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Safety With Heating and Air-conditioning Systems



Keep these 10 safety precautions in mind when working with heating and air-conditioning systems.

1.  The heater core on a heating and ventilation system
     has coolant passing through it and can be very hot. 
     Be careful not to touch these parts when they are
     hot.

2.  Many electrical components are used on heating
     and air conditioning systems.  Always use the
     correct testing tools when diagnosing these
     systems.

3.  Be careful not to scrape your hands on the heater
     core as these parts are very sharp.

4.  Always wear OSHA-approved safety classes when
     working on heating and air conditioning systems.

5.  When using the propane leak detector, be sure the
     propane torch flame is away from other objects that
     could be burned.





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Safety

6.  On the high-pressure side of the AC compressor,
     the pipes carrying the refrigerant may become
     very hot.  Be careful when touching these pipes to
     avoid burning your hands.

7.  AC refrigerants are a chemical mixture that requires
     special handling.  Wrap a clean cloth around the
     fittings, valves, and connections when performing
     work on the system.  Never touch the refrigerant. 
     If it comes in contact with you hands, flush the
     exposed area with cold water, and seek medical
     attention if needed.

8.  AC refrigerant can cause severe frostbite and
     immediate freezing upon contact with skin or other
     tissue. 

9.  Never discharge any refrigerant into an enclosed
     area where there is an open flame. 

10. With heating and air-conditioning systems, if the
      ignition is on, the radiator fan may go on
      unexpectedly time.  Always be careful and aware
      of the radiator fan's operation.


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