Heath-consultants Hi Flow Sampler Manual de usuario descargar pdf (Pagina 46)

Maintenance Hi Flow



Sampler

46 Instruction 0055-9017

4.4 Replacing the Internal Filters

Three internal filters protect the instrument from being contaminated by dust and dirt.

Replace these filters when they look contaminated. A good indication that a filter needs

replaced is when the instrument’s gas-response time increases.

4.4.1 Leak-Gas Filter

The leak-gas filter is located between the sampling port on the flow-measurement tube

and its associated solenoid valve on the printed circuit board. See Figure 4-3.

Equipment Required:

• Medium Phillips Head Screwdriver

• Replacement Filter (P/N 07-1563)

Procedure:

1. Remove the cover per Section 4.3.

2. Remove tubing from old filter’s inlet and outlet.

3. Install tubing on new filter, making sure that the filter’s flow arrow points away

from the flow-measurement tube.

4. Replace the cover that was removed in Step 1.

Figure 4-3. Leak-Gas Filter

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Heath-consultants Hi Flow Sampler Manual de usuario Pagina 46