31
7.3
CONDUCTIVITY CELL REPLACEMENT
1.
Prepare the RO per section 6.2.
2.
Open the RO controller by loosening the screws on the face of the controller.
3.
Loosen the screws on the terminal strip for the appropriate conductivity cell (the inlet
goes to the expander board while the product goes to the main board. See Figure
5.2)
4.
Disconnect the conductivity sensor wiring and remove from the controller.
5.
Remove the appropriate conductivity cell by turning it counter clockwise.
6.
Apply pipe thread sealant to the replacement cell and thread into the connection.
7.
Route the new cells wiring back to the controller.
8.
Secure the wiring into the terminal block ensuring that the colors of the wires match
the listing on the terminal block.
9.
Return the RO to service.
10.
Check for leaks around the cell that was replaced.
11.
Calibrate the conductivity cell per the instructions in Section 5.3.
7.4
INLET SOLENOID VALVE TEST / REPLACEMENT
1.
With the RO+ Off, turn the incoming tap water supply on. If there is water flowing to
the drain, the inlet solenoid may be bad. Proceed to Step 3.
2.
Turn the RO+ On (with the incoming tap water supply on). If there is no flow to the
drain, the inlet solenoid or wiring harness may be bad. Proceed to Step 3.
3.
Prepare the RO per section 6.2.
4.
Disconnect and remove valve wiring from control box.
5.
Loosen and remove bolts and nuts from flanges secured to the valve.
6.
Note the orientation of the valve in regards to the flow direction.
7.
Slid valve out from header.
8.
Slid new valve between both flanges.
9.
Install the bolts and nuts to secure valve to header.
Summary of Contents for 00HRO64800
Page 6: ...5 SECTION 3 COMPONENTS AND SCHEMATICS 3 1 HRO COMPONENT IDENTIFICATION...
Page 8: ...7 3 2 HRO FLOW DIAGRAM...
Page 9: ...8 3 3 HRO ELECTRICAL SCHEMATIC...
Page 19: ...18 FIGURE 5 2...
Page 20: ...19 FIGURE 5 3...
Page 37: ...36 9 2 SPARE PARTS LIST...