User Manual R7
Operation instruction
20
20
8. Malfunction removal
Malfunction Description
Malfunction Causes
Removal methods
1.Powerless handpiece
1.Bad bur
Contact the handpiece seller
2.Bearing fault
3.Low driving pressure
Check the air pressure
2.Powerless saliva ejector
1.Air or water pressure not high
enough
Raise the air or water pressure
2.Joint part not sealed well
Exchange the seal ring
3.Leaking water from the tap to
cup or the one for flushing
spittoon
3.Magnetic valve gets blocked
Clean the Magnetic valve core
4.Driving air pressure not
stable
1.Filter gets blocked
Clean the filter
2.The tube gets twisted
Stretch the tube
3.Air supply not open
Open the air supply
5.No water mist gets out
from handpiece
1.Water supply gets blocked
Contact handpiece seller
2.The water control knob get
wrong ways
Refer to user manual
6.Handpiece water control fail
Valve for controlling water
break down
Refer to user manual
7.Handpiece spouts out water
and bubble
1.Shim of handpiece breaks
down
Contact handpiece seller
2.Handpiece tube gets broken
Examine and exchange
8.Handpiece sprays badly
1.Handpiece spray nozzle gets
blocked
Contact handpiece seller
2.The water control knob get
wrong ways
Turn control knob to right level
9.Leaking water at the joint
part of handpiece
1.Shim of high speed handpiece
breaks down
Contact handpiece seller
2.Too much water in the air
filter
Empty the filter every day
10.No water spout out from
3-way syringe
1.Its water tube gets blocked
Block the spray nozzle,and
press water and air control
button
2.The water control knob gets
the wrong ways
Adjust the control knob again
11.Air mingled with water gets out
while 3-way
syringe spurts air
1.Too much water in the air filter
Empty water in time, examine to
exchange bad parts, or install again
2.Get something wrong with air
valve core
3.Wrong installation of spray nozzle