TM 10-4610-310-14
0022 00
PROCEDURE SUMMARY- continued
settling tank is completely filled with the first pass product water, the booster pump will be used to supply water
from the settling tank to the UF module. The UF module will be operated with the control panel MODE switch in
maintenance mode so that the system does not backwash and waste first pass product water. In addition, UF
reject will be returned to the settling tank inlet to conserve first pass product water. The hypochlorite pump will
be used to inject hypochlorite. The product water tank T3 will be used for storage of the second pass product
after the NBC filter and chlorine injection.
FIRST PASS SETUP AND OPERATING PROCEDURE
1. The procedure begins after the LWP has been shutdown and de-energized, the settling and product water
tanks drained, and the LWP configured in the normal operating mode. The settling tank must be located
close enough to the RO module so that it can be filled with product water. Refer to Figure 1 as a guide in
performing the procedures for setup and operation of the first pass. (NOTE: If the system has already
been operated in double pass mode, it will be necessary to disconnect and cap the NBC canisters from the
product hoses between the RO module and chemical injection/cleaning module.)
Figure 1. Layout for the First Pass.
