TM 10-4610-239-24
TM 08580B-24/3
Table 3-1. Direct Support Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
BACKWASH PUMP ASSEMBLY
1. PUMP ELECTRIC MOTOR FAILS TO ST ART WHEN BACKWASH SWITCH IS SET TO START
WARNING
Electrical high voltage can cause serious injury or death. Some tests performed in
troubleshooting require power to be connected. Always take proper measures to ensure
personal safety.
NOTE
Ensure that all circuit breakers are set. Refer to figure FO-3 for schematic diagram and
figure FO-4 for interconnection diagram. Refer to figure 3-1 for control box support
diagram, figure 3-2 for junction box support diagram, and figure 3-12 for backwash pump
assembly support diagram.
Step 1.
Set ELEMENT CLEANING switch to START and release.
If motor starts, set ELEMENT CLEANING switch to OFF and go to step 2.
If motor does not start, set ELEMENT CLEANING switch to OFF and go to step 5.
3-62
