From lab to production,
providing a window into the process
Instrument Maintenance Recommendations
Daily:
Remove the orifice and clean thoroughly with brush and precision drill bit. Clean your indexer barrel with
cotton patches when hot. Piston should spin easily when placed into a clean barrel.
Weekly:
Give good cleaning with brass brush. Use oven cleaner to clean the piston rod exposed metal and orifice.
Monthly or Long Term:
Depending on your company policy, a calibration or calibration check may be needed on a
monthly, quarterly or yearly basis. It is a recommended that a repetitive maintenance schedule be created for your
instrument.
Clean unit:
Clean the dust and dirt out of the electronics module with clean air every six months to one year, more
often in dirty environments. Perform this with power removed from the system. Remove the orifice and clean
thoroughly. Clean your barrel. Use oven cleaner to clean the piston rod assembly and orifice.
Check Mechanical Tolerances:
All dimensions and tolerances per ASTM D1238 and ISO 1133-1. Piston tip
diameter = 0.3730”/9.474mm +/
-
0.0003”/0.0076mm; piston tip length = 0.2500”/6.35mm +/
-
0.0050”/0.127mm.
Assembled piston rod weighs 100 grams. GO/NO-GO gage works properly on the orifice. Orifice length =
0.3150”/8mm +/
-
0.0010”/0.0254mm. Weights still weigh correctly. Digital Encoder calibration. Gages can
be
purchased from Dynisco Polymer Test.
Barrel Diameter:
Once the barrel is extremely clean, all dimensional measurements are to be made at room
temperature it can be checked using a bore gage. Gage can be purchased from Dynisco Polymer Test. At the time
o
f manufacture, the barrel center bore measures 0.3760”/9.55mm +/
-
0.0002”/0.00508mm. All dimensions and
tolerances per ASTM D1238 and ISO 1133-1.
Ask for help:
Call Dynisco Polymer Test directly at (508) 541-9400 or visit http://www.dynisco.com/polytest-ser-
vices and ask for technical support. To help us handle your questions as quickly as possible, have the following
items ready before you call:
1.
Instrument name and model number (on back panel)
2.
Instrument serial number (on back panel)
3.
Current version of instrument firmware (Power up unit to see, version shown on
“About”
screen under
“Maintenance
Tab”)
4.
Computer system make and model (if applicable)
5.
Current version of LaVA Suite software (if applicable)
Equipment Setup
Unpacking the Indexer
The Lab Melt Flow Indexer comes in a heavy duty, wood container. First, remove the container’s lid—
a bit tool
should be within the crate packing documents on the outside of the container that can be inserted into an electric
type drill to remove the lid and bracing screws. Several boxes may be packed inside along with the instrument;
remove them and check that all boxes are received. For example, they are coded 1 of 5 or 3 of 5, indicating the total
number is five.
For non-weight lift model instruments, the instrument is braced into the box with test weights and possibly
accessories under the instrument in a foam pattern. Remove the instrument’s bracing. Minding that a base unit
weights 45lbs/21.4Kg, either lift the unit out from the top of the container with two people or carefully lay the
container on its side and slide the instrument out of the container.
P/N:974179
Rev: 0918 ECO: 49667
www.dynisco.com
