Over-Pressure Release Check - GE Marquette 418793-001 Service Manual

Over-Pressure Release
Check
3-16
MAINTENANCE: Checkout Procedure
2. Press and hold the
is now in Technical Calibrate mode and valve #1 is closed.
3. Apply pressures to the Accutracker between 0mmHg and 250mmHg
in increments of 50mmHg. Make sure there is no more than a +/–
2mmHg difference between the mercury column or PDM200 display
and the Accutracker display value.
4. Turn off the Accutracker.
5. After five seconds (to prevent the unit from "locking up"), press and
hold the button and turn the Accutracker on.
6. Press the button twice; then press the
Accutracker to activate the pump and valve circuitry. The unit
should go through a diagnostic self-test. If the unit passes the test,
TEST PASSED displays briefly.
7. When OFFICE SELF TEST displays, immediately press the
button to discontinue the reading in progress. This step is necessary
to identify that a reading can be aborted, if necessary, during a test
in case there is a problem (i.e., the cuff slips down the arm, an
electrode becomes detached, etc.).
8. Turn the Accutracker off to exit this mode.
The Over-Pressure release should occur whenever a pressure of
285mmHg (+/–20mmHg) is applied to the Accutracker pressure
transducer. The Over-Pressure release forces the pump to stop and valve
#1 to open.
1. Press and hold the
NOTE
Make sure no external pressure is applied to the
Accutracker when you turn it on.
2. Apply a pressure of 285mmHg (+/–20mmHg) to the Accutracker.
valve #1 should immediately open and allow the applied pressure to
release.
3. Once the Over-Pressure circuit is tripped, valve #1 and the pump are
disabled until "Analog Power" (+/–Vana) is removed from the circuit.
Turn the Accutracker off to reset the circuit.
APEX Telemetry Transmitter
401566-166
button and turn the Accutracker on. The unit
+
button to force the
button and turn the Accutracker on.
Revision D