9
minimal maintenance. Adhesive and or small particles may build up on the sealing
surfaces within the Luer check valve. Most of the time these small particles can be
flushed out by priming the system. If priming does not flush the cured adhesive out of
the valve it will be necessary to disassembly the Lure Check Valve and clean the parts
with Loctite
®
Flushing Solvent 12121 or replace parts with Loctite
®
EQ VA40 Seal Kit,
IDH# 2389012.
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 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.
14.
CAUTION: the vapors from the flushing solvent will be emitted. If an exhaust
hood or fume filtration system is available, it should be used.
