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1. 5 R108L 2000080000H0072 o PANEL BOARD KEY R A R118 5 ini ESE m sm G RHT US wo wu 2 m m m E m 2 mi R2 RGA gt mne oa R13 9028 ird Hm 102 t12 Sus 8 m U36 fa an s M P100 BE S R49 T PSOm m c PR adi wd a m m m mg 55 TP40 gt R8 mm um R103 TP7 R36 R54 074 ess P389 us cas 92 HN m m mim m E Tp mc Ii RR minm l 037 Rre
2. 18 ALARM LED 20 SW HOLD PGND 24 METER HI gt gt K METER LO ura D 0128 3 C105 Giu MC14490 STDBY SW 13 12 _ STDBY SWD 0120 0120 9 8 SELF TEST D 4HCAO7S KON P1417 at Q2 Q4 05 a7 Hi SEL MED SEL Lo se e127 2 3 co 2017 t gt gt srpev 12 STDBY Ds otu U31B BER TANCOS es re sw 56 m C106 TOS bo Power Reset T4HC14 R67 H MED swp 12 R69 619K RAS gt gt pis DSCHG cv RST THR TRG vec OUT 109555 fez _ gt reser y
3. BW cs 0 2 m SL 1NOOOOO00000002 o TP6 g v Ri Ro go go cague 518 m SN Nm W ug HHBH wo RM HE Ea ma EH 5 unl 2 m U3 nr EAE eS R104 HIHI a qu 58 W 2 ig mz z 24 Alma UP 102 rim HII Tp38 Ros max 6106 TP38 z2 inm BE RE 242 n nS m 019 Am TP26 PSG m TPM 5 mc m ON ALARM wp g 5 40 ri n R3 R09 m 9 xx H 020 032 025 RIS R S nuum Eu AE PEE unn 7 15 minim a U37 GND mim Rre li TEST L H l R23 C13 012 Du PNE HN 2 14 uu qi R116 imo 039 HN UU gx mo m a ES Cm ki E a HOSE SW ta A Figure 3 7 Locations for R104 R106 R116 A LED and SW1 44 3 Press the ON button then press the HI button 4 Adjust R116 until the DVM reads 0 473V 0 477V 0 475V nominal 20 EQUATOR Convective Warmer Service Manual 10 Reset the DIP switches on SW
4. 15 10 7 15 or SEL MED UT SEL Lo ur SEL CAMB UT SEL KATOT Swi46 ui9c 11 12 10 MED OT SEL z m KLO OT SEL 4 Troc roc C22 uon uec 3 IT 35s E Q4 95 a3 Q12 RST U28A T4HC08 9228 9220 2 R13 dien 6 44 0 TD 19288 74HC4020 FLASHER INDY MED LED 612 R117 NAJ Q LED 05 13 220 AMBLED 05 14 220 LED DRIVERS LED DRIVERS gt gt o sHe aL s U24A DE D 2 OT FLASH Figure E 1 Mode Select Control Schematic EQUATOR Convective Warmer Service Manual Appendix E Schematic Drawings Hose Disconnect Switch N O 22 11 2022 e RLMLS203 R5 1k e
5. mm m m m Ru R73 C4 Ri smo 034 Hm Rumu MO PR PRI 5 gt 4L 028 Su TP102 ton m Am 5 S lt HH E wi ud 2 gt s MT 17100 BEC 9 R49 HW g PSCm m c 1 7 P m TPM Wm fa gA m MM In 040 ng mes iE P39 ioe C8 U25 RIS R16 7 mm NEN nu m m TP29 mz lii I ae lI mi 037 m2 e R23 C130 TESTE M H m we Eu mm L1 L2 TP30 Rs m SW1 E NN us m HIH 2298 FPR rw m Cl3m 14 T E HOSE SW PA 4 Sy Figure 3 2 Locations for R101 TPM TPM R103 and METER 7 Check the control panel and verify that no LEDs are lit and both displays are blank EQUATOR Convective Warmer Service Manual 11 Chapter 3 Functional Test and Calibration Procedure Functional Tests Perform all 12 functional tests in the order they are presented in the following pages Be sure to read through each test to obtain an understanding of the steps involved in each individual procedure before starting Use the Functional Test and Calibration Procedure Checklist described earlier in this chapter as a guide and to record the test results Note When performing any forced overtemp check always start with the
6. 0 23 24 25 26 27 28 P N 80 04 019 60 14 005 60 24 016 77 00 018 60 40 048 64 02 066 64 02 064 77 00 910 66 02 010 66 02 011 66 03 015 66 03 013 66 03 014 62 37 009 62 07 034 66 04 009 70 02 102 70 02 103 72 06 029 77 00 016 77 00 901 77 00 904 70 06 025 77 00 911 60 23 039 60 23 045 60 23 005 60 23 043 62 23 030 SW5 HOSE7 SW5 HOSEN Contact Salesman 60 61 900 Description Air Filter Replacement Kit Power Supply Mains Filter 100V 115V 230V Receptacle Bead Assembly Membrane Switch Control Panel Air Outlet Plenum Microswitch Assembly Motor 3 Phase 100V 115V 230V Motor Driver Electronic Assembly 3 Phase 100V 115V 230V Heater 100V must also order gasket 62 37 009 Heater 115V must also order gasket 62 37 009 Heater 230V must also order gasket 62 37 009 Gasket Heater Cord Connector Lock Set Wire Loop and anchors Impeller Control Electronic Assembly Mains Electronic Assembly Pole Clamp Servo Connector Thermistor Input Connector Assembly Cable Assembly Mains to Power Supply Ribbon Cable Assembly Mains Distribution Cable Assembly Cable Assembly Mains amp Power Supply to Control Electronic Assembly F1 F2 115V Mains Fuse 5x20 10A 250V Time Lag F1 F2 230V Mains Fuse 5x20 5A 250V Time Lag F3 Fuse 5x20 1A 250V Time Lag F5 Fuse 5x20 2 5A TL 250V Time Lag Hose Elbow excluding NeoNatal Hose 7 Hose NeoNatal Power Cord Inter
7. EQUATOR Convective Warmer Service Manual vii Introduction Definition Catalog Number o lt 3 Serial Number Part Number Batch Code Authorized Representative in the European Community Manufacturer Date of Manufacture Quantity Protective Earth Ground Alternating Current Do Not Reuse Attention see instructions for use Electrical Shock Hazard Latex Free Caution Federal law U S A restricts this device to sale by or on the order of a physician Protective earth terminal Temperature limitation Use by gie viii EQUATOR Convective Warmer Service Manual Introduction Symbol Definition Recyclable Product Device has been tested by National Technical Systems a nationally recognized technical lab to meet U S requirements for safety CE Mark and Notified Body number 0473 indicates AMTAC Humidity limitation Sterilized using ethylene oxide Non sterile A CONTRAINDICATION A CAUTION A Contraindication statement alerts the user to conditions when the device should not be used A Caution statement alerts the user to conditions that may cause damage to the device WARNING A Warning statement alerts the user to conditions that may cause personal injury to the user or patient Service Information All service must be performed by Smiths Medi
