TM 10-6640-215-13 5-20.  REMOVE/INSTALL ELECTRIC STEAM BOILER. This task consists of: a.  Removal b.  Installation INITIAL SET-UP: Tools required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) Material Required Teflon Tape, (Appendix E, Section II, Item 157) Personnel Required Two (2) Equipment Condition Boiler low water cutoff pump control removed (para.  5-16) Boiler low water pump removed (para.  5-17) Electric steam boiler sight glass removed (para.  5-18) Operating/Limit control switches removed (para.  5-19) General Safety Instructions WARNING ELECTRICAL SHOCK 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 Remove Electric Steam Boiler.  See Figure 5-18. WARNING To   prevent   injury   to   personnel,   be   sure   electric   steam   boiler   has   had   time   to   cool   before performing  any  maintenance.    Steam  temperature  as  high  as  600°F  (279.9°C)  can  be  obtained  in this unit. a. Open boiler access door.  Tag for reconnection and disconnect power input electrical wiring and conduit. b. Disconnect two pipe unions located on top of boiler. c. Disconnect pipe union at drain valve. d. Remove four bolts, lockwashers, and flat washers. WARNING To prevent injury, two personnel are required to remove electric steam boiler.  Boiler is very heavy. e. Remove electric steam boiler from machinery room. 5-36