TM 10-6640-215-13 5-19.  REMOVE/INSTALL OPERATING/LIMIT CONTROL SWITCHES. This task consists of: a.  Removal b.  Installation INITIAL SET-UP: Tools required General Mechanics Tool Kit, (Appendix B, Section [II, Item 2) Material Required Teflon Tape, (Appendix E, Section II, Item 157) 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. NOTE Procedures for removal/installation of the high limit control switch or the operating control switch are the same. REMOVAL Remove Operating/Limit Control Switches.  See Figure 5-17. a. At POWER PANEL No.  2, set circuit breaker A 15CB5 to OFF. b. Remove screw and cover from control switch. c. Tag for reconnection and disconnect wiring and conduit from control switch. d. Unscrew switch from piping. e. Unscrew pressure gage from piping. INSTALLATION Install Operating/Limit Control Switches.  See Figure 5-17. a. Apply teflon tape to male fittings.  Be sure to wrap tape in same direction as pipe thread. b. Screw pressure gage onto piping. c. Screw control switch onto piping. d. Connect wiring and conduit to control switch.  Remove tags. e. Install cover on control switch with screw. 5-34