Star Water Systems Upflow filter - Manual (Page 3)

3
G. REPLACEMENT OF GRAVEL AND
CARBON (S07UF1016BW ONLY)
The carbon mineral and gravel inside the
mineral tank needs to be replaced
approximately every three years. (The
plumbing that is hooked into the manifold
does not need to be disconnected for this
replacement.) To replace the old carbon and
gravel with new, proceed as follows:
1. Close the main water supply shut-off
valve.
2. Open nearest water faucet to relieve
pressure and drain plumbing lines.
3. Unscrew and remove the mineral tank
plug located near the top of the tank,
underneath the manifold valve.
4. Using a shop vac, place a tubing
extension into the mineral tank dome hole
and remove the old carbon and gravel in
the tank.
5. Using a funnel pour gravel into mineral
tank first, then pour carbon in. Clean hole
opening in tank and replace mineral tank
plug. Follow Section F: “STARTING THE
UNIT” instructions to remove initial
carbon fines.
H. REPLENISHMENT OF CALCITE
(UN10 & UN20 ONLY)
1. Follow steps 1 - 3 in Section G
2. Using a funnel pour calcite into mineral
tank . Replace mineral tank plug. Follow
Section F: “STARTING THE UNIT”
instructions