Solinst 101 Operating and safety instructions

Water Level Meter Complete Electronics Replacement
High Quality Groundwater and Surface Water Monitoring Instrumentation
(Page 1 of 2)
(108429)
Model 101/102
Replacing all Electronics
Complete Electronics Kit (#103558) Includes:
• Sensitivity Switch and Knob
• Test Button
• Red LED Indicator Light with Terminals
• Battery Tray and 2 Phillips Screws
• Circuit Board Assembly with Sonalert
• 9V Alkaline battery
1. Remove the battery from the Meter. Undo the three screws
holding the faceplate to the hub.
2. Remove the faceplate and disconnect the Molex connector
connecting the circuit board to the tape.
3. From the front of the faceplate, unscrew the test button and
push it out of the faceplate.
4. Push the light out of the faceplate.
5. Use the Phillips screwdriver to undo the two screws holding
the battery tray to the faceplate. Cut the red and black wires
from the back of the battery tray. Remove the battery tray.
6. Unscrew the Sonalert retaining ring from the front of
the faceplate and remove the Sonalert and Circuit Board
Assembly.
7. Use the small flat screwdriver to unscrew the small brass
screw on the side of the sensitivity knob. Remove the
sensitivity knob. Use the pliers to unscrew the nut holding
the sensitivity switch and remove the switch from the
faceplate.
8. Insert the new battery tray through the faceplate. Use the
two screws to secure the tray to the faceplate.
9. Put the new Sonalert through the faceplate, and secure it
using the retaining ring.
10.Install the new sensitivity switch, light, and test button in the
faceplate.
11.Solder the wires from the new circuit board assembly to
the correct connections on the test button, battery tray
and sensitivity switch. Use steps 12 - 17, along with the
diagram above, as a reference.
12.The red wire labeled B+ on the circuit board is connected to
the positive terminal of the battery tray.
13.The other two red wires on the right side of the circuit board
are connected to the first two connections on the sensitivity
switch.
14.The black wire on the right side of the circuit board is
connected to the third terminal on the sensitivity switch.
15.The black wire furthest left on the circuit board is attached
to the terminal on the top of the sensitivity switch.
Note: There will be a black wire connecting the battery to the top of
the sensitivity switch. The new circuit board assembly comes
with a separate replacement wire.
16.The other black wire connected to the top of the sensitivity
switch is connected to the negative terminal on the battery
tray.
17.The red wire closest to the center of the circuit board is
connected to the positive terminal of the test button, and the
black wire labeled B on the circuit board is connected to the
negative terminal on the test button.
18.Place the new circuit board assembly over the connections
to the Sonalert and attach the wires from the light to the
Sonalert using the two screws through the circuit board.
19.Connect the Molex connector from the new circuit board to
connector on the tape. Install the new battery.
20.With the Probe in a glass of tap water, turn the Water Level
Meter to the ‘ON’ position. If the connections are correct
the buzzer and light will activate. If the buzzer or light do
not activate, check the polarity of the battery and Molex
connector, and the soldered connections.
21.Reattach the faceplate to the reel using the three screws.
Note: These instructions explain how to replace each electronic
component, either all at once or separately as required.
Overleaf are instructions to replace each component separately.
Tools and Materials Needed
1. Required Repair Kit
2. Small Flat Screwdriver (3 mm (1/10")
3. 10 mm (3/8") Wrench
4. Wire Cutters
5. Wire Strippers
6. Solder Wire with Flux
7. Soldering Iron
Molex
Connector
Test Button
Sensitivity
Switch
Light
Circuit Board Showing Wire Connections
Sonalert
Battery
Tray
Back of
Circuit Board
(wires connected
to other side) B
B+

Printed in Canada
November 21, 2012
(#108429)
(Page 2 of 2)
For further information contact: Solinst Canada Ltd.
