Proface PS4800 - 19 Panel PC" - Manual (Page 158)

Hardware Modifications
158
Removing Fan Kit
The table below describes how to remove a fan kit:
4 Align the fan kit parallel to the Industrial Personal Computer and press it in until
it latches. Make sure the fan kit is inserted so that the connections match-up:
Step Action
Step Action
1 Disconnect the power supply to the Industrial Personal Computer.
2 Touch the housing or ground connection (not the power supply) to discharge
any electrostatic charge from your body.
3 Press in the marked latching mechanism as you pull out the fan kit.