THORLABS PTR302, User Manual

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PTR302 Rotary Proof Tester Chapter 6: Maintenance
Rev D, October 13, 2020 Page 13
Chapter 6 Maintenance
The purpose of the maintenance section is to define the planned maintenance requirements of the PTR302. Where
appropriate maintenance procedures are included.
6.1. Planned Maintenance
The PTR302 proof tester is designed for a production environment to give trouble free operation provided normal
planned maintenance is adhered to. Maintenance and repair procedures should only be performed by trained
personnel. Improper service and/or repair could result in the safety features being disabled and can also lead to
damage that will not be covered under warranty.
Planned Maintenance Schedule
Maintenance
Every
Cycle
Every
Shift
Daily Monthly
3
Months
12
Months
Replace Proof Test Grips 
Check Proof Test Calibration /
Recalibrate

6.2. Replace Proof Test Grips
Remove the 4 flat head screws on top of the proof test
mandrel and lift off the flanged top. Depress the
mandrel clamp button and remove the rubber grip.
Install a new grip making sure that the grip is uniformly
positioned around the mandrel and seated below the
bottom flange. Replace the top flange and 4 flat head
screws. Make sure that the mandrel clamp operates
freely and that the rubber grip does not rub against the
clamping arm. After replacing the proof test grips, a
calibration check should be performed.
6.3. Check Proof Test Calibration / Re-
Calibration
It is recommended that the PTR302 be returned to
Thorlabs annually for calibration check and/or
recalibration. A calibration fixture is available for
customers who prefer to perform this function in-house.
Figure 14 Replace Proof Test Grip