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TM 55-1905-223-24-11
Toxic and flammable vapors are generated in the sewage
Provide ventilation from outside source before
removing covers, hoses, drain plugs, and fittings. Avoid open
flames and prolonged breathing of fumes.
Make sure the electrical power is OFF to prevent personal
a. Make sure the external sewage line valves and the backwash water valve are closed.
b. Disconnect the electrical cable from the sludge pump system (paragraph 2-18).
Although the system has been drained, a small amount of
effluent may still be contained within the pump. Avoid splashing
in eyes when disconnecting hoses.
c. Disconnect the outlet hose (2, FIGURE 2-21) from the pump at hose clamps (1).
d. Loosen the clamps (4, FIGURE 2-21) and remove the hose (5). Place a shallow pan under the hose
connections while disconnecting to catch any runoff.
e. Remove the mounting screws, nuts, and washers (7, FIGURE 2-21) and remove the pump from the
sanitary unit.
f. Remove the PVC fittings from the pump inlet and outlet (3, 6, FIGURE 2-21).
Flush the pump with water and disinfectant before disposal or
further handling.


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