User Instructions

M
acurco™ HD-11 Hydrogen Gas Detector
U
ser Instructions
Important: Keep these User Instructions for reference
G
ENERAL SAFETY INFORMATION
I
NTENDED USE
T
he Macurco Hydrogen Gas Detector HD-11 is a low voltage (12-
2
4VAC or VDC) electronic detector of hydrogen gas. The HD-11 is
d
esigned for connection to alarm control panels. Alarm control panels
t
hat work on 12 or 24 VDC can provide battery backup to the HD-11.
T
his gas detector is NOT designed to detect smoke, fire or carbon
m
onoxide.
L
IST OF WARNINGS AND CAUTIONS
•
Each person using this equipment must read and understand the
information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in
accordance with these User Instructions, may adversely affect product
performance and result in sickness or death.
•
Use only for monitoring the gas which the sensor and detector are
designed to monitor. Failure to do so may result in exposures to gases
not detectable and cause sickness or death. For proper use, see
supervisor or User Instructions, or call Macurco Technical Service.
•
HD-11 may not function effectively below 32 °F or above 120°F. Using
the detector outside of this temperature range may adversely affect
product performance and result in sickness or death.
• This detector helps monitor for the presence and concentration level of
certain specified airborne gases. Misuse may produce an inaccurate
reading, which means that higher levels of the gas being monitored
may be present and could result in overexposure and cause sickness
or death. For proper use, see supervisor or User Instructions, or call
Macurco Technical Service.
• The HD-11 is not designed to measure compliance with Occupational
Safety and Health Administratio
n (OSHA) commercial or industrial
standards.
• When the unit is powered up it performs a self-test during which the
green LED light will blink for a period of one and one half to two
minutes. Afterward, the green LED light will turn on continuously to
indicate the unit is in normal operation (ARMED). If the self-test fails or
the green LED light does not turn on continuously do not use. Failure
to do so may adversely affect product performance and result in
sickness or death.
• Immediately exit the environment if there is an alarm condition on the
detector. Failure to do so may result in sickness or death.
• This detector will only indicate the presence of Hydrogen gas at the
sensor. Hydrogen gas may be present in other areas. Accommodation
spaces should be well ventilated when household
cleaning supplies or
similar contaminants are used.
• Do not cover or obstruct visual alarm LED. Doing so may adversely
affect product performance and result in sickness or death.
• Do not disassemble unit or attempt to repair or modify any component
of this detector. This detector contains no user serviceable parts, and
substitution of components may adversely affect product performance
and re
sult in sickness or death.
CAUTION
• Avoid the use of harsh cleaning materials, abrasives and other organic
solvents. Such materials may permanently scratch the surfaces; damage
the sensor, labels, or instrument housing.
• If you have any doubts about the applicability of the equipment to your job
situation, consult an industrial hygienist or call Macurco Technical Service.
USE INSTRUCTIONS AND LIMITATIONS
Each person using this equipment must read and understand the
information in these User Instructions before use. Use of this equipment by
untrained or unqualified persons, or use that is not in accordance with these
User Instructions, may adversely affect product performance and result in
sickness or death.
USE FOR
The Macurco Hydrogen Gas Detector HD-11 is a low voltage (12-
24VAC o
r VDC) dual relay, hydrogen detector. The unit is designed
to work with control panel or other building management equipment
to help monitor levels of hydrogen gas in a room or a facility where
hydrogen gas may be present, for example where forklifts, backup
power supplies, or golf carts battery charging stations are present.
Use only for monitoring the gas which the sensor and detector are designed
to monitor. Failure to do so may result in exposures to gases not detectable
and cause sickness or death. For proper
use, see supervisor or User
Instructions, or call Macurco Technical Service.
DO NOT USE FOR
The Macurco Hydrogen Gas Detector HD-11 is NOT intended for use
in industrial applications such as refineries, chemical plants, etc. Do
NOT mount the HD-11 where the normal ambient temperature is
below 40ºF (4.4ºC) or above 120ºF (49ºC). The HD-11 mounts on a
4x4 or 2-gang electrical box supplied by the co
ntractor. DO NOT
install the HD-11 inside another enclosure or protective cover unless
it has good air flow through it. The HD-11 is NOT designed to detect
smoke, fire or carbon monoxide. Do NOT mount the HD-11 in a
corner.
HD-11 may not function effectively below 32 °F or above 120°F. Using the
detector outside of this temperature range may adversely affect product
performance and result in si
ckness or death.
GENERAL DESCRIPTION
The Macurco Hydrogen Gas Detector HD-11 is a low voltage (12-
24VAC or VDC) electronic detector of hydrogen gas. The HD-11 is
designed for connection to alarm control panels to help monitor levels
of hydrogen gas. This gas detector is NOT designed to detect smoke,
fire or carbon monoxide.
FEATURES
• Detects Hydrogen Gas
• SPDT Alarm and N.C. Trouble Relays
• Ca
n Be Self-Restoring or Latching
• Electronic Sensors: No Maintenance or Recalibration
• Temperature Compensated
• Simple Installation and Operation
• Supervised Sensor
SPECIFICATIONS
• SIZE: 4 ½ X 5 X 1 5/8 inches
• SHIPPING WEIGHT: 0.54 pound
• VOLTAGE: 12 to 24 VAC or VDC
• CURRENT (non-alarm): 45 ma @ 12 VDC, 22 ma @ 24
VDC, 65 ma @ 12 VAC, 45 ma @ 24 VAC
• CURRENT (in alarm): 70 ma @ 12 VDC, 35 ma @ 24 VDC,
100 ma @ 12 VAC, 65 ma @ 24 VAC
• COLOR: White
• SENSOR MAINTENANCE: Not required
• ALARM RELAY RATING: 0.125 AMPS, 40V, 3VA
• TROUBLE RELAY: 0.250 AMPS, 40V, 10VA
• OPERATING TEMPERATURE RANGE: 32° to 120° F
• ALARM SET POINT: 10% LEL HYDROGEN
INSTALLATION AND OPERATING INSTRUCTIONS
The following instructi
ons are intended to serve as a guideline for th
e
use of the Macurco HD-11 Hydrogen Gas Detector. It is not to b
e
considered all-inclusive, nor is it intended to replace the policy an
d
procedures for each facility.
This detector helps monitor for the presence and concentration level of
certain specified airborne gases. Misuse may produce an inaccurate
reading, which means that higher levels of the gas being monitored may b
e
present and could result in overexposure and cause sickness or death
.
For proper use, see supervisor or User Instructions, or call Macurc
o
Technical Service.
LOCATION
The Macurco Hydrogen Gas Detector HD-11 is NOT intended for us
e
in industrial applications such as refineries, chemical plants, etc. Th
e
unit can cover approximately 900 sq. ft. The coverage depends on ai
r
movement in the room or facility. Locate the unit high in the roo
m
where storage batteries are being charged, or where there may b
e
other hydrogen sources. Extra detectors may be needed near an
y
areas were people work or the air is stagnant.
The HD-11 is not designed to measure compliance with Occupational Safety
and Health Administration (OSHA) commercial or industrial standards.
INSTALLATION
1. Mount the HD-11 high on a wall about one foot down from th
e
ceiling. Use the same spacing as for smoke detectors- 30-foo
t
centers, 900 square feet per detector.
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2. The three part plastic case allows the HD-11 to be either surface
mounted or installed over a four-inch square or double gang
electrical box, providing a near flush mount. The HD-11 snap on
front cover will need to be removed before installation. To