Priming and installing the PF-2 fluoride and arsenic water filters for the Berkey Water Filter systems is pretty easy and straight forward. The PF-2 water filters must be primed prior to installation, and when installing into the lower chamber they should not be screwed on more than 8 revolutions onto the Black Berkey stem.
The media within the PF-2 water filter contains micro fine dust as a result of the manufacturing process that can cause the purified water to have a bitter taste. To dislodge the process dust from the Berkey PF-2 water filters, it is necessary to prime each element. We start off with the video showing how the priming procedure is done, followed by text instructions and some additional helpful notes.
PF-2 Water Filter Priming Procedure
1. With blue caps in place, wash the exterior of each PF-2 water filter with a mild dish soap.
2. With clean hands, remove both blue caps from each end of the PF-2 water filter.
3. Place the rubber-priming button (tan colored) onto one end of the PF-2 water filter and align the hole in the button with the hole in the PF-2 water filter.
4. Press the priming button up against a sink faucet so that the priming button creates a seal between the faucet and the PF-2 filter.
5. While holding the priming button against the faucet, turn on the cold water gently and allow the water to fill the cavity of the PF-2 water filter and discharge from the opposite end. Allow the water to discharge for up to 2 minutes or until the water runs clear, whichever is longer. Hint: Place your thumb on top of the faucet to apply pressure creating a tighter seal.
6. Now repeat the process by turning the PF-2 water filter over and priming the filter from the opposite end in the same manner.
7. Prime each additional PF-2 filter repeating steps 3-6.
PF-2 Water Filter Installation Procedure
1. Remove the upper chamber from the filtration system and place it upside down on a counter so that the stems of the Black Berkey elements are facing upward.
2. With the water flow arrow pointing away from the upper chamber (the PF-2 water filters have threads on one end only) screw the PF-2 water filters onto the stems of each black berkey element 8 revolutions. Notes: a) Do not screw the PF-2 filter on more than 8 revolutions as this may damage the internal media screen b) The flow arrow should point away from the upper chamber. Remove flow arrow after screwing on.
3. Replace the upper chamber onto the lower chamber (the PF-2 water filters should now be hanging in the lower chamber). Fill the upper reservoir with water and let it drain into the lower chamber. When the lower chamber is full, discard this 1st batch of water, which may contain some residual process dust. Your purification system is ready for use. Note: On rare occasion it can take up to 5 full chamber flushes/batches before the dust subsides. If the dust not not subside after the 5th full batch of water, please contact us for potential replacement.
Additional Notes on the PF-2’s
1. When the lower chamber is full, the PF-2 water filters will be immersed.
2. When the water level in the lower chamber rises above the bottom of the PF-2 water filters, it is normal for small amounts of water to burp through threads connecting the PF-2 water filters to the Black Berkey elements.
3. The lower chamber in most gravity purification systems has a 2-3 gallon capacity and a typical household uses about 1 refill per day. We recommend that the upper chamber be filled at night prior to going to sleep. The water from the upper chamber should be purified and awaiting use in the lower chamber by the morning. It is normal for the purification process to slow down significantly when the water level in the lower chamber rises above the bottom of the PF-2 filter. Households requiring more water can speed up the flow rate by drawing off the purified water into a water pitcher or other containing when the water level in the lower chamber rises about the bottom of the PF-2 water filters.
Click here for instructions on How to Prime the Black Berkey Purification Elements.