Rice Lake EL232 XPCD Explosion Proof Remote Serial Display - Manual (Page 11)

Installation and Wiring 7
2.0 Installation and Wiring
This section is provided to help the installer and describes the procedures for installing the EL232 XPCD remote
display and enclosure, AC wiring, conduit runs, and internal modifications for the EL232 XPCD.
2.1 EL232 XPCD Enclosure
The following sections describe mounting locations and how to mount the enclosure and sealoff the fittings.
2.1.1 Mounting and Mounting Locations
The mounting and installation of an explosion proof enclosure is more involved than a general purpose unit and it
is recommended that all outdoor installations have a shelter, roof, enclosure, or covering. The EL232 XPCD
enclosure is cast aluminum and direct sunlight can cause it to heat to a very high temperature which can damage
the electronics inside. (Such damage is not covered by the warranty). Sheltering the unit from sunlight will help
control the internal temperature. In cold climates, it is recommended an indicator heater be installed (optional).
These are small and easily installed on the backplate.
Sunlight and variable temperatures can also cause moisture to condensate inside the enclosure. It is
recommended to shelter the outdoor installation by a shelter, roof, enclosure, or covering. Moist environments
can also be controlled by the use of desiccants. Contact your local dealer for information on desiccants.
Do not place desiccants on top of circuit boards. Place them in the bottom of the
enclosure away from electronics and wires.
The explosion proof enclosure is substantially heavier than a standard enclosure and thus the mounting surface
must be capable of reliably supporting the added weight.
The mounting and installation of the EL232 XPCD must be into Division II or safe electrical area per NEC,
Section 500. The inside of an explosion proof enclosure is classified as a Division II environment.
Glass Face
The glass face on the EL232 XPCD may look indestructible but it is not. If damaged in any way, the entire unit
must be completely turned off at the source until it is replaced. The enclosure must be protected from blows and
scrapes from passing equipment, falling objects, thick glues or resins, certain acids which eat aluminum, and
other hazards which can break or damage the enclosure.
The glass window in the enclosure must be not become scratched, pitted, or damaged in any way. Do not wipe
the glass with dirty gloves or rags as this can cause the glass to become scratched.
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Caution