Cardinal Health Kendall SCD Express

Asset Type

Sequential Compression Device (SCD)

Manufacturer

Cardinal Health

Model

Kendall SCD Express

Manual Reference

Kendall SCD Express Compression System Operation and Service Manual

Manufacturer Recommendation / AEM Status

Manufacturer-listed PM items

The provided manual lists a suggested preventive maintenance schedule in Section IV, Service and Maintenance.

• Inspect and clean fan screen: as required
• Verify pressure transducer calibration using Test Modes 03 and 04: after any repair and once per year
• Electrical safety tests: after any repair and once per year
• Leak Test using Test Mode 06: once per year
• General Function Test using Test Mode 07: once per year

Manufacturer-listed electrical safety requirement

The manual states that the system should be periodically inspected for electrical safety.

The manufacturer-listed grounding safety check is to measure resistance of the power cord ground from the plug to the IEC 60320 connector.

Manufacturer-listed limit: ground resistance must not exceed 0.1 ohm.

Important note: The manual states the SCD Express does not have an externally accessible ground on the device. The recommended grounding safety test is a resistance check of the power cord ground.

Manufacturer-listed service / repair cautions

• The controller contains no user-serviceable parts except user maintenance covered in the manual. Other maintenance is for appropriately qualified service technical personnel.
• Do not run the controller without the fan screen installed.
• If a fuse blows a second time, the controller should be presumed defective and requires further service.
• If ground resistance exceeds 0.1 ohm or insulation integrity is compromised through mechanical damage, return the controller to a service center for testing and repair.
• Kendall does not recommend repair of printed circuit boards in the field.

Manufacturer-listed part / reorder numbers

• Small thigh-length leg sleeve: 9545
• Small thigh-length tear-away leg sleeve: 9545T
• Medium thigh-length leg sleeve: 9530
• Medium thigh-length tear-away leg sleeve: 9530T
• Large thigh-length leg sleeve: 9780
• Large thigh-length tear-away leg sleeve: 9780T
• Medium knee-length leg sleeve: 9529
• Large knee-length leg sleeve: 9789
• Sterile thigh-length leg sleeve: 9736
• Regular foot cuff: 5897
• Large foot cuff: 5898
• Replacement tubing set: 9528
• Extension tubing set: 9595
• Shoulder strap: 9527
• Fuse type: 1.6 A, 250 VAC, 5 x 20 mm Slo-Blo fuse

Battery pack is optional. The manual says to contact Kendall Customer Service for a new or replacement battery; no battery part number is listed in the provided manual.

AEM note

If a facility performs this PM at a different interval or changes the listed activities, that should be handled under the facility’s approved AEM program, risk assessment, maintenance history, and applicable regulatory requirements.

What This PM Procedure Covers

• Visual and physical inspection
• Fan screen and ventilation inspection
• Power cord ground resistance check
• Startup LED and audible alarm check
• Pressure transducer calibration verification
• Leak Test using Test Mode 06
• General Function Test using Test Mode 07
• Optional battery condition check, if battery equipped
• Cleaning and final return-to-service check

Required Tools and Equipment

Only use tools appropriate for qualified service personnel.

• Electrical safety tester or low-resistance ohmmeter capable of measuring power cord ground resistance
• Regulated precision air source accurate to ±0.1 mmHg over 0 to 130 mmHg for pressure transducer calibration verification
• Tubing set
• Leg sleeves wrapped around appropriately sized leg forms for leak and performance testing
• Soft cloth dampened with water
• Mild disinfectant and/or detergent, if needed
• Clean dry cloth
• Brush for fan screen lint/dust removal
• Phillips screwdriver, if fan screen access or internal service access is needed
• ESD protection if internal electronic components are handled

Step-by-Step PM Procedure

1. Confirm Device Status

Action: Confirm the SCD Express controller is not in active patient use before removing it for PM.

Expected outcome: Device is available for inspection and testing without interrupting therapy.

Why it matters: The SCD Express provides intermittent pneumatic compression for DVT/PE prevention support.

2. Identify the Device

Action: Record the model, serial number, asset number, and whether the unit has the optional battery pack installed.

Expected outcome: Device identification is documented before PM work begins.

