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7500-C Greensand Filter Installation & Startup Guide
Assembly and Installation Instructions:
1. Wrap the top of distributor tube with electrical or duct tape so that no gravel or Greensand media
will go down the distributor tube when adding the media.
2. Add the filter gravel that came with your order. (Note: For the 10 cf systems, place the 2=50lb bags
of ¼" x ½" (Larger gravel) in the tank first, then add the 2 = 50 lb. bags of the 1/8" x ¼" (smaller
gravel) on top of that. You want the gravel to cover the bottom distributor screen before adding
the Greensand media.
3. Next add Greensand media. The tank should be approximately 2/3rds full of media when
complete, do not fill more than 2/3rds, even if there is some media left over.
4. Remove cap or tape from top of distributor tube. Be careful not to pull up distributor tube when
removing cap or tape.
5. Fill tank completely with water. This will allow the Greensand Filter media to settle and reduce the
need of purging the air out of the tank later.
6. Add a small amount of silicone grease to the inner O‐ring, where the distribution tube goes.
Lubricate the main tank O‐ring and screw on 7500 control valve carefully. Do not use pipe‐joint
compound, vegetable oil, Teflon tape, or Vaseline or other petroleum greases to lubricate tank
threads as this could damage the valve.
Page 8
www.cleanwaterstore.com
Rev 011821
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