Filter Replacement - abc SG1 Operation And Maintenance Manual

with 10 TDS leaving the RO membrane indicates 90%
rejection. When RO rejection rates drop below 80% it is
generally time to replace the RO membrane canister. As
stated above, bleeding the RO at the beginning of each use
and flushing the RO at the end of each use are essential
to achieving maximum RO lifespan. Trapped air can result
in the plastic overheating and pressure rating of the RO
housing dropping. Setting up your system out of direct
sunlight on hot days will also help protect the plastic RO
housing from heat damage.
The lifespan of your DI filter depends on the TDS of the
water entering the filter. As your RO membrane nears end
of life your DI filter will exhaust much faster. Periodically
check the TDS of the purified water leaving the DI filter with
the provided handheld meter. When the TDS levels reach
unacceptable levels for your application (abc suggests
10ppm or less for window cleaning and 40ppm or less
for cleaning opaque surfaces) the DI filter is completely
exhausted and should be replaced. See troubleshooting
section below for more information on high TDS levels
coming from the system.

12. Filter Replacement

Learn how to tell which filters to change:
www.window-cleaning-supply.com/FilterTime
Learn how to tchanges your filters:
www.window-cleaning-supply.com/SGChange
6 - S2 Pure Water System Operation and Maintenance Manual
Carbon/Sediment Filter
1. Unscrew brass fitting on top of the Carbon/Sediment
filter (P/N WF2CSC-21).
2. Unscrew the bolt at the top of the Carbon/Sediment
filter cartridge.
3. Remove the Carbon/Sediment filter by first pulling top
of the filter away from the frame removing it from top
bolt. Next, lift up to remove the filter from the clip at
the bottom. Discard used filter.
4. Slide the female end of the new filter into the clip at
the bottom of the frame so that the female inlet fitting
is pointed forward. Swing the top so that the bolt is
inserted in the hole on the cap of the filter labeled
SG1&2.
5. Tighten the bolt to secure the filter (checking to make
sure that the filter is seated in the bottom clip).
6. Attach your 24" connection hose to the new Carbon/
Sediment filter. Fittings should be tight enough to
avoid leaks, but overtightening could result in damage
to the brass fittings.
DI Filter
1. Unscrew brass fitting from the bottom of the
Deionization (DI) filter (P/N WF2CDI-21) and any
hoses attached to the top of the filter cartridge.
2. Unscrew the bolt at the top of the DI filter cartridge.
3. Remove the DI filter by first pulling the top of the
filter away from the frame pulling it off of the bolt at
the top. Next, lift up to remove the filter from the clip
at the bottom. Discard used filter.
4. Slide the bottom of the new filter into the clip at the
bottom of the frame and swing the top so that the bolt
is inserted in the hole on the top cap of the filter.
5. Tighten the bolt to secure the filter (checking to make
sure that the filter is seated in the bottom clip).
6. Attach your brass fitting to the bottom DI filter. Fittings
should be tight enough to avoid leaks, but
overtightening could result in damage to the brass
fittings.
RO Membrane
1. Remove the black bypass hose from the RO membrane
by pushing down on the retaining ring of the port while
pulling on the tubing in the opposite direction.
2. Unscrew the pure water outlet on the bottom of the
RO membrane canister and the male end of the 24"
connection hose from the top of the RO membrane
(P/N WF3CRO-40).
3. Using a 7/16 socket, unscrew the single lag bolt holding
both sets of saddle clamp halves together to release
the membrane.