TM 10-6640-215-13 4-48.  REMOVE/INSTALL OXIDATION STABILITY BATH- continued. b. Secure oxidation stability bath to countertop with eight flat washers, lockwashers, screws and nuts. c. Connect drain line located in cabinet "S1" to oxidation stability bath. d. Install heater element/junction box on bath and connect heater element leads in junction box. e. Replace junction box cover. f. Verify proper operation of oxidation stability bath. NOTE For component removal refer to TM 10-6640-229-13&P. 4-49.  REMOVE/INSTALL LABORATORY OVENS. This task covers: a.  Removal b.  Installation INITIAL SETUP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) Drill, (Appendix B, Section III, Item 1) Drill Set, (Appendix B, Section III, Item 1) 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 Laboratory Ovens.  See figure 4-49. a. Unplug, laboratory oven power cord from wall receptacle. b. Remove, twelve screws that secure laboratory oven support brackets to countertop. c. Remove laboratory oven from countertop. d. Remove twelve screws attaching brackets to oven and remove bracket. 4-131