7325 Response SCD Owner`s & Service Manual
Contents
1. 8 Pneumatic Description 9 Port Identity aa acom 9 System Start Up Routine 9 e Pressure Monitoring 9 Operation amp Service Manual MODEL 7325 Table of Contents CONTINUED CALIBRATION TEST METHODS 10 Ankle Calibration Verification Procedure 10 Ankle Calibration Procedure 1 e Calf Calibration Verification Procedure 1 e Calf Calibration Procedure 12 General Function Test 13 DISASSEMBLY REASSEMBLY e Front Cabinet Removal 15 e Circuit Board 15 Circuit Board Installation 5 Compressor 15 Compressor Outlet Filter 16 16 e Unit Reassembly 6 SPECIFICATIONS 17 QUALITY SPECIFICATIONS 18 FIGURE 1 Diagram of Bed Hook Use2. 19 FIGURE 2 System View of Controls amp Indicators 20 FIGURE 3 Diagram of Power Cord Storage 21 FIGURE 4 Pneumatics Schematic 22 FIGURE 5 System Exploded View 23 FIGURE 6 Pneumatics amp Electrical Circuits 24 FIGURE 7 Electrical Schematic 25 Controller measures the time it takes for the legs to refill with blood and waits that period of time before the next compression is initiated If you need further information regarding the SCD RESPONSE Compression System or its clinical benefits please contact your Kendall Sales Representative 2 Severe arteriosclerosis or other ischemic vascular disease 3 Massive edema of legs or pulmonary edema from congestive heart failure 4 Extreme deformity of leg 5 Suspected existing deep venous thrombosis SCD response compression system Indications The SCD RESPONSE Compression System is designed to apply sequential compression to the lower limbs to help prevent deep vein thrombosis in patients at risk The System consists of the Model 7325 Controller the Tubing Set provided with the Controller and the use of single patient use SCD Sleeves purchased separately from this Controller The Sleeves compress the limbs to enhance venous blood movement After the compress
3. SCD response compression system Service and Maintenance connu 2 The two seven segment LEDS illuminate displaying 88 and then they go off 3 The Comfort Cooling LED illuminates The alarm sounds briefly and the Comfort Cooling LED goes off 4 The Cycle Monitor LEDs INFLATE and ASSESS illuminate then go off PHASE Il 45 mmHg set pressure is displayed During this phase the compressor flow is adjusted to a predeter mined start value PHASE The normal operating cycle begins with ankle inflation PRESSURE MONITORING The LED display that is used to display the 45 mmHg set pressure and the fault codes can also be used to display the actual pressure and trigger a Vascular Refill Detection measurement Press the hidden button the right end of the dark blue horizontal line on the control panel see Figure 2 and hold for two seconds This will cause the dis play to change to Pressure Monitor Mode The Controller will stay in this mode throughout the compression and deflation portions of the current cycle or the next com pression cycle if the button is pressed during the deflation portion of the cycle During compression the actual pres sure sensed by the ankle pressure transducer will be dis played The final ankle pressure will then be displayed for nine seconds while a Vascular Refill Detection measure ment is initiated The display will then read the number of seconds since
4. been compressed by the System This time is then used in subsequent cycles as the time between compressions The detection method is used when first powering up the System after it reaches set pressure and every thirty cycles thereafter If the System pressure was not between 43 and 47 mmHg the refill time will be measured at the next cycle that is within these System pressure specifications The method works best when the patient is still however it will accommodate movement The time will never be shorter than twenty seconds nor longer than sixty seconds between compressions If Comfort Cooling has been selected it will be disabled during the measurement of the refill time but will resume on the next cycle with no user intervention needed CYCLE MONITOR The SCD RESPONSE Compression System Controller has a Cycle Monitor which displays the status of the System s compression sequence The Monitor consists of two backlit panels which when illuminated read INFLATE and ASSESS During operation the INFLATE light will illumi nate when the Controller is inflating the Sleeves to com press the legs The ASSESS light will illuminate to indicate that the System 15 performing the Vascular Refill Detection assessment to determine the appropriate time between compression cycles This assessment is done once the Controller is powered on and has reached set pressure and also every 30 cycles after that point The ASSESS light will only illumi
5. compression syste Figure 3 Diagram of Power Cord Storage SU 0 22 Model 7325 Figure 4 Pneumatics Schematic COMPRESSOR MUFFLER AIR OUTLET ANKLE PRESSURE TRANSDUCER PRESSURE pee TRANSDUCER Cl BL COMPRESSOR AIR FLOW gt COMPRESSOR FILTER System Exploded View Figure 5 SCD compression system response Pneumatics amp Electrical Circuits Figure 6 Model 7325 SCD response compression system Figure 7 Electrical Schematic FUSE HOLDER POWER SUPPLY BOARD 2 TRANSFORMER VALVE ASSEMBLY de dc cues RED NEUTRAL 1 1A BLACK RED WHITE J4 J 24V LINE 1 7 GND a RED 2A BLACK RED 1 N FAN SWITCH 2 O g 5 gt 0 75 CHASSIS SL BLO GROUND 4 CONDUCTOR FLEX CABLE MEMBRANE SWITCH 6 PIN f VALVE MSW1 COMPRESSOR 9 CONDUCTOR 1 A ANKLE PUMP1 FLEX CABLE 2 A ANKLE SCD 3 PLUGGED response 4 Cr CALF TT 5 C CALF Es 6 T THIGH Vascular Refill Detection 7 THIGH 8 Vi VENT 1 9 v VENT 2 pde re J3 J1
6. Class 1 Portable not AP or APG Equipments Mode of Continuous Ingress of Water Protection Ordinary Compression Type Sequential Gradient Pressure Compression Cycle 11 Seconds Compression Decompression Time based upon Vascular Refill Detection measurement Set Pressure iia 45 mmHg Bed 100 cenar star ts Yes Power Cord 5 Yes Audible Visual Alarms Low Pressure High Pressure Internal Electronics Malfunction Sleeve Cooling Function THIS DEVICE 15 NOT SUITABLE FOR USE IN THE PRESENCE OF FLAMMABLE ANESTHETIC MIXTURES 5 This symbol indicates that this equipment 1 is with respect to the protection against electric shock gat 0 The UL Classification Mark for Canada and the United States Refer to accompanying documents MEDICAL ELECTRICAL EQUIPMENT WITH RESPECT TO ELECTRICAL SHOCK FIRE AND MECHANICAL HAZARDS ONLY IN ACCORDANCE WITH UL2601 1 CAN CSA C22 2 NO 601 1 lt 77FA gt A Model 7325 Quality Specifications MODEL 7325 The following information is a brief description of the tests performed on all SCD RESPONSE Compression System Controllers to ensure compliance to the prescribed System quality specifications and does not include clinical performance Burn In Requirements While operating in the Burn In Mode the Controller is run
