System Two LED Installation and Service Manual (1003385 Rev. C)
Page 62
Section 6
Checking the securing segment on the Spring Arm - L21/MD21
Figure 40: Adjusting the L17/MD21 Spring Arm
Checking the securing segment on the Spring Arm
L21/MD21
The 2 securing segments for each Spring Arm 5 must
be checked for minimum strength, lubricated with white
grease and replaced if the minimum strength is not
achieved.
Identify the version of the Spring Arm [5] mounted
according to the information on the rating plate.
You can identify your Spring Arm L21 mounted by the
TYPE designation: L21.
You can identify your Spring Arm MD21 mounted by
the TYPE designation: MD21.
The rating plate is attached to the top side of the Spring
Arm [5].
Adjusting the Spring Arm to the lowermost horizontal
(0°) end stop position
Follow the safety instructions on Page 56.
*** Warning ***
*** Risk of Light Head dropping ***
The Light Head is kept in its position in the Spring
Arm by 2 securing segments. If the 2 securing
segments are dismantled simultaneously, there is a
risk of the Light Head or Monitor sliding out of the
Spring Arm. In this case the Spring Arm suddenly
jumps up and can cause severe injury;
Before checking the securing segments set the
Spring Arm to its lowermost horizontal (0°) end stop
position.
1. Set the Spring Arm [5] to its lowermost horizontal
(0°) end stop position.
To do this, dismantle the cover panels from the
Spring Arm and remount them after checking the
securing segments.
2. Check that the Spring Arm is safely locked in place;
Once the Spring Arm has been fixed in its lowermost
horizontal position, it must no longer be possible to
move the Spring Arm upwards