Timer Set-Up & Operation; Maintenance; Routine Annual Maintenance - Gilson SS-12R Operating Manual

Gilson Company, Inc.
5. When the test is complete, unscrew the knobs enough
to release tension on the stack, then push the but-
tons and raise the assembly to the desired height to
remove the sieves.
3.2 Timer Set-Up & Operation
This unit is equipped with an easy-to-operate Gilson
interval count-down timer. The timer has a large 0.6in
LED display and will operate in four different modes. It is
powered by line voltage and will work on power supplies
from 100—265 VAC, 50/60Hz, with up to 20 amps Induc-
tive or Resistive current.
NOTE: The main device controlled by the timer may
be restricted to operating on a more limited electrical
supply range. Check the device carefully to insure
compatibility with your electrical supply.
Current timer mode is indicated by the four red LED's on
the timer face:
• A = MMSS (99min:59sec x 1 second)
• B = HHMM (99hr:59min x 1 minute)
• C = SSSS (9999sec x 1 second)
• D = MMMM (9999min x 1 minute)
(H is for hours, M for minutes, and S for seconds.) To
adjust the timer mode, press and hold both <UP> and
<DOWN> keys at the same time until the display shows
the mode. Once the mode letters are displayed, press
<UP> or <DOWN> to change modes. Press <START/
STOP> to accept new mode.
To set the run time, press either <UP> or <DOWN>. The
first digit on the right hand side will flash in half-second
intervals. Press either arrow key to adjust to the desired
value. To enter the displayed digit and move to the next,
press <START/STOP>. Once the last digit on the left is
entered, the timer is ready to start.
Press <START/STOP> to initiate the current run program.
Once running, pressing <START/STOP> again will pause
the timer with the current amount of time remaining on
screen. When allowed to time-out, the timer beeps and
displays DONE. Press any key to continue. Setting and
Mode values are saved automatically and restored on
power-up.
Perform your test. Time required to complete a test will vary
depending upon the physical characteristics of the test
material. Most separations will be complete in ten minutes
or less. Refer to your test specifications, and be consistent.
Disconnect and lock out power to the Sieve Shaker when
it is not in use.
NOTE: The SS-8R and SS-12R Sieve Shakers are
equipped with a tapping mechanism which makes
a loud noise. If the noise is unacceptable, consider
using the SSA-805R Sound Compartment.
Models SS-8R and SS-12R are counterbalanced to permit
free-standing operation with most common sieve loadings.
With very tall or very short sieve stacks, the units may be
unstable and move around during operation. Normally this
condition occurs only with sieve stacks exceeding about 20in
(508mm) in height. This is equivalent to using more than eight
sieves and pan of 2-1/8in stacking height. If you need to use
tall sieve stacks, and your sieve shaker moves around, try
re-leveling. If stability is a problem with short sieve stacks,
add extra nonfunctional sieves below an extended-rim pan.
NOTE: Bolting the machine down is not a substitute
for leveling. Bolting the shaker down will cause forces
from the unbalanced sieve stack to damage the drive
mechanism. This damage is not covered by warranty.
When using 8in sieves on the Model SS-12R, always use
the platform adapter to compensate for the difference
in sieve weights. This adapter can be used with either
a regular or an extended-rim pan. When the adapter is
positioned with larger I.D. side up, you can use either pan.
Invert the adapter for a tighter fit if using only an extended
rim pan. Secure the ring to the sieve platform with the two
cap screws provided.

4.0 MAINTENANCE:

Before performing maintenance or repairs on the sieve
shaker, ALWAYS read and understand the safety, operat-
ing, and maintenance instructions.
Please provide the serial number and model number of
the unit when ordering replacement parts.

4.1 Routine Annual Maintenance

1. Apply of a few drops of oil to the motor end bearings.
2. Inspect the drive belt for wear, tension, and alignment.
A worn, loose, tight, or misaligned drive belt can affect
operation of the sieve shaker.
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Gilson Sieve Shaker: SS-8R & SS-12R