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MACURCO CONTROLLERS & DETECTORS (CONT.)
SETTING THE CONTROLS
If your installation has no pre-determined Fan and Alarm set points, Macurco makes the following suggestions: Set the
FAN 1 level 50% higher than the average time weighted average of carbon monoxide (CO), usually 50 ppm, that is desired in the
facility. This will be a FAN 1 setting of 75.
Set the SS103-10A FAN 2 level 50% higher than FAN 1, or about 112 ppm
Set the SS103-3A FAN 2 and the SS103-10A ALARM to 200ppm. Set both Alarm Delays to about 30 minutes.
NOTE: Do not set the SS103-10A ALARM higher than 200 ppm when using SS102HC-1 sensors.
If the Alarm relay is used to operate a fan, Macurco suggests that the Time Delay be set to about 3 minutes, and on the
SS103-10A, the ALARM level be set to 50% higher than the FAN 2 or about 170.
ALARM DELAY PROGRAMMING: SS103-10A
Set the ALARM adjustment pot to the desired STEL (Short Term Exposure Limit). Usually, this is the Uniform Building
Code (UBC) standard of 200 ppm. (OSHA suggests using a 200 ppm CEILING, but currently has no standard for STEL for carbon
monoxide.) To set the Alarm delay on the SS103-10A use the four section programming switch, which is located on the printed
circuit board near the fan and alarm relays. A chart inside the cover of the case shows the settings for popular delays. Figure 1
shows more settings.
Figure 1.
ON
OFF
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4
50 min. 44 min. 35 min. 25 min. 8 min. 15 sec.
NOTE: If using SS102HC-1 sensors, do not set the Alarm above 200.
ALARM ACTION
If an alarm is used, a procedure should be set up in the facilities emergency response procedures for what action to take
when the alarm occurs. Consider the following in making those decisions:
The Carbon Monoxide levels of 50 ppm averaged over 8 hours and 200 ppm for some time period, are based on full shift
exposures of workers. This usually does not happen in parking garages, where most people are there for only a few minutes.
Unless there are full time workers in the facility, Macurco suggests that CO alarms be not considered as life threatening
emergencies. Instead use them as advisories to check that all control system components are operating OK.
For the SS102H, in addition to Carbon Monoxide, this system will actuate on smoke and various gases such as gasoline
fumes, propane, alcohol and other combustible vapors.
LIMITED WARRANTY
The SS102H, SS102HC-1, SS103-3A, and SS103-10A gas detectors are warranted to be free from defective material and
workmanship for a period of one (1) year from the date of installation. If any component becomes defective during the warranty
period, it will be replaced or repaired free of charge, if the unit is returned in accordance with the instructions below. This warranty
does not apply to units that have been altered or had repair attempted, or that have been subjected to abuse, accidental or otherwise.
The above warranty is in lieu of all other express warranties, obligations or liabilities. THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE LIMITED TO A PERIOD OF ONE (1) YEAR FROM
THE PURCHASE DATE. Macurco shall not be liable for any incidental or consequential damages for breach of this or any other
warranty express or implied arising out of or related to the use of said gas detector. Manufacturer or its agent’s liability shall be
limited to replacement or repair as set forth above. Buyer’s sole and exclusive remedies are return of the goods and repayment of the
price, or repair and replacement of non-conforming goods or parts. (The Uniform Commercial Code applicable in the State of
Colorado shall govern.)
RETURN INSTRUCTIONS
Call (303) 781-4062 for a Return Authorization number. Then carefully pack the gas detector with a written description of
the nature of the return. Send the unit to the following address:
Macurco Inc.
3946 South Mariposa Street