Watts R4X40-3 - Manual (Page 10)

D. STARTUP
1. Verify that the pretreatment equipment is installed and working properly. Verify that no
free chlorine is present in the feed water.
2. Verify that the on / off switch is in the off position.
3. Verify that a filter cartridge is installed in the prefilter housing.
4. Open the reject control valve completely (Figure # 1 item C) by turning it
counterclockwise.
5. Close the reject recycle control valve (Figure # 1 item D) completely by turning it
clockwise.
6. Open the feed water shutoff valve installed in step III-B-1 above.
7. Move the controller on/off switch to the on position.
8. Allow the unit to run for 15 – 30 minutes to flush the preservative from the membrane(s).
9. Adjust the reject control valves (Figure # 1 items C & D) until the desired flows are
achieved. Closing the reject valve increases the product flow and decreases the reject
flow. Opening the reject recycle valve decreases both the reject and product flow. See
the flow rate guidelines and temperature correction table in the appendix to determine the
flow rates for different operating temperatures.
10. Allow the product water to flow to drain for 30 minutes.
11. Turn off the system and connect the product line to the point of use. The product water
line should never be restricted. Membrane and/or system damage may occur if the
product line is blocked.
12. Restart the system and record the initial operating data using the log sheet.
E. CONTROL FUNCTION
1. When the on / off switch is in the on position, the inlet valve opens and the pump runs. If
the water pressure feeding the pump drops below 10 psi for more than 5 seconds, the
pump will turn off and the amber light on the control box will turn on. The controller
will automatically reset after 30 minutes and the pump will turn back on. Cycle the on /
off switch to manually reset a low-pressure shutdown.
2. Quality Meter – The quality meter measures the feed water and product water total
dissolved solids (TDS) in parts per million (PPM). The lower the TDS the more pure the
water is. To check the TDS press the power button, then pres either the IN or OUT
button. The IN button checks the feed water TDS and the OUT button checks the
product water TDS. The meter will automatically turn it self off after a few seconds.
The quality meter is powered by two AAA batteries. To replace the batteries, lift the
meter out of the bracket and remove the back cover.