7. J2 POWER CORD CPU PC BOARD A3 Healthcare KENDALL TYCO HEALTHCARE GROUP LP e 15 HAMPSHIRE STREET MANSFIELD MA 02048 PRINTED IN U S A e O 2004 TYCO HEALTHCARE GROUP LP e ALL RIGHTS RESERVED 040628 PRODUCT INFORMATION IN U S 1 800 962 9888 www tycohealthcare com 182339 ARTWORK NO 182339 REORDER CODE 7325 PACKAGE TYPE MANUAL SIZE 17 0 x 8 5 Folded to 8 5 x 11 0 Trim Size PAGE COUNT 32 Pages BOUND Saddlestitched INKCOLOR Black JOB NO 13969 Signature Graphics
8. compared to the pres sure applied to verify proper calibration exit Calf Calibration Verification Mode turn off the Controller If the Controller requires calibration proceed to step 7 of the Calf Calibration Procedure Unplug the Controller Reconnect the BLUE tubing Particular care should be taken to avoid stressing or kinking the tubing Carefully replace the front cabinet and turn the Controller on its face Check for proper placement of feet foam and tubing Refasten the five screws Do not over tighten SCD response compression system Calibration Test Methods comu GENERAL FUNCTION TEST Continued Press the Hidden and Comfort Cooling Buttons simul taneously while turning on the Controller The Hidden Button is located on the control panel at the very right end of the dark blue horizontal line This places the Controller in the Test Access Mode The display will show 01 Press the Hidden Button until 06 is on the display NOTE Test Access Modes 01 02 05 07 and 10 require dedicated manufacturing test equipment and are not intended for customer use Do not use During the procedure you will gently hold a finger near each air outlet port on the back of the Controller to verify air flow is present for each cycle at the correct port The order of the ports from left to right looking at the back of the Con
9. expected to require recalibration for several years or more of continuous use Complete the following steps to Calibrate the Calf Transducer 1 Unplug the Controller 2 Turn the Controller on its face and remove the five screws located on the rear cabinet 3 Carefully turn the Controller right side up so the front cabinet is facing you 4 Gently lower the front cabinet toward you until the components inside are accessible Make sure the var ious electrical and pneumatic connections between the CPU Board and the rest of the unit are not dislodged 5 Carefully disconnect the BLUE tubing that is attached to the Calf Pressure Transducer on the Control Board labeled BLUE 6 Plug the Controller into a wall outlet CAUTION ELECTRICAL SHOCK HAZARD Do not touch the electrical components on the chassis The PC Boards are not at line voltage 7 Place the Controller in the Calf Calibration Mode by pressing the Hidden and Comfort Cooling Buttons simultaneously while turning on the Controller The Hidden Button is located on the control panel at the very right end of the horizontal dark blue line This places the Controller in the Test Access Mode The dis play will show 01 Press the Hidden Button until 08 appears in the display NOTE Test Access Modes 01 02 05 07 and 10 require dedicated manufacturing test equipment and are not intended for customer use Do not use 8 Press the
10. make sure the Sleeves are not too tight If the fault reoccurs after re starting the Controller the Compressor Outlet Filter should be replaced or the Muffler should be cleaned If fault reoccurs after replacement the Controller should be returned to the manufacturer for repair This fault is detected if the ankle pressure exceeds 20 mmHg or the calf pressure exceeds 18mmHg during the last second of the vent cycle This fault is also detected if the calf pressure is less than 11mmHg for an entire compression cycle Check to make sure there are no kinks or leaks in the internal tubing The Controller should be returned to the manufacturer for repair These codes have not been implemented They have been reserved for future use If the Microprocessor cannot continue normal function the watchdog circuit will trip This causes the Controller to go into reset and restart normal operation If the cause of the disruption is still present the unit will continue to attempt to reset which will cause the alarm to sound once every second If the cause of the disruption was transient such as a high energy RF pulse the Controller will restart with the Comfort Cooling OFF FAULT TYPE Internal Diagnostic Two Internal Diagnostic Three Four Internal Diagnostic Five Internal Diagnostic Six Internal Diagnostic Seven Eight Nine WATCHDOG CIRCUIT CODE d2 d3 d4 d5 d6 d7 d9 whe
11. off and restart If the System displays the same fault ensure secure internal Tubing connections inside Controller If suspect substitute a new Tubing Set or pair of Sleeves Turn the Controller off and restart If the Controller displays the same fault the unit requires servicing Continued on next page 1 When the microprocessor detects a fault condition it interrupts the normal operation of the controller deactivates all valves displays a fault code and sounds an audible alarm This alarm will remain active until the Controller power switch is turned off SCD response El compression system Fault Conditions coue CODE FAULT TYPE DESCRIPTION SH System High Pressure has exceeded 90mmHg after 1 2 seconds of thigh portion of the inflation cycle e On first cycle Controller will switch to vent mode and adjust flow control appropriately e On subsequent cycles Controller will switch to the fault mode and display this code POTENTIAL CAUSES e Tubing Set is kinked e Sleeves are too tight CORRECTIVE ACTIONS e Straighten out kinked Tubing Set e Apply the Sleeves so that two fingers can fit snugly between each Sleeve and the patients leg e Turn the Controller off and restart If the Controller displays the same fault the unit requires servicing HI High The Controller is unable to bring the pressure down below 47mmHg for five consecutive cycles The pressure in the Sleeves is consistently
