5900-BT Greensand Filter Installation & Maintenance Guide
Page 24
www.cleanwaterstore.com
Rev 112918
7.
Flush out all Greensand Media and gravel and discard to landfill or trash. Observe all
local laws and codes, generally it is acceptable to dispose of the media in a landfill.
8.
Rinse out filter tank until clean.
9.
Add a ½ cup of household bleach and a few gallons of water and rinse inside of tank
10.
Rinse out filter tank until chlorine is gone.
11.
Add gravel and new Greensand media and re-start up system following original
directions in this manual.
System Not Backwashing Adequately
The other main problem that may occur is if you do not have enough backwash flow rate to properly
clean the water Greensand Filter. You can verify the backwash flow rate by running the drain line into a
bucket and timing it when the 5900-BT is in Cycle 1 or backwash.
A 1.0 or 1.5 cubic foot system should have 2.0 gallons per minute and a 2.5 cubic foot system should
have 4.0 gallons per minute of backwash.
Pot Perm Tank Not Filling with Enough Water
Sometimes if the pot perm tank is not filling adequately, it is possible that the float assembly in the tank
is set too low. You would want the float to be several inches above the air check valve inside the tank.
This will allow for enough water to be added to the tank before shutting the brine fill cycle.
If necessary, pull the float assembly rod up to the appropriate height, and cut the rod at that height,
leaving while keeping the rubber washers the adequate space to hold the float in place.
Backwash Flow Rate
One problem that may occur is if you do not have enough backwash flow rate to properly clean
the filter.
You can verify the backwash flow rate by running the drain line into a bucket and timing it when
the 5900-BT is in Cycle 1 or backwash.
A 1.0 or 1.5 cubic foot system should have 5 gallons per minute and a 2.5 cubic foot system
should have 10 gallons per minute of backwash.
In some cases, the 5900-BT may not be programmed correctly. See the 5900-BT service manual
for instructions on how to access the master programming.
