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Manual Reference
ZOLL X Series Service Manual, REF 9650-001356-01 Rev. E, issue date July 2014. The manual notes that if more than 3 years have elapsed since the issue date, ZOLL should be contacted to determine whether additional product information updates are available.
Manufacturer Recommendation / AEM Status
Manufacturer-listed PM items
The ZOLL X Series service manual lists maintenance tests for physical inspection, operational tests, ECG leads testing, heart rate display testing, heart rate alarm testing, power supply testing, leakage current testing, shock testing, advisory testing, synchronized cardioversion testing, pacer testing, printer testing, treatment report testing, SpO2 testing, SpO2 / SpCO / SpMet testing if equipped, EtCO2 calibration and checks, IBP testing, NIBP calibration check and pneumatic testing, temperature testing, optional Wi-Fi testing, and optional audio recording testing.
Manufacturer-listed frequencies
At minimum, the manual states that a trained biomedical technician must perform CO2 calibration once per year and NIBP calibration check once per year when equipped.
The manual states that a CO2 calibration check may be performed at any time to verify CO2 calibration. It also states that maintenance tests are necessary after a module is repaired to ensure X Series functions work properly.
The manual points to the Operator’s Shift Checklist in the operator’s guide and states users should conduct that checklist at the beginning of every shift because X Series units must be ready for immediate use.
The full maintenance checklist interval beyond the annual CO2 calibration and annual NIBP calibration check is not specified in the provided manual.
Manufacturer-listed part numbers and test support
Battery Current Test Fixture: 9100-3055-TF
NIBP test fixture cuff: 9100-3072-TF
CO2 calibration gas kit: Scott Medical Products PN T4653ORF-2BD
Fluke Biomedical BP Pump / Dynatech Nevada interface adapter: 3010-0378
AEM note
The manual gives specific annual minimums for CO2 calibration and NIBP calibration check, but it does not clearly state that the full maintenance checklist must be completed annually. If a facility performs the full maintenance checklist at a different interval, omits optional tests, or changes any manufacturer-listed activity or interval, that should be handled under the facility’s approved AEM program, risk assessment, maintenance history, and applicable regulatory requirements.
What This PM Procedure Covers
This procedure covers visual and physical inspection, built-in operational device tests, defibrillator output and advisory testing, synchronized cardioversion verification, pacer output verification, ECG, SpO2, EtCO2, IBP, NIBP, and temperature checks as equipped, leakage current testing, annual CO2 calibration if equipped, annual NIBP calibration check if equipped, and CMMS-ready PM documentation.
Required Tools and Equipment
Fluke Impulse 7000DP Analyzer or equivalent
ECG simulator
Fluke Index 2 SpO2 simulator or equivalent
IBP / temperature simulator
NIBP simulator
5% CO2 calibration gas cylinder with CO2 sample line
CO2 sampling line airway adapter
Stopwatch
Battery Current Test Fixture, PN 9100-3055-TF
Agilent E3633A power supply or equivalent
Agilent 34401 digital multimeter or equivalent
3-lead, 5-lead, and 12-lead ECG cables as applicable
Dual-lumen NIBP hose
IBP cable
SpO2 cable and sensor
EtCO2 cable and sensor
Paddles, if applicable
Printer paper
Battery
Auxiliary power source
USB thumb drive, if performing USB or audio recording tests
PC with Windows Media Player and speakers, if performing audio recording test
Electrical safety analyzer / leakage tester suitable for the facility’s electrical safety program
Step-by-Step PM Procedure
1. Review Device Status and Configuration
Confirm device model, serial number, location, installed options, battery status, and whether the device has ECG, SpO2, SpCO, SpMet, EtCO2, IBP, NIBP, temperature, Wi-Fi, printer, paddles, and audio recording options.
Expected outcome: Installed options are identified so only applicable tests are performed.
2. Perform Physical Inspection
Inspect the housing, handle, recorder drawer, connectors, front panel, paddles if applicable, cables, strain reliefs, battery seating, battery housing, and battery contacts.
Expected outcome: Unit is clean, undamaged, free of cracks, loose parts, damaged cables, exposed wires, damaged paddle plates, and battery/contact damage.
Remove from service if cracked housing, damaged front panel, damaged patient connectors, damaged paddles, exposed wire, damaged strain reliefs, battery damage, or any condition that could affect safe clinical use is found.
3. Perform Built-In Operational Tests
Access operational tests through More > Setup > Supervisor > Service > Device Tests. A supervisor passcode is needed to enter the Supervisor menu.
