Rockwell Automation 6158 Industrial 21 inch CRT Monitors - Manual (Page 7)

Industrial 21" CRT Monitor 7
Publication 6158-5.0
Environmental Considerations
The 6158 Industrial Monitor requires a minimum free air space of 76.2
mm (3 in.) behind and 50.8 mm (2 in.) above and below for proper
cooling. Allen-Bradley Industrial Monitors have been designed to
function without cooling fans. Therefore, maintenance of fan filters and
access to them need not be a concern.
Strong magnetic fields near the front of the monitor outside the enclosure
could potentially distort the image over time. This type of image
distortion generally disappears after degaussing occurs. Allen-Bradley
industrial monitors automatically degauss each time AC power is
applied, or when the degauss button is pressed.
Note: The internal degauss will not prevent color impurities
caused by local magnetic fields. Make certain the monitor’s
enclosure is free of residual magnetism.
Installation Instructions
The 6158 Industrial Monitor has a 9U panel height and is designed to
meet NEMA 4 and NEMA 12 standards when properly installed.
The panel on which you mount the monitor should be at least 14 gauge
to insure a NEMA 4 seal and proper support for the unit. The mounting
studs attached to the rear of the monitor bezel will accommodate this
minimum thickness panel and panels up to 6.35 mm (0.25 in.) thick.
The monitor may also be bolted to the front rails of EIA standard 19 in.
rack cabinets.
To install the 6158 Industrial Monitor:
1. Confirm that the shipping carton contains a package of 20 10–32
lock nuts and 20 flat washers. You will need 18 nuts and washers for
installation.
2. Refer to the physical dimension drawings (Figure 1) and confirm
that there is adequate space behind the panel. Remember to allow
extra space for air circulation.
3. Refer to the panel cutout drawing (Figure 2) for dimensions of the
panel cutout and mounting hole locations. Cut and drill the panel.
4. Carefully remove the monitor from its packaging. Avoid damaging
the monitor gasket.
Installing the 6158
Industrial Monitor