Priming The Pf-2 Filters; When Do You Need To Replace Filters - Berkey PF-2 Instruction Manual

Priming the PF-2 filters

The PF-2 filters are filled with production particles, so make sure you repeat the action
below at least twice.
NB! The PF-2 filters are optional and do not come standard with a Berkey water filter
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1.
Remove the blue caps from the filter.
2.
Place the brown ring against the end
of the filter and let the tap flow slowly.
When doing this for the first time, a lot of
dust will flow out.
It is important that the flow passes
through both ends, see photo.

When do you need to replace filters

Unfortunately, neither the Black Berkey nor the PF-2 filters indicate when they need to
be replaced. You can calculate it yourself. Calculate the expiration date of your Black
Berkey filters via the step-by-step instructions below.
1. Each Black Berkey has a filter capacity of 11,000 L; multiply this by the number of
Black Berkey filters in your Berkey water filter.
2. Calculate your weekly usage. This is calculated by multiplying the number of times
you fill your Berkey in a week by its capacity.
3. Divide the capacity of the filters from step 1, by your weekly consumption from
step 2. The result is the number of weeks you can use the filters until lose their
effectiveness.
Example:
You fill your Big Berkey every day and are wondering when you should replace the
filters. Your Big Berkey contains 4 Big Berkey filters and 4 PF-2 filters.
1. 4 * 11,000 L = 44,000 L
2. 7 * 8.5L = 59.5L
3. 44,000 / 59.5 = 739 weeks
You calculate the PF-2 filters in the same way, you simply need to change the capacity.
1. 4 * 3,785L = 15.140 L
2. 7 * 8.5L = 59.5L
3. 15,140 / 59.5 = 254 weeks
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