8. 47 1 Ambient 47 x 1 36 C 33 1 40 37 1 44 41 1 Opens 70 3 Resets when power to the device is turned off 100V 10 50 11 10 115V 150 170 230V 600 650 36 1 40 1 44 1 EQUATOR Convective Warmer Service Manual 49 Appendix C Specifications and Reference Data Electrical Mains Power Input Protection Against Electrical Shock Mode of Operation Type of Current Ingress Protection Rating Fuse Ratings Control Electronic Assembly Fuse Ratings Mains Electronic Assembly Normal Polarity Reverse Polarity Open Supply Single Fault Ground Bond Test Switching Power Supply Assembly Hipot Test 50 100 VAC 50 60 Hz 8 7 Amps 115 VAC 50 60 Hz 8 05 Amps 230 VAC 50 60 Hz 4 0 Amps Class 1 Equipment Type BF Continuous Alternating IPX1 F4 400mA 230 VAC F1 line 5A TL F2 neutral 5A TL 100 115 VAC F1 line 10A TL F2 neutral 10A TL F3 PS 0 5A 1A TL F3 PS 1A TL F5 Motor 2 5A TL F5 Motor 2 5A TL 500uA 500uA 1000 25 amps for 6 sec lt 100 AC Input 85 264 47 63 Hz Output 5V 7W Spec 1500V for 1 second EQUATOR Convective Warmer Service Manual PartsList Appendix D Parts List Appendix D contains the list of parts that can be ordered Contact Smiths Technical Service Department or Smiths Medical ASD to order parts
9. e R23 C13 HB m Hmm mm L1 L2 TP30 Rx SW1 09 i EEHEEHE E zma C26 a E HN R m Ci3m 14 TP4 eus HOSE SW Figure 3 6 Location for R108 4 Record the LO temperature readings in items 11 through 13 on the Checklist EQUATOR Convective Warmer Service Manual 17 Chapter 3 Functional Test and Calibration Procedure Test 6 LO OverTemp and UnderTemp Test Test 7 18 1 Press and hold the LO button Press and hold the MED button Press the OFF button and then press the ON button The device will restart and proceed through the self test sequence If the device is hot let it cool to approximately 30 C before proceeding the front panel for approximately 8 seconds until the LO button LED starts to flash As the temperature increases verify that the following events occur Between 32 C and 34 C the UT LED amp stops flashing Between 38 C and 40 C the OT alarm sounds the OT LED lights the blower stops and the control panel displays the temperature at which the OT alarm was activated Check Pass for item 14 and record the temperature reading from the control panel in item 15 on the Checklist Note f the expected test events were not obtained proceed to Test 10 in this test sequence to perform the readjustment procedures MED OverTemp and UnderT
10. EQUATOR Convective Warmer Service Manual 1 Chapter 1 Description Control Panel Figure 1 1 identifies the controls and indicators seen on the control panel Definition Power ON Button salis i Power OFF Button 2 0 0 Ambient Temperature 4 Setting Button Start 2113 NO up setting se 365 36 ain Setting Button Cy 406 40 C Temperature q Setting Button M97 446 44 Setting Button 97 Over Temperature Alarm Indicator Under Temperature Indicator Disconnect LED Attention consult accompanying documents Elapsed Time Display h hour PEI Hose End Temperature Figure 1 1 Controls and Indicators 2 EQUATOR Convective Warmer Service Manual Chapter 2 Preventive Maintenance Preventive Maintenance The EQUATOR Convective Warmer device requires only minimal preventive maintenance to maintain its appearance and assure normal operation over the life of the instrument Recommended Schedule Enclosure cleaning semi annually or as required to preserve the enclosure s appearance Hose cleaning as necessary Replacement of the air filter annually or as required to assure unrestricted airflow Tools and Equipment The following tools equipment and cleaning agents are necessary to perform the maintenance procedures explained in this chapter For enclosure and hose
11. Remove the two nylon screws and nuts holding the Motor Driver Electronic Assembly to the back shield Note back shield does not need to be removed to remove the Motor Driver Electronic Assembly With a 3 8 spin tite or socket remove the locknut from the other board mount bracket and remove the ring terminal Removal of the nylon nut just above the locknut may be necessary to access the locknut T Lift the electronic assembly straight up Disconnect the motor cable at the in line connector and remove the electronic assembly Remove the electronic assembly from its protective shield carefully observing the high voltage WARNING stated above 10 Install the new driver electronic assembly EQUATOR Convective Warmer Service Manual Chapter 4 Component Removal and Replacement 11 Reassemble the device by performing the appropriate steps in reverse order Note Connect the motor cable at the in line connector before inserting the electronic assembly 12 Check the DIP switches on the driver electronic assembly if installed to verify the correct settings Refer to the default settings in Figure A 3 in Appendix A 13 The air speed have to be readjusted Refer to Test 3 HI Temperature Test procedure in Chapter 3 if necessary Nylon PAS Motor Driver Board AC Mains Cable Locknut Ring Back Shield Terminal peo ll Motor Motor Cable In Line Connector Figure 4 2 Motor D
12. d mmm m yim Z mA R12 R4 4 RM 5 9 4L U28 102 Sm BA m gi aL 5 MT P100 HN S Zm R49 HN TPSG C1 TP17 C3N N ps c18 mh R m 38 a EEEE ___ Im my R54 us Res R103 TP39 m m m ca C8 U25 R19 RIG NEN 8 SE Tp29 ms un e uin n sista Rie nu M H l E EEBENREN HV E L1 L2 Rs SW1 US ac m mcmm 8 comm a ede E MC m Ci3m 14 T HOSE SW Figure 3 4 Locations for R102 R103 8 Record the TA Temperature Reading item 4 control panel Temperature Reading item 5 DVM Reading item 6 and TA feet minute Reading item 7 on the Checklist EQUATOR Convective Warmer Service Manual 15 Chapter 3 Functional Test and Calibration Procedure Test 4 MED Temperature Test 16 Press the MED button 8 40 and allow the temperature to stabilize for at least 5 minutes After the temperature has stabilized verify that the MED temperature readings appear as follows TA MED Temperature Reading 39 0 C 41 0 40 0 nominal Device MED Temperature Display 39 0 41 0 40 0 C
