Operation
Digital Control (Timer) Panel:
The digital Timer Control Panel is located on the upper, right-hand side of
the machine base, right above the on/off switch.
To operate, turn the Sand Equivalent Shaker on.
Select the desired time using the Up and Down buttons on the control
panel.
Press the Start button to start the timer. This energizes the relay (N.O.
contacts close) and the displayed time begins counting down.
When the time remaining reaches zero, the relay with de-energize (N.O.
contacts open).
Pressing Start while the timer is running will end the cycle and reset the
timer.
Changing the Timer Operating Mode
With power applied to the timer, press and hold the Up and Down buttons
simultaneously until the current operating mode is displayed. (OP1=0 to
60min mode; OP=0 to 99sec mode.)
Press an Up or Down btton to change the displayed operating mode, then
press Start within 3 seconds to save the new operating mode.
Note: If Start is not pressed within 3 seconds, the timer will revert back to
the original operating mode.
Preset Travel and Speed:
The shaker has a throw of 8 ± 0.04” and operates at 175 ± 2 cycles per
minute.
Method:
Prepare the sample to be tested according to the governing agency
standard(s). Place the clear plastic cylinder containing the test sample and
rubber stopper in position on the slide assembly of the shaker. The end with
the spring loaded holder fits over the cork (rubber stopper) in the open end
of the clear cylinder.
Select the time period appropriate for the test, either 45 seconds or 10
minutes using the center toggle switch. Then press the start push-button
switch to begin the test. The test will end at the end of the elapsed time
selected, or by the operator pressing the pushbutton stop switch any time
during the test.
Maintenance
First unplug the machine from its power receptacle or source. Normal routine
maintenance consists of lubrication at several key locations. In addition, worn
components should be suspected if there is any unusual sound or action of the
machine.
