Medtronic Lifepak 12 Service guideline

Title: Defibrillator – Lifepak 12 Date: January 11, 2020
By: Physio-Control / Medtronic *
File = Lifepak 12 Guide.doc

DISCLAIMER: THIS PROCEDURE PROVIDED "AS IS" AND
WITH POSSIBLE FAULTS. USER MUST VERIFY BEFORE
USE. NEITHER PROVIDER NOR WEBSITE ASSUMES ANY
RESPONSIBILITY FOR ITS USE.

1. General
Service Guideline for:
Medtronic/PhysioControl Lifepak 12
Defibrillator with ECG, SP02, NIBP and CO2 monitoring.

2. Reference Documents
Lifepak 12 Service Manual PN 3010013-015
Lifepak 12 Operating Instructions PN 3010012

3. Accessories

Hard Paddles / Cable, Soft Paddles / Cable
ECG clips with Cable, Printer Paper
SP02 Sensor/Cable (Massimo and Nellcor supported)
CO2 Sensor/Cable (not common)
NIBP Cuff/Tubing
Power Adapter (VLP12-06-000076) / Batteries
Lifepak 500 Test Load (optional but convenient)

Note: Section 8 in the OPERATING INSTRUCTIONS provides an official check of the unit as an option for
most of the following.

4. Basic PM Procedure

4.1. Physical Inspection – check paddles, case & cord integrity, tubing for cracks, and battery age.

Mild soap or disinfectant suggested for external cleaning. Do not use bleach or a flammable
liquid. If internal cleaning is needed, low pressure compressed air can be used.

Note: When configured mainly for portable use, traditional hand paddles may not be included.

4.2. Turn On and User Test

Plug in unit. When connected to the AC charger, but before turn-on, the “Batt Chg” LED
will light as long as the unit has a usable battery.
Turn ON. Press <OPTIONS>. Use the Selector Dial to choose User Test, which
automatically performs these tasks in less than a minute:

• Performs self-tests

• Charges to 10J and discharges internally (this energy is not accessible at the therapy
connector)

• Prints a Pass/Fail report
If display shows “Maintenance Due”, see Appendix.

4.3. Main Battery Quality / Power Adapter (see picture above, and Appendix for mounting options)

The Power Adapter’s display will indicate one of these: “READY”, “CHARGING”, or
“FAILED”, unless battery missing or open. See Appendix for more info.

With main batteries removed, confirm the defibrillator powers on without the SERVICE
LED illuminated.

Note: The typical battery pair for this unit is Nicad. These batteries, if left uncharged for several months, can
eventually self-short-out due to the growth of conductive crystals which otherwise burn away in a charged
battery. And if supplied with sealed lead acid batteries, these can completely open up after several years, and
will not be detected by the smart charger. The main unit can be used without batteries.

4.4. ECG Results

Connect a 3-lead ECG wire set to the EKG or defib simulator, matching colors or
designators. (This unit also supports 4, 5 and 12 lead.) An ECG waveform will appear on
the defibrillator. If not, use the <LEAD > button. Next, check the waveform “SIZE” button.
Change QRS volume by using the rotary selector to highlight the display’s upper left corner.
Press the rotary selector to bring up the QRS volume graphic. Volume can be changed from
zero to loud in several bar graph steps.

4.5. Strip Chart

With the waveform still on display, press <PRINT> and verify the printer waveform. Press
it again to stop printing. Note the date and time in the margin of the paper. See Appendix
for sample printout.

4.6. Joule Test (Paddles).

Note: To lessen paper waste, open the printer door to the right and mechanism will temporarily disengage.

Press SYNC. Confirm the SYNC LED lights. Adjust ECG size until the sense markers
appear on the QRS complexes. Confirm that the SYNC LED blinks off with each detected
QRS complex and the heart rate is displayed.

Note: “Therapy cable” refers to the standard high voltage cable that connects to patient pads or
paddles.

If available, connect the Lifepak 500 test load in lieu of paddles. Select 200 joules. Press
CHARGE and confirm that the tone indicating full charge sounds within 10 seconds or less.
Then press <SHOCK>. Test successful if display shows “Energy Delivered”.

If using a conventional defib testor (joule meter), place the standard paddles on the
defibrillator-checker paddle plates, and simultaneously press and hold both discharge buttons
while observing the screen. Confirm the defibrillator discharges on the next sensed QRS
complex. Warning: hand paddles that have not been used for a while may not respond on the
first button press.

4.7. NIBP Check (only if present).

Select the appropriately sized cuff. Typical initial simulator settings are 120/80. Press
<NIBP> to start the measurement. Results in the lower left screen corner. Next, change the
simulator for high blood pressure, and check. See Table 3-8 in the Operating Instructions for
an error list. Expected tracking accuracy: tbd

4.8. SP02 Check