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English Instructor Manual (PDF) - Metric Version - National ...

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Key Points: For troubleshooting fi lters, refer students to pages the Troubleshooting chapter in the<br />

Pool & Spa Operator Handbook. Select sample problems from each fi lter type and have student<br />

fi nd cause and possible solution. Provide suffi cient examples for the student to become familiar<br />

with content of each sheet and how the information could be useful.<br />

Troubleshooting:<br />

Pressure sand fi lters<br />

Pressure cartridge fi lters<br />

Pressure D.E. fi lters<br />

Vacuum D.E. fi lters<br />

Final Questions: Ask the participants if they have any questions pertaining to the lesson they<br />

have just completed. If there are participants who are still having trouble with the concepts of this<br />

lesson, offer additional help during a break or after class.<br />

Page 94<br />

© 2014 <strong>National</strong> Swimming Pool Foundation®

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