Be sure to remove any visible particles and wash the Teflon
separator twice with the IPA solution, then dry with the pro-
vided micro fiber cloth. Allow the fixture to air dry after clean-
ing for an additional 15 minutes before using the fixture for
measurements. Use the same cleaning procedure for the power
plate. (Figure 12)
Notice the edges of the metal plates. Flanges are machined
around three sides of the plates. These special edges are to en-
sure proper alignment when mounting the plates in the acrylic
fixture. Be sure to clean the alignment edge flanges so they are
free of particles.
When cleaning the metal plates, avoid touching the material
contact surfaces. Human contact will transfer finger oils to the
test surfaces, which are unnecessary contaminants.
D. Cleaning the Acrylic Frame
The machined acrylic frame must be cleaned carefully.
Do not use alcohol
or cleaners containing
alcohol or ammonia as these solutions will cause “crazing” resulting in many hairline cracks and
weaken the assembly. Once the metal plates are removed, brush any particles from the frame us-
ing the supplied brush. Use a cotton swab where necessary to remove stubborn contaminants
Figure 13: Cleaning Acrylic Frame with
Brush using Reference Module
Figure 14: Cleaning Frame Mounting
Grooves with Cotton Swab
If necessary, wash the acrylic fixture free of contaminants with clean water, rinse one or more
times, then allow to air dry or carefully wipe with a low linting cloth.
Reassembly of PRF-930 Fixture
When preparing to reassemble the fixture, note the three alignment flanges on each metal plate.
These edges are designed to fit into the recessed groove surrounding the plate mounting loca-
tions. Their function is to insure proper alignment and minimize plate movement.
Position the plates such that they are placed in the acrylic frame with edge alignment flanges
seated in the frame’s recessed grooves. (Figure 15 & 16) Insert two long 1 inch machine screws
Figure 12: Cleaning the Power Plate with
IPA and Micro Fiber Cloth
14
Rev. A / January 2010
PRF-930 Advanced Powder Fixture