Sounder Replacement Procedure

The Sounder replacement procedure takes approximately 15 minutes and will require: – replacement sounder (gray microphone cable lengths will vary depending on well configuration)

• a small screwdriver (⅛” or 3mm flathead)
• your padlock combination if you use one
• if using a solar or AC power source you will need electrical tape.
• if your Sensor is a non-Telemetry Unit, a laptop PC and USB-to-Sensor cable will be needed.

Step 1: De-power Sensor‍

Use a small screwdriver to disconnect battery, solar or AC power leads and CT wires, if installed. A battery powered Sensor can remain powered during this procedure, but take care not to drop the battery out of its slot. If using solar or AC power source.

Tape solar or AC adapter power wires so they are NOT touching one another and remove wires from the bottom port.

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Step 2: Remove the Sensor from Wellhead

‍Unscrew Sensor counterclockwise by holding the base and rotating the sounder as shown. Make sure to leave the threaded wellcap interface installed on the wellcap, not the sounder.

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Step 3: Unscrew the Sounder from Sensor

‍Unplug the Sounder interface from the terminal labeled “Sensor” by holding wires at the base of the interface firmly and pulling directly outwards. Hold the Sensor steady and turn Sounder left

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Step 4: Install the New SP4 Sounder

‍Insert the new Sounder interface through the Sounder hole.Thread the hex-nut onto the Sounder’s threads, turn to the right 3 turns.Seat the hex-nut in the housing cavity and turn the Sounder to tighten until snug.Plug the Sounder interface into the terminal labeled “Sensor, with the red wire on top.

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Step 5: Install the Sensor Back on the Wellhead‍

Carefully feed SP4 through the ½” access port
Twist clockwise, securely attaching the Sensor to the threaded interface

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Step 6: Repower Sensor‍

If using solar or AC line power, thread wires through the port. Then remove the tape and connect wires to the Sensor terminal. Red (positive) on top, black (negative) beneath.
Wait 60 seconds after repowering

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Step 7: If Sensor is a Telemetry Unit, Perform a Sensor Reset‍

• Press and hold “+” button for 15 seconds, a green LED should flash slowly, let LED flash twice. Wait 3 seconds
• Repeat press and hold “+” button for 15 seconds, a green LED should flash slowly, let LED flash twice
• After you release the “+” button from the repeat of step a., the green LED will flash once more confirming the reset. Wait 30 seconds
• Press and hold the ‘+’ button for 2 seconds, or until the green LED illuminates then release
• A small thump should be heard from the Sounder. It is important to hear the small thump since this is the recognition that the Sensor has gotten time and association from the Gateway.
• Force 5 readings, waiting 30 seconds in between readings and confirming that you hear a small thump with each reading
• Sensor Reset is complete, place the cap back on the Sensor and lock
• Check the “Recent Telemetry” section of the http://my.wellntel.com dashboard confirming Sensor communications