12. the end of the compression until it finds the appropriate venous refill time of the patient This new time is then displayed flashing while the sleeves are allowed to fully deflate At this point a new cycle will begin with the display reverting to the standard 45 mmHg pressure When the Controller is in the Pressure Monitor Mode a decimal point will flash on either side of the 7 segment display PNEUMATIC DESCRIPTION The rotary vane compressor driven by a low noise brush less DC motor runs only when needed Air can be directed from the compressor to the sleeve cooling chambers between compressions by pressing the Comfort Cooling button on the membrane switch panel This causes the compressor to turn on and the cooling valve to be ener gized during this phase Air flow through the valve manifold assembly is controlled by the motor control circuitry working with the brushless DC motor From the manifold assembly the air is gated to the sleeve chambers during the 11 second compression phase by energizing solenoid valves A C and T in a par ticular sequence At the end of this period all three sole noid valves are de energized simultaneously which dis connects the compressor from the Sleeves and allows the valves to release sleeve pressure to the atmosphere The ankle pressure transducer monitors the pressure in the ankle portion of the circuit and provides data input to the microprocessor for use in determinating the proper mot
13. Comfort Cooling Button to initiate the Calf Calibration Mode The Controller will now display the pressure in the line 9 The INFLATE LED will be illuminated Continued on page 13 CALF CALIBRATION VERIFICATION PROCEDURE Continued Plug the Controller into a wall outlet CAUTION ELECTRICAL SHOCK HAZARD Do not touch the electrical components on the chassis The PC Boards are not at line voltage Place the Controller in the Calibration Verification Mode by pressing the Hidden and Comfort Cooling Buttons simultaneously while turning the Controller The Hidden Button is located on the con trol panel at the very right end of the horizontal dark blue line This places the Controller in the Test Access Mode The display will show 01 Press the Hidden Button until 09 appears in the display NOTE Test Access Modes 01 02 7 05 07 and 10 require dedicated manufacturing test equipment and are not intended for customer use Do not use Press the Comfort Cooling Button to initiate the Calf Calibration Verification Mode The Controller will continuously display the pressure sensed at the Calf Pressure Transducer Connect the calibrated air pressure source to the Calf Pressure Transducer using a piece of tubing Apply 18 0 01 mmHg Read the pressure on the display Disconnect the tubing With no pressure applied read the display The display readings should be
14. Operation amp Service Manual MODEL 7325 SCD response compression system Healthcare KENDALL Operation amp Service Manual MODEL 7325 Table of Contents INDICATIONS 1 CONTRAINDICATIONS 1 CAUTIONS 1 GENERAL OPERATING INSTRUCTIONS Pre Operation Check 2 Use of Bed Hook 2 ii e 2 Automatic Pressure Adjustment 2 Vascular Refill Detection 2 ime 3 e Cycle Monitor 3 9 Power Cord 3 Sleeve Compatibility 3 FAULT CONDITIONS 4 Watchdog Circuit 6 SERVICE AND MAINTENANCE 7 e Warranty and Factory Service 7 7 e Electrical Safety 8 8 e Electrical Electronics Description
15. THCARE GROUP LP 98 6 Faichney Drive Watertown NY 13601 MAINTENANCE CAUTION Unplug the Controller before filter maintenance It is very important that the fan filter be cleaned frequently to ensure continued trouble free operation The Controller should never be run without the fan filter in place To clean the fan filter gently pry the fan cover off the left side of the SCD response compression system Service and Maintenance INTRODUCTION The SCD RESPONSE Controller contains no user service able parts User maintenance is covered in the MAINTE NANCE and CLEANING sections that follow All other maintenance is to be performed only by the user s appro priately qualified service technical personnel The service technician should be familiar with the oper ator s portion of this manual and the operating principles of the SCD RESPONSE Compression System The fault codes displayed by the Controller are useful in diagnosing service problems If a Controller is to be returned for service a description of the operating conditions and the fault code displayed should accompany the unit This manual describes service procedures to the board level with an exploded view of the Controller shown in Figure 5 If a component failure on a circuit board is sus pected the unit should be returned for service It is recom mended that the instrument be returned with the circuit board in place as removal of the board s involve
16. above the set pressure POTENTIAL CAUSES e Sleeves are too tight CORRECTIVE ACTIONS e Apply the Sleeves so that two fingers can fit snugly between each Sleeve and the patients leg e Turn the Controller off and restart If the Controller displays the same fault the unit requires servicing SP System Pressure The Controller has not controlled to 35 55mmHg for 12 consecutive cycles POTENTIAL CAUSES e Sleeves are too tight CORRECTIVE ACTIONS e Apply the Sleeves so that two fingers can fit snugly between each Sleeve and the patients leg e Turn the Controller off and restart If the Controller displays the same fault the unit requires servicing d1 Internal If a valve electrically malfunctions the microprocessor will detect Diagnostic One this condition shut the System off and display this code The Controller should be returned to the manufacturer for repair Model 7325 Fault Conditions comu DESCRIPTION Upon start up the microprocessor performs diagnostic tests If the Controller fails to pass all of these tests it will not start and this fault code will be displayed The Controller should be returned to the manufacturer for repair These faults are indicated only during special test conditions and should not occur during normal operation The Controller should be returned to the manufacturer for repair This fault is indicated if the pump speed is not what is expected Check to
