GE ApexPro TT, Техническое руководство

Страница: 160 / 192

7-22 ApexPro™ 2001989-351A
Checkout
4. Turn off the Accutracker.
5. After 5 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 button to force the Accutracker to
activate the pump and valve circuitry. The unit goes 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.
Over-pressure release check
The Over-Pressure release occurs whenever a pressure of 285 mmHg (+/–20 mmHg)
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 button and turn the Accutracker on.
NOTE
Make sure no external pressure is applied to the Accutracker when you turn
it on.
2. Apply a pressure of 285 mmHg (+/–20 mmHg) to the Accutracker. Valve #1
immediately opens and allows 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.
Hardware time-out and system leak check
1. Press and hold the button and turn the Accutracker on.
NOTE
Make sure no external pressure is applied to the Accutracker when you turn
it on.
2. Apply 200 mmHg pressure to the Accutracker pressure circuit and start a timer to
clock the Hardware Time-Out circuit.
3. The Hardware Time-Out occurs in 3 minutes (+/–45 seconds). Valve #1 opens
and dumps pressure once the time-out is finished. As you monitor the Time-Out,
monitor the pressure (in mmHg) displayed on the Accutracker LCD. The
Accutracker should leak no more than 2 mmHg per minute.