Power Supplies - Dell EMC PowerEdge R620 Owner's Manual

WARNING: The heat sink and processor are too hot to touch for some time after the system has been powered down. Allow
the heat sink and processor to cool down before handling them.
CAUTION: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is
necessary to maintain proper thermal conditions.
5 Remove the heat sink/heat-sink blank and processor/processor blank, as applicable.
NOTE: The procedure to remove the heat-sink blank or processor blank is similar to removing a heat-sink or processor.
6 Unpack the new processor.
7 Align the processor with the socket keys on the ZIF socket.
CAUTION: Positioning the processor incorrectly can permanently damage the system board or the processor. Be careful not
to bend the pins in the socket.
CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the
socket.
8 With the release levers on the processor socket in the open position, align pin 1 of the processor, using pin 1 position guide on the
socket, as reference and set the processor lightly in the socket.
9 Close the processor shield.
10 Rotate the socket-release lever near the lock icon
11 Similarly, rotate the socket-release lever near the unlock icon
12 Using a clean lint-free cloth, remove the thermal grease from the heat sink.
CAUTION: Applying too much thermal grease can result in excess grease coming in contact with and contaminating the
processor socket.
13 Open the grease applicator included with your processor kit and apply all of the thermal grease in the applicator to the center of the
topside of the new processor.
14 Place the heat sink on the processor.
15 Using a #2 Phillips screwdriver, tighten the heat-sink retention sockets.
16 Install the cooling shroud.
17 Close the system.
18 Reconnect your system and peripherals to their electrical outlets, and turn on the system.
19 Press <F2> to enter the System Setup and check that the processor information matches the new system configuration.
20 Run the system diagnostics to verify that the new processor operates correctly.

Power supplies

Your system supports either:
• Two 495 W, 750 W, or 1100 W AC power supply modules, or
• Two 750 W or 1100 W DC power supply modules
NOTE: Titanium power supply is nominally rated for 200 VAC to 240 VAC input only.
When two identical power supplies are installed, the power supply configuration is redundant (1 + 1). In redundant mode, power is supplied
to the system equally from both power supplies to maximize efficiency.
When only one power supply is installed, the power supply configuration is non-redundant (1 + 0). Power is supplied to the system only by
the single power supply.
NOTE: If two power supplies are used, they must be of the same type and have the same maximum output power.
CAUTION: When installing 1100 W AC or DC PSU, you must install both the PSUs. Your system does not support only one 1100
W AC or DC PSU.
72 Installing and removing system components
until it is locked in position.
until it is locked in position.