Run applicable built-in tests, including keypad test, LED test, LCD test, RFU indicator test, audio test, printer test, battery test, fan test, and USB test if applicable.
Expected outcome: Each built-in device test passes or produces the expected response.
Remove from service if buttons, display, RFU indicator, alarms/audio, printer, battery function, fan, or USB function fail and cannot be corrected.
4. Perform ECG Leads and Heart Rate Tests
Using the ECG simulator and appropriate ECG cable, test 3-lead, 5-lead, and 12-lead cables as applicable.
Verify no ECG lead fault when leads are connected, ECG lead fault displays within 3 seconds when a lead is disconnected if configured, heart rate displays 120 ± 4 bpm when simulator is set to 120 bpm, and HR alarm responds to configured low and high alarm conditions.
Expected outcome: Lead fault detection, heart rate display, and heart rate alarm functions pass.
5. Perform Power Supply Test
Using the battery current test fixture, power supply, and DMM, perform the power supply test per the service manual.
Verify off-state current is 0.583 mA to 0.770 mA.
Verify on-state stabilized current is 0.47 A to 1.25 A.
Expected outcome: Measured current is within manufacturer-listed limits.
Remove from service if current readings are outside limits or power behavior is unstable.
6. Perform Leakage Current Test
Perform leakage current testing using the facility’s leakage tester instructions and the manufacturer’s leakage limits. The manual states to repeat leakage testing with accessories including MFC, external paddles, internal paddles, and anterior/posterior paddles, and to perform tests at the line-power voltage and frequency used in the installation.
Expected outcome: Leakage values are within the manufacturer-listed limits listed in the Electrical Safety Testing section below.
7. Perform Defibrillator Shock Test
Connect the X Series MFC to the defibrillator analyzer. Test delivered energy at 5 J, 50 J, 100 J, and 200 J.
Verify delivered energy is within the manufacturer-listed accuracy of ±15%.
Perform the 200 J timeout/disarm test. Verify the tone changes after 50 seconds and the unit internally discharges within 10 seconds, displaying DISARMED TIMEOUT.
Expected outcome: Unit charges, shock button illuminates, ready tone sounds, energy delivery is within tolerance, and timeout/disarm works correctly.
Remove from service if energy output is outside tolerance, charging fails, shock delivery fails, or timeout/disarm does not work correctly.
8. Perform Advisory Test
Using the defibrillator analyzer and ECG simulator, verify VF produces ANALYZING / SHOCK ADVISED, verify shock count is displayed after shock, and verify NSR produces ANALYZING / NO SHOCK ADVISED.
Expected outcome: Advisory function correctly distinguishes shockable and non-shockable rhythms.
9. Perform Synchronized Cardioversion Test
Use the defibrillator analyzer in synchronized cardioversion timing test mode. Apply a 1 mV ECG signal at 60 bpm. Enable Sync and charge to 200 J.
Expected outcome: Sync appears on the display, sync markers appear over R-waves, and R-wave to shock delay is less than 60 ms.
Remove from service if sync markers do not appear or sync delay is outside the manufacturer-listed limit.
10. Perform Pacer Test
Using the analyzer, test pacer output at the manufacturer-listed settings.
At rate 30 / output 10, verify pacer rate is 28.5 ppm to 31.5 ppm, pacer amplitude is 5 mA to 15 mA, and pulse width is 38 ms to 42 ms.
At rate 180 / output 140, verify pacer rate is 162 ppm to 198 ppm, pacer amplitude is 133 mA to 147 mA, and pulse width is 38 ms to 42 ms.
Expected outcome: Pacer output is within manufacturer-listed limits.
11. Perform Printer and Treatment Report Tests
Verify printer paper is installed. Start and stop recorder after approximately 10 seconds. Perform the treatment report test per the manual if required by facility policy.
Expected outcome: Printer output is clear and dark, and treatment summary prints the defib event and code marker snapshot.
12. Perform SpO2 / SpCO / SpMet Tests, If Equipped
Use the SpO2 simulator and appropriate Masimo sensor/test cable.
For SpO2-only units, verify the displayed SpO2 values at 70%, 80%, and 90% simulator settings are within the manufacturer-listed ranges, and pulse rate reads 60 ± 3 bpm.
For units with SpCO or SpCO / SpMet, perform the manufacturer-listed test points and verify displayed SpO2, SpCO, SpMet, and pulse rate values are within the listed ranges.
Expected outcome: Pulse oximetry and optional Masimo parameters pass applicable test points.
