24431
Rev. A
10/12
http: www.networketi.com
Environmental Technology, Inc.
85 of 94
Automatic Air Dehydrator
ADH
®
SIROCCO™
Instruction Manual
APPENDIX A – ADH SIROCCO AC NEMA CONFIGURATION
DESCRIPTION
The ADH Sirocco AC NEMA automatic air dehydrator provides the same
functionality as the standard ADH Sirocco AC automatic air dehydrator, housed
in an environmentally sheltered polypropylene, IP66, NEMA 4X enclosure.
Because of the NEMA enclosure, the unit can be mounted outside which not only
saves interior shelf space but also protects the unit from harmful environmental
factors. While the NEMA enclosure keeps out moisture, the temperature control
system allows operation down to -40°F (-40°C). Refer to Figures 1 and 2 below
for views of internal components and dimensions.
Power requirements for the ADH Sirocco standard and AC NEMA versions are
the same: 100 to 240VAC or +/-20 to 75VDC, 50 / 60Hz, and 1.5 Amps at 100V.
Each voltage range is auto-sensing and requires no special configuration. The
temperature control system in the NEMA unit allows reliable operation from -40
o
F
(-40
o
C) to 130
o
F (55
o
C), with a storage temperature range from -40
o
F (-40
o
C) to
150
o
F (60
o
C).
The NEMA enclosure has a dedicated temperature and humidity control system
to enable outdoor operation. To save energy, small heaters are mounted near
the pump to allow normal operation at temperatures below 40
o
F, while excess
heat from those heaters is utilized within the enclosure to heat other, less
temperature sensitive components. To keep moisture from collecting internally,
pressurized water vapor is discharged from the dehydrator through a discharge
port and diffuser during regeneration. The ADH Sirocco AC NEMA automatic air
dehydrator is also available with optional Type 1 and Type 2 MIL-SPEC
connectors, making field replacement quick with minimal downtime.
