MAINTENANCE FOR AREARAE STEEL
7-11
7.7 Sampling Pump Replacement
The sampling pump is positive-displacement piston pump.
When the pump approaches the end of its specified lifetime, it
consumes higher amounts of energy and significantly reduces
its sample-draw capability. When this occurs, it is necessary to
replace the pump.
1. Turn off the AreaRAE Steel, and remove the battery pack.
2. Open the housing, and then carefully remove the gas
piping plate. The pump is attached to the gas plate.
3. Carefully loosen the connector.
4. Disconnect the Tygon tubing that connects the pump to the
gas inlet port.
Figure 7-6
Sampling pump on gas plate
Figure 7-7
Gas plate connector