HR300 SERIES DEHYDRATOR USER GUIDE MANUAL
Page
6
of
12
Section 4
Description
The HR300 dehydrator system is designed for
continuous automatic operation. It is a heat
regenerative desiccant dehydrator designed to
operate on -48 / -60 V DC. The desiccant
automatically regenerates by periodic heating
and requires no scheduled maintenance. It will
supply up to 300 liters per hour (10.6 scfh) of air
with a dew point of better than
–
45°C (
–
49°F) at
a nominal pressure of 3 kPa (0.44 psig).
The HR300 is designed for mount in a standard
19” equipment rack and has an option for ETSI
N3 rack-mounting with adapter plates (sold
separately). The HR300 requires 2 rack units to
mount.
Dry air is supplied to the transmission lines by
four independent outlets located on the rear of
the chassis.
Ambient air is drawn through desiccant beds by
two low power diaphragm compressors. The
adsorbent material in the desiccant canisters
removes moisture from the ambient air prior to
passing it through the internal manifold where
the system pressure and humidity level
(optional) is monitored.
System pressure dictates demand and the
HR300 will respond by changing the speed of
the compressors allowing the dehydrator to
function without pressure switches or
regulators. This increases compressor life and
overall unit reliability.
Section5
Installation
5.1
Unpacking
The HR300 includes all necessary brackets and
electrical terminations to successfully install the
unit in a site.
Installation of the HR300 requires the following
tools:
•
#1 and #2 Phillips head screw drivers
•
Wire cutters and wire strippers for
alarm terminations
J2 Alarm Connection
4 OUTPUT PORTS
-48/-60 DC POWER CONNECTOR
