Contec CONPROSYS Alpha Series Reference Manual page 94

 How to Remove
1
First, slide the attached end cover from the configurable type module to remove it.
2
Unlock the hooks of the module.
If the hooks are stuck, use a slotted screwdriver to unlock.
Unlock the hooks with a slotted screwdriver
There are two ways to unlock the hooks using a slotted screwdriver.
Unlock them by one of the following methods.
Using the screwdriver as leverage

Insert a slotted screwdriver (the point should be smaller than 4.5mm) into a hole.
(see the figure below)
By using the screwdriver as leverage, move it downward in the direction of the arrow to unlock.
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Installation
CPSA-PCB100 Reference Manual
A projection tip to support the driver
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