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Asset Type
Fluoroscopy / Interventional System
Manufacturer
Model
What This Guide Helps With
Troubleshoots cooling, fan, or temperature warnings caused by blocked airflow, room conditions, heavy use, contamination, or cooling-system problems.
Step-by-Step Troubleshooting
1. Protect the Patient and Stop Unsafe Operation
If the system reports an overtemperature condition, produces unusual heat, burning odor, smoke, or abnormal fan noise, stop clinical use when safely possible. Transfer the procedure to alternate equipment when necessary.
If smoke, arcing, or burning odor is present, remove power according to emergency procedures and escalate immediately.
Expected outcome: The system is no longer operated under potentially unsafe thermal conditions.
2. Confirm the Exact Thermal Symptom
Determine whether the complaint is a displayed temperature warning, unusually loud fan, fan not running, repeated shutdown, excessive cabinet heat, or a condition occurring only after extended operation.
Expected outcome: The type and timing of the cooling problem are clearly identified.
3. Inspect External Airflow
Check externally accessible ventilation openings for blockage by drapes, covers, equipment, carts, dust buildup, or room objects. Maintain appropriate clearance according to facility and manufacturer guidance.
Do not remove covers to access internal fans.
Expected outcome: External airflow paths are unobstructed. If clearing a blockage resolves the condition, allow the system to stabilize and continue verification.
4. Check Room Environmental Conditions
Determine whether room cooling is operating normally and whether the space is unusually warm. Check for recent HVAC failure, construction, relocated equipment, or heat-producing equipment near the imaging system.
Expected outcome: The room environment appears suitable for system operation. Facility HVAC concerns are escalated appropriately.
5. Inspect for Visible Contamination or Damage
Inspect accessible vents and exterior surfaces for heavy dust, contamination, liquid intrusion, or physical damage that may impair cooling.
Use only approved external cleaning methods.
Expected outcome: No external contamination or damage is interfering with cooling.
6. Allow the System to Stabilize
If the fault occurred after sustained operation and no unsafe condition is present, allow the system to cool according to normal operating procedures before restarting.
Do not repeatedly clear thermal faults and immediately resume heavy operation.
Expected outcome: The system returns to a stable normal temperature state without warning recurrence.
7. Observe Fan and Startup Behavior
During normal startup, listen for abnormal fan noise, grinding, repeated speed changes, or lack of expected airflow from accessible vents. Do not insert objects into vents or attempt to manipulate internal fans.
Expected outcome: Cooling airflow appears normal and no abnormal external indication is present.
8. Perform Final Functional Verification
Operate the system through an appropriate nonclinical functional check and observe for recurring temperature warnings, unexpected shutdowns, or abnormal fan behavior.
Expected outcome: The system remains stable without cooling or overtemperature faults. If successful, troubleshooting can stop.
If the Problem Persists
Persistent cooling or overtemperature faults after external airflow, room conditions, contamination, and operating state have been checked may involve internal fans, temperature sensing, cooling assemblies, power electronics, internal airflow, or another service-level issue.
Remove the system from service, label it Out of Service, and arrange qualified service evaluation using Canon documentation and approved test equipment. Do not operate a system that repeatedly overheats.
Following repair, verify cooling operation, system stability, imaging function, and any manufacturer-required post-service tests before return to clinical use.
Knowing when to stop external troubleshooting and escalate is proper troubleshooting.
Clinical Use Tip
Do not cover equipment vents with sterile drapes, supplies, or stored accessories during lengthy interventional procedures.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported that the Canon Ultimax-i displayed a temperature warning during operation."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found an external ventilation opening obstructed by stored equipment."
Resolution
What action was taken.
Example:
"Clinical Engineering cleared the ventilation area, allowed the system to stabilize, and verified normal operation without recurrence of the warning."
Helpful Details to Include (If Known)
- Exact warning or symptom
- Duration of use before fault
- Room temperature concern
- Vent obstruction
- Fan noise or airflow
- Dust or contamination
- Recent HVAC issue
- Unexpected shutdown behavior
- Result after cooldown
- Final system status
Final Thought
Thermal faults should never be dismissed or repeatedly reset. Start with external airflow and room conditions, verify stable cooling before reuse, and escalate recurring faults rather than assuming continued operation is safe. Document both the environmental findings and final test.
That is successful troubleshooting.