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Tri-sensor Assembly
Flow Paddle
Salt Sensor Blades
Temperature
Sensor Post
Tri-sensor
O-Ring
Indicator of
Flow Direction
6.2 REMOVING / INSPECTING / CLEANING TRI-SENSOR
6.2.1
Tri-sensor Assembly Overview
The Tri-sensor Assembly is used to measure water flow, salt level, and water temperature.
Note: The use of high strength magnet devices in the close proximity of the Tri-sensor can
cause the flow switch to function incorrectly.
When the water flow reaches a minimum
flow rate of 15 gpm (76 L/min), the flow
paddle magnet closes a micro-switch
monitored by the Digital Nano/Nano+.
The CoPilot
®
Ozone manifold requires a
minimum flow of 25 gpm (95 L/min).
The Digital Nano/Nano+ uses dedicated
salt sensor blades to measure the level
of salt in the water.
The Digital Nano/Nano+ uses the
temperature sensor to determine water
temperature.
This
measurement
is
required for the Patented Automatic
Temperature Compensation feature to
automatically adjust chlorine output as water temperature varies. Less chlorine is needed
in cold water, so chlorine output is automatically reduced as water temperature drops
(avoiding excess chlorine production). Conversely, more chlorine is needed in warmer
water, and production is automatically adjusted higher as water temperature increases.
Please note - The Tri-sensor normally does not require maintenance or cleaning.
6.2.2
Inspect Tri-sensor
1) Disconnect the Tri-sensor cable from the power center.
2) Remove the two (2) screws retaining the Tri-sensor in the Tee joint of the Manifold.
Note the orientation of the Directional of Flow Tab. The Tri-sensor must be installed in
the same orientation when it is reinstalled or replaced.
3) The Tri-sensor can now be pulled out of the Tee.
CAUTION:
Failure to heed the following may result in equipment damage.
The Tri-sensor should not be removed from manifold at an angle, or the flow paddle
and/or flow post may be damaged.
Firmly grip the Tri-sensor assembly (this is typically done with a large pair of channel lock
pliers).
Twist the Tri-sensor back-and-forth while simultaneously pulling the Tri-sensor straight
out of the Tee joint.
4) Check the Tri-sensor assembly for any damage to the plastic housing and replace if needed.
5) Inspect the following on the flow switch:
Verify the thin metallic paddle is straight and free from erosion.
Verify the plastic post is straight and free of cracks. (Do not twist or bend the paddle or
the plastic post.)
6) Inspect the two salt sensor blades. The blades should not have any mineral deposits (scale)
or other debris on them.
Figure 5
