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What This Guide Helps With
Troubleshoots short battery operation or unexpected power loss caused by depleted cells, poor contacts, battery installation, environmental conditions, or pump power faults.
Step-by-Step Troubleshooting
1. Protect the Patient
If the pump unexpectedly loses power or cannot provide reliable battery operation, remove it from active therapy and move the patient to another verified device as clinically appropriate.
Expected outcome: Patient therapy no longer depends on an unreliable power source.
2. Confirm the Power Complaint
Determine whether the pump shuts off suddenly, gives low-battery indications sooner than expected, resets when moved, or operates normally on external power. Record the circumstances rather than assuming a runtime specification.
Expected outcome: The failure pattern is identified as rapid depletion, intermittent contact, or general power loss.
3. Inspect the C-Cell Batteries
Remove the batteries according to normal handling practices and inspect for leakage, swelling, corrosion, contamination, mismatched cells, damaged wrappers, or obvious depletion. Do not use damaged batteries.
Expected outcome: Only suitable, undamaged batteries are used for testing. If replacing questionable cells resolves the problem, troubleshooting can stop after verification.
4. Verify Battery Installation
Confirm both C-cell batteries are installed with correct orientation and are seated firmly. Inspect the battery compartment and accessible contacts for contamination, corrosion, or mechanical damage.
Expected outcome: Batteries make stable contact and the compartment is clean and intact. If correcting installation restores reliable power, the issue is resolved.
5. Test With Known-Good Batteries
Install a matched known-good set of suitable C-cell batteries and operate the pump in a controlled bench setting.
Expected outcome: Stable operation with known-good cells indicates the original batteries were the cause. If power remains unstable, continue troubleshooting.
6. Compare External-Power Operation
Where appropriate, operate the pump using an approved external power source and compare behavior. Do not assume normal external-power operation proves the battery circuit is functional.
Expected outcome: The relationship between battery operation and external power is clearly established. A fault limited to battery operation should be documented for further evaluation if external checks do not resolve it.
7. Check for Movement-Related Power Loss
With the pump on a bench and not connected to a patient, observe whether ordinary handling causes power interruptions. Do not strike, shake, or stress the device.
Expected outcome: Normal movement does not interrupt power. Any reproducible intermittent power loss requires removal from service.
8. Inspect for Abnormal Heat or Damage
Check the battery compartment, housing, and power connections for unusual heat, odor, discoloration, liquid intrusion, or impact damage.
Expected outcome: No unsafe physical condition is present. Any heat, odor, leakage, or damaged power component requires immediate removal from service.
9. Perform Functional Verification
Using known-good batteries, confirm stable startup, operation, controls, alarms, and power transitions appropriate to the available approved procedures.
Expected outcome: The pump maintains reliable operation through the functional test. If successful, troubleshooting can stop.
10. Escalate Persistent Battery or Power Faults
If known-good batteries deplete abnormally, battery operation remains intermittent, or the pump loses power unexpectedly, stop external troubleshooting.
Expected outcome: A potentially unsafe internal power condition is routed for qualified service.
If the Problem Persists
Battery quality, orientation, seating, accessible contacts, environmental damage, and basic external-power comparison have been checked. Remaining causes may involve internal power circuitry, battery-contact assemblies, current draw, electronics, or another service-level issue.
Remove the pump from service, label it Out of Service, and send it for repair or bench evaluation using appropriate manufacturer documentation and approved test equipment. Only qualified personnel should perform internal repairs. Complete required return-to-service testing before clinical use.
Knowing when intermittent power requires escalation is proper troubleshooting.
Clinical Use Tip
Unexpected pump shutdown during infusion is a patient-safety event even when the device powers back on afterward.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Nursing reported the CURLIN 6000 lost power shortly after being placed on battery operation."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found one C-cell battery was depleted and the installed pair was mismatched in condition."
Resolution
What action was taken.
Example:
"Installed a matched known-good battery pair, verified stable battery operation and normal pump function, and returned the device to service."
Helpful Details to Include (If Known)
- Battery type and visible condition
- Whether cells were matched
- Battery orientation
- Contact condition
- Low-battery indications
- Unexpected resets or shutdowns
- Movement-related behavior
- External-power comparison
- Heat, odor, corrosion, or leakage
- Known-good battery test
- Final device status
Final Thought
Treat unexpected power loss seriously, rule out the batteries and accessible contacts first, verify stability with known-good cells, and escalate any unexplained or intermittent shutdown.
That is successful troubleshooting.