CO Guardian 452-201 User manual

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8-20-2004
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 1 of 22
CO Guardian LLC
1951 E. Airport Dr.
Tucson, AZ 85706
OWNERS MANUAL
CARBON MONOXIDE DETECTOR MODEL 452-201
REMOTE UNIT

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 2 of 22
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CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 3 of 22
LOG OF REVISIONS
REV
NO.
PAGE
NO. DATE DESCRIPTION
APPROVED
A 1 thru 20 03/20/03 Initial Release ASH VIJ
B 1 thru 20 03/25/03 Added placard callout to
Par. 6.2 (a.), Page 12.
ASH VIJ
C 1 thru 20 11/03/04 Revised for all Applicable
Aircraft
ASH VIJ
D 1 thru 20 11/17/04 Revised pages 1,310,13,
21, 22 and 23
ASH VIJ
E 1 thru 20 5/4/05 Revised pages 7, 8 and
12
ASH VIJ
F 1 thru 20 8/20/06 Revised pages 7, 8, 12,
13, 14, 5 and 21
ASH VIJ

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 4 of 22
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CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 5 of 22
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........................................................................................................................... 8
TABLE 2 - Leading Particulars............................................................................................................................ 9
4.0 SCOPE ...................................................................................................................................................... 10
5.0 SERVICE FACILITIES............................................................................................................................... 10
6.1 RECOMMENDED INSTALLATION AREAS.............................................................................................. 12
FIGURE 1 - TYPICAL RIGHT INSTRUMENT PANEL...................................................................................... 12
FIGURE 2 - TYPICAL PILOT INSTALLATION SHOWN .................................................................................. 12
6.2 INSTALLATION INSTRUCTIONS ............................................................................................................. 13
6.2.1 INSTALLATION INSTRUCTIONS (PART NUMBERS 452-201-001 through -004) ........................... 13
6.2.2 INSTALLATION CHECKS (PART NUMBERS 452-201-001 through -004)........................................... 14
6.2.3 INSTALLATION INSTRUCTIONS (PART NUMBERS 452-201-005 through -008)............................... 14
6.2.4 INSTALLATION CHECKS .................................................................................................................. 15
7.0 MAINTENANCE INSTRUCTIONS............................................................................................................. 16
8.0 CARBON MONOXIDE DETECTOR SCHEDULED MAINTENANCE ....................................................... 17
9.0 WEIGHT AND BALANCE / EQUIPMENT LIST......................................................................................... 17
10.0 LIMITATIONS......................................................................................................................................... 18
11.0 NORMAL PROCEDURES ..................................................................................................................... 18
10.1 SELF TEST SEQUENCE .................................................................................................................. 18
12.0 PERFORMANCE ................................................................................................................................... 18
13.0 EMERGENCY PROCEDURES.............................................................................................................. 19
14.0 UNIT FAILURE INDICATION:................................................................................................................ 20
15.0 RS-232 DATA BUSS OPTION............................................................................................................... 20
16.0 Warranty................................................................................................................................................. 21

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 6 of 22
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
[phone]
[phone]
www.Coguardian.com
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.

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 7 of 22
DESCRIPTION
1.0 GENERAL
This section gives a physical and functional description of the CO Guardian CO Detector
indicator as installed in a typical reciprocating engine type aircraft.
2.0 PHYSICAL DESCRIPTION
Remote mounted CO Detector part numbers are listed in Table 1.
PART
NUMBER
SERVICE
LIFE
Pressure
Relay*
POWER CONNECTOR DATA BUSS**
452-201-001 7 Years No 14 VDC 8 pin & 9 pin RS-232 Data Buss
452-201-002 7 Years No 28 VDC 8 pin & 9 pin RS-232 Data Buss
452-201-003 7 Years No 14 VDC 8 pin No Data Buss
452-201-004 7 Years No 28 VDC 8 pin No Data Buss
452-201-005 7 Years No 14 VDC 9 pin RS-232 Data Buss
452-201-006 7 Years No 28 VDC 9 pin RS-232 Data Buss
452-201-007 7 Years NO 14 VDC 9 pin RS-232 Data Buss
452-201-008 7 Years NO 28 VDC 9 pin RS-232 Data Buss
452-201-009 7 Years Yes 14 VDC 9 pin RS-232 Data Buss
452-201-010 7 Years Yes 28 VDC 9 pin RS-232 Data Buss
TABLE 1 - Part Numbers
The Detector must be returned to CO Guardian at the end of Service Life for replacement and
calibration of the CO sensor to maintain airworthiness of the unit.
*Pressure relay is designed for information purpose. The relay is activated at 10,000 feet for 5
seconds and remains on after 12,500 feet using the pressure sensor built in the 452 models.
** RS-232 data is transmitted to MFD Displays like the Garmin G1000 and Garmin GNS480
that displays CO Level, Cabin Temperature, Cabin Pressure and has the capability of being
remotely reset able using RS232 input into the detector. See the Manufacturers installation
manual for hookup and data display capabilities.
**RS-232 data is transmitted to MFD Displays like the Garmin G3X, G1000 and Garmin
GNS480 that displays CO Level, Cabin Pressure and has the capability of being remotely reset
able using RS232 input into the detector with certain MFDs. See the Manufacturers installation
manual for hookup and data display capabilities.

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 8 of 22
3.0 LEADING PARTICULARS
Table 2 lists the CO Detector leading particulars. Model 452-201 Series CO Detectors are
approved to TSO C48A.

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 9 of 22
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)
Keep Alive circuit Power
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
< 8 MA
TABLE 2 - Leading Particulars
4.0 oz.

CO Guardian LLC Document No. 03-452-201
1951 E. AIRPORT DRIVE Date: 8/20/2006
TUCSON, AZ. 85706 REV F
MODEL 452-201 OWNERS MANUAL Page 10 of 22
4.0 SCOPE
The Model 452-201 Series Carbon Monoxide Detectors are designed to detect, measure,
and provide a visual alert to the crew of Reciprocating Engine type aircraft before the
cockpit 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, resettable, trip free, type circuit breaker. The Carbon Monoxide Detector
recommended location is behind the existing aircraft instrument panel.
The CO Detector installation consists of the CO Detector, a Test/Reset button, and a
required amber ALERT annunciator light mounted on the cockpit instrument panel.
The carbon monoxide alarm level is calibrated to provide a visual alert within 5 minutes or
less whenever the carbon monoxide level reaches 50 parts per million (PPM) by volume
or greater 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 greater.
In case of a carbon monoxide alert, the pilot will receive an amber Alert annunciator light
that is mounted on the Pilot's instrument panel. The visual alert will remain until the
carbon monoxide level is reduced below the alert level. The indicator is automatically
reset when the CO level drops below 50 PPM. There is a three-minute delay in the -001
through -010 part number units at startup to stabilize the sensor before the unit will
accurately sense CO levels.
5.0 SERVICE FACILITIES
With the exception of the Model 452-201-* CO Detectors, the operator can service all
other components of the installation at an FAA certified Repair Station. CO Detectors
must me returned to CO Guardian for repair or overhaul.
NOTE
The sensor requires special gases for testing and calibration. If any discrepancies
are found with the unit during installation or during the operational service life, the
unit must be returned to CO Guardian for repair or replacement. The CO Detector
unit must be returned to the manufacturer for CO sensor replacement and re-
calibration at the end of the service life applicable to the units part number.
-011