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CAUTION:
Do not use a Gas-Rover without a dust and water-block filter.
8.
ROUTINE MAINTENANCE
Dust and Water-block Filter
A filter, housed in a knurled nut, removes particles of dust and dirt and blocks water. Do
not insert objects into the water block filter as they may puncture the filter. The filter needs to be
replaced monthly or sooner if it turns brown. Replacement dust and water-block filters are
available as Part No. WF-505 (package of 5 filters).
Figure 1.
WF-505.
Inlet Dust Filter
Removal of the intake connector of the instrument (used to attach the sampling system of
choice) exposes a metal filter pressfit onto the intake. These filters are not a substitute for dust
and water-block filters as they will not block water or remove very fine dust and dirt. If this filter
gets blocked, it should be replaced.
Water-stopper
The water-stopper (Figure 2) provides a quick way to continue
bar holing if water is encountered in a bar-hole. The water-stopper is
inserted between the dust and water-block filter and the bar hole probe.
A float inside the water-stopper is connected to a plunger which blocks
flow whenever the float is lifted by water. By depressing a release
push-button, the water is released and the plunger returned to its
normal position.
Figure 2.
Water-stopper
Dust-Stopper
The dust-stopper is a filter with a large surface area on which dust can collect without
slowing the sampling rate of the Gas-Rover. The filter element is easily cleaned or replaced by
removing the threaded cap and either blowing off the accumulated debris or pulling the filter off