Solinst 464 Operating instructions

High Quality Groundwater and Surface Water Monitoring Instrumentation
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Electronic Pump Control Unit Troubleshooting
Model 464
Continued overleaf...
Symptom: No air discharge from Control Unit:
Test Solenoid Switch Function
Follow the steps below, and answer the questions to determine
if your Solenoid Switch is functioning properly:
Solenoid Switch
Check all Tubing
Connections for Leaks
Blow Off Valve
Manual
Control
Valve
Air Out
Regulator
Air In
Pressure Gauge
1. With an air source connected to the Control Unit, and a
flow rate selected and running, can you hear the ‘clicking’
sound of the Solenoid switching with every drive and vent
cycle?
2. Using the Regulator, adjust the pressure (0 to 100 psi).
Does the Pressure Gauge respond with the change?
3. Connect an open fitting to the Air Out connection. Push the
Manual Control Valve. Air should discharge out through the
open fitting.
4. No air discharge means that the solenoid is blocked and not
functioning, contact Solinst.
Note: The Blow off Valve of the 125 psi Control Unit is
activated at ~150 psi, and the 250 psi Control Unit
at ~315 psi. When activated, the Blow off Valves
discharge into the open box area as a burst of air - this
is normal. The Regulator of both types of units may
hiss - this is normal.
1. Disconnect the air supply. Remove the four 3/32" hex
screws on the sides of the Control Unit holding the faceplate,
and flip for access to the components.
Symptom: Hear an air discharge from below the faceplate:
Check for Leaks
Solenoid Switch
Back of the 125 psi 464 Faceplate
Back of the 250 psi 464 Faceplate (after September 2013)
2. Ensure a good physical connection of the air line from the
Manual Control Valve to the Solenoid Switch (see photos
above). The air lines simply push into the fitting to make the
airtight connection.
3. Reconnect the air supply and adjust the Regulator to
100 psi. Do you hear/see any air leaks?
4. If you still hear an air discharge from the back of the
faceplate, contact Solinst.
Front of the Model 464 Faceplate Check all Tubing
Connections for Leaks
Blow Off Valve

Printed in Canada
August 12, 2014
(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]
®Solinst is a registered trademark of Solinst Canada Ltd.
Symptom: Timer Cycles not functioning:
Check and Test the Circuit Board
You can check the Circuit Board to see if the timer cycles for the
flow rates are working correctly, by following the steps below:
1. Disconnect the air supply. Remove the four 3/32” hex
screws on the sides of the Control Unit holding the faceplate,
and flip for access to the components.
2. Ensure a good physical connection of the two white
connectors into the Circuit Board.
3. Is there any discolouring/staining on the Circuit Board?
4. Use a volt meter across the Battery Terminal Connections
to ensure it reads 8 Volts.
Solenoid Switch Connectors Circuit Board
Back of the 125 psi 464 Faceplate
5. Set the drive/vent cycle to 3 seconds, and start the Control
Unit (See 464 User Guide).
6. Disconnect the Solenoid Switch from the Circuit Board.
You will see 3 pins on the Circuit Board - the centre pin is
the ground.
7. Using a volt meter set to “AC”, connect the black lead of
the volt meter to the centre ground pin, and the red lead to
either one of the outside pins.
8. You should see a ‘pulse’ every 3 seconds of about 1 volt.
This means the connection on the Circuit Board is okay.
9. If there is no pulse, contact Solinst.
125 psi Solenoid Switch Connector
250 psi Solenoid Switch Connector
3 Pin Connector - Centre is Pin is Ground
Battery Terminal
Connections
Circuit Board and Connectors Solenoid
Switch
Back of the 250 psi 464 Faceplate (after September 2013)
Battery Terminal
Connections