If there is any doubt, do not operate the tool. 14. Maintenance. For your safety, service and maintenance should be performed regularly by a qualified technician. The batteries must be changed regularly. This is not a personal safety device. This Carbon Monoxide Meter is not designed to take the place of a home Carbon Monoxide detector. Warning:The warnings, cautions, and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator. Unpacking When unpacking, check to make sure the parts shown on page 6 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible. Operation Refer to the Assembly Drawings on page 6. Battery Replacement Note: If the battery becomes weak, the LCD will display the following: 1. Remove the Protective Cover. 2. Use a screwdriver (not included) to remove the screw on the lower portion of the battery compartment. 3. Take out the old battery and replace it with a new 9 Volt battery. Make sure the battery polarity marks (+ and -) match up with those in the battery compartment. 4. Replace the back cover and secure it with the screw. Replace the protective case. SKU 92340 For technical questions, please call 1-800-444-3353 Page 3 Operation (continued) Note: When operating the unit, make sure the Sensor on the back of the unit is free and clear of any obstructions. Operating the Carbon Monoxide Meter 1. Press the On/Off button to activate the unit and it will begin measuring as you carry it, while walking around the test area. The results will be displayed on the LCD in PPM (Parts Per Million). 2. When finished, press the On/Off button to turn off the unit. Note: For use in dark environments, the LCD will light up. Press the Back Light button (see page 6) to turn on the light, and press it again to turn it off. Special Features: 1. To freeze the Carbon Monoxide Meter at a specific reference for later use, press the HOLD button. The word HOLD will appear on the LCD along with the saved measurement. To return to normal operation, press the HOLD button again. 2. If you want to keep track of the highest reading you take, press the MAX button. The LCD readout will not change as the unit takes in new readings. It will only show the highest reading encountered since you pressed the MAX button. To return it to normal operation, press the MAX button again. Important Carbon Monoxide Information Carbon monoxide is DEADLY in a closed environment. Early signs of Carbon Monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have any of these signs, GET FRESH AIR IMMEDIATELY, whether the meter has a high reading or not. Carbon Monoxide (CO), a colorless, odorless gas, is produced in dangerous levels from internal combustion engines (in enclosed areas) such as automobiles, lawnmowers, and any other small engine appliance. Gas, oil, and kerosene appliances that are not properly maintained will also produce this deadly gas. In the house, plugged chimneys, dirty flues, gas heaters, fireplaces, and furnaces are also capable of producing quantities of this silent killer. If high readings are found, immediately open a window and ventilate the room, if possible shut off the appliance, evacuate the area, and call your gas supplier or a qualified technician for analysis of the problem and service. US Department of Labor, Occupational Safety & Health Administration (OSHA) regulation 1917.24: The CO content in any enclosed space shall be maintained at not more than 50 PPM (0.005%). Remove employees from enclosed space if the CO concentration exceeds 100 PPM (0.01%). SKU 92340 For technical questions, please call 1-800-444-3353 Page 4 Important Carbon Monoxide Information (continued) Selected problems and the fuels and appliances that cause them. WARNING: These problems should only be diagnosed and remedied only Important Carbon Monoxide Information (continued) Selected problems and the fuels and appliances that cause them. WARNING: These problems should only be diagnosed and remedied only essential to reduce the risk of FIRE, EXPLOSION, and exposure to Carbon Monoxide, which may cause DEATH. Stove and Fireplaces that burn gas, wood, and coal produce to much Carbon Monoxide if these problems are present: 1. Cracked firebox. 2. Cracked Heat Exchanger. 3. Green or treated wood. 4. Defective/Blocked flue. 5. Insufficient air. Ranges and Ovens that burn natural gas or LPG (Liquefied Petroleum Gas) produce too much Carbon Monoxide if these problems are present: 1. Improper venting. 2. Misused as a heater. 3. Maladjusted burner. 4 Insufficient air. Water heaters that burn natural gas or LPG produce too much Carbon Monoxide if these problems are present: 1. Insufficient air. 2. Blocked/defective flue. ...