TM 10-5410-221-24
b. Installation. Install check valve (6, fig. 2-14) in
(2) Slide clamp (1) over pump (4) and pump
mounting bracket and tighten securely.
reverse order of removal procedure using figure 2-14 as
(3) Connect electrical connector to end of
a guide and observing the following.
pump (4).
(1) Install new packing (5) on check valve (6)
(4) Connect inlet and outlet lines to pump (4).
and install expander.
c. Centrifugal Pump Test and Float Switch Test.
(2) Position check valve (6) with the arrow
(1) Remove cover from drain sump (20, fig.
pointing down-stream and tighten fittings on check valve
2-14) and fill with water.
(6).
(2) Close centrifugal sump circuit breaker
located on electrical distribution panel assembly.
Tube Assembly Clamps
(3) Float switch inside the sump assembly
(20) shall energize the pump motor and discharge water
a. Removal. Remove damage or defective tube
from sump (20).
clamps according to sequence of index numbers
(4) Float switch shall shut off pump (4) when
approximately two inches of water is remaining in sump
(1) Remove nut, washer and bolts (7, 8, 9, fig.
(20). The remaining water will drain by gravity.
2-14). Spread clamps (10, 11) apart and slip from tube
assemblies.
Check Valve
(2) Remove bolt (21), washer (22) and spread
clamps (23, 24) apart and slip' from tube assembly.
a. Removal.
Remove damaged or defective
(3) Remove nut, washer and bolts (25, 26,
check valve according to sequence of index numbers
27). Remove bracket (29) and spread clamps(28)
apart and slip from tube assemblies.
Note. Clamps (23, 24 and 28) are located in-
(1) Disconnect inlet and outlet fittings from
2-14) located directly behind
side the water tunnel and are reached by jacking up the
centrifugal pump (4) in water service inlet box.
shelter and removing the panels covering the water
(2) Remove check valve (6) from water
service box.
b. Installation. Install clamps in reverse order of
(3) Remove expander fitting from valve (6)
and remove packing (5).