10
7.
Reassembly luer check valve
a.
Insert ball seat into spring
b.
Place spring and ball seat into luer check valve body.
c.
Place ball into the ball seat
8.
The Loctite EQ VA20 Volumetric Valve is ready to dispense.
Dispense Valves Flushing & Cleaning Procedure
If the dispensing system (reservoir, dispense valve, etc.) will not be used for one or more
weeks, it is recommended that the feed line and dispense valve be flushed clean with the proper
solvent. This procedure will describe the process.
1.
Turn off the reservoir pressure and verify that pressure has been exhausted from
the reservoir.
2.
Remove the reservoir lid and remove the adhesive container.
3.
Replace it with a container of Equipment Flushing Solvent (item # 12121).
4.
Replace the reservoir lid and tighten all wing nuts so the lid is secure.
5.
Adjust the air pressure regulator to 5 psi.
6.
Place a beaker or similar container under the dispense valve.
7.
Rotate the Luer Check Valve counterclockwise 2 ¼ rotations and allow the
Equipment Flushing Solvent to flow into the container.
8.
Note: this may take a few moments (or minutes) depending upon the viscosity of
the adhesive in the feed line.
9.
While the solvent is flowing, be sure to cycle the volumetric valve in order to
simulate an “agitation” effect.
10.
Continue this process of opening and closing the valve every 5 seconds for a
total of two (2) minutes or until the solvent is clear.
11.
Once you are satisfied that all adhesive has been removed from the feed line and
dispense valve, shut off the air and remove the flushing solvent.
12.
Re-install the reservoir lid and adjust the pressure regulator to approx. 70 % of its
maximum value.
13.
Allow air to continually flow out of the dispense valve.