17. aces the Controller in the Test Access Mode The display will show 01 Press the Hidden Button until 04 appears in the display NOTE Test Access Modes 01 7 02 05 07 and 10 require dedicated manufacturing test equipment and are not intended for customer use Do not use Press the Comfort Cooling Button to initiate the Ankle Calibration Verification Mode The Controller will continuously display the pressure sensed at the ankle pressure transducer Connect the calibrated air pressure source to the Ankle Pressure Transducer using a piece of tubing Apply 45 0 0 2 mm Hg Read the pressure on the dis play Disconnect Tubing With no pressure applied read the display The display readings should be compared to the pres sure applied to verify proper calibration To exit Ankle Calibration Verification Mode turn off the Controller If the Controller requires calibration proceed to step 7 in the Ankle Calibration Procedure Unplug the Controller Reconnect the RED tubing Particular care should be taken to avoid stressing or kinking the tubing Carefully replace the front cabinet and turn the Controller on its face Check for proper placement of feet foam and tubing Refasten the five screws Do not over tighten Calibration Test Methods See Disassembly Reassembly procedure before testing INTRODUCTION The SCD RESPONSE Compression S
18. ch the tubing Make sure the tube exiting the compressor is connected to the inlet side of the filter Direction of flow is from the compressor to filter to valves see Figure 4 and is identified on the filter housing avoid kinking any tubing VALVES All four valves are arranged in a 2 by 2 single manifold The valve that connects the pump to the Sleeve Cooling Vent Port is a 2 way normally closed type When energized it passes air to the port when de energized flow is blocked Three valves on the manifold connect air flow from the compressor to the Sleeve through the Ankle Calf and Thigh ports The Ankle and Thigh valves are 3 way nor mally closed type The Calf valve is a 2 way normally open type and is in series with the Ankle valve When energized in particular combinations these valves pass air to their respective Sleeve ports When de energized pump air is blocked and the air pressure in the Sleeves is released through the ports on the top of the Ankle and Thigh valves the Calf chamber depressurizes through the Ankle valve When the Controller is turned off for any reason all the valves are de energized allowing the Sleeves to deflate The coils on all four valves are removable by removing the nut at the top of the valve Any debris in the air lines could cause mechanical mal function of the valves If this is suspected the valve tubing should be disconnected and the valve flushed 3 NOTE It
19. connect the RED tubing that is attached to the Ankle Pressure Transducer on the Control Board labeled RED 6 Plug the Controller into a wall outlet CAUTION ELECTRICAL SHOCK HAZARD Do not touch the electrical components on the chassis The PC Boards are not at line voltage 7 Place the Controller in the Ankle Calibration Mode by pressing the Hidden and Comfort Cooling Buttons simultaneously while turning on the Controller The Hidden Button is located on the control panel at the very right end of the horizontal dark blue line This places the Controller in the Test Access Mode The dis play will show 01 Press the Hidden Button until 03 appears in the display NOTE Test Access Modes 01 02 05 07 and 10 require dedicated manufacturing test equipment and are not intended for customer use Do not use 8 Press the Comfort Cooling Button to initiate the Ankle Calibration Mode The Controller will now display the pressure in the line 9 The INFLATE LED will be illuminated 10 Connect the calibrated air pressure source to the Ankle Model 7325 Calibration Test Methods comu CALF CALIBRATION PROCEDURE Equipment Required A regulated air source with a con stant output pressure set at 18 0 mmHg 0 1 mm Hg NOTE The pressure transducers used in the SCD RESPONSE Compression System Controller are state of the art highly precise and virtually drift free devices It is not
20. ct a tubing set and pair of medium sleeves each wrapped around a 4in 10cm diameter PVC pipe Style 5330 or 6330 Sleeves should be used and wrapped such that two fingers can fit comfortably between the Sleeve and the pipe Ensure that the Tubing Set and Sleeves are leak free 6 Press the Comfort Cooling Button to initiate the leak test The Controller will inflate the ankle and calf cham bers of the Sleeves and then holds low pressure in the calf chamber for 40 seconds The Controller will beep after twenty seconds and again after forty seconds If a significant leak was detected the display will read LO If no leak was detected the Controller will beep and 06 will be displayed 7 Turn off the Controller 8 If a leak was detected check the tubing connections inside and outside the unit and repeat the test If a leak is still detected return the Controller for servicing 2 Disconnect all the pneumatic and electronic leads to the PC Boards 3 Remove the six mounting screws located on the CPU Board 4 Carefully slide the Power Board out of the Controller from between the compressor and top of rear cabinet CAUTION Components on the PC Boards should not be removed or replaced If a circuit board is suspected of being faulty the unit should be returned for repair by calling the toll free service number 800 765 4324 CIRCUIT BOARD INSTALLATION CAUTION Use a grounded strap when handling an
21. d with a clean dry cloth afterward Do not immerse in water Do not use prod ucts containing ammonium chloride or acetone as those chemicals will degrade the integrity of the case The SCD RESPONSE Compression System cannot be effec tively sterilized by liquid immersion autoclaving or ETO sterilization as irreparable damage to the System will occur ELECTRICAL ELECTRONICS DESCRIPTION The electronics of the Controller are located on two PC boards see Figures 6 and 7 There is no high voltage on the PC boards The first board can be found behind the membrane switch panel in the front cabinet This is the CPU board which contains the LEDs and associated electronics which dis play information about the state of the System during normal operation as well as in the fault mode or the var ious calibration and diagnostic modes This board also contains the pressure transducers the microprocessor the alarm and the valve control The second board is the Power board It contains voltage regulation circuits analog conditioning circuits and motor control circuitry Operator input is provided through the membrane switch panel Component or Controller failure will result in de energizing the valves and the compressor This will release pressure from the attached leg sleeves Controller Carefully remove the filter from the fan cover and brush loose dust and lint from the surface Wash the filter in a mild detergent solution d
