On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Troubleshoots charging failures, removable battery recognition problems, unexpectedly short runtime, external power issues, and battery deterioration.
Step-by-Step Troubleshooting
1. Protect the Patient From Unexpected Loss of Power
If battery performance is questionable during transport or patient support, connect the VOCSN to a verified external power source and arrange alternate equipment before investigating further.
Do not intentionally discharge a suspect battery while a patient depends on the ventilator.
Expected outcome: The patient remains supported by a stable power source while battery troubleshooting occurs separately.
2. Confirm Which Battery or Power Source Is Affected
Determine whether the complaint involves:
- Internal battery
- Removable battery
- Both battery sources
- Failure to charge
- Failure to recognize the removable battery
- Rapid discharge
- Unexpected transition between power sources
Review the device's available battery and external power indications without changing therapy settings unnecessarily.
Expected outcome: The affected battery source and failure behavior are clearly identified.
3. Verify External Power Is Actually Available
Inspect the AC cord, approved power adapter, VOCSN power connection, and wall receptacle. Confirm external power is recognized by the device.
A battery cannot be properly evaluated for charging if the external source itself is intermittent.
Use an approved known-good external power adapter when available to isolate an adapter problem.
Expected outcome: The VOCSN receives stable external power and indicates that external power is connected.
If restoring the external power connection restores normal charging behavior, the issue is resolved after final verification.
4. Inspect and Reseat the Removable Battery
Remove the VOCSN from patient use before manipulating a suspect removable battery. Inspect the battery housing and mating area for contamination, cracks, swelling, damaged contacts, or other physical damage.
Reinstall the battery fully and verify that the VOCSN recognizes it.
Do not open, modify, or attempt cell-level repair of the battery.
Expected outcome: The removable battery is physically sound, securely installed, and recognized by the VOCSN.
If reseating resolves the recognition or charging problem, proceed to verification.
5. Compare With a Known-Good Removable Battery
When an approved known-good battery of the correct type is available, install it under controlled conditions.
Observe whether the known-good battery is recognized and charges normally.
Expected outcome: A known-good battery distinguishes a battery-specific problem from a device-side charging or recognition problem.
If the problem follows the original removable battery, replace that battery according to facility procedure.
6. Evaluate Runtime Under Controlled Conditions
After adequate charging, evaluate suspect short-runtime complaints using approved manufacturer procedures and an appropriate controlled test setup.
Consider recent storage history, battery age, repeated deep discharge, environmental temperature, and whether multiple therapies were active when the short runtime was reported.
Do not judge battery health solely from a brief bedside observation.
Expected outcome: Battery operation is repeatable and consistent with manufacturer requirements, or the battery is identified as unable to meet service expectations.
If replacement of a degraded removable battery restores acceptable performance, troubleshooting can stop after final verification.
7. Verify Power Transfer and Final Operation
Verify the VOCSN operates as intended on the applicable external, removable battery, and internal battery sources in accordance with manufacturer checkout procedures.
Confirm expected power-source indications and alarms occur when transitioning between sources.
Expected outcome: The VOCSN recognizes available power sources, charges appropriately, transitions correctly, and passes required checkout testing.
If these checks pass, the issue is resolved and troubleshooting can stop.
If the Problem Persists
If AC supply, external adapter, removable battery seating, and known-good battery substitution have been ruled out, the problem may involve internal battery deterioration, charging circuitry, power management, battery communication, or another service-level fault.
The VOCSN should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated using current Ventec Life Systems documentation and approved test equipment
- Repaired or configured only by qualified personnel
Do not open battery packs or proceed with unsupported internal repairs. Following corrective service, verify all applicable power sources, alarms, charging functions, and manufacturer checkout requirements before return to service.
Knowing when to stop external troubleshooting and escalate is proper troubleshooting.
Clinical Use Tip
Do not begin transport with a VOCSN when the expected battery reserve has not been verified for the planned transport conditions.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Respiratory Therapy reported that the VOCSN removable battery discharged much faster than expected during transport."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering confirmed that the removable battery had reduced usable runtime while a known-good battery operated normally in the same device."
Resolution
What action was taken.
Example:
"Replaced the degraded removable battery and verified battery recognition, charging, power-source transition, and functional operation before return to service."
Helpful Details to Include (If Known)
- Internal or removable battery involved
- External power indication
- Charger or adapter condition
- Battery recognition status
- Battery physical condition
- Approximate runtime reported
- Known-good battery comparison
- Active therapies during reported event
- Results after charging or replacement
- Final power-source verification
Final Thought
Battery complaints should be separated into external power, charging, recognition, and actual capacity problems before an internal fault is assumed. Maintain patient power continuity, use controlled comparisons, escalate unresolved charging faults, and document the verified results.
That is successful troubleshooting.