![background image](http://html1.mh-extra.com/html/york/lvd-270/lvd-270_operation-manual_912297031.webp)
Figure 12: OptiSpeed system architecture (Model 1055 shown, similar to 868, 882, 914, 917,
and 948 models)
Callout
Description
1
Filter power unit
2
Service hole
3
SCR trigger board
4
Drive power unit
5
Filter input current transformer
In Figure 12, the drive and filter logic boards are mounted on the right door.
31
Liquid-Cooled OptiSpeed Compressor Speed Drive