3M 6239302 Manual de instrucciones de instalación y funcionamiento - Página 14
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3. ERROR SHUT DOWN If the flow switch stays open (no flow) after the 4th repeat the unit will shut down in "ERROR SHUT DOWN".
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4.
The unit can/will be reset back to normal operation during the toggle mode by:
1. Unplugging the unit or pressing the reset button on the top of the PLC box
2. Unit cycles off on full tank
Operating Pressure Adjustment Instructions
1. Unplug the ScaleGard
™
2. Remove the shroud from the unit. (See diagram)
3. Close the storage tank valve. Open tank line sample vale to relieve system pressure. Connect a length of tubing from the tank line sample
valve with discharge to drain.
4. Remove the prefilter cartridge from the left cartridge head on the manifold. (See diagram)
5. Install bypass plug (3M part # 6217402) into the left cartridge head on the manifold. (Note: Operating pressure cannot be set/adjusted with
used pre-filter cartridges)
6. Close the blend line shut off valve (see Figure 5 #1).
7. Remove the pressure adjustment lock nut on the water pump to access the set screw (see diagram below).
8. Plug in the ScaleGard HP, this will start the unit.
9. Operate the unit for 1 minute (minimum) before adjusting the operating pressure.
10. Use the set screw to adjust the operating pressure to 110-120 psi. (displayed on the left gauge).
11. Use an appropriate tool to make this adjustment using the screw slot. Turn the screw in to increase the operating pressure out to decrease the
operating pressure. Note: A small amount of water may leak around the set screw, this is normal.
12. When the operating pressure is set, replace the lock nut and recheck the operating pressure, readjust if necessary. (Do not over tighten lock
nut). Check for water leaks, repair as necessary.
13. Unplug the SGHP RO unit.
14. Remove the bypass plug and reinstall the pre filter cartridge.
15. Close the tank line sample valve. Remove tubing.
16. Open the blend line shut off valve.
17. Replace the shroud on the unit.
18. Plug in the SGHP RO unit Note: if the operating pressure is lower than the adjusted pressure, DO NOT READJUST. The reduced pressure is due
to a restriction in the prefilter cartridge. It is recommended to change the prefilter cartridge.
The motor / pump shut down
5 second delay inlet solenoid valve closes
ERROR light on solid red.
Unit will have to manually be restarted.
HP Reverse Osmosis Unit.
Lock Nut/set screw
Operating Pressure
Gauge
Shroud
Blend Valve Line
Pre-Filter
14
Bypass Plug (PN-6217402)