16-4 System Maintenance 
 
  Cleaning the main panel 
z  Tools: soft dry cloth, soapy water 
z  Method:  
Use a soft dry cloth to clean the surface of the control panel (including the 
keystrokes, encoders and sliders). If the control panel is dirty, moisten the soft cloth 
with a little mild soapy water and wipe away any stains. Use another soft dry cloth to 
remove any moisture and allow all hard surfaces to completely air dry. If the control 
panel is difficult to clean, disassemble the encoder caps first and then clean it with 
mild soapy water. 
NOTE:  The keyboard on the control panel should be cleaned periodically, otherwise the 
keys may become blocked with dirt and when the buzzer rings the keys will not 
work. 
  Cleaning the cover 
z  Tools: soft dry cloth, soapy water 
z  Method:  
Use a soft dry cloth to clean the system's cover. If the system is dirty, moisten the 
soft cloth with mild soapy water, wipe away any stains, then air dry.   
  Clean dust-proof covers 
z  Tool: Soft brush 
z  Method:  
1)  Disassemble dust-proof cover before cleaning. 
System dust-proof cover: Grab the lower side of the dust net frame, and then pull out 
the net. 
 
Probe port dust-proof cover: there is a probe port dust-proof cover at the front of the 
system, Pull it out. 
2)  Cleaning: with soft brush and then wipe off the dust. 
3)  Assemble dust-proof covers. 
Input the dust-proof clasp into the slot of the main unit, push the dust-proof inward 
until the dust-proof clasp is blocked in the slot. 
Dust-proof 
Main unit