BRASSELER USA NL4500 Operation Manual page 7

4. Connection & Disconnection of the Handpiece (NL4500)
(1) Connection
1) Insert the handpiece into the coupling.(Fig. 2)
2) Make sure the handpiece is firmly connected to the coupling.
(2) Disconnection
Pull back the Retention Lock Ring and remove the handpiece
from the coupling.(Fig. 2)
Caution
• Do not operate the Retention Lock Ring while under drive air pressure. The
high pressure may cause sudden release of the handpiece from the coupling.
Retention Lock Ring
Handpiece Coupling
Fig. 2