TM 10-4610-310-14
OPERATOR MAINTENANCE
LIGHTWEIGHT WATER PURIFIER
ULTRAFILTRATION ASSEMBLY
MANUAL BACKWASH/FAST FLUSH PROCEDURE
INITIAL SETUP
Materials/Parts
Equipment Status
Stop watch (table 2, item 49, WP 0135 00)
High-pressure pump module is shutdown
Filtrate tank T2 full
GENERAL
This work package contains information and instructions for manual backwash and fast flush of all three
Ultrafiltration (UF) module membrane cartridges used in the Lightweight Water Purifier (LWP). If the backwash
and fast flush during normal operation and daily maintenance flushing does not maintain less than 4 psi TMP
increase, this procedure may be used as a supplement.
The backwash procedure cycles every 15 minutes; cycling each cartridge for 30 seconds, 7 seconds on and 3
seconds off. The fast flush procedure when maintenance is required cycles each cartridge for 30 seconds, 7
seconds on and 3 seconds off.
NOTE
Perform backwash as required, but at least once every 24 hours.
MANUAL BACKWASH/FAST FLUSH PROCEDURE
1. Make sure the fabric filtrate tank T2 is full. See Figure 1. Shut down the high-pressure pump according to
procedure. See WP 0009 00.
FILTRATE
TANK
Figure 1. Fabric Filtrate Tank T2.
