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BTS3900L (Ver.C)
Installation Guide
2.
3.
4.
5.
Step 4 Tightly press the DCDU against the wall with the front panel facing the right and the power port
facing downwards. Then use a torque wrench to tighten the four M6x60 screws on the wall-
mounting ears for the DCDU to 5 N·m (44.25 lbf·in.), as shown in the following figure.
Figure 10-12 Installing the DCDU
Issue 07 (2013-11-08)
CAUTION
Take proper safety measures to protect your eyes and respiratory tract against the dust
before drilling holes.
Use a vacuum cleaner to clear the dust out from inside and around the holes, and measure
the distances between holes. If any of the hole is beyond the acceptable range, mark a new
anchor point and drill a new hole.
Tighten an expansion bolt slightly and place it vertically into each hole.
Use a rubber mallet to pound the expansion bolt assembly until it goes into the hole
completely. The expansion bolt must protrude 20 mm (0.79 in.) from the wall.
Remove the M6x60 bolt, nut, spring washer, and flat washer in sequence.
NOTICE
After dismantling an expansion bolt assembly, ensure that the top of the expansion tube is
level with the wall. Otherwise, the DCDU cannot be installed on the wall evenly and
securely.
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10 (Optional) Installing the Modules
54
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