PHOENIX Power Distribution Unit (ACGD and GRFD- OpenSpeed)

Prerequisites

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Lockout/Tog out Multiple locking device	1	-	46-194427P313	-
Brass Master Padlock	1	-	46-194427P230	-
Red warning tag	2	-	46-194427P322	-
Line cold plug cover	1	-	46-194427P231	-

Table 3. Safety

POSSIBLE SERIOUS INJURY OR DEATH
Electrical Shock Hazard
REMOVE POWER FROM THE RF/PDU CABINET BEFORE ATTEMPTING TO REMOVE ANY COMPONENTS FROM THE SYSTEM

Power Down the computer subsystems.
Remove the cover from the front of the ACGD cabinet, OR if you are working on an OpenSpeed HFO system remove the front cover of the GRFD to expose the front of the PDU. See Figure 1

Figure 1. BREAKER LOCATION- PHOENIX PDU
Power off the following two circuit breakers:
1. Operators Workspace PC
2. Operators Workspace Host
Rotate the larger main breaker labeled INPUT counter-clockwise to the green, OFF (O) position. See Illustration 8-7.

Figure 2. MAIN INPUT BREAKER IN THE OFF POSITION
Lock Out Tag Out the PDU “INPUT” circuit breaker.
Press on the left-pointing arrow on the end of the handle to expose the location where the lock and tag can be placed.
Lock and tag out the PDU “INPUT” circuit breaker as shown in Figure 3

Figure 3. PDU MAIN INPUT CIRCUIT BREAKER LOCKED AND TAGGED OUT

Remove the cover from the front of the ACGD or GRFD cabinet for the OpenSpeed system, to expose the front of the PDU.
Remove the Lock and the Tag from the PDU “INPUT” circuit breaker.
Rotate the larger main breaker labeled INPUT clockwise to the Red, 1 ONposition.
Flip the circuit breaker for the Operators Workspace PC, ON.
Flip the circuit breaker for the Operators Workspace Host, ON.
Power on any other appropriate circuit breakers, you may have turned off.
Boot Signa and log into scanning level