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What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting a STERIS AMSCO 3085 SP surgical table when the table powers on but movement functions (e.g., raising/lowering, tilting, lateral adjustments) do not operate. Common symptoms include:
- Table powers on, but no movement occurs with hand or foot controls
- Indicator lights for movement functions may illuminate but table does not respond
- Audible clicks from motors absent or inconsistent
Focus is on external and easily verifiable issues before assuming internal failure.
Step-by-Step Troubleshooting
Verify Power to the Table
- Confirm the main power switch is on and that the table powers up (indicator lights on).
- Check that the outlet is live using a known good device or outlet tester.
Rationale: Table functions require consistent AC power; insufficient voltage can cause movement failure.
Inspect Fuses and Circuit Breakers
- Check the table’s main fuse or internal circuit breaker (if externally accessible) for blown fuses or tripped breakers.
- Replace or reset as needed.
Rationale: A blown fuse may prevent motors from receiving power even if the table powers on.
Examine Foot and Hand Controls
- Confirm connectors are fully seated and free of debris.
- Inspect for visible damage to cords, plugs, or control housings.
- Swap with a known working control (if available) to rule out a faulty controller.
Rationale: Many movement issues are caused by defective hand or foot controls.
Check Motor and Actuator Connections
- Visually inspect external motor wiring and connectors for looseness or damage.
- Ensure all accessible plugs on actuators are fully seated.
Rationale: Loose connections or damaged cables can prevent motor function without affecting power indicators.
Test for Locking Features or Safety Interlocks
- Verify that any mechanical locks (e.g., transport locks, lateral lock) are disengaged.
- Confirm that any safety interlocks (e.g., weight sensors, side rails) are not preventing movement.
Rationale: Tables will disable movement when locks or interlocks are active.
Observe Indicator Lights During Function Attempt
- Press a movement control and note if lights blink, change color, or remain steady.
Rationale: Status LEDs may indicate motor fault or actuator issue, guiding next steps.
If the Problem Persists
Common external causes (power, controls, locks, connections) have been ruled out. Table movement functions likely have an internal electrical or motor failure.
Action:
- Remove the table from service.
- Label it as Out of Service.
- Send for manufacturer repair or internal bench evaluation.
Knowing when to stop is critical to prevent further damage or patient risk.
Clinical Use Tip
- Do not attempt patient positioning on a table with inoperative movement.
- Move the patient to an alternative table before troubleshooting.
- Troubleshoot only when no patient is on the table and safety is ensured.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Table powers on, but no movements respond to hand or foot controls.”
Cause
What was observed during troubleshooting.
Example:
Verified AC power is present, outlet functional, controls connected, and safety interlocks disengaged. Motors did not respond; external checks normal.
Resolution
What action was taken.
Example:
Table removed from service, labeled Out of Service, sent for repair/bench evaluation.
Helpful Details to Include
- AC outlet tested
- Hand and foot controls checked/swapped
- Indicator lights observed during function attempt
- Mechanical locks/interlocks disengaged
- Any unusual sounds or lack thereof noted
- Final device status: Out of Service, awaiting repair
Final Thought
Patient safety is paramount. Logical, stepwise troubleshooting allows identification of issues without unnecessary internal tampering. Escalation to repair ensures the table is restored safely and reliably. Accurate CCR documentation supports future preventive maintenance and accountability.
That is successful troubleshooting.