Dynisco 4002 User Manual

at this point by pressing the UP or DOWN SMART Keys. This ends the
program edit mode.
To SAVE the program: Press ESC twice to back out to the SAVE Program
mode and select SAVE to save the program under the OLD program name.
Change the program name in the EDIT mode.
4) Choosing the Program
Press the PROGRAM button. A square block will appear in the upper left
corner of the LED display. Enter the number of the program that was just
created (05) or the number of the previously entered program of your choice.
You can also press UP and DOWN to browse preprogrammed programs.
The unit will then attempt to latch into the specified temperature. MAKE SURE
THE PISTON and DIE are in the unit. The temperature must equilibrate with the
assemblies in place. The user must wait until the specified temperature has been
achieved to continue with the experiment. When the instrument has latched-in,
continue with sample loading as follows:
Loading the Barrel
Bubbles
RUN
Loading the Sample
Remove the piston rod and lay it on a cotton cloth. Check to see if the die is at
the bottom of the barrel. Fill the 10 ml beaker with an accurately weighed
charge of material (see section on Charge Weight). Fill heat chamber with this
appropriate charge. Use about 5 grams if nothing is known about the material.
Add about two-thirds of the beaker into the barrel, using the brown fill funnel.
The loading should be done in two increments, the first consisting of
approximately 60% of the material. Tamp down the material with the packing
tool using approximately 20 pounds of force. The packing tool can be inserted
through the fill funnel. If bridging (clogging-up) of the material occurs in the
fill funnel, slide the fill funnel off to one side (without lifting) and tamp down
on the material in the barrel. Move the fill funnel back into place. The
remaining material should drop down into the barrel directly. Repeat with the
remainder of the material.
Bubbles are in your sample if snapping/popping noises are heard as the
extrudate is forced through the die orifice. If bubbles appear in the extrudate
use less material between tamping down. If bubbles continue the sample may
not be sufficiently dry.
Place the plunger into the barrel. (Position the Optical Flag post to the right
side). Seat the guide bushing down into the barrel if it as not already fallen into
place. The guide bushing should move freely on the plunger. Place the weight
on the plunger rod and immediately press RUN. RUN must be pressed
immediately after loading the barrel to be compliant with the ASTM 1238
specification. Pressing RUN also starts the internal computer program running.
This program will start an internal timer. Wait for the melt time (pre-heat) clock
to count down from 360 seconds.
Series 4000 Melt Indexer Operation Manual Method "A" Run  23

Dynisco 4002 Specifications

General

Brand	Dynisco
Model	4002
Category	Laboratory Equipment
Language	English