B. Braun microspeed uni Instructions For Use Manual page 21

Connecting micro-Line handpieces to low-speed motors GD678 and
GD679
A
Fig. 15
Legend
A Handpiece
B Catch
C Centering lug
32 Motor
To couple handpiece A:
Install handpiece A on centering lug C.
Handpiece A engages in its proper position.
Pull at motor 32 to check that the handpiece is securely coupled.
To uncouple handpiece A:
press catch B and remove handpiece A.
B 32
C
Connecting Hi-Line handpieces to high-speed motors GD676 and
GD677
A B C
Fig. 16
Legend
A Handpiece
B Threaded ring
C Recess
D Lugs
32 Motor
Symbol "Handpiece release"
Symbol "Handpiece locking"
Handpiece A can be coupled to motor 32 in different positions.
Coupling:
To release handpiece A: Turn threaded ring B in the direction indicated
by the arrow in symbol "Handpiece release" as far as it will go.
To couple handpiece A: Install handpiece A at the desired position on
motor 32, making certain that lugs D of motor 32 engage in recesses C
at handpiece A.
Lock handpiece A: Turn threaded ring B in the direction indicated by
the arrow in symbol "Handpiece locking" as far as it will go (to prevent
loosening of the handpiece due to vibrations during operation).
Uncoupling:
To uncouple the handpiece: Turn threaded ring B in the direction
indicated by the arrow in symbol "Handpiece release" as far as it will
go and detach handpiece A.
D 32
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