ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0035 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
TROUBLESHOOTING PROCEDURES
UNIT TROUBLESHOOTING - TWPS CONTROL SYSTEMS
Table 2. OCP Display and Instrument Loop Troubleshooting Continued.
ITEM
MALFUNCTION
POSSIBLE CAUSES
CORRECTIVE ACTION
8
RO Feed Pressure display
4)
If no open circuits are found and the
cont.
does not change as the Main
current reading is still less than 3.75mA
Pressure control valve is
with the PDP ON, replace Slot 12 input
closed (continued).
card.
9
Reject flow reading is not as
PLC slot 9 output card failure or display
Conduct BIT test and stop at the display test.
expected from previous
failure.
If the display does not count up, refer to Item
operational data.
2 above.
Flow transmitter FT-401or flow sensor
Reconfigure the transmitter if the display on
FE-401 failure.
the instrument panel is not blank (WP 0043).
If this doesn't correct the problem perform
the following. With the TWPS operating
normally, open the Instrument Panel to
observe the flow transmitter.
1) If the display is blank, shutdown to
standby. Set the Main breaker to OFF
and then back to ON. If the display
remains blank after repeating several
times, replace the transmitter (WP
2) If the WARNING CHECK STATUS
message flashes on the display, refer to
Flow Loop Status Checking in WP
3) If the STATUS: ANALIZER screen
indicates FAIL, replace the transmitter
4) If the STATUS: SENSOR screen
indicates FAIL, replace the sensor (WP
5) If the EPROM ERROR (LOAD
DEFAULTS?) message is displayed,
follow the procedure to configure the
transmitter (WP0062).
6) If the reject display on the flow
transmitter does not change as the as
the product flow is changed, replace the
flow sensor (WP 0062). If the problem
is not corrected, replace the flow
transmitter (WP 0062).
7) If the display is very unsteady while the
TWPS is operating normally, replace
the flow sensor (WP 0062).
PLC slot 11 input card or Flow Transmitter
With the TWPS in STANDBY, open the
FT-401 output failure.
Instrument/Solenoid Panel and set the flow
transmitter output as follows (WP 0062):
Press the MAIN MENU key. Use the
up/down arrows to display the TEST/MAINT
screen.
1) Press ENTER key to display the
STATUS screen.
2) Press the down arrow until the
OUTPUT screen appears.
3) Press ENTER key to display OUTPUT?
XX.XX mA
0035 00-10
