Pro-OX 7800 Installation & Startup Guide
Page 10
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Rev 120214
23.
Press and hold the Manual Regen button for three seconds which will start a manual backwash,
watch the display and wait until it starts counting down. Now unplug the power supply and
proceed to step 24.
24.
Now you can slowly turn the bypass valve to the service position.
You do NOT remove the red
clips on the bypass knobs in order to turn the bypass valves from the bypass to the service
position.
First open the Inlet Side of the bypass valve. Second slowly open the Outlet Side of the
bypass until it is in the full service position. The 7800 bypass valve knobs are a little stiff, so you
can use Allen wrench placed in the holes to turn the knobs. Turn the bypass valve knobs in the
correct direction which is counter-clockwise as you face the bypass valve knobs.
25.
There should be no Birm media coming out of the drain line, but the water will be black or dirty
looking. At this point the Birm filter will be in a backwash cycle. The backwash takes 10 minutes.
If the water slows down or stops during the first 10 minutes of backwash, press the Manual
Regen button to move the 7800 control to the next cycle, the Rinse cycle. Then repeat the
backwash and rinse after the rinse cycle is done, by pressing and holding the Manual Regen
button for three seconds again. If you have high water pressure you may need to turn on the
water slowly to the Birm filter at first to prevent some Birm fines from coming out the
backwash. However it is normal for some small amount of fines to come out during the
backwash, although you do not want to see a large amount of media coming out, which would
mean you have very high water pressure, or the drain flow control for the 7800 is missing.
26.
If possible verify that the backwash flow rate. You can easily run the drain hose to a bucket and
using a watch verify the flow rate in gallons per minute. For example, if the backwash fills a 5
gallon bucket in 30 seconds, you have 10 gallons per minute or 10 GPM.
An adequate
backwash is critical to properly clean the Birm media and prevent it from cementing together.
1.0 Cubic Foot Model: 5 GPM recommended
1.5 Cubic Foot Model: 5 GPM recommended
2.0 Cubic Foot Model: 7 GPM recommended
2.5 Cubic Foot Model: 10 GPM recommended
27.
The next cycle is the Rinse cycle and this runs for 6 to 8 minutes. After the backwash, the 7800
will automatically advance to the rinse cycle.
28.
After the Birm filter has gone through the backwash and rinse, press and hold the Manual Regen
button for three seconds and repeat the backwash and rinse. This is the same procedure that
needs to be done each time you add Birm media in the future, that is, the Birm media must be
thoroughly backwashed and rinsed.
