Table 2-1.—Troubleshooting Procedures—Continued Fuel Pump Blower Motor Smokestack Smokebox Cover Fails to deliver fuel to burner Continues to trip off Gases are smoky Escaping smoke 1.  Fuel  supply 2.  Reversed  pump  rotation 3.  Suction/discharge  fuel  hoses 4.  Fuel  pump  strainer 5.  Burner  nozzle 7.  Pump  drive  coupling 8.  Fuel  solenoid  valve 1.    Fuel pump and motor 1.  Electrode  spark 2.  Contaminated  fuel 3.  Burner  nozzle 4.  Blower  operation 5.    Power source - low- voltage output 1.  Boiler  box  gasket 2.  Smokebox  cover  bolts Water Temperature Gauge Water Pump Shower Stand Nozzles Indicates overheating Fails to deliver water Not discharging enough water 1.  Temperature  control 2.  Low-water  probe 1.  Pump  motor 2.  Shaft  seals 1.    Water flow control valves 2.  Fittings Open the drain cock on the water pump by Troubleshooting Procedures turning it to the left and tilt the water pump on end to let the water drain out. This section contains troubleshooting information for locating and correcting most of the operating troubles that may develop in your bath unit. The troubleshooting procedures are listed in table 2-1. The Reach under the water heater and open the drain cock by turning it to the left. When the bath unit is not scheduled for use for 5 days or more, perform the following procedures: Remove  the  fuel  feed  hose  from  the  fuel table lists the common malfunctions that you may find during operation or maintenance of the bath unit or its components. You should perform the tests/inspections container. and  corrective  actions  in  the  order  listed.  Each Place the end of the hose into a quart container. Fill the container with diesel fuel. Turn on the load limit switch and allow the unit to operate until the quart container is almost empty. Turn off the water heater fuel shutoff valve and let the system operate until the flame is extinguished. malfunction for an individual component, unit, or system is followed by a list of tests or inspections to help you determine what corrective action(s) to take. This manual does not attempt to list all possible malfunctions and corrective actions or all the necessary tests and inspections. Remember, you should always notify  your  supervisor  when  something  unusual Turn off the load limit switch. occurs. 2-7