THORLABS vytran PTR308 User Manual page 29

PTR308 Automatic Recoater with Linear Proof Tester
Chapter 9 Troubleshooting
Recoat Diagnostics
Problem
Fiber snaps when mold closes.
Material flows excessively
outside of mold cavity or does
not flow down mold cavity
("puddling").
Flashing forms along the
length of the recoat.
Recoat feels tacky or can be
easily rubbed off by pulling the
fiber between fingers.
Fiber sticks to recoat mold
consistently.
Proof Test Diagnostics
Problem
Peak proof test value does not
reach preset value.
Fiber slips at very high tension
levels.
Tension levels appear unusually
high or low for the particular
fiber being tested.
Rev C, October 19, 2020
Possible Cause
Fiber not loaded properly.
Channels of recoat mold
plates are misaligned.
Recoat mold plates are dirty.
Channels of recoat mold
plates are misaligned.
Cure time too long.
Cure time too short.
Recoat lamp(s) burned out or
old.
Recoat mold plates are dirty.
Possible Cause
Fiber slipped in fiber holding block.
Fiber holding block inserts are
dirty.
Fiber holding block inserts are
worn out.
Wrong fiber diameter entered.
Chapter 9: Troubleshooting
Solution
See Section 6.1: Loading the Fiber
Contact Thorlabs for recoater servicing.
Dirt between quartz mold plates will not
allow them to close, causing the acrylate
to flow excessively outside the mold
cavity. The recoat mold plates should be
cleaned as described in Section 8.2:
Clean/Check Mold.
Contact Thorlabs for recoater servicing.
Decrease cure time. This flashing can
generally be removed by wiping the
recoated section with a dry lens tissue.
Do not use a solvent!
Increase the cure time.
Replace the recoat.
Clean the recoat mold plates as
described in Section 8.2: Clean/Check
Mold.
Solution
Clean fiber holding block inserts as
described in Section 8.2:
Check/Clean FHB Inserts.
Clean fiber holding block inserts as
described in Section 8.2:
Check/Clean FHB Inserts.
Replace fiber holding block inserts
as described in Section 6.3: Proof
Test System.
The fiber diameter is used in the
tension level calculation. Check the
setting for the current fiber
diameter as described in
Chapter 7.
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