TM 10-4610-232-12
Table 4-2. Unit Troubleshooting Guide (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If both continuity checks are okay, replace the cable between P15 and P30 (para. 4-27).
Step 5. Refer to the electrical schematic Appx. l-1. Check continuity, point-to-point, from J30A to J30B.
(a) Repair any hose or damaged wire (para. 4-32).
(b) Replace connector J30 assembly if faulty (para. 4-32).
(c) Replace LSL2 (Reference lnterconnection Diagram FO-2, Sheet 14) if it shows an open cir-
cuit (para. 4-55).
Step 6. Refer to the electrical schematic Appx. l-1. Check for continuity, point-to-point, from J30A to J30D
with the float lifted as in step 3.
(a) Repair any hose or damaged wire (para. 4-32).
(b) Replace connector J30 assembly if faulty (para. 4-32.
(c) Replace LSL2 reference Interconnection Diagram FO-2, Sheet 14) if it shows am open cir-
cuit (para. 4-5) .
4. POLYELECTROLYTE TANK LOW LEVEL indicator Iight or warning horn does not work (Reference Schematic
Diagram FO-1, Sheet 9, schematic line 926, and Schematic Diagram FO-1, Sheet 10, schematic line 1004).
Refer to light testing and alarm circuit troubleshooting for additional test procedures.
Notify direct support maintenance.
5. SEQUESTRANT TANK LOW LEVEL switch does not work (Reference Schematic Diagram FO-1, Sheet 9,
schematic lines 924,926-927).
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
NOTE
Drain the chemical tank before troubleshooting.
Remove connector P15 and P12 from the control panel. Check for 110-120 VAC across J15C and J1
2J. If voltage is not present, notify direct support maintenance.
Check for continuity across P15C and P15D. No power.
(a) If the continuity check is okay, go to step 3.
(b) If there is no continuity, go to step 4.
Use the chemical mixing paddle and lift the float in the chemical tank. Check for continuity across pins
P15C and P15E.
If the continuity check is okay, notify direct support maintenance to troubleshoot the
control panel.
Remove connector P30 from the JB3 junction panel. Check for continuity across J30A and J30C with
the float set as in step 3. Let the float drop and check for continuity across J30A and J30B.
If both continuity checks are okay, replace the cable between P15 and P30 (para.
4-27).
Refer to the electrical schematic Appx. I-1. Check continuity, point-to-point, from J30A to J30B.
(a) Repair any hose or damaged wire (para. 4-32).
(b) Replace connector J30 assembly if faulty (para. 4-32.
(c) Replace LSL3 (Reference Interconnection Diagram FO-2, Sheet 14) if it shows an open cir-
cuit (para. 4-55).
Step 6. Refer to the electrical schematic Appx. I-1. Check for continuity, point-to-point, from J30A to J30C
with the float lifted as in step 3.
(a) Repair any hose or damaged wire (para. 4-32).
(b) Replace connector J30 assembly if faulty (para. 4-32).
(c) Replace LSL3 if it shows an open circuit (para. 4-55).
6. SEQUESTRANT TANK LOW LEVEL indicator light or warning horn does not work (Reference Schematic Dia-
gram FO-1, Sheet 9, schematic line 929, and Schematic Diagram FO-1, Sheet 10, schematic line 1005). Refer
to light testing and alarm circuit troubleshooting for additional test procedures.
Notify direct support maintenance.
7. CLEAN/FLUSH TANK LOW LEVEL switch does not work (Reference Schematic Diagram FO-1, Sheet 9 sche-
matic lines 924,929-930).
NOTE
Drain the clean/flush tank and remove the level switch from the clean/flush tank
(para. 4-54) before troubleshooting.
Change 1 4-47