Fax: [phone] Tel: [phone]
35 Todd Road, Georgetown, Ontario Canada L7G 4R8
Web Site: www.solinst.com E-mail: [email protected]
Replacing the Circuit Board (#102977)
1. Remove the battery. Unscrew the three screws and remove
the faceplate. Unplug the Molex connector from the circuit
board to the tape.
2. Watch for proper connection/polarity on the Sonalert and
remove the two screws to disconnect the old circuit board
from the Sonalert and the wires connected to the light.
3. Cut the wires from the circuit board at the connections to
the test button, sensitivity switch, and battery tray. Note the
order/polarity in which they are connected. Remove the
old circuit board assembly.
4. Solder the wires from the new circuit board assembly to
the correct connections on the test button, battery tray and
sensitivity switch. Use steps 12 - 17 overleaf, along with the
diagram on the right, as a reference.
5. Place the new circuit board assembly over the connections
to the Sonalert and reattach the wires from the light to the
Sonalert using the two screws through the circuit board.
6. Connect the Molex connector from the new circuit board
assembly to the connector on the tape.
7. Replace faceplate and re-fasten the three screws. Replace
the battery. Circuit Board Showing Wire Connections
Molex
Connector
Sensitivity
Switch
Light
Sonalert
Battery
Tray
B
Replacing the Test Button (#109080)
1. Take out the battery, and remove the faceplate by
unfastening the three screws.
2. Unplug the Molex connector from the circuit board to the
tape.
3. Cut off the wires at the connections to the test button (note
the polarity of the black and red wire) and strip the wires.
4. Unscrew the old test button and remove from the faceplate.
5. Screw in the new test button.
6. Attach the wires to the new test button by soldering.
7. Reconnect the Molex connector. Replace the faceplate by
fastening the three screws. Replace the battery.
Replacing the On/Off Sensitivity Switch
(#102976 or 110119)
1. Remove the battery.
2. Unscrew the small brass screw on the side of the sensitivity
knob. Remove the sensitivity knob.
3. Unscrew and remove the faceplate. Unplug the Molex
connector from the circuit board to the tape.
Note: To gain better access to the sensitivity switch, you may want
to unscrew the two screws holding the circuit board to the
Sonalert, in order to move the circuit board out of the way.
4. Cut and strip the wires at the connection to the sensitivity
switch; note the order in which they are connected.
5. Unscrew the nut holding the sensitivity switch. Remove the
switch from the faceplate.
6. Install the new sensitivity switch through the faceplate with
the three connection prongs positioned opposite the battery
drawer and slightly towards the centre of the reel. Tighten
the nut.
7. Attach the wires to the correct positions by soldering. Use
the diagram above as a reference.
8. Reconnect the Molex connector. Replace the faceplate,
with three screws.
9. Fasten the sensitivity knob using the brass screw.
10. Replace the battery.
Replacing the Sonalert (#109075)
1. Remove the battery.
2. Unscrew and remove the faceplate. Unplug the Molex
connector from the circuit board to the tape.
3. Unscrew the Sonalert retaining ring from the front of the
faceplate. Push out the old Sonalert.
4. Unscrew the two screws holding the Sonalert to the circuit
board (watch for proper connection/polarity). Remove the
Sonalert from circuit board.
5. Insert the new Sonalert through the faceplate, and fasten the
Sonalert retainer ring until finger tight. Screw the circuit board
to the new Sonalert, making sure the wires from the light are
connected (red to +ve and black to -ve).
6. Reconnect the Molex connector. Replace the faceplate
using the three screws. Replace the battery.
Replacing the Light (#106660)
1. Remove the battery. Unscrew and remove the faceplate.
Unplug the Molex connector from the circuit board to the
tape.
2. Unscrew the two screws holding the wires from the light,
through the circuit board and onto the Sonalert (watch for
proper polarity).
3. Push the old light out and put the new light through the
faceplate.
4. Reconnect the two wires, using screws through the circuit
board and onto the Sonalert.
5. Reconnect the Molex connector. Replace faceplate using
the three screws. Replace the battery.
Test Button
Back of
Circuit Board
(wires connected
to other side)
B+