3. External Visual Inspection

Action: Inspect the controller housing, front membrane panel, buttons, LEDs, ports A/B, bed hook, power cord, cord capture door, and tubing connection area.

Expected outcome: No cracked housing, damaged buttons, missing parts, damaged ports, or unsafe cord condition.

Remove from service if: Housing damage, liquid intrusion, damaged power cord, compromised insulation, damaged connectors, or missing safety-related parts are found.

4. Fan Screen and Ventilation Check

Action: Inspect the fan screen and vents for dust, lint, blockage, or damage.

Expected outcome: Fan screen is installed, clean, and vents are unobstructed.

If cleaning is needed: Unplug the controller and remove the battery pack before fan screen maintenance. Brush loose dirt/lint from the fan screen and reinstall it correctly.

Do not return to service if: Fan screen is missing, fan area is blocked, or the controller shows signs of overheating.

5. Cleaning

Action: Clean the controller cabinet with a soft cloth dampened with water. Use mild disinfectant and/or detergent if needed. Avoid excess fluid. Wipe dry afterward.

Expected outcome: Exterior is clean and dry.

Do not use: Liquid immersion, autoclaving, ETO sterilization, ammonium chloride, acetone, or aromatic solvents. The manual states these can damage the system/case.

6. Power Cord Ground Resistance Check

Action: Measure resistance of the power cord ground from the plug to the IEC 60320 connector.

Expected outcome: Ground resistance does not exceed 0.1 ohm.

Result field:

Power cord ground resistance = ______ ohms
Pass / Fail = ______

Remove from service if: Ground resistance exceeds 0.1 ohm or insulation integrity is compromised through mechanical damage.

7. Startup LED and Audible Alarm Check

Action: Plug the controller into a properly grounded hospital-grade receptacle and power it on.

Expected outcome: Controller beeps and flashes all LEDs during startup sequence.

Verify startup indicators:

• Port A Leg, Port A Foot, Port B Leg, Port B Foot, Vascular Refill, Battery Status 1-3 illuminate green
• Port A Leg, Port A Foot, Port B Leg, Port B Foot, Service Required, Battery Status 1 illuminate red
• Error Code / Test Mode indicators 1-8 illuminate red
• Audible alarm function is present

Remove from service if: LEDs fail, audible alarm does not function, or service-required indicator remains active.

8. Enter Test Access Mode

Action:

• Plug controller into AC line power.
• Do not run service test modes on battery power.
• Press Port A and Port B configuration buttons at the same time while turning controller on.
• Use Port A button to cycle through test modes.
• Use Port B button to initiate the selected test.

Expected outcome: Unit enters test access mode and Test Mode indicators can be selected.

9. Pressure Transducer Calibration Verification - Test Mode 04

Action: Perform Test Mode 04 before any calibration attempt. Connect a regulated precision air source accurate to ±0.1 mmHg over 0 to 130 mmHg to the Bladder #1 location at Port A.

Manufacturer-listed verification points:

• 0 mmHg
• 18 mmHg ±0.1 mmHg
• 45 mmHg ±0.1 mmHg
• 130 mmHg ±0.1 mmHg

Expected outcome: For each range, Port A Leg and Port B Leg indicators illuminate green when supplied pressure is within the calibration range.

Do not recalibrate unless needed: The manual states the pressure transducer is highly precise and virtually drift-free, recalibration is rarely required, and Test Mode 04 should be performed before Test Mode 03.

Result field:

0 mmHg verification = Pass / Fail
18 mmHg verification = Pass / Fail
45 mmHg verification = Pass / Fail
130 mmHg verification = Pass / Fail

10. Pressure Transducer Calibration - Test Mode 03, If Needed

Action: Only perform Test Mode 03 if calibration verification indicates calibration is needed and qualified personnel are performing the work.

Required pressure points:

• 0 mmHg
• 18 mmHg ±0.1 mmHg
• 45 mmHg ±0.1 mmHg
• 130 mmHg ±0.1 mmHg

Expected outcome: New calibration values are recorded into memory and unit returns to Test Access Mode.

Note: Factory calibration certification is void if the case is opened.

11. Leak Test - Test Mode 06

Action:

• Attach tubing set connected to leg sleeves wrapped around appropriately sized leg forms.
• Enter Test Access Mode.
• Select Test Mode 06.
• Press Port B to begin Leak Test.

