TM 10-3930-659-20 2-19. SOLDERING. WARNING Cleaning    compound,    trichlorotrifluoroethane,    for    electrical    parts    is    toxic    and flammable,  and  reacts  violently  with  aluminum,  titanium,  barium,  lithium,  samarium, sodium, and potassium.  Always wear protective goggles and rubber gloves, and use only In a well-ventilated area.  DO NOT wear Jewelry while using cleaning compound. Avoid  contact  with  skin,  eyes,  and  clothes,  and  DO  NOT  breathe  vapors.    Cleaning compound  fumes  or  vapors  can  take  the  place  of  air  and  may  become  a  cancer producing agent.  DO NOT use near open flame or excessive heat.  The compound's boiling  point  Is  114°F  (460C).    If  you  become  dizzy  while  using  cleaning  compound, Immediately get fresh air and medical help.  If compound contacts eyes, immediately wash your eyes with water and get medical aid. CAUTION Use  low  wattage  soldering  gun  when  soldering  electrical  wires,  connectors,  terminal lugs, and receptacles.  High wattage soldering guns may damage parts by overheating. a. Solder    connection    must    be    bright    and    clean    before    soldering.        Remove    dirt    and    grease    with trichlorotrifluoroethane (Item 38, Appendix C).  Solder used must be of lead alloy (Item 30, Appendix C) with soldering flux (Item 20, Appendix C).  All wires, parts, and soldering gun (Item 36, Appendix F) must be tinned for good connection and maximum transfer of heat. b. To prevent overheating damage to electrical parts when soldering and unsoldering connections, hold bare wire, lead, or terminal lug close to soldering point with long roundnose pliers (Item 44, Appendix F).  Pliers act as heat sink and absorb excess heat. WARNING Cleaning    compound,    trichlorotrifluoroethane,    for    electrical    parts    Is    toxic    and flammable,  and  reacts  violently  with  aluminum,  titanium,  barium,  lithium,  samarium, sodium, and potassium.  Always wear protective goggles and rubber gloves, and use only In a well-ventilated area.  DO NOT wear Jewelry while using cleaning compound. Avoid  contact  with  skin,  eyes,  and  clothes,  and  DO  NOT  breathe  vapors.    Cleaning compound  fumes  or  vapors  can  take  the  place  of  air  and  may  become  a  cancer producing agent.  DO NOT use near open flame or excessive heat.  The compound's boiling  point  Is  1140F  (460C).    If  you  become  dizzy  while  using  cleaning  compound, Immediately get fresh air and medical help.  If compound contacts eyes, Immediately wash your eyes with water and get medical aid. c. Clean    all    solder    joints    with    a    scrub    brush    (Item    5,    Appendix    C)    and    electrical    parts    with trichlorotrifluoroethane (Item 38, Appendix C) after soldering to get a bright, clean surface. 2-10