TM 10-6640-215-13 Table 4-1.  Symptom Index -continued Troubleshooting Table Item Number Title 16. Vacuum pressure low due to leaks in system. 17. Water pump fails to run (power available to motor controller). 18. Water pressure low due to leaks in the system. 19. Water pressure switch fails to operate properly. 20. Water chiller fails to produce chilled water (power available). 21. Water heater fails to produce hot water (power available). 22. Sump pump fails to operate (power available). 23. Gas alarm system fails to operate or operates improperly. 24. Gum bath fails to operate properly (power available). 25. High pressure boiler fails to operate (power available). 26. Low pressure boiler fails to operate (power available). 27. RVP bath fails to operate (power available). 28. Manometer fails to operate (no physical damage apparent). 29. Kinematic viscosity test bath fails to operate (power available). 30. Centrifuge fails to operate (power available). 31. Distillation test apparatus fails to operate (power available). 32. Freezer fails to produce ice cubes (power available). 33. Oxygen stability bath fails to operate (power available). 34. Laboratory oven fails to operate (power available). 35. Burnout furnace fails to operate (power available). 36. Explosion proof refrigerator fails to operate (power available). 37. JFTOT fails to operate (power available). 4-12