13. Assembly has malfunctioned Device does not complete self test See following section Self Test Does Not Complete Device bypasses self test and goes 1 DIP switch 1 on SW1 on the Control Electronic Assembly directly to ambient or malfunctions is in the TEST position Verify that all switches are in completely NORM position 2 Device was dropped on top and the Control Electronic Assembly is damaged Blower is on with the Power OFF Control Electronic Assembly Q1 or Q9 failure Detect a burning smell during and after Heater is always ON the self test Mains Electronic Assembly solid state relay K2 has failed Control Electronic Assembly heater servo loop has malfunctioned EQUATOR Convective Warmer Service Manual 43 Appendix B Troubleshooting Airflow Failures Symptom No airflow Note f heater was on with no airflow the impeller may be damaged and may need replacement Disconnect the power cord from the electrical outlet Inspect entire impeller by shining a light through the air outlet Weak airflow Too strong airflow or noisy Heat Related Failures Symptom Possible Cause Solution 1 If the motor is running Hose is plugged e Air intake is restricted 2 If the motor is not running e Hose electrical connector is disconnected Connector J7 J8 on Control Electronic Assembly are disconnected Motor cable connections are not correct Motor fuse F5 on Mains Electronic Assembly
14. BH S L RT TPM PEERS m i mma lU ix TPM 40 1 8 R103 TP7 R54 040 R9 HN mH m 9 HH ca C8 U25 RIJ 16 R27 mmu M KONCE METER mz nnm 037 mm Rf mm t x 1 m mans A m m EV Hu L1 L2 Rx SW1 mo 8 2mm NN ran m 14 SW Figure 3 5 Location for R105 4 Record the MED temperature readings in items 8 through 10 on the Checklist EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure Test 5 LO Temperature Test 1 Press the LO button and allow the temperature to stabilize for at least 5 minutes 2 After the temperature has stabilized verify that the LO temperature readings appear as follows TALO Temperature Reading 35 0 37 0 C 36 0 nominal Device LO Temperature Display 35 0 37 0 36 0 nominal DVM LO Temperature Reading 0 355V 0 375V 0 365V nominal 3 If necessary slowly readjust R108 hose end L for a TA reading of 35 8 C 36 2 36 0 nominal Refer to Figure 3 6 for the location Wait until the readings on the TA stabilize
15. Read 43 45 C C 6 HI Temp Reading DVM DVM Read 0 435 0 455 7 HI Temp Airflow w New filter TA Read 1650 1850 ft min ft min 8 MED Temp Reading TA TA Read 39 41 C C 9 MED Temp Reading Control panel Device Read 39 41 10 MED Temp Reading DVM DVM Read 0 395 0 415 Vdc Vdc 11 LO Temp Reading TA TA Read 35 37 C C 12 LO Temp Reading Control panel Device Read 35 37 13 LO Temp Reading DVM DVM Read 0 355 0 375 Vdc 14 LO UT OT Test Verification Verify Pass Fail v Pass Fail 15 LO OT Temp Reading Device Read 38 40 16 MED UT OT Test Verification Verify Pass Fail v Pass Fail 17 MED OT Temp Reading Device Read 42 44 C 18 HI UT OT Test Verification Verify Pass Fail Pass Fail 19 HI OT Temp Reading Device Read 46 48 20 OT Temp Reading Device Read 46 48 C 21 Downstep Alarm Delay Stopwatch 60 90 sec Sec 22 Thermostat Function turns OFF Stopwatch 130 sec Max Sec 23 Thermostat Function resets ON Verification Verify Pass Fail v Pass Fail 24 DIP Switches at SW1 all to NORM Verification Verify Pass Fail v Pass Fail EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure Instrument Test Setup Prepare the EQUATOR Convective Warmer for testing by connecting the hose and the thermistor cable to the rear of the device 1 Remove the top of the enclosure Refer to the Open the Enclo
16. Weymouth Street Rockland MA 02370 USA USA Canada 1 800 258 5361 International 1 781 878 8011 European Representative Smiths Medical International Ltd Watford Herts WD24 4LG UK Tel 44 0 1923 246434 Fax 44 0 1923 240273 Australian Representative Smiths Medical Australasia Pty Ltd 61 Brandl Street Brisbane Technology Park Eight Mile Plains QLD 4113 Australia Tel 61 0 7 3340 1300 Fax 61 0 7 3340 1399 x EQUATOR Convective Warmer Service Manual Introduction Important Safety Information CONTRAINDICATIONS Thermal injury may occur if convective warming therapy is applied to lower extremities during aortic cross clamping procedures Thermal injury may occur if convective warming therapy is applied to ischemic limbs WARNING Death or serious injury may occur if these warnings are not followed Read and follow all instructions and accompanying documents Failure to follow instructions could lead to misuse of the device or device malfunction Electrocution Hazard There are no user serviceable parts inside the enclosure Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure Blankets are for single use only To reduce the risk of cross contamination do not reuse blankets Cover all open wounds under the warming blanket to prevent airborne contamination Grounding reliability can only be achieved when
17. device turned OFF Test 1 Self Test Sequence The self test sequence checks that the automatic self test functions properly when the device is turned ON 12 Check that all the LEDs turn off except the button Press the ON button and allow the device to complete its self test sequence During the self test sequence check the control panel to verify that all of the push button LEDs and the UT LED s are lit and at the same time that the following sequence occurs Temperature Thermistor Open Circuit check OK Flash Safety Thermistor Open Circuit check OK Flash Ms Open Heater Detector Circuit check OK Flash s Safety Thermistor OverTemp check OK Flash and LED and that the blower continues to run The self test is completed Check Pass for item 1 on the Checklist Note f the self test sequence did not complete properly check Fail on the Checklist and refer to Appendix B Troubleshooting EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure Test 2 Disconnect Indicator Test 1 If necessary press the OFF button then press the ON button Wait for the self test to complete N Disconnect the hose thermistor cable from the rear of the device Verify that the Disconnect LED lights the beeper beeps and the blower stops 3 Check that the red SAFETY LED b
