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TM 10-6640-238-13 5-24 5-13.    GUM CONTENT TEST BATH. This task consists of: a.   Remove b.   Install INITIAL SET-UP Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 1) Materials/Parts Required Teflon Tape, (Appendix E, Section II, Item 157) Lockwashers (8) 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 Gum Content Test Bath.  See Figure 5-9. a. At Main Power Panel, set circuit breakers A1CB18 and A1CB19 to OFF. b. At Power Panel No. 2, set circuit breaker A15CB5 to OFF. WARNING To  prevent  injury  to  personnel,  be  sure  gum  bath  has  had  time  to  cool  before performing any maintenance.  Steam temperature as high as 600F (279.9C) can be obtained in this unit. c. Open drain valve No. 7 to clear overhead pipes of steam or water. d. Tag and disconnect gum bath (1) wiring and conduit (2) from pyrometer fuse box (3). e. Disconnect steam line at union (4) located at rear of gum bath (1). f. Disconnect drain line at union (5) located at rear of gum bath (1). g. Remove cabinet drawers A1 and B1.  Remove eight screws (6), lockwashers (7), and washers (8) that secure gum bath (1) to countertop.  Discard lockwashers. h. Rotate gum bath (1) to gain access to wiring from pyrometer.  Tag and disconnect conduit (9) and wiring from pyrometer.


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