Introduction; Unpacking & Setup; Operating Instructions & Components; Test Specimen & Sieve Stack Assembly - Gilson SS-20 Operating Manual

1.0 INTRODUCTION

GILSON ROTARY SIFTER
• Built by Gilson, backed by Gilson.
• Accurate results.
• Simple and efficient.
• Ergonomic test positioning knob.
Gilson has revamped the classic rotary sifter design and
added our own innovations. This proven sieving method
preferred by many DOT's is now available with Gilson
guaranteed quality and reliability.
Gilson's progressive design carries forward the best features
of traditional rotary sifters and adds upgrades drawn from our
expertise in particle separation technol- ogy. Faster
conversion between sieve sizes, easier set up, and quieter
operation all reflect the time devoted to improved design and
materials.
The totally enclosed design allows safe, dust-free operation.
The cabinet is oriented at an angle, and the sieve stack is
simply placed inside, resting against the rollers; no clamping
is required. An ergonomic knob allows easy rotation of the
cabinet between the loading and testing positions. A drive
roller system continuously rotates the sieve stack with particle
separation assisted by tapping against the stack. The digital
countdown timer with large LED display precisely times
operation.
2.0 UNPACKING & SETUP
The SS-20 weighs approximately 215 lb. Use appropriate
equipment and manpower to uncrate and assemble the
Gilson Rotary Sifter. Wear safety glasses and work gloves.
The SS-20 Gilson Rotary Sifter is shipped with the Steel
Support Stand detached. The Sifter Cabinet must be
in- stalled on the Support Stand to operate properly. DO NOT
attempt to operate the Sifter until properly assembled. See
Figure 1 for components.
1. Remove the two halves of the Steel Support Stand
from the box. Each half has a Frame Cross Rail
partially bolted to the bottom rail.
2. Set the Support Stand halves parallel to each other
on a sturdy surface. Swing each cross rail out 90° and
connect to the opposite bottom rail, securing with
the bolts and nuts supplied. Tighten all connections
securely.
3. Remove the top half of the pivot post mounts from
the Floor Stand and set aside.
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Scarborough, ME 04074
4. Use two people to lift the Sifter Cabinet and carefully
set it vertically on the frame so that both Pivot Posts
rest in the "saddle" of the pivot post mounts. Replace
the top half of the mounts and secure the bolts.
5. Check that all connections are secure and that the
Sifter rotates properly 45° back from vertical to its
testing position against the Cabinet Rotation Stops.
6. Carefully read and understand the rest of these
instructions prior to operating the SS-20.
7. For any questions or issues, please contact Myers at
888.293.2121 or sales@myerstest.com
Technical Support at 800.444.1508, or email
techsupport@gilsonco.com
NOTE: The Gilson SS-20 Rotary Sifter comes with a 1/4
hp motor wired for 115V/60Hz. The SS-20F is wired
for 230V/50Hz. Both must be connected to a properly
grounded, dedicated outlet of minimum 15 amp capacity.
The motor is NOT explosion proof.
3.0 OPERATING INSTRUCTIONS
NOTE: Please read and understand all safety and
operating instructions for the Gilson SS-20 Rotary Sifter
before putting it into service.
3.1 Test Specimen & Sieve Stack Assembly
The Gilson Rotary Sifter efficiently separates most free flowing
materials with particle sizes from No.4 to No.200 (4.75mm to
75μm). Performance on extended size ranges can be
determined by experimentation. The test specimen should be
large enough to be representative, without overloading any
individual sieve. Maximum loading for individual sieves No.4
and finer should be no more than 200g for 8in sieves and
450g for 12in sieves, for materials with specific gravities
similar to mineral aggregates. Sieves coarser than No.4
should be limited to about one particle of material for each
available opening.
NOTE: Overloading on one or more sieves may result in
incomplete separation, inaccurate results or damage to
the sieve cloth. Large samples should be tested as two or
more batches, combining the results for final calculations.
or Gilson
888.293.2121
sales@myerstest.com
myerstest.com
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