18. especially reverse polarity 1 Be sure there is no permanent connection between the motor mounting plate and the rear chassis EARTH GND 2 Check for an earth ground wire that was removed and not reinstalled correctly EQUATOR Convective Warmer Service Manual 47 Appendix B Troubleshooting 48 EQUATOR Convective Warmer Service Manual Appendix C Specifications and Reference Data C Specifications Appendix C contains the system specifications Standard Compliance Product Safety EMC Enclosure Protection Convective Warmers Physical Height Width Depth Weight Airflow Filtration System Environmental Operation Temperature Temperature Humidity Transportation Temperature Humidity Storage Temperature Humidity Thermal Temperature Set Points OverTemp Trip Points Set Temp UnderTemp Trip Points Set Temp Thermostat Normally Closed Heater Resistance Cold Hose End Temperature EN 60601 1 UL 2601 1 EN 60601 1 2 FCC 47 CFR Part 15 Class B IEC 60529 IP Code IPX1 ASTM F2196 02 30 cm 11 75 inches 24 cm 9 5 inches 19 cm 7 5 inches 6 8 kg 15 Ibs 7 7 to 9 0 m sec 1520 to1780 feet min 1 02 to 1 19 cmm 36 6 to 42 9 cfm 0 2 micron filter 10 C to 40 C 10 to 95 non condensing 18 C to 60 C 5 to 95 non condensing 5 C to 40 C 5 to 95 non condensing 36 1 40 1 44 1 36 39 1 40 43 1 44
19. has blown Impeller is restricted and unable to spin Motor Driver Electronic Assembly if installed has malfunctioned 1 Filter is dirty e Replace with new filter 2 Motor Driver Electronic Assembly has malfunctioned or the speed is not correctly adjusted Adjust speed Refer to Test 3 HI Temperature Test in Chapter 3 for procedure to adjust speed Air filter is missing 2 Air filter is not fully covering the plenum intake only with two piece air filters 3 Motor Driver Electronic Assembly has malfunctioned or the speed is not correctly adjusted Refer to Test 3 Temperature Test in Chapter 3 for procedure to adjust speed Possible Cause Solution Temperature display is more than 1 C below or above setting 1 Hose being used is not the hose shipped with device 2 Verify by performing the Functional Test and Calibration Procedure Refer to Chapter 3 No heat when the blower is running and a Temperature setting 39 C 40 C 44 C is selected 1 If Disconnect LED is lit Control Electronic Assembly or cable connections have failed See following section Mains Electronic Assembly Heater control solid state relay K2 has failed e Heater or cable connections have failed Temperature proceeds to safety alarm at any setting including ambient 1 Control Electronic Assembly has failed 2 Heat control solid state relay has malfunctioned Temperature exceed
20. of the device when any of the following situations occur e Any adjustments and repairs are performed by unauthorized personnel e The device is not used according to the manufacturer s recommendations The procedures described in the EQUATOR Convective Warmer Operator s Manual and in this service manual are not followed Environmental operating conditions and location recommendations not followed Indications for Use The EQUATOR Convective Warmer is intended for thermal regulating of a patient s temperature by a warm air heated blanket system It is designed to prevent hypothermia and or reduce cold discomfort before during and after surgical procedures It is intended for use by appropriately trained healthcare professionals in clinical environments vi EQUATOR Convective Warmer Service Manual Introduction Symbols The following symbols are used in the manual and on the device and disposables Symbol Definition Power ON Button Power OFF Button Ambient Temperature Setting Button Start up setting exo 36 C Temperature Setting Button 91 e 40 Temperature Setting Button A 44 C Temperature Setting Button A gt D Over Temperature Alarm Indicator Under Temperature Indicator Disconnect LED Elapsed Time Display h hour Hose End Temperature Type BF Equipment nal e em Protected Against Dripping Water UU
21. the Mains power cord is connected to a properly grounded receptacle Risk of electrical shock exists if the equipment is not connected to a properly grounded receptacle resulting in death or serious injury to the patient or user Exposed conductors on the Mains power cord can cause an electrocution hazard Remove the device from service if the Mains power cord has exposed wires The EQUATOR Convective Warmer must be calibrated by Smiths Medical ASD or Smiths Medical ASD authorized personnel Do not use the EQUATOR Convective Warmer in high energy fields such as Cauterizers MRI X RAY portable and mobile RF communications equipment and other such devices The EQUATOR Convective Warmer may act as a projectile in a strong magnetic field cause image artifacts or not function as intended Do not use the EQUATOR Convective Warmer in the presence of a flammable anesthetic mixture with air oxygen or nitrous oxide The risk EQUATOR Convective Warmer Service Manual xi Introduction of explosion exists if the device is operated in a potentially explosive environment prevent fire hazard and possible damage to the EQUATOR Convective Warmer use only fuses specified Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure CAUTION Thermal injury may occur if these cautions are not followed e f Over Temperature audible alarm s
22. the microswitch assembly to the studs Remove the microswitch assembly When reinstalling the microswitch assembly to the studs be sure to use a thread locking adhesive compatible with plastics e g Loctite 222MS Install the new microswitch assembly Be sure the attachment nuts do NOT touch the motor mounting plate Reassemble the device by performing the appropriate steps in reverse order Test for smooth and proper operation of the microswitch after assembly Replace the Air Outlet Replacing the air outlet requires removal of the motor mount assembly The air outlet is located under the motor mount assembly 1 34 Perform the Replace the Motor procedure to remove the motor mount assembly but do not remove the motor from the mounting plate or the impeller from the motor EQUATOR Convective Warmer Service Manual Plenum Chapter 4 Component Removal and Replacement With the motor mount assembly removed remove the hose microswitch assembly Refer to the Replace the Hose Microswitch Assembly procedure described in this chapter Remove the air outlet by sliding it into the plenum Refer to Figure 4 7 Air Outlet Figure 4 7 Air Outlet Exploded View Diagram 4 Install the new air outlet Be sure the holes are to the top on the air outlet 5 Reassemble the device by performing the appropriate steps in reverse order 6 Hold the air outlet in position while testing the microswitch actuation w
