Waters Prep Series Installation And Maintenance Manual page 125

To perform an external switch (S1 to S4) output test:
1. Attach a jumper wire from the S1 terminal to the INJ terminal on the
rear panel.
2. Press ENTER.
The screen displays
3. Press ENTER.
4. Repeat steps 1 to 3 for the remaining switch terminals (S2 to S4).
5. When you have tested all four external switches, the screen displays
CONNECT HOLD TO INJECT
If you want to perform the Hold Output test, do not press ENTER
Tip:
until after you attach Hold to INJ. If you want to bypass the Hold
Output test, press ENTER.
Hold output test
To prevent further injections in case of power failure, the Hold switch outputs
a signal to devices that can recognize the signal, pressure shutdown, or an
abort procedure.
To perform a hold output test:
1. Attach a jumper wire from Hold to Gnd on the rear panel.
2. Press ENTER. The screen displays
3. Press ENTER.
4. Remove the jumper wire.
5. Press ENTER.
Chart test
During this test, the Chart output ramps from 0 to 100% and then returns
suddenly to 0%.
To perform a chart test:
1. Connect the chart recorder to the Chart + and – terminals.
2. Set the recorder to accept a 10-mV full scale signal.
or
TEST PASSED TEST FAILED
.
TEST PASSED
.
or .
TEST FAILED
Performance tests 3-41