Step 1 Verify that power is off to the DC circuit on the power supply you are removing. Turning the power switch off also disengages a pawl that unlocks the power supply from the chassis. Step 3 Remove the two screws securing the terminal block cover and slide the cover off the terminal block. When installing the unit, the ground connection must always be made first and disconnected last. DC-Input Wire Connections on the Terminal Block Step 5 Loosen the captive installation screw on the power supply.
Caution Use both hands to install and remove power supplies.
Step 6 Grasp the power supply handle with one hand and slide the power supply half way out of the chassis. Set the power supply aside. Installing a DC-Input Power Supply Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Step 2 Verify that power is off to the DC circuit on the power supply you are installing.