23. to Figure 4 10 1 9 Qv 09 Power Supply Assembly Cable Connector 41 Disconnect the power cord from the electrical outlet and from the rear of the device Remove the enclosure top Refer to the Open the Enclosure procedure described at the beginning of this chapter Release the cable to J6 from the wire clip Remove the cable at J1 and J2 on the power supply assembly Remove the screw at the upper right corner and remove the ring terminal Remove the remaining three corner screws securing the power supply to its standoffs and remove the power supply Motor Ring Terminal Cable Connector J2 Figure 4 10 Power Supply Exploded View Diagram 7 Install the new power supply assembly 38 Orient the board so that the cable connector J1 is on the left and the connector J2 is in the upper right corner Reassemble the device by performing the appropriate steps in reverse order EQUATOR Convective Warmer Service Manual Appendix A Reference Diagrams Reference Diagrams Appendix A contains the following reference diagrams Mains Electronic Assembly Control Electronic Assembly Motor DIP Switch Settings amp Speed Adjustment Potentiometer Enclosure Top Cables Enclosure Base Wiring K3 le L L 1 L N IST T_T FAN TST FAN LT R N POWER e MAINS SUPPLY Figure A 1 Mains Electronic Assembly EQUATOR Convective Warmer Service Ma
24. 0 41 20 3 9241 BEdL SdL 201 20 EA ASSV 82d 509 doos 03 m Figure A 2 Control Electronic Assembly EQUATOR Convective Warmer Service Manual 40 Appendix A Reference Diagrams Correct DIP Switch Settings Speed Adjust Potentiometer Figure A 3 DIP Switch Settings and Speed Adjust Potentiometer on the Motor Driver Electronic Assembly Kurly Lok Quick Wire Wire Anchor Connects Clip Figure 4 Enclosure Top Cables EQUATOR Convective Warmer Service Manual 41 Appendix Reference Diagrams Figure A 5 Enclosure Base Wiring 42 EQUATOR Convective Warmer Service Manual Appendix B Troubleshooting B Troubleshooting Appendix B contains symptoms and possible causes and solutions for troubleshooting problems with the device General Failures Symptom Possible Cause Solution The device will not activate when the ON 1 If No AC power is detected at J1 on the Mains Electronic button is pressed Assembly e Power cord is defective or cut e Poor power cord insertion or connection Mains filter is damaged 2 If AC power is detected at J1 on the Mains Electronic Assembly e Fuse F1 F2 and or F3 have has blown Mains Electronic Assembly connections are bad or intermittent e The 5V power supply is not functioning output is at or below 4 5V Fuse F4 on Control Electronic Assembly has blown System Clock is not functioning check TP20 2KHz Control Electronic
25. 1 to the NORM positions Chapter 3 Functional Test and Calibration Procedure Adjust R104 until the A LED at position D11 in the center of the Control Electronic Assembly just turns OFF turn counterclockwise if the A LED is already turned ON Adjust R116 counterclockwise until the DVM reads 0 413V 0 417V 0 415V nominal Adjust R106 UT until the UnderTemp LED on the control panel just stops flashing turn counterclockwise if the LED is flashing Refer to Figure 3 7 for the location on the electronic assembly Press the OFF button Reconnect J4 and J7 to the Control Electronic Assembly 11 Repeat all and UnderTemp Tests Tests 6 9 while re recording test results in items 14 20 on the Checklist Test 11 Temperature DownStep Alarm Delay Check T 10 Reset DIP switch 4 on SW1 to the NORM position Disconnect J4 and J7 from the Control Electronic Assembly Refer to Figure 3 3 for the locations on the electronic assembly Set DIP switch 4 SW1 to the H position Refer to Figure 3 7 for the position of SW1 on the electronic assembly Turn R116 on the Control Electronic Assembly to the center of its rotation Refer to Figure 3 7 for the locations on the electronic assembly The DVM should read approximately 0 42V Press the ON button The motor will not run Press the HI button Aon the control panel Start the stopwatch and press the
26. 3 U15E TToc lt lt JOPENT 10 R127 oj 1 SEL 0128 11 73 10 Fancos 1 00K R129 384 A 16 9K 1 MED UT 4 LO Ur 611473 ATor 4 75 n oO bis BEEP gt 3 C8 042 65 1 Lo SEL 18 75 R36 71 5K E NOTE u37c 3 D 46 75 3 D gt METER HI 45 23 MED OT SEL METER ASSEMBLY 70 02 102F ASY PCB 60 30 600 BOM 70 10 102F ASY t freu TO FROM Temperature 2211 2022 Italic Voltage Measurements shown as PAGE 1 amp Alarm 18 18 S METER LOG AM GENERATOR Select TP102 Hose End Adj X XX X XX are approximate for Room Temp HI Temp AMB 44 C settings T R102 274K and are for reference only 24 Rios MED SEL lt C gt gt swi 1e 215 Lo Seige 05476 amc 215 16 054 1 16__ gt 50 0420 R15 13 FSEL IN loss SHDN R66 100K m 5 101
27. 45 18 sw gt gt vcc sw Hose LM339A Disconnect p lt Detect vio L TM339A ni ALARM LED KC 15 16 1 BEEPER 3 Lue gt gt ALARM 5 cisd aid ora ass 9pen Alarm JA 2 us Thermistor TP10 243904 10 68 07 5 U38B 2 30 30 4 U15B A 1K AOT f A M339A F LM339A 927 12 4 u3sc J 1 ZXMNGAO7I Di 14 AOT 4 s eet 2 uisc m 2 Alarm vec a 6 FAN PWR 4013 74HCO4 ari Thermistor eh THERMISTORS RST pMansry TO MAINS Open Temp TAHCAA TAHC14 BOARD u 12 L or ef sou 1612 suri GND JoBENE ZXMNGAO7F 150p E 2221 2062 u40 LM385 2 5 a9 5 as P en 2 M 2 22 11 2034 _ 59 150 ZXMN6A07F 15 16 Ri 1615 10 CI6 ZXMNGAO7F 70s Delay DN Step
