Service and repair
8-48
10070389 Rev. A
Puritan Bennett™ 700 Series Ventilator System Service Manual
7.
Confirm the backup alarm sounded during POST. This indicates W1 is seated correctly.
8.10.3.4 Testing
After replacing the backup alarm PCB, test the PCB as follows.
NOTE:
Tools needed:
• Watch or clock with second hand
• M3 x 12 POZIDRIV™* driver
1.
Turn the power switch to the OFF position and remove AC power.
2.
If attached, disconnect the external battery.
3.
Locate the internal battery cover on the rear of the unit (Figure 8-52).
4.
Refer to the General repair safety instructions on page 8-1 and use applicable safety
precautions.
5.
Remove the internal battery compartment access plate by removing four screws with
captive washers.
6.
Slide out the battery part way, disconnect harness, and finish sliding the battery out.
7.
Connect AC power to the ventilator and turn the power switch to the ON position. An
alarm will sound, indicating the absence of the internal battery.
8.
Press the alarm reset key to reset the ABNORMAL RESET ALARM.
9.
Wait ten minutes to ensure the backup alarm capacitor has time to charge.
10. Leaving the power switch ON, disconnect AC power from the unit.
11. Verify the backup alarm sounds. If the alarm does not sound:
a.
Make a note that the alarm failed to sound under this test.
b.
Re-assemble the ventilator in accordance with steps 12 and 13 below.
c.
Contact Covidien Technical Support at 1.800.255.6774.
12. Slide battery partially in, connect harness and complete sliding battery into
compartment.
13. Replace battery compartment access plate and replace the four screws with captive
washers.
14. Reconnect AC power.
15. Perform Performance Verification Test per Chapter 5 of
700 Series Ventilator System
Service Manual
before returning ventilator to service.
Summary of Contents for Puritan Bennett 700 Series
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