a. Drill two new holes in the mounting plate, using a #30 drill bit, to attach the new power supply and

use the provided 2x #4-40 screws and nuts to secure it in place. Do not drill through the rear of

the cabinet. Note the orientation of the power supply with the DC output facing up in the cabinet.

Either set of diagonal mounting holes may be used.

5. Reinstall the input (AC) and output (DC) wiring harnesses removed from step 2. Ensure the AC wiring is

terminated at the terminals labelled as AC/N (white wire) and AC/L (black wire).

6. Reconnect the AC power source and switch the circuit breaker to the on position in the cabinet. Once the

Energy Management System (EMS) has powered up you can test the system with the input method

installed, which typically would be a pedestrian push button for this system type.

Carmanah Technologies Corp. | 250 Bay St, Victoria, BC V9A 3K5, Canada | 1.250.380.0052 |

AC-DC POWER SUPPLY REPLACEMENT GUIDE

DC output

AC-DC power

supply

AC input

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