Heath Consultants Hi Flow Sampler - Manual (Page 47)

Hi Flow

Sampler Maintenance
Instruction 0055-9017 47
4.4.2 Leak-Gas Sensor Filter
The leak-gas sensor filter is located inside the flow block of the leak-gas sensor
assembly. See Figure 4-4.
Equipment Required:
• Medium Phillips Head Screwdriver
• Replacement Filter (P/N 0055-0045)
Procedure:
1. Remove the cover per Section 4.3.
2. Remove tubing from inlet of sensor assembly.
3. Unscrew the filter chamber’s gas inlet fitting; then pull out old filter and discard.
4. Insert new filter; reinstall the inlet fitting; then reinstall tubing.
5. Replace the cover that was removed in Step 1.
4.4.3 Background-Gas Sensor Filter
The background-gas sensor filter is located inside the flow block of the background-gas
sensor assembly. See Figure 4-4.
Replace filter as previously described for the leak-gas sensor filter.
Figure 4-4. Leak Gas & Background Gas Sensor Filter Replacement