Unity Lab Services Barnstead Pacific TII Concentrate Flow Adjustments Instruction Manual

Unity Lab Services Barnstead Pacific TII Concentrate Flow Adjustments

Concentrate Flow Adjustments – Definitions & Tools

• Concentrate – Water that is rejected by the membrane to Drain
• Permeate – Water that has been purified – Product Water which flows to the tank
• CCW – Counter Clock Wise (direction of concentrate pressure valve adjustment)
• CW – Clock Wise (direction of concentrate pressure valve adjustment)
• To adjust the Concentrate Flow, you will need the following:
  • Phillips Screwdrivers
  • Volumetric Flask or Cylinder
  • Stopwatch

Concentrate Flow

• After installation of any unit with an Reverse Osmosis Membrane, the Concentrate Flow MUST be adjusted.
• Due to possible changes in feed water temperature and pressure the concentrate flow must be checked and readjusted (if necessary) every 3 months to ensure proper water production, and to maximize life of membrane.
• Failure to adjust concentrate flow can result in membrane damage, or failure.

Measuring Concentrate Flow

• All Flows (concentrate & permeate) are listed in Liters Per Hour (LPH)
• The “36 Second” Rule:
  • To save time, you do not want to measure the concentrate (reject) flow rate for one hour. The 36 second rule is based off a simple mathematical formula :
  • 60 seconds x 60 minutes / 100 = 36 seconds
• When units are in production mode (making RO water) fill a Volumetric flask or cylinder with the concentrate for 36 seconds (using a stop watch).
• Measure the volume of water in the flask or cylinder and multiply by 100. Your results will be the concentrate flow in LPH.
  • Example:
  • 320ml of concentrate x 100 = 32LPH Concentrate Flow

Models Needing Concentrate Flow Adjustment

• Below are the models which need the Concentrate Flow adjusted during installation and approximately every 3 months.
• Barnstead Smart2Pure
• Barnstead Pacific TII
• Barnstead LabTower RO
• Barnstead Pacific RO
• Barnstead LabTower EDI
• Barnstead LabTower TII

Smart2Pure Concentrate Adjustment

• The unit must be producing water – measure the concentrate Flow
  

• If storage tank is full, you will need to drain enough water from the tank to lower the float. After a 3 minute delay, the unit will start producing water again.

• Locate the Concentrate Tubing
  Version:| Permeate Flow
  (Liters/Hour)| Concentrate Flow (Liters/Hour
  ---|---|---
  Smart2Pure 3| 3| 50*
  Smart2Pure 6| 6| 50
  Smart2Pure 12| 12| 60
  Check and readjust every 3 months**

• ¼” tubing going to drain

• Based on 17% recovery – could adjust the concentrate flow so more water is produced, especially if there are problems filling the tank. More water going to concentrate, lower back pressure on membrane to produce water.

• • Adjust concentrate flow to down to 15 is acceptable if necessary for permeate production.

• ** Change to 30 is acceptable if necessary for permeate production

• Following the 36 second rule, compare the concentrate flow against the chart above. If the flows are not correct, adjustment is necessary

Smart2Pure Concentrate Adjustment

• Remove Blue Cover and locate the Pressure Hold Valve (V2)
• Turn the concentrate valve CCW to increase or CW decrease concentrate flow in order to obtain the correct concentrate flow.
  
  

Pacific RO Concentrate Adjustment

• Locate the Concentrate tubing to measure the concentrate flow
• Following the 36 second rule, compare the concentrate flow against the chart below. If the flows are not correct, adjustment is necessary.
  Version:| Permeate Flow (Liters/Hour)| Concentrate Flow (Liters/Hour)
  ---|---|---
  Pacific RO 3| 3| 9
  Pacific RO 7| 7| 21
  Pacific RO 12| 12| 36
  Pacific RO 20| 20| 60
  Pacific RO 40| 40| 120
  Check & readjust every 6 months
• Remove the back panel and locate the Pressure Hold Valve (V2)
  • Located at the top of the Distribution Block
• Turn the concentrate valve CCW to increase the concentrate flow or CW to decrease the concentrate flow.
  

Pacific TII Concentrate Adjustment

• Locate the Concentrate tubing to measure the concentrate flow
• Following the 36 second rule, compare the concentrate flow against the chart below. If the flows are not correct, adjustment is necessary.
  

