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8.
Troubleshooting
The following table is intended to assist in communicating with your nearest authorized
Welch Allyn / Kreativ service representative.
Troubleshooting Tips
PROBLEM
"Lo Air" message
momentary warning
displays on Mach 5.0
"Lo Air" momentary
message displays on the
Mach 5.0 PLUS
No Power
No powder flow when
footswitch is activated
POSSIBLE CAUSE
• Air supply drops below the
selected setting during
operation
• Handpiece is removed
• Nozzle is removed from the
handpiece
• The compressor intake plug
is still installed from shipping
• Instrument not plugged in
• Main Switch OFF
• Blown Fuse
• Main Switch Bad
• Remote Not connected
• Blown Circuit Breaker
• Footswitch not plugged in
• Particle Energy not selected
• Handpiece/nozzle clogged
• Handpiece inoperable
Page 28
Chapter
8
REMEDY
• Reduce the setting or
increase the supply or
wait for additional
supply capacity
• Install handpiece
• Install the nozzle on the
handpiece
• Remove the plug and
install the pre-filter
• Check Plug
• Check Switch
• Change Fuse with
specified fuse
• Call local service rep.
• Check Connection
• Check Facility Power
Box
• Check connection
• Check LED display
• Check for clog
• Check micro-switch
on top of control
990008 Rev. H
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