Instruction Manual TProfessional Basic 06/2011 63
To unlock wheel, press down metal pin with a ball pen and turn wheel carefully. This pin
overrides the automatic clutch mechanism. Thus, care must be taken not to apply excessive
pressure.
Release lid in upper position:
1) press pin
2) carefully turn wheel while holding
the pin down CLOCKWISE, until you
feel normal resistance (no more
clicking noise, clutch is released).
Release pin and turn lid down, until
the clutch mechanism is activated
(clicking noise, optimum pressure
applied).
Release lid in down position:
1) press pin
2) carefully turn wheel while holding
the pin down COUNTER
CLOCKWISE, until you feel normal
resistance (no more clicking noise,
clutch is released). Release pin and
turn wheel counter clockwise until
pressure is completely released.
Open lid.
Important: When the clutch mechanism is active (= optimum pressure is applied), do not use pin
to further increase lid pressure. This would lead to damage of tubes and instrument!
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