WP440L-Series Reverse Osmosis System
Installation Instructions and User Manual
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Initial System Start-Up
Refer to the P&ID on page 35 for valve and gauge locations.
Note:
Pump throttle valve CV-1 is only available on systems with Sta-Rite Multistage pumps.
Systems with Procon pumps do not have CV-1.
Illustration 10 - Pump Throttle Valve CV-1
1. Direct the product water tubing to drain.
2. Open the feed water supply valve.
3. Open the system pressure (pump throttle) control valve (CV-1) fully counterclockwise (if applicable). Open the
concentrate control valve (CV-2) fully counterclockwise. Close the recycle valve (CV-3).
4. Press the power button to turn the system on. Note inlet water pressure must be at least 40 psi.
CAUTION: If the pump chatters loudly, it is starving for water (cavitating). Turn the unit OFF
immediately to prevent pump damage. Correct the low-pressure condition before proceeding.
5.
If incoming pressure is too high, an inlet pressure regulator (not included) may be installed. This should be set at
40 psi.
6. Some fittings may have loosened during shipment. Check for leaks at all tube fittings and threaded joints.
7. Allow the unit to run for at least 30 minutes to flush the preservative solution from the system.
8. Once the preservative solution has been flushed from the system, shut down the system by pressing the ‘power’
button and redirect the permeate flow to desired product storage tank or down-stream equipment.
9. Restart system.
10. Adjust the Throttle Valve (CV-1) to get the specified permeate flow (if applicable).
11. Adjust the Control Valve (CV-2) and Recycle Valve (CV-3) until the specified permeate flow and recycle flow are
obtained. It may be necessary to readjust the Throttle Valve (CV-1).
Illustration 11 - Control and Recycle Valve
