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Asset Type
Sequential Compression Device (SCD)
Manufacturer
Model
What This Guide Helps With
Sleeve not inflating, slow inflation, or low pressure caused by connection issues, garment problems, or external pneumatic faults.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove device from active patient use before troubleshooting.
- Expected: Patient placed on an alternate SCD or therapy paused safely.
Verify the Reported Issue
- Power on the unit and observe a full cycle.
- Expected: Confirm sleeve does not inflate, inflates slowly, or fails to reach pressure.
- Why it matters: Confirms true device issue vs normal cycle timing.
Check Sleeve (Garment) Connection
- Ensure tubing is fully seated in the pump port.
- Disconnect and reconnect firmly.
- Expected: Secure, tight connection with no looseness.
- Why it matters: Loose connections are the most common cause of no inflation.
- If corrected and inflation returns → stop troubleshooting.
Inspect Sleeve and Tubing for Leaks or Damage
- Check for holes, tears, kinks, or disconnected tubing.
- Run hand along tubing while unit attempts inflation.
- Expected: No air leaks, hissing, or visible damage.
- Why it matters: Air leaks prevent pressure buildup.
- If damaged → replace sleeve/tubing and retest.
Verify Correct Sleeve Type and Placement
- Confirm the correct garment type is used and properly wrapped on the limb.
- Expected: Properly fitted sleeve with secure closure.
- Why it matters: Improper fit or incompatible garment may prevent proper inflation or pressure sensing.
Check for Kinked or Obstructed Tubing
- Ensure tubing is not pinched under bed rails, mattress, or equipment.
- Expected: Tubing routed freely without obstruction.
- Why it matters: Blocked airflow reduces or prevents inflation.
- If corrected → retest and stop if resolved.
Observe Pump Operation (Sound and Air Output)
- Listen for pump cycling and feel for airflow at the port (briefly disconnect tubing if needed).
- Expected: Audible pump operation and detectable airflow.
- Why it matters: Confirms whether the pump is generating pressure.
- If no sound or airflow → likely internal pump or control issue.
Check for Alarm Indicators or Fault Messages
- Observe display or indicators for pressure or connection alarms.
- Expected: No active alarms during operation.
- Why it matters: System may inhibit inflation if it detects a fault condition.
Perform Power Cycle
- Turn the unit off, wait 10–15 seconds, then power back on.
- Expected: System resets and resumes normal cycling.
- Why it matters: Clears minor control or detection faults.
- If resolved → stop troubleshooting.
If the Problem Persists
If sleeve, tubing, and external causes have been ruled out, the issue is likely internal (pump failure, pressure sensor fault, or internal leak).
Remove the device from service, label Out of Service, and send for repair or bench evaluation.
Knowing when to stop prevents unnecessary risk and reflects proper troubleshooting.
Clinical Use Tip
Never troubleshoot an SCD while connected to a patient. Always transfer to a functioning device to maintain uninterrupted DVT prophylaxis.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported SCD sleeve not inflating on Flowtron Excel unit."
Cause
What was observed during troubleshooting.
Example:
"Leak identified in sleeve tubing causing inability to maintain pressure."
Resolution
What action was taken.
Example:
"Replaced sleeve and tubing set; verified normal inflation cycle and pressure."
Helpful Details to Include (If Known)
- Sleeve and tubing condition checked
- Connection verified and reseated
- Pump sound present or absent
- Alarm indicators observed
- Tubing routing inspected
- Final operational status confirmed
Final Thought
Effective troubleshooting starts with simple external checks like connections, tubing, and garments. Prioritizing patient safety and recognizing when the issue is internal ensures reliable equipment and proper escalation. Clear documentation supports future maintenance and accountability.
That is successful troubleshooting.