Zimmer 60-1200-101-00, Руководство оператора и сервисное руководство

Страница: 19 / 34

15. Once the 50 mm Hg point is calibrated, press the
SECOND CUFF INFLATE button to advance the unit
to the next pressure level. The unit’s TIME display will
now be alternating between “CAL” and “250”. Apply
250 mm Hg to the unit’s Second cuff port. Once the
pressure has stabilized, press the PRESSURE button so
the unit can calibrate the 250 mm Hg point. The unit
will beep to let the user know the set point was taken.
16. Once the 250 mm Hg point is calibrated, press the
SECOND CUFF INFLATE button to advance the unit to
the next pressure level. The unit’s TIME display will now
be alternating between “CAL” and “475”. Apply 475 mm
Hg to the unit’s Second cuff port. Once the pressure has
stabilized, press the PRESSURE button so the unit can
calibrate the 475 mm Hg point. The unit will beep to let
the user know the set point was taken.
17. At this point, use the SECOND CUFF DEFLATE button
to back the pressure level down to the point where the
TIME display is alternating between “CAL” and “0”.
Then, press the SECOND CUFF INFLATE and the
SECOND CUFF DEFLATE buttons simultaneously to
exit the Second cuff calibration. The unit will display
“CAL” “DONE” in the PRESSURE and TIME windows
respectively. The “CAL” “DONE” message tells the
user that the calibration set points that have been
calibrated to the unit have now been saved into the
non-volatile memory.
NOTE: If the “CAL” “DONE” message is not
displayed, the calibration is incomplete and the
adjustments will not be saved. Be certain to end the
calibration session by simultaneously pressing the
SECOND CUFF INFLATE and DEFLATE buttons
and verifying the “CAL” “DONE” message.
If the pressure settings were adjusted incorrectly
on the Main or Second cuff and an attempt is made
to have the unit calibrate the incorrect value that is
off by more than 15 mm Hg, a “CAL” “FAIL” alarm
will be generated. Service or calibration to the user’s
pressure meter or pressure source is recommended.
If the pressure signal from the internal
transducer requires more then a 15 mm Hg
correction to equal the applied pressure, a “CAL”
“FAIL” alarm will also be generated. Service to the
unit is recommended.
18. The unit remains in calibration mode until it is set
to STANDBY.
19. The stored calibration factors are retrieved from the non-
volatile memory during the power-up sequence. If the
checksum is invalid, a “CAL” “FAIL” alarm is generated
in the displays. The alarm will persist until the unit is set
to STANDBY. Re-calibration is required if this occurs.
20. It is recommended to check the calibration by following
the steps in Section 2.4 Step 5 “Calibration Check”
before using this unit on a patient.
3.5 LEAK TESTING
The A.T.S. 1200 Tourniquet is capable of keeping a cuff with
a substantial leak inflated. Naturally it is desirable to keep
plumbing leaks to an absolute minimum. For this reason,
a check for significant leakage is recommended at regular
intervals as well as following any service procedure.
After verifying the operation of the A.T.S. 1200
Tourniquet per Section 2.4, connect a 24 in. (61 cm)
(or larger) cuff which is known to be leak free to the Main
cuff port (
red ) of A.T.S. 1200 Tourniquet System. Adjust
the Main cuff set point to 475 mm Hg. Ensure that all
external connections are tight. Inflate the Main cuff and
allow the pressure to stabilize. At this point, the unit must
be set to STANDBY. Under normal use, the unit cannot be
set to STANDBY with a non-zero pressure value displayed
in either cuff. However for leak testing purposes, a bypass
feature has been incorporated. Press the ON/STANDBY
button until the alarm message “CUFF” “NOT” “DEFL”
appears. Release the ON/STANDBY button and within
5 seconds of the alarm discontinuing, press and hold the
ON/STANDBY button again. The button must be held
in for an additional 10 seconds before the unit will be
set to STANDBY.
NOTE:
During the 10 seconds, the alarm message will be
displayed, the alarm will continue to sound and the ALARM
SILENCE button will not silence the alarm.
Once the unit is set to STANDBY, wait for approximately
10 minutes and turn the unit back on. Operation will resume
under cuff inflated start-up conditions (See Section 2.6 Part 1
for explanation). Cancel the alarm using the ALARM
SILENCE button. Display the set point by activating the
PRESSURE button and view the current (New) pressure set
point. The set point is always displayed with an asterisk in
the far left position. The current set point for the cuff should
be at least 400 mm Hg or more. Values less than this indicate
an unacceptable leak rate and the source of the leak should
be traced and corrected. The first connection to check should
be the connections of the cuff. Different cuffs and/or cuff
hoses may be tried to determine if the leak is internal or
external of the unit.
Repeat the test for the Second cuff port.
3.6 BATTERY VOLTAGE AND BATTERY
SERVICE
NOTE:
This section assumes that the unit has been charged
for at least 24 hours. The unit’s enclosure must be removed
to measure battery voltage. See Section 3.2 “Access to Parts”
and be sure to follow cautionary statements.
1.
Battery Voltage Check
Be sure the unit is unplugged. Measure the battery
voltage. The battery voltage should not be lower than
12 V while the unit is unplugged and set to STANDBY.
17
A.T.S. 1200 TOURNIQUET SYSTEM