Changes

# Turn on the machine by '''pressing''' it on/off switch at the back.  

# Turn on the machine by '''pressing''' it on/off switch at the back.  

[[File:ON/OFF switch of the machine .png|thumb|ON/OFF switch of the machine|link=Special:FilePath/ON/OFF_switch_of_the_machine_.png]]

[[File:ON/OFF switch of the machine .png|center|ON/OFF switch of the machine]]

 

<div class="center" style="width: auto; margin-left: auto; margin-right: auto;">Figure 3. ON/OFF switch of the machine </div>

# Turn on the compressor by '''turning''' the blue valve on the wall near the sink.  

# Turn on the compressor by '''turning''' the blue valve on the wall near the sink.