1 2 Adjustments
55000-00011_002_01 – 1756789 – 2017-09-06
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Figure 37
12.5
Setting spring arm spring force type
AC 2000 and type AC 3000
The weight of the light head is compensated by a spring which
is installed in the spring arm. The spring force must be
adjusted when the spring arm with the light head does not
reliably stop at the height position selected after a swivel
movement.
12.5.1 Disconnecting the power to the lighting
system
Ceiling-mounted and wall-mounted versions
1. Switch off the operating theatre master switch.
→ The lighting system is disconnected from the power
supply.
2. Secure the master switch against accidental switch-on.
12.5.2 Adjusting the spring force
1. Place the spring arm in a position approx. +10° to the
horizontal in order to relieve the load on the adjustment
screw.
2. Turn the M5 threaded pin with Allen key ② (5 mm) in
adjustment hole ①.
Reducing the spring force
• Turn the adjustment screw to the left (anti-clockwise).
Increasing the spring force
• Turn the adjustment screw to the right (clockwise).
3. Carry out a function test of the spring force.
