ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
0034 00
TROUBLESHOOTING PROCEDURES
UNIT TROUBLESHOOTING PROCEDURES TACTICAL WATER
PURIFICATION SYSTEM (TWPS)
THIS SECTION COVERS:
High Pressure Pump
INITIAL SETUP:
TWPS Operating
Maintenance Level
Unit
HIGH PRESSURE PUMP AND TURBOCHARGER MALFUNCTIONS
Table 8. High Pressure Pump, Turbocharger Troubleshooting.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
1
HP pumps do not start when
Failure to follow start-up procedures.
Be sure all steps have been completed.
start button is pushed. Green
light does not come on. Red
Failure of High Pressure Pumps Start
With the RO Feed Pump ON and the reject
light does not come on. Feed
button or PLC Slot #1 Input card.
flow over 10 gpm, open OCP display panel
Pressure Low alarm is not on.
to expose sub-panel (WP 0060). Push and
hold HP Pump Start. Check the Slot #1
LED lights. If channel 7 is not ON:
1) Open the Slot #1 wire-way cover.
Locate the IN7 terminal. Check for
AC 110-volts between IN7 and
ground while pushing and holding
the start button.
2) If voltage is found, replace the Slot
#1 Input card (WP 0060).
3) If voltage is not found, replace the
High Pressure Pumps Start button
Failure of PLC Slot #4 Output card or
Open the PDP door and turn the Main
failure of the P-5 motor contactor M504 -
Circuit Breaker to the ON position. Follow
actuating coil failure.
normal start-up steps up to starting the High
Pressure Pumps. Locate contactor M504
and push the start button. Do not hold in. If
the contactor does not pull in:
1) Open the Slot #4 wire-way cover.
Locate the O3 terminal. Push the
button and check for AC 110 volts
between O3 and ground.
2) If voltage is not found, replace the
Slot #4 output card (WP 0060).
3) If voltage is found, replace the
contactor (WP 0063).
Failure of PLC Slot #2 Input card or motor
If the contactor pulls in but immediately
contactor auxiliary relay.
drops back out when the push button is
released, find the PLC Slot #2 card. Push
the start button again and hold in. If the
channel 11 light is OFF:
1) Open the Slot #2 wire-way cover.
Locate the IN11 terminal. Check for
AC 110-volts between IN11 and
ground while pushing and holding the
start button.
2) If voltage is found, replace the Slot #2
Input card (WP 0060).
3) If voltage is not found, replace the
motor contactor (WP 0063).
0034 00-26
