Solinst 464 250 psi Cleaning Instructions

Tools and Materials Needed
1. 3/32" Allen Key
2. Small Utility Knife
3. 7/64" Allen Key
4. 11/16" Wrench
5. 14 mm Wrench
6. 1/2" Wrench
7. 7/16" Wrench
8. Cotton swab
9. Distilled water
10. Any suitable plastic adhesive (e.g. silicone)
Instructions
Note: These Instructions are for Model 464 250 psi Control Units sold
between September 2013 and January 2016.
1. Turn the Control Unit off and remove the batteries.
2. Use the 3/32" Allen key to undo the four hex screws on the
sides of the Control Unit.
Hex
Screws
Panel
3. Remove the panel from the Control Unit and flip it over to
access the Solenoid Valve Assembly.
(Page 1 of 2)
Control Unit Solenoid Valve Cleaning Instructions
Hex
Screws
Solenoid Valve
Assembly
High Quality Groundwater and Surface Water Monitoring Instrumentation
Model 464 250 psi (sold between September 2013 and January 2016)
4. Push down on the fittings to remove the three black tubes
from the Shuttle Valve Assembly, and the two clear tubes
from the Solenoid Valve Assembly (photo shows black tubes
removed).
Remove
Tube
Remove
Bracket
5. Use the 7/64" Allen Key to remove the three screws from the
bracket holding the Shuttle Valve Assembly, and carefully slide
the Shuttle Valve Assembly out from the bracket.
6. Use a small utility knife to break any adhesive holding the
Solenoid Connector to the Circuit Board. Unplug the Solenoid
Connector from the Circuit Board.
7. Use the appropriate wrenches to remove the two fittings
(shown on Page 2) from the Shuttle Valve Assembly. Twist to
remove the Solenoid Valve Assembly from the Shuttle Valve
Assembly.
Shuttle Valve
Tubes Assembly
Continued on page 2...
Remove
Tubes
Solenoid
Connector