CommScope HR300 Series User manual

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HR300 SERIES
DEHYDRATOR
USER MANUAL
Bulletin AE01B-A0595-002Rev: A
© 2015 CommScope, Inc. All rights reserved (07/15)

HR300 SERIES DEHYDRATOR USER MANUAL
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Contents
Section 1 General Information.............................................................................................................................................................3
1.1 Introduction..............................................................................................................................................................................3
Section 2 Safety Information ...............................................................................................................................................................3
Section 3 Equipment............................................................................................................................................................................4
3.1 Supplied Equipment .................................................................................................................................................................5
Section 4 Description...........................................................................................................................................................................6
Section5 Installation ...........................................................................................................................................................................6
5.1 Unpacking.................................................................................................................................................................................6
5.2 Mounting..................................................................................................................................................................................7
5.2.1 19” Rack Mounting...................................................................................................................................................................7
5.2.2 Wall Mounting..........................................................................................................................................................................7
5.3 Electrical Connections ..............................................................................................................................................................7
5.3.1 Power Connections...................................................................................................................................................................8
5.3.2 Power Connections...................................................................................................................................................................8
5.4 Pneumatic Connections............................................................................................................................................................8
5.4 Operation .................................................................................................................................................................................8
5.6 Alarms.......................................................................................................................................................................................9
Section 6 Corrective Maintenance and Spare Parts ............................................................................................................................9
Section 7 Outline................................................................................................................................................................................10
Section 8 Customer Service ...............................................................................................................................................................10
8.0Introduction............................................................................................................................................................................10
8.1 In Case of Trouble...................................................................................................................................................................11
8.2 Initial Steps by CommScope ...................................................................................................................................................11
8.3 Repair Center Process ............................................................................................................................................................11

HR300 SERIES DEHYDRATOR USER GUIDE MANUAL
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Section 1 General Information
1.1 Introduction
The HR300 is a heat regenerative air dryer. It
utilizes redundant compressors and drying
canisters to insure a reliable flow of dry air for
pressurization of air cable. The canisters
automatically regenerate, eliminating the
maintenance associated with typical desiccant
dryers.
The HR300 must be located such that only
authorized personnel have access.
CAUTION: The HR300 utilizes heat to
regenerate the drying canisters. Mount the
HR300 at the top of the equipment rack if
possible. Should be placed in the top of the
equipment rack with nothing mounted above
it. A minimum gap of at least one rack unit
should be left unused above the dehydrator.
Section 2 Safety Information
Make sure that the information in this
document has been understood by the persons
performing the procedures:
•Electrical Hazard! Unplug power cord
before servicing unit.
•Let unit cool before removing cover.

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Section 3 Equipment
Output Pressure
3 kPa (.44 psig), nominal
Maximum Flow Rate
300 lph (10.6 scfh)
Safety Valve
7 kPa (1.0 psig)
Output Air Dew Point
-45°C (-50°F) , nominal
Desiccant Regeneration
Automatic by heat
Regeneration Phase Interval
2 hours heat / 5 hours operation
Alarms
low pressure, high pressure, high
humidity (optional, sold separately)
Low Pressure Alarm
1.5 kPa (0.22 psig)
High Pressure Alarm
4.5 kPa (0.65 psig)
High Humidity Alarm
10% RH (optional, sold separately)
LED Indications
Power on, Alarm codes
Acoustic Noise
<50 dBA
Enclosure Degree of Protection
IP20
Operating Temperature
-5°C to +50°C
(+23ºF to + 122ºF)
Storage Temperature
-40°C to +70°C
(-40°F to +158°F)
Power Supply Std.
-48 / -60 V DC
Power Consumption
<45 W
Dimensions
2 RU
(428 mm x 87 mm x 305 mm)
(16.85 in x 3.43 in x 12.0 in)
European Community Directives
CE
Safety Normative
ETSI EN 60950-1
ANSI/UL 60950-1
CAN/CSA-C22.2
No. 60950-1-07
Electromagnetic Compatibility
Normative
ETSI EN 301 489-1
ANSI CFR 47 Part 15
Quality Assurance Std.
ISO 9001
Weight
6.24 kg (13.76 lbs)
Output Pneumatic Connector
4 each 3/8” Compression Fittings

HR300 SERIES DEHYDRATOR USER GUIDE MANUAL
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3.1 Supplied Equipment
Item
QTY
Description
A
1
HR300 Dehydrator
B
2
Mounting Brackets
B1
6
M4x10 PPH Screws, SST, Pass
B2
6
M4 Flat Washer, SST, Pass
C
1
Power Cable
D
30.5 m
100 ft
9.5 mm (3/8”) Output Tubing
Additional Accessories (sold separately)
HR300-KIT-ETSI HR300 ETSI N3 RACK BRACKETS KIT
HR150-KIT-ACDC HR300 AC TO 48 V DC POWER CONVERTER KIT
MT/HR-KIT-HUMIDITY Humidity Sensor Kit

