TM    10-4610-215-10 TM   08580A-10/1 Table  2-3.  Operator/Crew  Preventive  Maintenance  Checks  and  Services (Unit)   (Continued) B  -  Before D   -During A - A f t e r W   -   Weekly For readiness reporting Interval Procedures Equipment is not Item Item to be Check for and have repaired ready/available No. B    D   A    W inspected or adjusted as necessary if: 15 Color comparator Inspect the color comparator kit, TDS meter kit and TDS meter. Look for: Poor  condition Dirty  sample  cells Dirty color discs   Cracked or dirty frosted glass Clean  as  necessary. Notify unit maintenance if any part is defective. 16 Regulate prod– Inspect for loose hose con- Valves will not uct flow valve nections. Inspect valves to operate. and  backwash see if they operate freely valve and do not leak. Tighten  loose  connections. Notify unit maintenance if valves bind or leak. 17 Vent and drain Inspect for leaks and proper Valves will not valves and drain operation. operate. cocks Notify unit maintenance if you notice anything wrong. Do not operate ROWPU with an open junction box; it can kill you. 18 Junction Box Inspect the junction box for loose  power  cable  connectors. Securely tighten any loose connections. 19 Control  box Inspect  for  outside  damage. Any  toggle  switch assembly  and Clean out dirt and dust collected Junction box except  PANEL  LIGHT in them. is broken. assembly 2-22