28. 47 OPEN HEATER gt 1 THERMOSTAT i Delete R42 if this circuit is utilized duas SENSOR 7 TO MAINS 7 Lo Heater 1 R63 BOARD 5 zy M339A 499 LM339A CSeo o10H EATER CURRENT SENSE X REFD MAX835 Figure E 2 Temperature Blower Control pem Schematic UNDER VOLTAGE PROTECT GR SET FOR 4 5V TPsG EQUATOR Convective Warmer Service Manual 57 Appendix Schematic Drawings D1 1N4148 FROM TSTAT SW F5 VCC 1A E4 vec y G2RL 1A E CF 005 BLOWER CONTROL SAFETY RY K2 OGN0031 8211 BOARD CONT HEAT RY sz cam HEATER PGND DRIVER MOLEX 22 11 2052 4 V AC2 2 HEATER HOT PF240D25 D2 K3 HEATER RET FROM I TO SWITCHED BLOWERRET MAINS TO TSTAT SW FROM TSTAT SW ENIX 1778056 1N4148 G2RL 1A E CF DC5 F3 F1 LINE 4 NEU OGN0031 8211 LINE OGN0031 8211 F2 NEUT MOLEX 26 60 4030 MOLEX 39 01 4051 0 0031 8211 C1 100p Figure E 3 Mains Electronic As
29. LO button at the same time Measure the time until the OT LED turns ON and the alarm sounds The stopwatch should read between 60 and 90 seconds Record the measured time in item 21 on the Checklist Press the OFF button 5 Reconnect J4 and J7 to the electronic assembly EQUATOR Convective Warmer Service Manual Bj Chapter 3 Functional Test and Calibration Procedure Test 12 Fire Safety Thermostat Function Test Check that the DIP switches are in the NORM position Refer to Figure 3 7 for the position of SW1 on the electronic assembly Remove TA and completely plug the end of the hose at the elbow using a hose holder so that there is no airflow Press the ON button 44 Start the stopwatch and press and hold the HI button on control panel for approximately 8 seconds until the HI button LED starts to flash Note f the next step takes longer than 130 seconds maximum or if there is smoke or a burning smell press the OFF button ana disconnect power immediately Measure the time until the thermostat turns off Stop the stopwatch when the Disconnect LED C lights and the alarm sounds The motor does not stop Record the stopwatch time in item 22 on the Checklist Press the OFF button 8 Unplug the hose and disconnect the hose from the back of the device to allow cool air inside to help reset thermostat After approximately 1 minute reconnect the hos
30. Points at TP107 and TPG 4 Adjust R107 counterclockwise until the CS LED turns ON and then turn R107 clockwise until the LED just turns OFF 5 Observe the voltage measurement at TP107 on the DVM Then readjust R107 adding 0 25V to the observed TP107 reading Note f the CS LED does not turn ON when adjusting R107 set theTP107 reading on the DVM to 0 25V gs n nu ni m 1031 130 LU23 HHI Sa HII __ 39 E N cm m 1011 m t HII gs nu m Ht m U29 U14 m 21 25 27 01 mnn num gt 3 RU au E mun 7 gal quu R57 a m a 8 a S Cmm C20 CS m E Rsg rry TP18 mwH N TP 88 529708 8 SM TP107 TP31 suu u 30
31. Smiths EQ 5000 EQUATOR Convective Warmer REF EQ 5000 100V REF EQ 5000 115V REF EQ 5000 230V Service Manual P N 4533902 GB Rev A Copyright EQUATOR Convective Warmer Part Number 4533902 GB Rev A 2005 01 This revision supercedes all previous revisions Under copyright laws this manual may not be reproduced in any form in whole or in part without prior written permission of Smiths Medical ASD Inc Smiths Medical ASD Level 1 and EQUATORare trademarks of the Smiths Medical family of companies The symbol indicates the trademark is registered in the U S Patent and Trademark office and certain other countries Every effort has been made to ensure that the information in this manual is accurate and details provided are correct at the time of printing The company however reserves the right to improve the equipment shown Other company and product names mentioned herein are trademarks of their respective companies Mention of third party products is for informational purposes only and constitutes neither an endorsement nor a recommendation Smiths Medical ASD assumes no responsibility with regard to the performance or use of these products For further information please call the local Smiths Medical ASD representative or Smiths Medical ASD direct at 1 800 258 5361 or 1 781 878 801 1 2005 Smiths Medical family of companies All rights reserved The products described are cov
32. ave two screws that secure the air outlet to the motor mounting plate 11 If installed remove the two screws through the motor mounting plate at the air outlet Refer to Figure 4 3 for their location 12 Lift the motor mount assembly up from the plenum tilt the assembly so the motor driver electronic assembly clears its cavity and remove Note Guide the heater wires through the grommet on the motor mounting plate 13 Rotate the impeller and check for any damage to the blades If the impeller is damaged replace it Note Before removing the impeller measure the distance between the impeller and the motor mounting plate With the motor facing down 30 EQUATOR Convective Warmer Service Manual Chapter 4 Component Removal and Replacement measure the distance from the motor mounting plate to the bottom of the impeller approximately 1 5 When you reinstall the impeller you must advance it on the shaft to the same distance 14 Remove the impeller from shaft by wedging two screw drivers under opposite sides and prying the impeller evenly off the shaft 15 Remove the four nuts that hold the motor to the mounting plate 16 Lift the motor out and disconnect the motor cable from the Motor Driver Electronic Assembly at the in line connector Refer to Figure 4 2 to see the in line connector Motor Power Supply AFIN Air Outlet Ring Terminal Screws 1 Mai J2 on Power Mains Electronic J4 2 on Mains As