22. ed on the back of the unit 2 With the Controller standing upright and facing you carefully lower the front cabinet toward you 3 Note the location and orientation of the connectors from the rear cabinet components on the CPU Board Remove the connectors by gently pulling on each indi vidual connector Some connectors have locking clips that must be gently squeezed to disengage 4 Very gently disconnect the RED and BLUE tubing at the pressure transducers on the CPU Board CIRCUIT BOARD REMOVAL The CPU Board is located on the front cabinet The Power Board is located on the rear cabinet directly above the compressor CAUTION Use a grounded strap when handling any elec tronic components 1 Note the location and orientation of all the pneumatic and electrical connections to the PC Boards see Figure 7 Label cables and tubing if necessary Model 7325 Disassembly Reassembly CONTINUED with filtered compressed air through the port while energizing the valves respectively from a 24 volt supply Filtration of incoming air guards against debris entering the compressor If debris is present it may indicate a Failure to clean the filters when needed b Physical breakdown of some component of the pneumatic circuit for example degradation of a section of tubing UNIT REASSEMBLYG 1 Place the rear cabinet with the complete chassis installed on the bench in front of you with the front of the Con
23. for 48 hours to enhance unit reliability Visual Attributes Inspection 4 1 Case parts appearance and alignment 4 2 Labeling Final Product Inspection Final release criteria utilizes 100 testing of Controllers for the following 5 1 Calibration 5 2 Air flow levels 5 3 Cosmetic defects 3 0 4 0 5 0 Electrical Tests 1 1 Power and Control Printed Wiring Board Assemblies The boards are tested on a board test fixture for the following functions 1 1 1 Individual component integrity 1 1 2 Component installation 1 1 3 Board calibration 1 2 Controller 1 2 1 Correct sequential activation of INFLATE and ASSESS LEDs 1 2 2 Comfort Cooling Button and LED function 1 2 3 Dielectric Voltage Withstand Test Hi Pot 1 2 4 Power Switch function 1 2 5 Indicator lights and button functions Pneumatic Functional Tests 2 1 Controller calibration at 45 2mmHg 2 2 Airflow supporting compression in the ankle calf and thigh 2 3 System high pressure fault detection 2 4 System low pressure fault detection 1 0 2 0 compression syste Figure 1 Diagram of Bed Hook Use 20 Model 7325 Figure 2 System View of Controls Indicators SET PRESSURE NDICAI INFLATE ASSESS LE HIDDEN B WER SWITCH BUTTON POWER CORD
24. g the Controller 2 Turn the Controller on its face and remove the five screws located on the rear cabinet 3 Carefully turn the Controller right side up so the front cabinet is facing you 4 Gently lower the front cabinet toward you until the components inside are accessible Make sure the var ious electrical and pneumatic connections between the CPU Board and the rest of the unit are not dis lodged 5 Carefully disconnect the BLUE tubing that is attached to the Calf Pressure Transducer on the Control Board labeled BLUE Continued on page 12 ANKLE CALIBRATION PROCEDURE Equipment Required A regulated air source with a con stant output pressure set at 45 0 mmHg 0 2 mmHg NOTE The pressure transducers used in the SCD RESPONSE Compression System Controller are state of the art highly precise and virtually drift free devices It is not expected to require recalibration for several years or more of continuous use Complete the following steps to Calibrate the Ankle Transducer 1 Unplug the Controller 2 Turn the Controller on its face and remove the five screws located on the rear cabinet 3 Carefully turn the Controller right side up so the front cabinet is facing you 4 Gently lower the front cabinet toward you until the components inside are accessible Make sure the var ious electrical and pneumatic connections between the CPU Board and the rest of the unit are not dis lodged 5 Carefully dis
25. ion the Contraindications The SCD RESPONSE Compression System may not be recommended for patients with the following 1 Any local leg condition in which sleeves would interfere such as a Dermatitis b Vein ligation immediate postoperative Gangrene d Recent skin graft Cautions 1 When this device is used in the Operating Room keep Comfort Cooling OFF to maintain air quiescence 2 Federal U S A law restricts this device to sale by or on the order of a physician 3 Explosion Hazard Do not use in the presence of flammable anesthetics WARNING Do not attempt to repair or replace broken tubing connectors as hazardous inflation of the sleeves may occur Covered by one or more of the following patents U S PAT NOS 5 031 604 5 876 359 5 022 387 6 231 532 Des 374 931 Other Patents Pending The use of a pneumatic compression pump with an intermittent pneumatic compression garment to measure venous fill time in a limb without permission from Kendall may constitute infringement of Kendall s U S Patent No 6 231 532 Model 7325 General Operating Instructions of the legs by the milking action of the Sleeves all three chambers of the Sleeve are allowed to deflate while the legs refill with blood NOTE When the Controller is turned on the Sleeve Cooling will be off To activate Cooling press the Comfort Cooling Button while the machine is operating The Comfort Cooling LED will ill
26. is recommended before case reassembly that any disassembly which involves the electrical or pneumatic circuit requires a recalibration See Calibration Procedures ida Hospital Grade Plug psa 6 inches 0 decane 103 4 inches o 41 2 inches 9 3 lbs 115 VAC 86 VA 60 Hz Length 13 3 8 inches Width 11 inches Depth 103 8 inches ii 12 6 lbs o Included Rt Attached to unit under handle ada Included 0 to 50 C Cycle Monitor Power Controller Height Controller Width Controller Depth Weight gt Power Requirements Shipping Unit Shipping Case Dimensions Shipping Weight Tubing Set Operating Instructions Operation amp Service Manual Transport amp Storage If the user suspects that the environmental conditions for transport and storage have been exceeded return the unit for service SCD response compression system Specifications MODEL 7325 UL Listing Mechanical Electrical Equipment 1 Classified with respect to electrical shock fire and mechanical hazards only in accordance with UL 2601 1 UL Classifed File 192350 2 Classified with respect to electrical shock fire mechanical and other specified hazards only in accordance with CAN CSA 622 2 NO 601 1 lt 77 gt UL Device Classification
