Solinst 464 250 psi Replacement

Tools and Materials Needed

1. 464 Panel Mount Gauge 250 psi (Spare) (#111823)

2. 3/32" Allen Key

3. 5/16" Wrench

4. 16 mm Wrench

5. Teflon® Tape

Instructions

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

Pressure Gauge Replacement

Model 464 250 psi

464 Panel Mount Gauge 1/8" NPTM (Spare) (#111823)

5. Use the 16 mm wrench to remove the elbow fitting from the
Pressure Gauge.

Hex
Screws

Panel

Pressure Gauge

3. Remove the panel from the Control Unit and flip it over to access
the Pressure Gauge.

6. Use the 5/16" wrench to remove the two nuts holding the metal
bracket in place.

7. Remove the metal bracket and push the Pressure Gauge out
through the front of the panel. Pushing the Pressure Gauge out
may take some force.

Pressure Gauge

4. Push down on the “grasping ring” on the elbow fitting and pull to
remove the black tubing from the elbow on the Pressure Gauge. Do
the same for the clear tubing connected to the Solenoid (next to the
Pressure Gauge). Remove other tubing, if required, to gain more
access. Remember where the tubing connects.

Teflon is a registered trademark of DuPont.

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“Grasping Rings”

High Quality Groundwater and Surface Water Monitoring Instrumentation

®

Solinst is a registered trademark of Solinst Canada Ltd.

8. Remove the bracket from the new Pressure Gauge. Wrap Teflon
tape around the threads on the new Pressure Gauge.

9. Push the new Pressure Gauge into place through the front of the
panel. Ensure the new Pressure Gauge is oriented correctly.

Note: There will be a label on the side of the new Pressure Gauge.

Tilt the side with the label into the opening in the panel first,
to help get the Pressure Gauge in place. You may remove
the label if you are still having difficulty getting the Pressure
Gauge through the opening.

10. Install the new metal bracket and the washers to hold the Pressure
Gauge in place. Ensure the washers are just snug.

Flat Side

11. Install the elbow fitting onto the new Pressure Gauge. Use a second
wrench to hold Gauge while tightening the elbow fitting. Ensure the
fitting is all the way on. Position the elbow fitting so that a flat side
lines up with the screw. This allows access to reconnect the clear
tubing.

12. Push in to reconnect the black tubing to the elbow fitting, and the
clear tubing to the fitting on the Solenoid (reconnect any other
tubing).

13. Place the panel in the Control Unit case and re-install the four hex
screws.

14. Re-install the batteries. Test the Control Unit using compressed
air to ensure proper connections were made when replacing the
Pressure Gauge.

Printed in Canada
December 1, 2014

(#111824)
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35 Todd Road, Georgetown, Ontario Canada L7G 4R8

Web Site: www.solinst.com E-mail: [e-mail]

For further information contact: Solinst Canada Ltd.

Fax: [phone] Tel: [phone]