CO Guardian 452 Kurzanleitung
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
CO Guardian LLC
1951 E. Airport Dr.
Tucson, AZ 85706
CARBON MONOXIDE DETECTOR MODEL 452 INSTALLATION AND
OPERATIONAL MANUAL
Document No. 01-2510-02
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 1 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
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MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 2 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
LOG OF REVISIONS
REV
NO.
PAGE
NO.
DATE
DESCRIPTION
APPROVED
IR
1 thru 17
9/15/02
Initial Release
ASH VIJ
A
1 thru 17
11/23/02
Editorial Changes and
Revised Figure 2 and 5.
Revised Self Test
ASH VIJ
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 3 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
INTENIONALLY LEFT BLANK
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 4 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
TABLE OF CONTENTS
LOG OF REVISIONS...................................................................................................................................3
TABLE OF CONTENTS ...........................................................................................................................5
DESCRIPTION ............................................................................................................................................7
1.0 GENERAL .....................................................................................................................................7
2.0 PHYSICAL DESCRIPTION...........................................................................................................7
TABLE 1 - Part Numbers......................................................................................................................7
3.0 LEADING PARTICULARS ............................................................................................................7
TABLE 2 - Leading Particulars .............................................................................................................8
4.0 SCOPE..........................................................................................................................................9
5.0 SERVICE FACILITIES ..................................................................................................................9
6.0 INSTALLATION PROCEDURE.....................................................................................................9
FIGURE 1 - Recommended Installation Locations.............................................................................11
FIGURE 2 - Indicator Cutout ..............................................................................................................11
FIGURE 3 - Circuit Breaker Cutout ....................................................................................................12
FIGURE 4 - Installation Schematic.....................................................................................................12
7.0 MAINTENANCE INSTRUCTIONS ..............................................................................................14
8.0 CARBON MONOXIDE DETECTOR SCHEDULED MAINTENANCE.........................................14
9.0 SELF TEST SEQUENCE............................................................................................................15
10.0 PILOT RESPONSE TO IN-FLIGHT CO ALARM.....................................................................15
11.0 ALERT CYCLE ........................................................................................................................16
12.0 UNIT FAILURE INDICATION: .................................................................................................16
13.0 RS-232 DATA BUSS OPTION ................................................................................................16
14.0 Warranty ..................................................................................................................................16
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 5 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
FORWARD
This document provides information intended for use by persons who, pursuant to current regulatory
requirements, are qualified to install this equipment. Because equipment and system installations vary
depending on a particular aircraft, this document is intended only as a guideline. If further information is
required, contact:
CO Guardian, LLC
1951 E. Airport Drive
Tucson, AZ 85706
(520) 982-8052
(800) 639-7139
We welcome your comments concerning this document. Although every effort has been made to keep it
free of errors, some may occur. When reporting a specific problem, please describe it briefly and include
the document number, the paragraph/figure/table number, and the page number. Send your comments to
the address above.
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 6 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
DESCRIPTION
1.0 GENERAL
This section gives a physical and functional description of the CO Guardian CO
Detector indicator as installed in Cessna 172 aircraft.
2.0 PHYSICAL DESCRIPTION
CO Detector indicator flange type front panel unit part numbers are listed in
Table 1.
PART NUMBER MOUNT POWER DATA BUSS
452-101-001 Panel 14 VDC RS-232 Data Buss
452-101-002 Panel 28 VDC RS-232 Data Buss
452-101-003 Panel 14 VDC None
452-101-004 Panel 28 VDC None
TABLE 1 - Part Numbers
3.0 LEADING PARTICULARS
Table 2 gives the CO Detector leading particulars.