33. cal ASD or a Smiths Medical ASD authorized representative Service by any other person or organization voids the warranty and transfers liability for malfunctions of the device to the servicing organization Warranty Service Devices received for repair that have not been obviously abused or impact damaged and are still under warranty will be promptly repaired and returned at no charge A no charge purchase order is requested for tracking Refer to the EQUATOR Convective Warmer Operator s Manual for the complete text of the limited warranty Non Warranty Service Devices received that have suffered obvious abuse or impact damage and devices no longer under warranty will be promptly inspected and a verbal EQUATOR Convective Warmer Service Manual ix Introduction estimate of repair cost will be given to you A purchase order will be required from the hospital consistent with the verbal estimate A written estimate will be provided upon request Returning the Device for Service Before returning the EQUATOR Convective Warmer for service contact Smiths Medical ASD for Returned Goods Authorization Note The EQUATOR Convective Warmer must be cleaned and disinfected for repair shipment or it will be immediately returned as received Service Contacts Contact Smiths Medical ASD Technical Service Department or Smiths Medical ASD distributor at USA Canada Smiths Medical ASD Inc Anesthesia and Safety Devices Division 160
34. cleaning a mild non abrasive detergent diluted in warm water For air filter replacement Phillips head screwdriver Cleaning the Hose and Enclosure 1 Disconnect the power cord from both the electrical outlet and from the rear of the device chassis ground cable is connected to the grounding stud located below the power cable connector at the rear of the device disconnect the cable Remove the hose from the device a Disconnect the hose thermistor cable from the rear of the device by turning the knurled knob on the thermistor receptacle counterclockwise until the cable can be unplugged and removed from the device b Grasp the hose connector twist and pull it straight out from the air outlet at the rear panel Remove the device from the pole if pole mounted EQUATOR Convective Warmer Service Manual 3 Chapter 2 Preventive Maintenance 5 Using a dampened cloth or sponge wipe down the enclosure and hose as needed Note Do not use alcohol or other strong solvents to clean the hose or exterior surfaces of the device These solutions may damage the label and other parts Note Do not use a soaking wet cloth to clean the hose or exterior surfaces of the device Water may drip or seep into the electrical connectors and components at the rear of the device and into the air intake opening at the bottom of the enclosure Electrical components and the air filter could be damaged if they become wet 6 Wipe t
35. e Press the ON button Verify that the device completes self test and functions normally Check Pass for item 23 on the Checklist Test Completion Shut Down the Instrument 22 2 Press the OFF button and unplug the device from the power outlet mm Verify that the DIP switches are in the NORM position 1294 Refer to Figure 3 7 for the position of SW1 on the electronic assembly Check Pass for item 24 on the Checklist Before closing the enclosure disconnect grounding clip lead from chassis to the motor mounting plate if installed Reinstall the top of the enclosure Refer to the Heinstall the Enclosure Top procedure in Chapter 4 EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure Determine Instrument Disposition Review all of the entries on the Checklist If the entries show that the device is in tolerance with all required test parameters the device is in calibration and all safety features are functional Note Perform all applicable electrical safety tests as required per institutional procedure or protocols before returning the device to patient use These tests include but are not limited to leakage current and ground bond test Perform these tests according to methods and pass fail criteria described in UL 2601 1 or EN 60601 1 WARNING Grounding reliability can only be achieved when the Mains power cords are connected to a prop
36. e Manual Chapter 3 Functional Test and Calibration Procedure 6 After the temperature has stabilized verify that the HI temperature readings appear as follows TAHI Temperature Reading 43 0 45 0 44 0 C nominal Device HI Temperature Display 43 45 44 nominal DVMHI Temperature Reading 0 435V 0 455V 0 445V nominal 7 f necessary slowly readjust R102 hose end H for a TA reading of 43 8 C 44 2 44 0 C nominal and or readjust R103 LO for a DVM reading of 0 443V 0 447V 0 445V nominal Refer to Figure 3 4 for the locations Wait until the readings on the stabilize J5 200008000 o BOARD PARITA HIHI 035 ua n RTT RTS wm
37. e safety procedures required for servicing live Mains parts shall be allowed to open the enclosure Open the Kurly Lok wire anchor to release the blue twisted wires and the black cable Note Be careful not to stress the transformer T2 on the Control Electronic Assembly especially when disconnecting the quick connects in the blue wires Release the cable to J6 from the wire clip EQUATOR Convective Warmer Service Manual Wire Clip Kurly Lok wire anchor Corner Screws 4 Chapter 4 Component Removal and Replacement Figure 4 1 Enclosure Exploded View Diagram Reinstall the Enclosure Top Note Hemove the motor mounting plate grounding clip if installed If the Kurly Lok anchor or the wire clip has become unstuck replace or re stick the anchor s using Loctite 495 Super Bonder Place the Kurly Lok anchor next to the hose thermistor input connector Refer to Figure A 4 in Appendix A to see placement of the anchors From the large black cable place the small cable that connects to J6 into the wire clip where it separates from the black cable Place the blue twisted wires and the large black cable into the Kurly Lok wire anchor and twist the ends to capture the wires With the device standing on its base gently place the top on the base The top should fit onto base without forcing Forcing usually indicates interference of cables between the motor and the Control Electronic Assembly Lay
