TM 10-4610-232-12 Table 2-13.  Operator Preventive Maintenance Checks and Services (PMCS) (Continued) Item No. Interval Item to Check/Service Crewmember/Procedure Not Fully Mission Capable If: WARNING Do    not    touch    sump    heaters    while testing.    They  are  hot  and  can  cause serious burns. 22. Before Sump Heaters a.  Check for broken lens or heat Broken heat lamp or other damage that And Heat Lamps lamp. would prevent operation. b.  Check that lamp is securely installed. WARNING Make sure no plastic tubes are laying against heaters.  Failure to do so will result  in  damage  to  tubing  and  can present a fire hazard. c.  Inspect cables for damage 23. Before Fire a.  Check for proper charge Charge in red zone. Extinguishers (green zone) on extinguisher Pressure gage. b.  Inspect for loose mounts or Brackets. WARNING Wear protective face shield and chemical gloves when handling calcium   hypochlorite.      Hypochlorite will give off chlorine  vapor  which  will burn   your   nose,   throat   and   lungs. Keep   head   away   from   top   of   tank while  inspecting  it.    See  a  medic  if fumes am inhaled. 24. Before Hypochlorite a.  Inspect tank for cracks and Damage that would prevent operation. Tank punctures. b.  Check for missing or discon- Fittings or strainer loose or missing. nected quick-disconnect fittings and strainer 25. Before Polyelectrolyte a.  Inspect polyelectrolyte tank/ Damage that would prevent operation. and Sequestrant frame and sequestrant tank/ Chemical frame for cracks and punctures. Tanks and b.  Check for missing or discon- Fittings or strainer loose or missing. Frame nected quick-disconnect fittings and strainer. Change 12  2-41