5/30/01
Page 3-5: Operating Instructions
Boxxer 421
Exhaust Diverter System
The exhaust diverter system consists of two components; the diverter valve and the
pump clutch. The diverter valve directs the flow of the exhaust through the coil heat
exchanger or directly out of the machine via the diverter exhaust muffler. The pump
clutch allows the pump to be turned on and off through a switch. This will enable the
machine to be used for flood extraction without the need for an inlet garden hose
connected to the machine. Thus preventing excessive filling of the recovery tank
through the temperature control system.
The Boxxer 421 can run in two different modes:
Cleaning Mode
To run the machine in Cleaning mode:
a) Turn the pump and diverter switch to the “ON” position.
b) Adjust thermostat knob to desired temperature.
Flood Damage Mode
To run the machine in Flood Damage mode:
a) Turn the pump and diverter switch to the “OFF” position.
b) Drain waterbox completely.
HOT SURFACES: When the machine is being run or after it has been
shut down, caution should be used around the muffler and the exhaust
diverter surfaces as they become hot during operation.
Do not use excessive force when engaging and disengaging the heat
exchanger bypass lever. This may cause damage to the exhaust diverter.
In order for the valve to operate properly, it should periodically be
engaged and disengaged.
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