Elgar CW 1251M, Operation Manual, Page: 23 / 48

Elgar CW-M Series
3.3 Mounting Instructions
Refer to Figure 3–1 through Figure 3–4 for mounting dimensions and other installation
information for the CW Series power supplies.
The units are equipped with mounting feet for bench top use. They are mounted to the
chassis with pem-nuts and may be removed easily for rack mount application.
The units are 3.5" and 5.25" (89 mm and 133 mm) high, and are designed to be
installed in a standard 19" (483 mm) RETMA rack. Pem-nuts have been built into the
chassis for mounting optional slides. The CW mounting kit, Elgar part number
K161570-01, contains the appropriate slides and mounting brackets.
If you elect not to use slides, mount the unit with standard support angles to sustain the
weight of the unit in the rack. Note that the front panel mounting ears are not intended to
support its weight in rack mounting.
For installations that include slides, use a #10 lock washer with each of the two
mounting screws indicated in Figure 3–1. The washers are required on the right side
only.
Figure 3–1 Slide Mounting
3.4 Cooling
The CW unit employs internal fans to circulate cooling air. The air is drawn into the
chassis along its sides, and is exhausted through the rear panel. For maximum product
life and reliability, do not allow the airflow to be impeded.
CAUTION!
Avoid blocking the instrument air
intakes or exhaust.
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