27. mHg set point in System software The ASSESS LED will be illuminated Disconnect the tubing With no pressure applied press the Comfort Cooling Button This will record the 0 mmHg set point in System software Turn the Controller off Reconnect the BLUE tubing Particular care should be taken to avoid stressing or kinking the tubing Carefully replace the front cabinet and turn the Controller on its face Check for proper placement of feet foam and tubing Refasten the five screws Do not over tighten CAUTION If the Comfort Cooling Button is pressed inadvertently during the Calibration other then when specified in steps 8 11 and 13 the Controller must be recalibrated GENERAL FUNCTION TEST 10 The following describes a General Function Test which can be used to exercise the Controller This test is not part of the normal testing and maintenance routine but can be used in the event of disassembly to verify The correct wiring and connection of the solenoid valves The correct orientation and connection of the pneu matic circuit There is no blockage or leaking in the pneumatic circuit Model 7325 Calibration Test Methods comu GENERAL FUNCTION TEST Continued The thigh valve will close and the Cooling valve will open The compressor will run at maximum flow for five seconds 4 The Compressor will beep waiting for setup of the leak detection arrangement 5 Conne
28. nate during those measurements During the time between cycles if the assessment is not being made these Monitor lights will not be illuminated 4 Model 7325 Fault Conditions Fault Messages CODE FAULT TYPE DESCRIPTION SL System Low There 15 less than 8mmHg pressure at the end of the first inflation cycle or at the end of two consecutive cycles thereafter POTENTIAL CAUSES e Tubing Set is not properly connected There is a leak or kinked tubing inside the Controller e There is a significant leak in the Tubing Set or Sleeves CORRECTIVE ACTIONS e Ensure proper Tubing Set connections Turn the Controller off and restart If the System displays the same fault ensure that internal Tubing connections are secure and Tubing 15 not kinked If suspect substitute a new Tubing Set or pair of Sleeves Turn the Controller off and restart If the System displays the same fault the unit requires servicing LO Low The System is unable to bring the pressure up above 43mmHg for five consecu tive cycles The pressure in the Sleeves is consistently below the set pressure POTENTIAL CAUSES e Tubing Set is not properly connected e Sleeves are too loose e Internal Tubing not properly connected There is a leak in the Tubing Set or Sleeves CORRECTIVE ACTIONS Ensure proper Tubing Set connections Apply Sleeves so that only two fingers fit snugly between each Sleeve and the patient s leg Turn the Controller
29. onnected to the Controller and the Sleeves Both Sleeves must be connected If the System can only be used on one leg e g amputee connect the second sleeve but leave it packaged in its plastic bag There are no kinks or sharp bends in the Tubing Set e The left and right sides of the Controller are unob structed for free air flow e The Controller power cord is plugged into a grounded AC receptacle of the correct voltage e No flammable anesthetic gases are present USE BED HOOK The SCD RESPONSE Compression System Controller fea tures a bed hook This feature may be used by placing the Controller on the footboard of the hospital bed with the Controller facing away from the patient see Figure 1 NOTE After placing the Controller on the footboard con firm that the Controller is securely held by the footboard and does not interfere with patient care OPERATION Turn the power switch on located on the lower right side of the Controller The Controller performs a self diagnosis and LED check upon start up The various LEDs will illuminate in sequence starting at the upper left area of the display panel and progressing to the lower right area The Controller then begins normal operation with ankle inflation See Figure 2 for the location of each control and indicator Normal operation begins with inflation of the ankle chamber of each of the Sleeves The inflation of the ankle chamber is then sustained while
30. or control PORT IDENTITY The Tubing Set connecting the Sleeves to the Controller is attached to the fitting on the rear of the Controller in the upper left hand corner as viewed from behind the Controller Inside this fitting are four ports which are from left to right ANKLE COOLING CALF and THIGH see Figure 4 SYSTEM START UP ROUTINE PHASE When the Controller is turned on a series of tests is commenced lasting three seconds 1 All LEDS illuminate and the alarm sounds for 0 5 seconds 2 Detection of inoperative LEDs and the audible alarm function is the user s responsibility The start up routine also tests microprocessor function and system memory If a fault condition is detected either a fault code will be displayed or the unit will repeatedly go into reset which will result in a long beep every second Model 7325 Carefully disconnect the RED Tubing that is attached to the Ankle Pressure Transducer on the Control Board labeled RED Plug the Controller into a wall outlet CAUTION ELECTRICAL SHOCK HAZARD Do not touch the electrical components on the chassis The PC Boards are not at line voltage Place the Controller in the Ankle Calibration Verifi cation Mode by pressing the Hidden and Comfort Cooling Buttons simultaneously while turning on the Controller The Hidden Button is located on the con trol panel at the very right end of the horizontal dark blue line This pl
31. ry thoroughly and rein stall making sure the filter material lies between the holding tabs of the fan filter cover Do not just drop the filter in front of the fan VENTILATION Obstruction of the left fan cover and right vents should be avoided Free flow of air is necessary to prevent overheating and premature component failure FUSES CAUTION Unplug the Controller before removing the fuse Blown fuses should only be replaced with 3AG Slo Blo fuses 0 75 ampere 250 volt If a fuse blows a second time it should be presumed that the Controller is defective and requires further service ELECTRICAL SAFETY CAUTION Be sure the Controller is disconnected from the power source before removing the front cover A potential SHOCK HAZARD exists when the front cover is removed even with the unit turned off Periodic inspection should include a resistance check from the power plug grounding prong to the metal chassis inside the instrument The chassis can be accessed by removing the fan cover This resistance should not exceed 0 2 ohm when tested in accordance with UL2601 1 clause 18 Protective Eathing If ground resistance exceeds this value or the insulation integrity of the unit has been compromised through mechanical damage the Controller should be returned to the Service Center for testing and repair The SCD RESPONSE Controller is designed to minimize the effects of uncontrolled electromagnetic interference and
