Manual Controlled Tester
Continuous Abrading Feature
For High Cycle Tests
A new style holding spring has replaced the old style allen screw.
To change from standard cycle abrading to continuous cycle abrading:
Stop motor at sound of counter actuation.
Loosen by hand the allen screw securing cam follower bearing shaft 'l' to rocker arm 'H'. (Requires about 3 revolutions, as this screw fits in a pocket in shaft).
There is a line on end of shaft to show radial position of shaft for screw pocket when restoring follower to standard abrading position.
With a light pressure on follower bearing move bearing and its shaft toward operator.
Stop with clearance between this assembly and the assemblies at its each end. Very lightly screw into pocket of shaft.
To make continuous abrading test:
Follow normal procedure in setting up specimen.
Turn on motor.
Periodically stop motor and then raise rocker arm by hand to inspect for wear through to substrate.
Lower rocker arm and then turn motor on if test is incomplete.
Note: Checking for wear through in the above mentioned manner does not affect the accuracy of the test.
Note: To convert continuous abrading cycles to standard cycles, multiply continuous cycles by 2.5.
Note: Some labs will make an aborted test, when only concerned with passing a minimum requirement, thus savings in time, paper and wear.
Note: Orientation of 'N' frame for good paper tracking is much easier and faster in continuous cycle than in standard cycle!
Cam follower bearing & shaft shown in position for continuous abrading.
