TM 10-6640-239-13 4-110 4-47.    WATER PURIFIER. This task consists of: a. Remove b. Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Personnel Required Two (2) 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 Water Purifier.  See Figure 4-41. a. Unplug water purifier (1) from wall receptacle. b. Disconnect water supply tube (2). c. Remove two screws (3) and lift up water purifier (1) from mounting plate on curbside wall. INSTALL Install Water Purifier.  See Figure 4-41. a. Lower water purifer (1) onto mounting plate on curbside wall and secure with two screws (3). b. Connect water supply tube (2). c. Plug water purifier (1) into wall receptacle. d. Turn water purifier (1) on and check operation.