MAINTENANCE FOR AREARAE STEEL
7-12
5. Unscrew the two screws that hold the pump assembly to
the gas plate.
6. Replace the old pump assembly with a new one. Connect
the Tygon tubing to the gas inlet port. Reattach the pump.
7. Replace the gas piping plate and tighten the three screws
to hold down the sensors.
8. Reattach the hex screws holding the instrument housing
together, and reinstall the battery pack.
Internal External Filter
The internal External Filter’s function is to reduce the level of
dust and moisture entering the sensors and the pump. By
replacing the internal External Filter routinely, it can reduce
cost of maintenance on the pump or replacement of the
sensors.
The internal External Filter should be changed when build-up of
water droplets or dust is observed. To change the internal
External Filter, pull apart the lock connections and replace the
filter.
Figure 7-8
Gas plate screw
