Hitachi CMU Series User Manual page 47

3 MOUNTING AND WIRING
Dust or other foreign matter might accumulate on the connector, resulting in
poor contact. Immediately after the module is unpacked, perform the
mounting and wiring procedures.
To prevent the module from being damaged, observe the following precautions
when you mount or demount the module:
• Before mounting the module to the mount base connector, check that the
connector pins are properly aligned and not bent, broken, or soiled with dirt
or the like.
• Ensure that the module is parallel to the mount base vertical surface as
shown below when mounting. If you connect a module to or disconnect it
from its connector while it is tilted, the connector pins may become damaged.
• If the mount base is positioned overhead due to the employed enclosure
structure, use a stepladder or the like and mount the module squarely. If
you mount the module obliquely, the connector may become damaged.
Mount base
Observe the installation procedure stated in the manual.
If the module is improperly installed, it may drop, become defective, or
malfunction.
Do not allow wire cuttings or other foreign matter to enter the module.
The entry of foreign matter in the module may result in a fire or cause the
module to become defective or malfunction.
Before installing the module, discharge any static buildup from your body
because static electricity may render the module defective.
Properly tighten the screws. If they are inadequately tightened, malfunction,
smoke emission, or combustion may occur.
NOTICE
[Bad example]
Module
CAUTION
3-4
[Good example]