13. Perform EtCO2 Calibration and EtCO2 Checks, If Equipped
Perform annual EtCO2 calibration using 5% CO2 calibration gas. Confirm the date/time is correct before calibration because the date/time is used to update the next calibration date.
Expected outcome: Calibration completes with CALIBRATION DONE-OK. The manual lists this calibration as required for annual calibration.
Calibration check expected outcome: Unit displays VERIFICATION DONE - OK and measured gas reading is 4.8 to 5.2 Vol%.
EtCO2 functional test expected outcome: CO2 trace appears and waveform changes when gently blowing into the airway adapter.
14. Perform IBP Test, If Equipped
Use an IBP simulator with accuracy better than ±1 mmHg. Test P1, P2, and P3 channels as applicable.
Expected outcome: At 0 mmHg, display reads 0/0 ±2. At 200 mmHg, display reads 200/200 ±5.
15. Perform NIBP Calibration Check and NIBP Tests
Perform the annual NIBP calibration check using an NIBP simulator and dual-lumen hose/test fixture.
Verify at 50 ±5 mmHg, 150 ±5 mmHg, and 250 ±5 mmHg that the primary transducer agrees within 3 mmHg and the safety transducer agrees within 4 mmHg.
Then perform the NIBP leak test, deflation test, inflation test, and NIBP simulator functional test.
Expected outcome: NIBP leak test leak rate is ≤ 5 mmHg. Deflation test pressure drops below 15 mmHg within 10 seconds. Inflation test pressure exceeds 210 mmHg in less than 7 seconds. NIBP simulator readings are within ±10 mmHg of expected simulator performance.
16. Perform Temperature Test, If Equipped
Use an IBP / temperature simulator. Test T1 and T2 channels as applicable.
Expected outcome: Displayed temperature is within 0.2°F or 0.1°C of the simulator setting.
17. Perform Optional Connectivity / Audio Tests, If Required
Perform Wi-Fi and audio recording tests only if equipped and required by facility policy.
Expected outcome: Wi-Fi icon behavior and access point connection pass the listed test steps. Audio recording exports to USB and playback clearly captures the spoken test phrase.
Electrical Safety Testing
The service manual includes a manufacturer-listed leakage current test. It does not list a protective earth / ground resistance value in the provided maintenance test section.
Ground resistance
Ground resistance testing is facility-policy-dependent unless separately required by the facility’s electrical safety program.
Ground resistance measured in ohms, expected ≤ 0.5 Ω or facility/NFPA 99 criteria if different.
Leakage current
Manufacturer-listed leakage current limits:
ECG patient leakage: 10 µA normal, 50 µA single fault, 100 µA mains on applied part.
MFC patient leakage: 10 µA normal, 50 µA single fault, 100 µA mains on applied part.
Earth leakage: 2500 µA normal, 5000 µA single fault.
The manual states to repeat leakage testing with accessories including MFC, external paddles, internal paddles, and anterior/posterior paddles, at the line-power voltage and frequency used in the installation.
Touch/chassis leakage measured in microamps:
Facility limit used =
Result =
Pass / Fail =
Patient leakage measured in microamps:
Applied part/accessory tested =
Limit used =
Result =
Pass / Fail =
Earth leakage measured in microamps:
Limit used =
Result =
Pass / Fail =
Pass / Fail Criteria
PM passes if:
Physical inspection passes.
Applicable operational tests pass.
ECG, HR display, HR alarm, printer, treatment report, and installed parameter tests pass.
Defibrillator output is within manufacturer-listed tolerance.
Sync delay is less than 60 ms.
Pacer output is within manufacturer-listed ranges.
CO2 annual calibration passes, if equipped.
NIBP annual calibration check passes, if equipped.
Leakage current is within manufacturer-listed limits or facility-approved criteria.
No unresolved fault messages, failed tests, or unsafe physical conditions remain.
Remove from service if:
Housing, front panel, connectors, paddles, battery, or cables are damaged.
Any manufacturer-listed test fails and cannot be corrected.
Leakage current exceeds applicable limits.
Defibrillator output is outside tolerance.
Sync cardioversion timing fails.
Pacer output is outside listed limits.
CO2 calibration fails.
NIBP calibration check, leak, inflation, or deflation test fails.
Device displays unresolved service, defib, pacer, NIBP, SpO2, ECG, EtCO2, temperature, or power-related faults.
Copy/Paste CMMS Work Order Procedure
Use the manufacturer service manual, facility policy, and approved AEM program to determine the final PM interval and return-to-service requirements.