TM 10-4610-232-12
Table 4-2. Unit Troubleshooting Guide (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. TOOLS AND TEST EQUIPMENT. There are only a few tools and procedures necessary to troubleshoot the
ROWPU. These and an occasional assistant to help push switches or check continuity are all that is
required.
(a) Voltmeter with scales of:
0-500 volts AC
0-30 volts DC
Multiple resistance scales
(b) Common hand tools.
(c) A piece of # 12 or # 16 wire, 30 foot long with either alligator clips or test probes attached to it. This
is used to aid in checking cables for continuity or shorts where distances involved do not allow
using the standard volt/ohmmeter leads.
(d) Copy of the schematic diagram.
Step 4. PERSONNEL REQUIREMENTS. The procedures, which the electrician should already have been taught,
are how to check continuity, resistance short circuits, and voltages. The troubleshooter should also
realize the necessity of tight wire connections and should check them as part of his normal procedures
when analyzing a problem. These procedures will not be repeated in the following guidelines.
WARNING
Whenever a continuity check is called for, power must be shut off to the circuit being
tested. Failure to do so may result in serious injury or death from electrical shock.
2. ROWPU Electrical problems.
Isolate fault.
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
(q)
If a 115 volt circuit breaker keeps tripping, notify direct support maintenance.
If the control panel utility receptacle does not work, notify direct support maintenance.
lf the light test circuits do not work, notify direct support maintenance.
If the alarm silence does not work, notify direct support maintenance.
If the system on/system standby circuit does not work, notify direct support maintenance.
If the operation mode circuits do not work, notify direct support maintenance.
If the chemical pumps run but the chemical pump “ON” light does not work, (light test okay) notify
direct support maintenance.
If the raw water pump runs but the raw water pump “ON” light does not work (light test okay)
notify direct support maintenance.
If the air compressor runs but the air compressor hourmeter does not work, notify direct support
maintenance.
If the air compressor runs but the air compressor “ON” light does not work (light test okay) notify
direct support maintenance.
If the air blanket circuits work but the air blanket “ON” light does not come on (light test okay)
notify direct support maintenance.
If the ROWPU control circuits do not work, notify direct support maintenance.
If the ROWPU utility circuits do not work, notify direct support maintenance.
If the booster pump runs but the booster pump “ON” light does not work (light test okay) notify
direct support maintenance.
If the high pressure pump circuit breaker trips when the pump is started or the ROWPU shuts
down when the pump is started notify direct support maintenance.
If the high pressure pump starts but shuts down when the “START” button is released, notify
direct support maintenance.
If the high pressure pump runs but the pump hourmeter does not work, notify direct support
maintenance.
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