HR300 SERIES DEHYDRATOR USER GUIDE MANUAL
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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

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5.2 Mounting
CAUTION: The HR300 utilizes heat to
regenerate the drying canisters. Mount the
HR300 at the top of the equipment rack. The
heat created by the HR300 is dissipated out of
the top and side of the dehydrator. DO NOT
mount any equipment above the HR300.
5.2.1 19” Rack Mounting
Attach the supplied rack brackets with the
included screws to the front mounting holes for
installation in a standard 19” equipment rack as
illustrated below. The hardware necessary for
mounting to the equipment rack is not included
5.2.2 Wall Mounting
Install the standard 19” rack brackets on the
rear of the chassis with the included screws as
illustrated below. The brackets will provide
enough clearance for the tubing and electrical
connections.
Secure the unit to the wall using appropriate
fasteners for the wall material. The hardware
for mounting to the wall is not included.
5.3 Electrical Connections
Caution: The ON/OFF switch on the front must
be switched off prior to disconnecting the
dehydrator from the power supply prior to
servicing.
A protective earth terminal is available through
the power connector J1 and is marked by the
Earth Ground symbol.
Additionally, there is an external ground stud
that can be used for additional electrical
protection.

HR300 SERIES DEHYDRATOR USER MANUAL
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5.3.1 Power Connections
Verify that the power supply is the correct type
and rated voltage prior to connecting the
HR300. See power ratings label on rear side of
the dehydrator.
The power cable comes pre-terminated for
connection to J1 on the rear of the dehydrator.
The HR300 incorporates reverse polarity
protection. If the unit does not power up when
connected to the DC supply, verify polarity and
correct if necessary. The supply end of the
power cable is left un-terminated to
accommodate any type of power supply.
If the proper DC power supply voltage is
connected to the dehydrator and the power
switch is turned on but the unit fails to operate,
verify the polarity. If the polarity is incorrect,
have it reversed and then re-connect to the
dehydrator. The HR dehydrators are equipped
with reverse polarity protection, but will not
operate under reverse polarity.
Polarity for the power cable is:
Red –Positive
Black –Negative
White - Ground
5.3.2 Alarm Connections
Alarm wiring will need to be provided by the
customer at the installation site.
5.4 Pneumatic Connections
The HR300 has a quantity of four 9.5 mm (3/8
in) compression fittings located on the rear of
the chassis. The dehydrator is shipped with one
port open to ambient air. The other three ports
are plugged with pressure caps in order to
prevent air from escaping from these ports
when not in use. In order to use these
additional ports, simply remove the pressure
caps.
5.4 Operation
Connect the included tubing to an open port on
the rear of the unit. All unused ports must be
plugged with pressure caps. Turn on the power
switch located on the front face. The LED will
illuminate.

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The first compressor will start and air will begin
flowing to the transmission line(s).
If this is a new installation, the transmission
lines must be purged by creating a small leak at
the far end of the transmission lines and
allowing the dehydrator to pump dry air through
them.
A minimum of three air volume exchanges is
required. If the installation is located in a very
humid area, up to twelve air exchanges may be
necessary to properly purge the transmission
line. The time, in hours, necessary to exchange
the air one time is based on the total air volume
(V) of the waveguide and antenna system.
Purging time (hours) = (3 x V) / 300, where V is
line volume in liters
At the conclusion of the purging cycle, close the
far end of the transmission lines.
5.6 Alarms
The HR300 is equipped with an LED on the front
panel for a visual indication of alarm conditions.
A green LED indicates all is well with the
dehydrator. A solid or blinking amber LED
indicates a problem with the dehydrator.
Blinks
Alarm
Description
Solid
Amber
System
Failure
Indicates a failure of the
controller. Replacement will be
necessary.
1
High
Humidity
(optional)
Indicates output air is above 10%
RH. This can be caused by long
storage periods and should clear
in the first 24 hours of operation.
2
Low
Pressure
Indicates a system pressure
lower than alarm threshold.
3
High
Pressure
Indicates a system pressure
higher than alarm threshold.
If multiple alarms exist at the same time, they
will blink in sequence with approximately two
seconds between.
Front of Chassis
Rear of Chassis
Section 6 Corrective Maintenance and Spare
Parts
The HR300 is designed to be maintenance free.
If you experience any issues with the HR300,
please contact CommScope. See Section 8 for
additional information.
ALARM
SYMBOLS
ALARM
OUTPUT
WIRES COLORS
BLACK (NO)
WHITE (COM)
RED (NC)

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Section 7 Outline
Outline without mounting brackets
Outline for 19’’ rack and wall mounting
Outline side view
Outline side view wall mounting
Section 8 Customer Service
8.0 Introduction
CommScope provides in-warranty and out-of-
warranty repairs as well as dehydrator and
compressor overhauls from several Repair
Centers. Coordination of these services is
provided through the nearest Sales Office or
Customer Service Center. The Center is also
prepared to help you with the following:
•Technical Assistance
•Troubleshooting