Aqua-Pure APUN101 - Manual (Page 8)

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SECTION 3: MAINTENANCE
The media in this the APUN Series Upfl ow Acid Neutralizer System is sacrifi cial, therefore it must be replenished periodically. The frequency is
dependent on the raw water pH and your water consumption habits. The lower the pH and the higher the water usage, the more frequently
replenishment will be required. One easy way of determining when to replenish is by placing a mark on the outside of the tank at the level
of the media when fi rst installed. Periodically shine a bright light through the tank and compare the current level to the mark, if it is down
more than two (2) inches, add media to the mark. If you are unable to see through the tank, remove the fi ll-port cap and measure down
to the top of the media. The tank should be 2/3 full. If not, add media.
REPLENISHING MEDIA:
1) Close inlet and outlet valves. Open bypass valve so untreated water can still be used during the replenishment operation.
2) Open boiler drain to relieve pressure. Remove fi ll-port cap using wrench provided, some water will drain out of the fi ll-port opening. Use
a fl exible tube to siphon approximately two gallons of water from the tank.
3) Using the funnel provided, add the required amount of media, not to exceed the indicated line on the media tank. A bright light may be
placed behind the tank to observe the media level.
4) Refer to Steps 8-9 in Section 2 for fl ushing instructions to complete the replenishment operation.
Figure 4. ADDITION OF NEUTRALIZER MEDIA
Add media through fi ll-port using funnel