7
Figure 5 - Conductivity Probe Installation
1 Drill the enclosure as needed and install liquid-
tight fittings for the wiring.
NOTE:
The Controller can be ordered
pre-drilled or with fittings installed, or with
fittings and wiring installed. Contact Nelsen
Corporation for details.
2 Mount the enclosure in the desired location on
the RO system.
3 Bring the wires from the peripheral devices
into the enclosure and connect them to the
appropriate terminals. (See Figure 1, Figure 3 and
Figure 4.)
4 Install the conductivity cell in the permeate line.
(See Figure 5 for conductivity cell installation
instructions.)
7 Connect the conductivity cell to the terminals on
the CPU Board. (See Figure 3)
8 Provide power to the RO system.
9 Press the System On/Off switch to turn the
system ON.
10 Program Mode 2 is default (See Table 2) which is
a general purpose setting, without a flush valve.
NOTE:
The Program Settings can be
customized to suit the specific needs
of an OEM and pre-programmed at the
factory with your settings. Contact Nelsen
Corporation for details.
11 Make any other changes you want to the
settings. Press System On/Off to save your
changes.
12 The controller is now ready for service.
NOTE:
YOU MUST REMOVE THE JUMPER
WIRE FROM E23 TO E24
if using a single
point High Level RO water shut off float
switch control and connect the float switch
wires to terminals E23 and E24 (See Fig. 4).
If you are using a piggyback float plug leave
the jumper wire in place.
Installation
Install the Conductivity Probe in the “Run”
of a Tee or equivalent location. Orient the
probe so that air can not become trapped in
the area near the probe.
FL
OW
FLOW
Conductivity
Probe
