BWS350 System Installation, Operation & Maintenance 15
Operating Parameters
Ratio Oper
Product/ Temp PRODUCT FLOW RATE REJECT FLOW RATE
Reject (°F) (gal/day) (gpm) (L/day) (lpm) (gal/day) (gpm) (L/day) (lpm)
1:2 50 185 0.13 701 0.49
1:2 64 271 0.19 1027 0.71
1:2 77 350 0.24 1325 0.92 700 0.48 2650 1.84
1:2 84 380 0.26 1440 1.00
• The ow rates above are for 60 psi feed pressure.
• To convert gallons per minute (gpm) to ounces per minute, multiply gpm by 128.
• To convert gallons per minute (gpm) to milliliters per minute, multiply gpm by 3785.
small (1/2 turn) adjustments. After making an
adjustment, measure the reject and product water ow
rates. Make additional adjustments until the desired
Product/Reject Ratio is achieved, then tighten the lock-
nut.
Use the “Operating Parameters” table above as a
guideline for safe operating ow rates and ratios. This
table provides an indication as to how Feed Water
temperature affects the Product Water output of the
system.
Measuring Product Flow Rate
Connect a piece of 3/8” tubing to the Sample Port on
the right side of the Processor and route it to a bucket
or drain. If the tank is full, turn the Sample Port valve
to the sample position and allow about 20 gallons to
drain out of the storage tank, then close the Sample
Port valve. Close the Buffer Tank Valve and turn the
Tank Inlet Divert Valve to the divert position (Up). Open
the Sample Port valve. While the system is operating
in normal mode (Emergency Bypass Valve in Service
position), use a graduated cylinder or other measuring
vessel to collect and measure the amount of water that
is produced (from the tubing connected to the Sample
Port) in 60 seconds. To convert ounces per minute to
gallons per day, multiply ounces/mn by 11.25.
When nished, close the Sample Port valve, turn the
Tank Inlet Divert Valve to the Down position, and open
the Buffer Tank Valve.
Measuring Reject Flow Rate
Access the Reject Drain Line and perform the same
procedure described in “measuring product ow rate.”
Limitations on Adjustment of Reject Flow Rate
The factory sets the Product/Reject Ratio to 1:2 with
the Blending Valve closed based on 60 psi Operating
Pressure and 77°F which is typically 919 ml per minute
+/- 15%. Never close Reject Flow Control Valve nor
limit Reject ow to less than Permeate ow!
The AMS-QT membrane is rated for a target daily
output of 350 gallons per day of Product Water
when the feed water temperature is 77°F and the
operating pressure is 60 psi. Do not exceed the
rated output of 350 gpd/14.58 gph/0.243 gpm (1,325
liters per day/55.125 liters per hour/919 milliliters
per minute). Always keep in mind that feed water
temperature and pressure will affect the Product
Water output. Depending on feed water pressure
and temperature it may not be possible to achieve
the rated production of 350 gpd.
Blending Impact on Product/Reject Ratio
Once the Blending Valve is opened to blend Filtered
Water with the RO Product Water the combined
Optimized Water ow rate will be greater than the
Product Flow Rate. For example, if the Feed Water
TDS is 300 ppm, the AMS-QT product water TDS will
be 9 -15 ppm. If your desired Optimized Water TDS
is 75 ppm, then you will be adding approximately
13% of the Filtered Water to your RO product water,
increasing your Optimized Water ow to a 42%
recovery.
In this example your daily Optimized Water Production
is approximately 441 gpd at 77°F Feed Water
temperature and 60 psi Operating Pressure.
To Next Page
Loading...
