TM 10-6640-215-13 3-9.       REMOVE/INSTALL ELECTRIC STILL This task consists of: a. Removal c. Installation b. Clean INITIAL SET-UP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) General Safety Instructions WARNING Before  performing  any  maintenance  actions  on  electrical  equipment,  ensure  all electrical  power  has  been  turned  off.    Death  or  serious  injury  may  occur  from failure to do this. REMOVAL 1. Remove Distilled Water Container.  See figure 3-6. The  distilled  water  container  is  removed  by  simply  separating  the  Velcro  retaining  strap  and  removing  the defective container from the supporting shelf. 2. Remove the Electric Still. a. At MAIN POWER PANEL, place circuit breaker A1CB16 to the OFF position. b. Remove still's electric power cord from convenience outlet. c. Remove tubing from still and lift defective still free from shelf and retaining ring.  Drain residual water from still. CLEAN a. Remove any loose scale or crud residue from still by blowing out with low pressure (20 psi) air. b. Clean still's interior with a solution of 10% acidic acid to remove any buildup of scale or crud. c. Rinse with fresh water, dry interior and exterior thoroughly. 3-26