32. s addi tional risk of mechanical damage and damage from elec trostatic discharge ESD WARRANTY AND FACTORY SERVICE The Kendall Healthcare Products Company warrants that your SCD RESPONSE Compression System is free from defective material and workmanship Our obligation under this warranty is limited to the repair of Controllers returned to the service address indicated at right transportation charges prepaid within one year of delivery to the original purchaser Specifically we agree to service and or adjust any Controller as required if returned for that purpose and to replace and repair any part which upon our examina tion is proven to have been defective This warranty does not apply to the Tubing Set or the individual disposable leg Sleeves or to equipment damaged through shipping tam pering negligence or misuse including liquid immersion autoclaving or ETO sterilization This limited warranty does not cover and is intended to exclude any and all liability on the part of the Company Model 7325 Service and Maintenance other types of interference When using the Controller avoid the use of equipment that causes erratic operation or degradation in performance CLEANING The Controller cabinet can be cleaned as necessary with a soft cloth dampened with water If necessary a mild disin fectant and or detergent can be used excess fluid should be avoided The Controller should be wipe
33. ssible Make sure the var ious electrical and pneumatic connections between the CPU Board and the rest of the unit are not dis lodged SCD response compression system Calibration Test Methods comu Pressure Transducer using a piece of tubing 11 With 45 0 0 2 applied press the Comfort Cooling Button This will record the 45 mmHg set point in System software 12 The ASSESS LED will be illuminated 13 Disconnect the tubing With no pressure applied press the Comfort Cooling Button This will record the 0 mmHg set point in System software 14 Turn the Controller off 15 Reconnect the RED tubing Particular care should be taken to avoid stressing or kinking the tubing 16 Carefully replace the front cabinet and turn the Controller on its face Check for proper placement of feet foam and tubing 17 Refasten the five screws Do not over tighten CAUTION If the Comfort Cooling Button is pressed inadvertently during the Calibration other than when specified in steps 8 11 and 13 the Controller must be recalibrated CALF CALIBRATION VERIFICATION PROCEDURE Equipment Required A regulated air source with a con stant output pressure set at 18 0 mmHg 0 1 mmHg NOTE The pressure transducers used in the SCD RESPONSE Compression System Controller are state of the art highly precise and virtually drift free devices Complete the following steps to verify Calf Calibration 1 Unplu
34. the calf chamber is also inflated Then the thigh chamber is inflated while the ankle and calf chamber inflations are maintained After this infla tion cycle is completed causing a movement of blood out SCD response compression system General Operating Instructions comu COMFORT COOLING The Comfort Cooling feature is provided to offer the most comfortable experience for the patient When the Comfort Cooling button is pressed the Comfort Cooling light will illuminate This will indicate that in subsequent cycles air will flow through the cooling chambers of the Sleeves onto the patient s legs while the chambers deflate between com pressions To deactivate the cooling option press the Comfort Cooling button again When Comfort Cooling is off the Controller s compressor will be off between com pression cycles POWER CORD STORAGE Power cord storage for the SCD RESPONSE Compression System Controller is provided by wrapping the power cord around the bed hook This is shown in Figure 3 SLEEVE COMPATIBILITY The SCD RESPONSE Compression System Controller 5 designed for use with SCD Sleeve Reorder 5330 5329 5480 5345 5336 6330 6329 6480 and 6345 Sleeves can be connected to the controller via the Tubing Set pro vided with the controller Additional or replacement Tubing Sets are available as Reorder 6328 Further instructions for Sleeve use is included with the packaging provided with the Sleeves
35. ther this limited warranty or any warranty implied by law for any indirect or consequential damages for breach hereof or thereof Except as expressly provided above in the limited warranty the Company hereby negates and disclaims all express and implied warranties including the warranties or merchantability and fitness for a particular purpose Some states do not allow the exclusion or limitation of inci dental or consequential damages so the foregoing limita tion or exclusion regarding damages may not apply Also this Limited Warranty gives you specific legal rights and you may also have other rights which may vary from state to state This service manual is intended for use as a guide to tech nically qualified personnel when evaluating instrument malfunctions lt is not to be construed as authorization to perform warranty repairs Unauthorized service will void the warranty Controllers requiring warranty repairs must be shipped pre paid and insured to the Service Center The Kendall Health care Products Company maintains service facilities with the capability to promptly repair the SCD RESPONSE Compression System Controller In the event of any service maintenance problem contact Customer Service The toll free number is 800 765 4324 If the instrument is to be returned for service please call the above number to obtain an authorization return number and send it prepaid and insured in the original carton to TYCO HEAL
