BWS350 System Installation, Operation & Maintenance
16
Normally, the most frequent routine maintenance
required on the system is periodic replacement of
the carbon/sediment pre-filters and the optional post-
treatment cartridge. The CTO-Q cartridges should
be changed every 3-6 months depending on water
usage. In areas with high levels of sediment and other
contaminants the CTO-Q cartridges may require more
frequent changes.
Pre-Filter change procedure
1. Unplug the RP Pump power cord.
2. Either close the Water Supply Valve (shutting off
all water flow), or put the Emergency Bypass Valve
(on the Processor) in the System Bypass position
(allowing untreated water to continue to flow to the
equipment).
3. Wait a moment for system pressure to drain off.
4. Once the system pressure has been relieved,
remove the two CTO-Q cartridges by turning a
quarter-turn to the left and pulling down on the
cartridge.
5. Install the new CTO-Q cartridges into the QT
heads by aligning the notches and pushing up,
then turn a quarter-turn to the right.
6. Install a piece of 3/8” tubing in the Processor
Sample Port valve, open the Sample Port, and
direct to a bucket or drain.
7. Turn the Tank Inlet Divert Valve to the Bypass
Mode (Handle Pointing UP).
8. Open the Water Supply Valve and put the
Emergency Bypass Valve in the “SERVICE”
position, allowing water to run into the new Pre-
Filter cartridges and purge air through the system
and out the Sample/Flush Port to drain.
9. Once the air has been purged and filters flushed,
close the Sample Port valve and return the Tank
Inlet Divert Valve to the Normal position (handle
horizontal or down).
10. Check for leaks.
11. Plug in the RP Pump power cord.
Optional Post-treatment cartridge change
procedure
(if applicable)
1. Close the ball valve at the inlet to the Post-
Treatment assembly.
2. Remove the existing cartridge and discard.
3. Install the new cartridge.
4. Open the ball valve and the RP pump should
actuate filling the housing with water.
AMS-QT Replacement
The AMS-QT membrane is a high-efficiency, low-
fouling reverse osmosis membrane that will provide
product water with >97% rejection of the Feed Water.
The life of the membrane will vary depending on Feed
Water quality, usage, and Pre-Filter maintenance.
Typical membrane life is 12 to 18 months, but with rou-
tine scheduled Pre-Filter replacement, and no adverse
Feed Water conditions, the AMS-QT membrane may
last 2-5 years.
1. Unplug the RP Pump power cord.
2. Either close the Water Supply Valve (shutting off
all water flow), or put the Emergency Bypass Valve
(on the Processor) in the System Bypass position
(allowing untreated water to continue to flow to the
equipment).
3. Place a bucket or other similar catch basin under
the AMS-QT. Remove the black reject line from
the push-to-connect elbow on the bottom of the
membrane. (Refer to “Push-to-Connect Fittings”
on page 20.) Allow the membrane and reject line
to drain into the bucket.
4. Remove the AMS-QT cartridge from the head by
turning the cartridge a quarter-turn to the left and
pulling down on the cartridge.
5. With a wrench, remove the push-to-connect elbow
and stem adapter attached to the bottom of the
AMS-QT cartridge. Remove the residual Tef-
Routine Maintenance
CTO-Q Pre-Filters
PN: 300-05830
Change Every 3 to 6 months
Emergency Bypass V
alve
Sample Port
-
For T
esting,
Priming and Sampling ONL
Y.
AMS-QT Cartridge -
PN: 204-53040
MA-QT15 PN:300-05855
Change Every 6 months
