Installation manual

Model DMA
™
8 Installation Manual Installation
2-3
WARNING: Before the following steps are performed, ensure that power to the
unit is disconnected.
1. Use a small flat-blade screwdriver to open the fuse compartment door in the AC
power input housing (Figure 2-2). Carefully pull out the fuse carrier.
2. Check that the fuse has the correct rating. The fuse carrier must be inserted into
the compartment with the orientation shown in Figure 2-2. Do not force the
carrier into the compartment or both could be damaged.
3. Snap the fuse compartment door closed.
Fuse carrier
Installed fuse
Open the door
Figure 2-2 Checking the Main Fuse
Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should be
protected by the main fuse.
If you find it necessary to replace the internal fuse, be certain to replace it with a fuse
of the same type and rating as printed on the switching power supply board.
Mains Power Wiring
In some countries the primary mains cable may not have a connector fitted. These
non-terminated leads must be properly wired to an approved mains connector in
accordance with the following international code:
Brown wire: Live or hot
Blue wire: Neutral
Green wire: Mains ground
WARNING: If you are uncertain about the wiring of your mains outlet then do
not use it. Consult a qualified electrician.