Gum Bath System Controls and Indicators. Figure 2-10 and Table 2-10 list the controls and indicators for the
gum bath system.
Table 2-10. Gum Bath System Controls and Indicators
Control or Indicator
Exhaust Fan Switches and
Indicator lights are on to indicate exhaust fan operation.
Air Flow Indicator
Provides indication of air flow to gum bath. Calibrated in pounds
and ounces, corresponding to flow of air in liters per second.
Indicates steam flow rate.
Indicating and controlling device for gum bath preset temperatures.
Gum Bath Hood Light Switch
Controls hood light operation.
Air Flow Regulator
Regulates air to gum bath. Rate of flow required is 1 liter per
second ( 15%).
Temperature Control (Steam)
Temperature control of high pressure boiler steam output up to
Indicates water level in low pressure boiler.
Maintains low pressure boiler steam output to gum bath.
Indicates boiler pressure.
HI Limit Control and Pressure
Protects boiler from damage if boiler pressure is too high.
Boiler On/Off Switch
Controls operation of low pressure boiler.
Low Pressure Boiler Automatic
Water Feeder System
Maintains low pressure boiler water level.
Turns gum bath circuit On or OFF.
Turns high pressure boiler heater circuit ON or OFF.
Fume Hood Light Switch
Controls exhaust fans operation.
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