TM 10-6640-238-13 5-26 WARNING The gum bath unit is heavy (160 lbs/71 kg).    To prevent  injury,  two  people  are required to remove gum bath from countertop. i. Lift and remove gum bath (1) from countertop. j. Tag and disconnect wiring and conduit (2) from pyrometer fuse box (3). j. Remove four screws (10) and washers (11) and separate gum bath (1) from mounting bracket (12). INSTALL Install Gum Content Test Bath.  See Figure 5-9. a. Position mounting bracket (12) on bottom of gum bath (1) and secure with four screws (10) and washers (11). b. Connect conduit (2) and wiring (from pyrometer fuse box (3)) as tagged to gum bath (1).  Remove tags. WARNING The gum bath unit is heavy (160 lbs/71 kg).    To prevent  injury,  two  people  are required to install the gum bath into the countertop. c. Position gum bath (1) on countertop. d. Connect conduit (2) and wiring (from pyrometer) as tagged to gum bath (1).  Remove tags. e. Align gum bath (1) mounting holes and secure with eight screws (6), lockwashers (7) and washers (8) through bottom of countertop. f. Apply teflon tape to male fittings.  Be sure to wrap tape in same direction as pipe thread. g. Connect drain line union (5) to gum bath (1). h. Connect steam line union (4) to gum bath (1). i. Connect wiring as tagged and conduit (2) to pyrometer fuse box (3).  Remove tags. j. Close drain valve No. 7. k. At Power Panel No. 2, set circuit breaker A15CB5 to ON. l. At Main Power Panel, set circuit breakers, A1CB18 and A1CB19 to ON. m.   Prepare and operate water system using internal water tank as source in accordance with procedures listed in paragraph 2-6j. n. Inspect for leaks and check for proper operation.