TM 10-4610-310-14
OPERATOR INSTRUCTIONS
LIGHTWEIGHT WATER PURIFIER
MAINTAINING NORMAL OPERATION
GENERAL
This work package contains information and instructions for maintaining normal operation of the Lightweight
Water Purifier (LWP).
NORMAL OPERATING PARAMETERS
During operation of the LWP the normal operating parameters will be followed. Any deviations will be an
indication that something is malfunctioning.
Table 1 provides the normal range of operating parameters and normal operations. Consult troubleshooting
sections if normal parameters are not met.
Table 1. Normal Operating Parameters.
Description
Display/Condition
Remarks
Feed pressure (UF)
35 60 psi
See Figure 1.
Differential pressure (UF)
0 30 psi
See Figure 1.
Backwash pressure (UF)
35 60 psi (occurs 3
See Figure 1.
times per hour)
Fabric filtrate tank (UF)
Should be at least half full
Will not be full during
cleaning cycle
Never exceed 100 F
UF feed temperature
Varies with source water.
Backwash cycle and fast
Rejects for 7 seconds
3 cycles of this per each
flush cycle (UF)
stops for 3 seconds.
cartridge. (occurs once
every 15 minutes)
High-pressure pump flow
3.6 3.8 GPM
Diesel engine throttle
controls the flow. See
Figure 2.
Reverse osmosis module
Up to 1200 psi
Never exceed 1200 psi
pressure
Differential pressure (RO)
Not more than 1200 psi
See Figure 3.
Product water flow meter
2.1 GPM for freshwater,
See Figure 4. If source
1.25 GPM for seawater
water TDS is higher than
45,000, production of
water can or will be below
1.25 gpm.
Product water quality
Less than 1000 ppm
See WP 0017 00 if source
(TDS) and at least 2 ppm
water is higher than
chlorine
45,000 ppm
Stroke and speed controls
30% speed 60% stroke
See Figure 4 speed and
on chemical injection
stroke can be adjusted to
pump.
meet injection needs.
Air Tank Pressure
Above 30 psi.
Refill if less.
Diesel engine fuel (TQG
Check fuel level for both
Refill if necessary
and high pressure pump
engines
