
System Two LED Installation and Service Manual (1003385 Rev. C)
Page 33
Section 4
Preparing the MD21 Spring Arm
Figure 10: Mounting external cables
The Figure shows simplified illustrations which
explain how to lay external cables
②
in the MD21
Spring Arm [3] (the joint securing device on the
front joint is not shown). The steps for installing
the Spring Arm are identical for the MD21 and the
MD21+.
Marking the cable clips
1. Permanently mark the position
③
of the cable clips
④
on the parallel guide
①
;
The parallel guide of the Spring Arm starts at the
reference edge for the dimensioned distances to
the cable clips
④
.
If the 3 cable clips
④
are not mounted back to their
previous positions, the side panels are pushed on
and no longer flush with each other.
2. Disengage the 3 cable clips
④
laterally from the
parallel guide using a suitable screwdriver and
remove them.
Mounting Cables
1. Adjust the vertical lift of the Spring Arm to the
lowermost horizontal (0°).
*** Warning ***
Electrical Shock Hazard
If the external cables
②
are not laid next to each other
and without twisting or if the external cables
②
are
damaged, the Arm System is energized. Contact with
energized components presents a danger to life from
electrical shock.
Make sure that you lay the external cables
②
next
to each other and without twisting
Do not damage the cable insulations.
*** Warning ***
Damaged external cables
②
can energize the Arm
System.
Check all external cables
②
for damage. Make
sure you insert them with great care without
cables/tubes crossing each other without loops and
without twisting.
Do not damage the cable insulation
2. Route the external cables
②
towards the parallel
guide
①
at the bottom of the Spring Arm and then
route them through the Spring Arm next to each
other and without twisting as illustrated n the
Figure.
To do this, make sure that you centrally lay the
external cable with the largest cross section as
illustrated in the Figure.