Watts HC-300, Manual

Page: 27 / 44

27
Replacing the Media
NOTICE
Ion exchange resin may need to be replaced periodically
due to physical breakdown caused by chlorine/chloramine
disinfectants, or fouling caused by certain metals such as
iron and manganese.
1. Mark the location of the mineral tanks on the floor incase they
need to be moved once all water, resin and gravel has been
removed. This will help with realignment of the plumbing after
media replacement. DO NOT attempt to move a mineral tank
that contains media and or water.
2. Open the bypass valve.
3. Close the inlet and outlet isolation valves for the mineral tank
needing media replacement
4. Locate “Manually Initiating a Regeneration” on page 19 of this
manual and follow the steps to place the system in the back-
wash position. This relieves any pressure inside the mineral
tank. Once the system cycles into the backwash position,
unplug the control valve from the power outlet to keep the
system in the backwash position.
5. Disconnect the inlet, outlet, and drain union plumbing fittings.
Then, if necessary for the removal of the control valve from
the mineral tank, remove the remaining plumbing from the
inlet, outlet and drain ports of the control valve.
6. Disconnect the meter cable from the from the from the meter
dome and from the P5 port located on the back of the control
valve controller. Store the meter cable in a safe location.
7. Disconnect the brine plumbing from the control valve’s brine
connection port.
8. Disconnect the power supply cable from P14 port located on
the back of the control valve controller.
9. If this is an HCTA-300 or HCP-300 series system disconnect
any interconnecting communication cables from the P1 and
P3 ports located on the back of the control valve controllers.
10. Remove the control valve from the mineral tank by loosening
and removing all flange bolt nuts. Remove flange bolts and
flange segments then lift up on control valve to disconnect it
from the tank flange. Store the control valve in a safe location.
WARNING
!
The weight of this control valve exceeds 115 pounds.
Do not attempt to install or remove control valve
alone. Team lifting and proper scaffolding should
be used. A 2" male NPT X Eye Bolt fitting has been
provided with each control valve. This assembly is
intended to be threaded into the control valve’s drain
port (1/2 turn past fully hand tight) and used as a lifting
point when removing control valve from tank flange.
11. Note the top of the distributor tube. It must be flush with the
top of the tank. If it is above the top of the tank by more than
1/2" the distributor tube may have become disconnected from
the distributor screen in the bottom of the mineral and must
be reconnected.
12. Obtain a length of 3/4" sch. 40 PVC that is the same height
as the mineral tank and a length of 1" clear braided poly-vinyl
hose. The hose must be long enough to reach the nearest
floor drain. (Both of these can be acquired at a local
hardware store).
13. Insert one end of the pipe inside the hose and the other end
of the pipe into the top of the mineral tank and down into
the resin media. Put the other end of the hose inside a water
permeable bag and locate the bag over the floor drain.
14. Insert a garden hose into the bag side of the poly-vinyl hose
to fill the hose and PVC pipe with water. Air will bubble out of
the tank. Once all the air is out of the hose and pipe, remove
the garden hose from the polyvinyl hose to establish a
siphon. The resin can then be siphoned into the bag. Use the
garden hose to maintain a full water level in the mineral tank
to. The bag end of the poly-vinyl hose must remain lower in
elevation then the end of the PVC pipe in the mineral tank
to maintain the siphon. The bag will retain the resin while the
water flows down the drain. Use caution not to allow resin to
enter the floor drain.
15. Continue to siphon resin until it is completely evacuated from
the mineral tank. Gravel will clogged the siphon hose and, if
it must be removed due to fouling, or to repair or replace a
damaged distributor tube and screen, must be evacuated by
other means.
16. If replacing gravel, inspect lower distributor screens for
damage and replace if necessary.
17. To add new media and reconnect control valve to mineral
tank follow General Installation steps 3-4K located on page 9
of this manual.
18. Reconnect inlet, outlet, and drain plumbing to the control
valve and tighten the plumbing union fittings on each of these
plumbing lines.
19. Reconnect brine tubing to brine connection port of control valve.
20. Reconnect meter cable to meter dome. Then reconnect the
other end of the meter cable to the P5 port located on the
back of the control valve controller.
21. If this is an HCTA-300 or HCP-300 series system reconnect
any interconnecting communication cables to the P1 and P3
ports located on the back of the control valve controllers.