TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
Table 3-1. Direct Support Troubleshooting - continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ROWPU ASSEMBLY - continued
6.
INOPERABLE DISSOLVED SOLIDS MONITOR SYSTEM
WARNING
High voltages in this equipment can cause serious injury or death. When
applying power during a test, take proper measures to ensure personal safety.
Never work on electrical equipment unless there is another person nearby who is
familiar with the operation and hazards of the equipment and who is competent in
administering first aid.
Step 1.
Remove cover from TDS monitor and check for blown/defective fuse and disconnected wires.
Replace fuse and/or reconnect wire.
Step 2.
Check for 115 VAC at TDS MONITOR POWERjack, J12.
If voltage is measured, go to step 4.
Step 3.
Remove power at power source and perform a point-to-point continuity check of power circuit.
a.
If CB8 is open (in ON position), replace it Refer to paragraph 3-49.
b.
If wiring is open, tighten connections and/or replace defective wire.
Step 4.
Check for defective sensor as follows:
a.
Disconnect sensor at pipe.
b.
Check continuity as follows
Check Point A
Check Point B
Required Value in Ohms
Pin B, J11
Outer Electrode
0-0.2
Pin A, J11
Inner Electrode
0-0.2
Pin C
Pin D
8-10K
Pin E
All other pins
Infinity
Replace sensor if any measurement is incorrect. Refer to paragraph 3-17.
3-14
