Replacing a Front Air Filter Element on a T640 AC or DC Power Supply

You can use this procedure for a two-input 160-A DC power supply, three-input 240-A DC power supply, four-input 240-A DC power supply, three-phase delta AC power supply, or three-phase wye AC power supply.

1. Removing a Front Air Filter Element on a T640 AC or DC Power Supply
2. Installing a Front Air Filter Element on a T640 AC or DC Power Supply

Removing a Front Air Filter Element on a T640 AC or DC Power Supply

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Grasp the filter cover on the power supply faceplate and pull it straight off the power supply.
3. Remove the front air filter element.

Figure 1: Removing a Front Air Filter Element

Installing a Front Air Filter Element on a T640 AC or DC Power Supply

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Install a new filter element.
3. Press the filter cover straight onto the power supply faceplate until all four sides click into place.

Figure 2: Installing a Front Air Filter Element