Solinst 464 Mk3 250 psi Use and care manual

Pressure Regulator Knob Replacement
Model 464 Mk3 250 psi
High Quality Groundwater and Surface Water Monitoring Instrumentation
(Page 1 of 2)
Tools and Materials Needed
1. 464 Pressure Regulator Knob Assembly – 250 psi
(Spare) for the Control Unit (#114048)
2. Small Flat Screwdriver
3. Large Adjustable Wrench
4. 17 mm Socket Wrench
5. 9/32" Socket Wrench
6. 300 psi Pressure Source (Compressed Gas Cylinder)
Instructions
1. Turn the Pump Control Unit off. Disconnect the pressure supply
line.
Pressure
Regulator
Knob
2. Use a small flat screwdriver to pry the plug from the pressure
regulator knob.
®Solinst is a registered trademark of Solinst Canada Ltd.
464 Pressure Regulator Knob Assembly –
250 psi (Spare) for the Control Unit (#114048)
3. Use the adjustable wrench to stabilize the knob while loosening the
nut from the inside of the knob using the 17 mm socket wrench.
Note: You may want to use a cloth around the knob to prevent further
damage to the old knob.
4. Unscrew and remove the nut and knob from the stem of the
pressure regulator assembly.
Note: Save the nut to use when installing the new knob.
...Continued overleaf

Printed in Canada
August 9, 2018
(#114051)
(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]
5. Connect the pressure source to the Control Unit. At the source,
turn the pressure up to about 280 psi (between 250 and 300 psi).
6. Use the 9/32" socket wrench to turn the stem of the pressure
regulator assembly clockwise until the pressure reading on the
gauge of the Control Unit is above 250 psi and the needle stops
moving.
7. Insert the black nut that came with the new knob assembly into the
cutout on the bottom of the new knob. Press firmly into place.
8. Slowly screw the new knob onto the stem of the pressure regulator
assembly until it bottoms out. Do not tighten. Turn the knob 1 and
1/2 turns back from that position.
9. Install the stainless steel nut (removed with the old knob) to the stem
of the pressure regulator assembly.
10. Wrap a cloth around the new knob to prevent damage. Use the
adjustable wrench to stabilize the knob while tightening the nut
using the 17 mm socket wrench. Tighten until very snug.
11. Test the Control Unit to ensure proper connections and pressure
settings were made.