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18
LM900006 Rev 0_3
Maintenance
Step Nine
GENERAL:
The Smart Trak™ with Compact Junction Box requires no periodic maintenance except cleaning as required.
It is the responsibility of the user to determine the appropriate maintenance schedule, based on the specific
characteristics of the application liquids.
CLEANING PROCEDURE:
1. Power:
Make Sure that all power to the sensor, controller and/or power supply is completely
disconnected.
2. Sensor
Removal:
Make sure that the tank is in a state where it is safe to remove the sensors.
Carefully, remove the Smart Trak™ from the installation.
3. Cleaning the Sensor:
Use a soft bristle brush and mild detergent, carefully wash the Smart Trak™.
Do not use harsh abrasives such as steel wool or sandpaper, which might damage the surface sensor.
Do not use incompatible solvents which may damage the sensor's PP or Ryton plastic body.
4. Sensor
Installation:
Follow the appropriate steps of installation as outlined in the installation section of
this manual.
CONTROLLER LOGIC:
1. Power
LED:
Make sure the Green power LED is On when power is supplied to the controller.
2. Input
LED(s):
The input LED(s) on the controller will be Amber when the switch(es) is/are wet and Off
when the switch(es) is/are dry.
Note: see Step 5 regarding reed switches.
If the LED's are not
switching the input LED, test the level switch.
3. Relays:
When both inputs are wet (Amber LED's On), the relay will be energized (Red LED On). After
that, if one switch becomes dry, the relay will remain energized. Only when both switches are dry (both
amber LED's Off) will the controller de-energize the relay. The relay will not energize again until both
switches are wet. See the Relay Latch Logic Chart below for further explanation.
CURRENT TEST (ULTRASONIC
AND VIBRATION ONLY):
Used to verify if the sensor is
indicating a wet or dry condition.
This test uses only two wires (Red
and Black). The sensor draws 5
mA (ultrasonic) or 8 mA (vibration)
when it is dry, and 22 mA when
wet. The White and Green wires
are not used.
Using a Separate Power Supply
Using Controller’s Power Supply
CONTACT TEST
(BUOYANCY ONLY):
Used to verify if the reed switch is
switching between dry (open) and
wet (closed). Check for continuity
across Black and White (open for
dry and closed for wet). Checking
across Black and Red will result in
a closed when dry and open when
wet condition.
Normally Open Switch
Normally Closed Switch