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 7 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
LEADING PARTICULARS
PARAMETER SPECIFICATION
PHYSICAL
Dimensions (approximate)
Weight (actual)
ENVIRONMENTAL
Cooling
Temperature and Altitude
Temperature
Non-operating high temperature
Non-operating low temperature
Operating high temperature
Operating low temperature
Temperature Variation
Altitude
Decompression
Overpressure
Humidity
Operational Shock and Crash safety
Vibration
Magnetic Effect
Power Input
Voltage Spike
Radio Frequency Emission
Electrostatic Discharge
POWER REQUIREMENTS
Power - 14 VDC Models
Power - 28 VDC models
Dissipation (nominal)
14 and 28 vdc models
Dissipation (maximum)
14 vdc models (heater ON)
28 vdc models (heater ON)
3.35 in. X 2.25 in. X 1.50 in.
3.5 oz.
Passive
DO-160D, Category B1
(DO-160D Category B1)
+85 °C
-55 °C
+55 °C
-20 °C
DO-160D, Category B
(DO-160D, Category B1) 25,000 feet
DO-160D, Category B1
DO-160D, Category B1
(DO-160D Category A) 95percent
DO-160D Category B
DO-160D: Category S, Curve M
DO-160D, Category Z
DO-160D, Category B
DO-160D, Category B
DO-160D, Category B
DO-160D, Category A
+14 VDC (Nominal 9.0 vdc to 15.1 vdc)
+ 28 VDC (nominal 18.0 vdc to 30.3 vdc)
<1 watt
9 watts
10 watts
TABLE 2 - Leading Particulars
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 8 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
4.0 SCOPE
The Model 452 Carbon Monoxide Detector is designed to detect, measure, and
provide both a visual and aural alert to the crew of piston engine type aircraft
before the level of carbon monoxide (CO) reaches a critical level.
The installation consists of a single carbon monoxide detector indicator operating
on aircraft DC power. The aircraft supplied power and aircraft wiring is protected
by a 2 ampere, resetable, trip free, type circuit breaker. The Carbon Monoxide
Detector is installed in the existing aircraft instrument panel within view and reach
of the pilot.
The CO Detector contains a Test/Reset button, an aural alarm buzzer, an Amber
LED ALERT annunciator, and a green LED STATUS annunciator.
The carbon monoxide alarm level is calibrated to provide both an aural and visual
alert within 5 minutes or less whenever the carbon monoxide level reaches 50
parts per million (PPM) by volume or above per TSO C48A. The warning time is
shortened at higher levels of CO concentrations and becomes approximately
instant should the carbon monoxide level reach 400 parts per million by volume
(PPM) or above.
In case of a carbon monoxide alert, the pilot can acknowledge the alert and
silence the aural warning while keeping the visual alert until the carbon monoxide
level is again reduced below the alert level. The indicator is automatically reset
when the CO level drops below 50 PPM. There is a three-minute delay at startup
for sensor to stabilize before the unit will sense CO.
5.0 SERVICE FACILITIES
The operator can service all components other than the model 452 units itself at
an FAA certified Repair Station.
NOTE: The sensor requires special gases for testing and calibration. If any
discrepancies are found with the unit during installation or during the
seven-year operational service life, the unit must be returned to CO
Guardian for repair or replacement. After seven (7) years, the unit must be
returned to the manufacturer for CO sensor replacement and re-calibration.
6.0 INSTALLATION PROCEDURE
The following documents the installation criteria of the Carbon Monoxide Detector
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 9 of 17
CO Guardian LLC Document No. 01-2510-02
1951 E. AIRPORT DRIVE Date: 11/23/02
TUCSON, AZ. 85706 REV A
Installation:
• Install the CO Detector on the instrument panel in view and within reach of the pilot.
• Insure that the air intake on the front of the CO Detector is not obstructed.
• Install the CO Detector in a location on the instrument panel without high or
disturbed airflow movement. The CO Detector will detect the presence of CO more
effectively if the unit does not have air blowing over it.
• Insure that the CO Detector installation area meets the temperature and humidity
ranges listed in the List of Particulars specifications. Temperature and humidity
conditions outside the specification may affect the sensitivity of the alarm.
MODEL 452 INSTALLATION AND OPERATIONAL MANUAL Page 10 of 17
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