36. troller is Ankle Cooling Calf and Thigh see Figure 4 The flow will gradually increase for the Ankle Calf and Thigh The flow will start a max imum and stop abruptly for the Cooling To initiate the test press the Comfort Cooling Button The ankle valve will open the Controller will beep and the compressor will run at minimum flow for five seconds Flow should be detected at the Ankle port as described earlier 4 The compressor will ramp up to maximum flow in two seconds The Controller will beep and remain at full speed for five seconds The calf valve will open the Controller will beep and the compressor will run at minimum flow for five seconds Flow should be detected at both the Ankle and Calf ports as described earlier 4 The compressor will ramp up to maximum flow in two seconds The ankle and calf ports will close and the thigh valve will open The Controller will beep and the com pressor will run at minimum flow for five seconds Flow should be detected at the Thigh port as described earlier The compressor will ramp up to maximum flow in two seconds The Controller will beep and remain at full speed for five seconds Continued on page 14 CALF CALIBRATION PROCEDURE Continued Connect the calibrated air pressure source to the Calf Pressure Transducer using a piece of tubing With 18 0 0 1 mmHg applied press the Comfort Cooling Button This will record the 18m
37. troller towards you 2 Place the front cabinet with the bottom edge of the front cabinet against the rear base The front cabinet should be toward you with the rear cabinet behind Reconnect all of the electrical connections in the proper location and orientation of the leads from the Controller components Replace the connectors by gently pushing straight in Reconnect the tubing on the pressure transducers the RED tubing should connect to the Ankle Pressure Transducer marked RED on the PCB the BLUE tubing to the Calf Pressure Transducer marked BLUE on the PCB Particular care should be taken to avoid stressing the fittings on the pressure transducers 3 Place the front cabinet over the rear cabinet base Carefully align the two halves making sure the rubber feet are in place and aligned properly Turn the closed Controller on its face and reinstall the five screws 4 Turn the Controller right side up and perform the General Function Test COMPRESSOR OUTLET FILTER Removal of the front cabinet exposes the compressor filter The filter is mounted below the compressor The filter is designed for long life In the event the filter becomes loaded flow will become obstructed and the Controller will repeatedly trigger a d5 LO or SL alarm When this occurs replace the filter as follows Remove the inlet and outlet tubes from the filter Take the filter off the Nylon hook pad replace with a new filter and then reatta
38. uminate when the option is on In the case of a fault condition the alarm will sound The appropriate fault code will be displayed and the System will shut down AUTOMATIC PRESSURE ADJUSTMENT The SCD RESPONSE Compression System Controller fea tures microprocessor controlled automatic pressure adjust ment This feature automatically sets the pressure to 45mmHg and maintains this set pressure even when the patient moves or changes position After the start up sequence the Controller will set itself and display 45 mmHg During the first few inflation cycles the Controller will adjust itself to meet the 45mmHg During the initial setting period the decimal points on each side of the 45 will appear the display will be 45 Within five cycles the Controller will stabilize between 43 and 47 mmHg and the decimal points will turn off leaving 45 displayed NOTE After the initial 45mmHg pressure is reached the Controller will continue to make small adjustments in order to maintain the 45 mmHg as part of normal operation VASCULAR REFILL DETECTION The SCD RESPONSE Compression System incorporates a Vascular Refill Detection method to customize the therapy for each patient s physiology The System measures the time it takes for the veins in the legs to refill after having PRE OPERATION CHECK Before using the SCD RESPONSE Compression System on the patient verify that e The Tubing Set is properly c
39. y elec tronic components 1 Carefully align the CPU Board with the mounting bosses and fasten the six mounting screws 2 Carefully slide the Power Board into the Controller between the compressor and top of rear cabinet COMPRESSOR The Rotary Vane Compressor is driven by a state of the art brushless DC motor Flow is controlled by adjusting the rotational speed of the motor The higher the speed the greater the flow The motor control circuit which controls the motor speed is located on the Power Board and is not integral to the motor on the Compressor NOTE The Compressor used in the instrument is nota user serviceable component Special jigs and fixtures are required to ensure proper alignment during reassembly Do not disassemble Do not oil SCD response compression system Disassembly Reassembly FRONT CABINET REMOVAL CAUTION SHOCK HAZARD Disconnect line cord from the power supply CAUTION Disassembly of the unit and particularly the disconnection of pneumatic and or electronic components can disrupt the function and calibration of the instrument It is strongly recommended that the Calibration and General Valve Function Tests be performed upon reassembly ESD WARNING Unit should only be opened by person trained in ESD methods and equipment Refer to Figures 5 and 6 located in the Appendix 1 To remove the front cabinet place the Controller on its face and remove the five screws locat
40. ystem Controller has a special test modes for ankle and calf pressure transducer Calibration Verification and Calibration and a general function test that can verify microprocessor solenoid valve and pneumatic functionality 1 Factory calibration certification is void if the unit is opened 2 The unit should only be opened by persons trained in Electrostatic Discharge prevention methods and equipment 3 The ankle pressure transducer labeled RED on the PCB and connected by red tubing senses the pressure in the ankle chamber of the sleeve and is used to control System pressure 45 mmHg 4 The calf pressure transducer labeled BLUE on the PCB and connected by blue tubing senses the pressure in the calf chamber of the sleeve and is used only during Vascular Refill Detection measurement ANKLE CALIBRATION VERIFICATION PROCEDURE Equipment Required A regulated air source with a con stant output pressure set at 45 0 mmHg 0 2 mmHg NOTE The pressure transducers used in the SCD RESPONSE Compression System Controller are state of the art highly precise and virtually drift free devices Complete the following steps to verify Ankle Calibration 1 Unplug the Controller 2 Turn the Controller on its face and remove the five screws located on the rear cabinet 3 Carefully turn the Controller right side up so the front cabinet is facing you 4 Gently lower the front cabinet toward you until the components inside are acce
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