Manufacturer-listed operation:

• Controller inflates all bladders for Port A to 45 mmHg.
• Controller vents down to 5-7 mmHg.
• Unit holds pressure for 40 seconds.
• Pressure is read at 20 seconds and 40 seconds.
• If significant pressure drop occurs over the 20-second period, a Low Pressure alarm is triggered.
• If Port A passes, the test repeats for Port B.

Expected outcome: No Low Pressure alarm during leak test. Unit beeps and returns to Test Access Mode.

Result field:

Port A Leak Test = Pass / Fail
Port B Leak Test = Pass / Fail

12. General Function / Performance Test - Test Mode 07

Action:

• Attach tubing set connected to leg sleeves wrapped around appropriately sized leg forms.
• Enter Test Access Mode.
• Select Test Mode 07.
• Press Port B to begin.
• Follow prompts for Port A and Port B inflation cycles.

Expected outcome: Controller completes inflation cycle at Port A and Port B, verifies pump/valve performance, pressure delivery, and airflow through pneumatic circuit, then beeps and returns to Test Access Mode.

Result field:

Performance / General Function Test = Pass / Fail

13. Optional Battery Check, If Battery Equipped

Action: Verify battery indicators and charging behavior if the controller has the optional battery pack installed.

Manufacturer-listed battery details:

• Fully charged battery typically provides 6-8 hours of operation depending on sleeve configuration, sleeve application, and battery condition.
• New fully drained battery charges in approximately 4 hours with controller on standby.
• New fully drained battery charges in approximately 8 hours with controller powered on.
• Battery should be stored with at least 50% charge near 25°C / 77°F if prolonged storage is needed.

Expected outcome: Battery indicators behave normally and runtime is not extremely short.

Remove from service / service battery if: Battery runtime is extremely short, battery error occurs, battery cell failure is suspected, battery is damaged, or battery leakage is present.

14. Final Functional Startup Check

Action: Connect tubing and compatible garments or test sleeves. Start controller normally.

Expected outcome:

• Proper garment detection occurs.
• Correct port indicators illuminate green.
• Controller begins compression.
• No Service Required indicator.
• No unresolved alarm codes.
• No abnormal noise, overheating, or airflow issue.

Manufacturer-listed pressures:

• Leg sleeves: 45 mmHg set pressure
• Foot cuffs: 130 mmHg set pressure

Electrical Safety Testing

The manual does not provide a chassis/touch leakage current limit.

The manual does provide a manufacturer-listed power cord ground resistance test.

Power cord ground resistance measured in ohms from plug ground to IEC 60320 connector. Manufacturer-listed expected value ≤ 0.1 Ω:

Result =

Touch/chassis leakage measured in microamps:
Facility limit used =
Result =
Pass / Fail =

Note: The manual states there is no externally accessible ground on the device and recommends power cord ground resistance as the electrical safety test for proper grounding.

Pass / Fail Criteria

PM Pass Criteria

Pass PM if all applicable items are true:

• Housing, cord, ports, front panel, and bed hook are intact
• Fan screen is installed and vents are unobstructed
• Controller is clean and dry
• Startup LED sequence and audible alarm function are present
• Power cord ground resistance is ≤ 0.1 ohm
• Pressure transducer calibration verification passes
• Leak Test passes
• General Function / Performance Test passes
• No unresolved alarm, service-required indicator, overheating, or abnormal pneumatic issue
• Battery check passes, if battery equipped and included in facility PM

Remove From Service Criteria

Remove from service if any of the following are found:

• Ground resistance exceeds 0.1 ohm
• Insulation integrity is compromised by mechanical damage
• Power cord, plug, or IEC connector is damaged
• Fan screen is missing or ventilation is blocked
• Controller shows signs of overheating
• Startup LEDs or audible alarm fail
• Service Required indicator remains active
• Pressure transducer calibration verification fails and cannot be corrected
• Leak Test fails
• General Function / Performance Test fails
• Fuse blows a second time after replacement
• Battery is damaged, leaking, or has persistent battery error
• Housing is cracked, damaged, or shows liquid intrusion
• Any persistent alarm or fault remains after troubleshooting

Use the manufacturer service manual, facility policy, and approved AEM program to determine the final PM interval and return-to-service requirements.