Version:| Permeate Flow (Liters/Hour)| Concentrate Flow (Liters/Hour)
---|---|---
Pacific TII/TII UV 3| 3| 9
Pacific TII/TII UV 7| 7| 21
Pacific TII/TII UV 12| 12| 36
Pacific TII/TII UV 20| 20| 60
Pacific TII/TII UV 40| 40| 120
Check & readjust every 6 months

• Remove the back panel and locate the Pressure Hold Valve (V2)
  • Located at the top of the Distribution Block
• Turn the concentrate valve CCW to increase the concentrate flow or CW decrease concentrate flow in order to obtain the correct concentrate flow.
  

Lab Tower EDI Concentrate Adjustment

• The LabTower EDI will need it’s RO Concentrate and EDI Product & Concentrate Flows adjusted.
  • Adjust the RO Concentrate Flow first
• Locate the Concentrate tubing to measure the concentrate flow
  • Concentrate Outlet is located in the front of the unit, below the blue cover
• You will also need to remove the front panel of the LabTower base and adjust the EDI Flow rates via adjustable flow meters (V8 & V9)
• Following the 36 second rule, compare the concentrate flow against the chart below. If the flows are not correct, adjustment is necessary.
  Version:| Permeate Flow (Liters/Hour)| Concentrate Flow (Liters/Hour)| Concentrate Flow EDI (Liters/Hour)
  ---|---|---|---
  Lab Tower EDI 15| 15| 60| 2
  Lab Tower EDI 30| 30| 90| 4
  Lab Tower EDI 45| 45| 135| 5
  Check & readjust every month
• Remove the back panel and locate the Pressure Hold Valve (V2)
  • Located at the top of the Distribution Block towards the front of the unit
• Turn the concentrate valve to increase or decrease concentrate flow in order to obtain the correct concentrate flow.
  

Lab Tower EDI Product & Concentrate Adjustment

• After adjusting the concentrate flow, the EDI Product & Concentrate Flows must be adjusted while the unit is running. Start with the Product Flow:
• The Product Flow should be adjusted to the model by the flow meter
  • LabTower EDI 15 = 15LPH
  • LabTower EDI 30 = 30LPH
  • LabTower EDI 45 = 45LPH
• The Concentrate Flow should be adjusted by the flow meter to ~ 10% of the Product
  • 15LPH – Concentrate setting:1.5-2LPH
  • 30LPH – Concentrate setting: 3LPH
  • 45LPH – Concentrate setting: 4.5-5LPH
    

LabTower RO Concentrate Adjustment

• Locate the Concentrate tubing to measure the concentrate flow
  • Concentrate Outlet is located on the front of the unit, below the blue cover
• Following the 36 second rule, compare the concentrate flow against the chart below. If the flows are not correct, adjustment is necessary.
  Version:| Permeate Flow (Liters/Hour)| Concentrate Flow (Liters/Hour)
  ---|---|---
  LabTower RO 20| 20| 60
  LabTower RO 40| 40| 120
  LabTower RO 60| 60| 180
  Check & readjust every month
• Remove the back panel and locate the Pressure Hold Valve (V2)
  • Located at the top of the Distribution Block
• Turn the concentrate valve CCW to increase the concentrate flow or CW decrease concentrate flow in order to obtain the correct concentrate flow.
  

LabTower TII Concentrate Adjustment

• Locate the Concentrate tubing to measure the concentrate flow
  • Concentrate Outlet is located on the front of the unit, below the blue cover
• Following the 36 second rule, compare the concentrate flow against the chart below. If the flows are not correct, adjustment is necessary.
  Version:| Permeate Flow (Liters/Hour)| Concentrate Flow (Liters/Hour)
  ---|---|---
  LabTower TII/TII UV 20| 20| 60
  LabTower TII/TII UV 40| 40| 120
  LabTower TII/TII UV 60| 60| 180
  Check & readjust every month
• Remove the back panel and locate the Pressure Hold Valve (V2)
  • Located at the top of the Distribution Block
• Turn the concentrate valve CCW to increase the concentrate flow or CW decrease concentrate flow in order to obtain the correct concentrate flow.
  

Revisions

permeate flow correction to 60lph
3| Changed concentrate flow adjustments based on updates in manuals for
LabTower (50153117 Rev A May 2020 and Pacific units (50152835) Rev A
May 2020) This is based on 25% concentrate flow recovery. )| August 2020
3| Suggestions for S2P concentrate adjustment could have more room for adjustment is based on 17% recovery per Charlie Serpa| August 2020

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