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Symptom
Possible Causes
Symptom
Possible Causes
Symptom
Possible Causes
Symptom
Possible Causes
Symptom
Possible Causes
Symptom
Possible Causes
800.237.2303 ◆ 503.538.8756 ◆ 503.538.2845 Fax ◆ www.beaverstatedental.com
Handpiece lacks power.
A. Improper supply pressure from compressor (80 psi).
B. Check handpiece pressure adjustment on unit.
C. Air filter may be plugged.
D. Pinched supply tubing.
E. Defective handpiece gasket at connection with tubing.
F. Defective handpiece.
Water coolant does not shut off when foot control is released.
A. Adjust air pressure to 80 psi — water pressure to 40 psi.
B. Foot control is not exhausting.
C. Defective water relay valve.
More than one handpiece is operating.
A. Handpiece is not all the way in the holder.
B. Improper adjustment on pilot valve in the handpiece holder.
C. Defective shuttle valve to gauge.
Insufficient water coolant.
A. Adjust coolant flow valve.
B. Water filter may be plugged.
C. Handpiece may be plugged.
D. Pinched supply tubing.
E. Improper adjustment of water relay valve.
Water coolant is running from handpiece while in the holder.
A. Water pressure too high.
B. Air pressure too low.
C. Handpiece holder out of adjustment.
Water coolant is running continuously.
A. Purge switch is on (on applicable systems).
B. Water pressure to high.
C. Handpiece holder out of adjustment.
D. Defective water relay valve.
Troubleshooting
3
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