ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
PRE-OPERATIONAL DIAGNOSTIC SELF TEST PROCEDURES
OPERATION UNDER USUAL CONDITIONS
INITIAL SETUP
Personnel Required:
One Operator/Crew
Equipment Condition:
Electrical power to the TWPS has been established.
The air compressor has been started.
Pressure gauge PI-902 reads over 90 psig.
GENERAL
This section describes the TWPS Electrical Pre-Operational Diagnostic Self-Test Procedures. These
built-in-tests (BIT) check the operation of the lamps, displays, and alarm horn on the OCP (Operator
Control Panel). The tests also check the operation of automatic (PLC operated) valves on the TWPS. It
is not necessary for water to be in the TWPS to perform the Diagnostic Self-Tests, but a minimum air
pressure of 90 psig is required for the TWPS to operate the automatic valves.
A single-page summary of the tests is included in Table 1 at the end of this Work Package.
DIAGNOSTIC SELF-TESTS
Perform the diagnostic self-tests as follows:
1. Make sure that electrical power to the TWPS has been established as described in WP 0012,
Establishing Electrical Power.
2. Make sure that the Air Compressor had been started as described in WP 0014, Initial Start-Up or
Start-Up with the System Fully Drained.
3. Check the pressure reading at backwash and actuator air pressure gauge PI-902 (see Figure 1).
The pressure must read over 90 psig before the diagnostic self-tests can be run. If the pressure
is not over 90 psig, make sure the air compressor is on and wait until gauge PI-902 reads over 90
psig.
PRESSURE GAUGE PI-902
Figure 1. Pressure Gauge PI-902 Location.
0013 00-1
