TM 10-6640-239-13 4-57 4-26.    MOTOR CONTROLLER. This task consists of: a. Remove b. Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (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.  Failure to comply with this warning may result in serious injury or death. REMOVE Remove Motor Controller (Typical).  See Figure 4-16. a. Switch appropriate circuit breaker to OFF on Power Panel No. 2. b. Loosen captive screw (1) and remove cover (2).  Tag and disconnect motor controller (3) wiring. c. Remove strain relief (4) retaining nut inside motor controller. d. Remove three screws (5) securing motor controller (3) to wall. e. Remove motor controller (3) feeding wires thru strain relief hole. INSTALL Install Motor Controller (Typical).  See Figure 4-16. a. Place motor controller (3) in position on wall and secure with three screws (5). b. Install wires thru strain relief holes and secure strain relief (4) using retaining nut. c. Connect wires as tagged to motor controller (3).  Remove tags. d. Install cover (2) and secure with captive screw (1). e. Verify proper operation of equipment.