Perma Pure Micro-GASS UG - Manual (Page 10)

10 Micro-GASS User Manual
5. Maintenance
5.1 Flow Rate
The system should be checked daily for proper flow rate.
5.2 Coalescing Filter Element
The filter element should be checked regularly to ensure that the element is in good
condition. If the filter is dirty or causing a flow restriction replace the filter element.
1. Remove the filter cap and element.
2. Inspect the o-ring for damage and replace if necessary.
3. Fit new filter element to raised portion of the filter cap and replace filter cap.
4. Tighten until snug, do not overtighten.
5.3 Dryer Element Replacement
Under the operating conditions specified, the Nafion dryer element could last for several
years. If element becomes wet, clogged, or dirty it may require replacement.
a. Element Removal
1. Disconnect the system power source.
2. Remove four (4) screws from filter housing flange.
3. Open cover and lift control panel to gain access to the system components.
4. Remove two (2) nuts from the sample inlet tee fitting.
5. Rotate the tee fitting counterclockwise and remove it from the heater sleeve.
6. While holding the filter heater sleeve from the inside of the enclosure,
remove the Kynar filter housing from the outside by turning counterclockwise
until it can be pulled out.
7. Remove nut and union from the outlet end of the dryer.
8. From the outlet end, carefully push the element into the housing until the end
of the element clears the o-ring.
9. Remove the o-ring and replace with new o-ring.
10. Grab element from filter end of the dryer and gently pull until element is free
of the housing.
11. Remove o- ring from housing with the element.