Maintenance / Repair
Replacing the glass insert or plastic insert
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Building Technologies
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Fire Safety
2016-08-23
7.4 Replacing the glass insert or plastic insert
Manual call point FDM221
The glass insert is numbered and covered by foil. This foil holds the glass splinters
together when the glass insert is pushed in, making it possible to remove the glass
insert easily.
Replace the glass insert as follows:
The housing cover of the manual call point is removed. See the chapter
1. Completely remove the old glass insert.
2. Position the new glass insert (2) so that the number is at the bottom and can be
read from the front.
3. Place the glass insert (2) onto the guides (3) and slide it against the alarm
actuator (4).
4. Push the retainer (5) to the right until the glass insert (2) is below it.
5. Install the housing cover on the back box (1).
6. Check the function of the manual call point. See the chapter 'Checking function
49]'.
The glass insert has been replaced.
Figure 27: Replacing the glass insert on manual call point FDM221
1 Back box
4 Alarm actuator
2 Glass insert
5 Retainer
3 Guides for the glass insert
6 Switching lever for test activation
To comply with EN54-11:
'Ensure the frangible element has been solidly mounted on the switching unit of
the MCP with no gap between the element and the switching unit when installing
the device or replacing the glass element'.
4
1
2
5
3
6
3
3
3
