Test Procedure
The valve lever is labelled
Load
and
Unload
.
The load control is labelled
Decrease
,
Increase
and
0
(zero).
•
At the beginning of the test move the valve lever fully to the
Load
position.
•
Turn the Load Rate control clockwise and then press TARE on the Comtest keypad.
•
To close the daylight continue to increase the load rate and bring the sample into contact with
the ball seat platen.
•
When you see the machine start to load press the RUN button on the Comtest keypad.
•
Manipulate the load rate with the control and keep it within the limits shown on the Comtest
display, known as the pace rate.
•
Once the sample has failed move the lever to the
Unload
position and turn the load rate
control anti-clockwise as far as it will go.
•
The Comtest will show HOLD on the display and will hold the failure point.
•
Remove the failed sample.
•
Load the next sample.
•
Press Reset on the Comtest.
•
It will ask if you wish to save or not.
•
Press ENT to save the test.
•
To test the next sample move the valve lever to the
Load
position and start again.
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