VICOR MicroPAC Specifications download pdf (Page 12)

vicorpower.com Applications Engineering: 800 927.9474 Page 9

Field Replacement Unit Instructions.

> Remove input power connector.

(this should never be attempted with the input power cable inserted)

> Remove output power connections

> Remove four screws, from the back panel (ref 1) two either side (ref; 2)

> Remove back panel (ref 1)

> Pull back the insulating material to gain access to the fan connector (ref 7)

> Depress the latching point on the fan connector (ref 7)

> The connector is polarized and removes vertically from the PCB housing

> Remove four screws (ref 4). The fan guard and fan are now free from the back panel.

> Insert new fan, making sure the arrow (ref 3) is pointed in the direction shown.

(Towards the inside of the MicroPAC)

> Replace fan guard in the correct orientation (ref 5)

> Replace 4 screws (ref 4). The torque on these screw should be 5-6 inch-lb. (Friction tight)

> Insert fan connector (ref 7) into the fan housing.

When inserted correctly you will not be able to remove without depressing the latch

> Fold the insulating material back

> Replace the back panel (ref 1) making sure the fan wire is routed to the side of the fan.

> Replace the four screws (ref 2). The torque on these screw is 5-6 inch-lb

> Never apply power to the MicroPAC until all of the reassembly is complete.

Estimated replacement time 15 minutes

Figure 5:

Fan Assembly

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VICOR MicroPAC Specifications Page 12