38. each use xii EQUATOR Convective Warmer Service Manual Introduction Do mount the EQUATOR Convective Warmer higher than 46 1 17m on the IV pole For convenience 46 1 17m is indicated by a black mark on the EQ 5000 power cord Mounting the device above 46 1 17m may result in instability of the pole and tipping Donot change filter while unit is operating EQUATOR Convective Warmer Service Manual xiii Introduction xiv EQUATOR Convective Warmer Service Manual Chapter 1 Description 1 Description EQUATOR Convective Warmer The EQUATOR Convective Warmer is used to reduce hypothermia and patient discomfort before during and after surgical procedures The system consists of a high flow warming device with hose end temperature control and a single use blanket The EQUATOR Convective Warmer draws ambient temperature air through a particulate air filter The filtered air is warmed to a selected temperature The warmed air enters the blanket through the hose and is distributed through delivery channels to the patient Perforations on the patient side of the air delivery channels in the blanket gently disperse warm air over the patient thereby maintaining patient temperature The warming device has three outlet temperature settings that provide flexibility in patient treatment 36 40 and 44 These three temperature settings are servo controlled by thermistors placed at the hose end that co
39. edical ASD are strictly forbidden Any adjustment or repair of the EQUATOR Convective Warmer must be performed at a properly grounded ESD workstation using the procedures presented in this manual Read and follow instructions and all accompanying documents Failure to follow instructions could lead to misuse of the device or device malfunction The manual is divided into the following sections Section Contains Chapter 1 Describes general information about the device Chapter 2 Procedures to perform scheduled maintenance Chapter 3 Functional tests used to check the safety functions of the device Chapter 4 Procedures to replace components of the device Appendix A Diagrams for the Mains and Control Electronic Assembly Appendix B Causes and solutions for troubleshooting device issues Appendix C System specifications Appendix D List of parts available to order Appendix E Circuit drawings Maintenance Log Form to record maintenance tasks EQUATOR Convective Warmer Service Manual Introduction Abbreviations Used in the Manual Abbreviation Definition DVM Digital Volt Meter TA Thermo Anemometer TP Test Points LED Light Emitting Diode AMB Ambient Room Temperature LO Low Temperature 36 C Medium Temperature 40 igh Temperature 44 Over Temperature UT Under Temperature Appropriate Use and Service Smiths Medical ASD cannot assume responsibility for performance safety and reliability
40. emove the three nuts from the studs holding the heater to the chassis 4 Remove heater and the gasket 5 Attach the new gasket around the heater Be sure to align the three slits in the 7 8 9 gasket to the three brackets on the heater Guide the heater wires through the slit in the gasket closest to the exit hole in the plenum Twist the heater wires approximately one twist every inch 2 5 cm Insert the two thick washers onto each stud if removed Orient and insert the heater onto the chassis studs 10 Reassemble the device by performing the appropriate steps in reverse order Note Be sure to guide the heater wires through the exit hole in the plenum during reassembly 11 Test for smooth and proper operation of the microswitch after assembly EQUATOR Convective Warmer Service Manual 33 Chapter 4 Component Removal and Replacement Replace the Hose Microswitch Assembly 1 Microswitch Assembly o NO Disconnect the power cord from the electrical outlet and from the rear of the device Remove the enclosure top Refer to the Open the Enclosure procedure described at the beginning of this chapter Remove the four screws attaching the Mains Electronic Assembly to the stand offs and lift the Mains Electronic Assembly away from the screws on the microswitch assembly Refer to Figure 4 5 Plastic Spacers Figure 4 5 Hose Microswitch Assembly Exploded View Diagram Remove the two small nuts securing
41. emp Test Press the OFF button and then press the ON button The device will restart and proceed through the self test sequence If the device is hot let it cool to approximately 35 C before proceeding 40 C 9 on the control panel for approximately 8 seconds until the MED button LED starts to flash As the temperature increases verify that the following events occur Between 36 C and 38 C the UT LED 22 stops flashing Between 42 C and 44 C the OT alarm sounds the OT LED ed lights the blower stops and the control panel displays the temperature at which the OT alarm was activated Check Pass for item 16 and record the temperature reading from the control panel in item 17 on the Checklist Note f the expected test events were not obtained proceed to Test 10 in this test sequence to perform the readjustment procedures EQUATOR Convective Warmer Service Manual Test 8 1 Test 9 Press and hold the AMB button Chapter 3 Functional Test and Calibration Procedure HI OverTemp and UnderTemp Test Press the OFF button and then press the ON button The device will restart and proceed through the self test sequence If the device is hot let it cool to approximately 40 C before proceeding 44 C 6 Press and hold the HI button the control panel for approximately 8 seconds until the HI button LED starts to flash As the temperature increa
42. erTemp and UnderTemp Readjustment Note 7he following readjustment procedure is necessary only if one or more of the previous OverTemp or UnderTemp test results from Tests 6 9 were out of tolerance Note After completing the following readjustment procedure you must repeat all of the OverTemp and UnderTemp tests Tests 6 to 9 1 Disconnect J4 and J7 from the Control Electronic Assembly Refer to Figure 3 3 for the locations 2 Set DIP switches on SW1 as slide switch 1 to the TEST position and switch 4 to the H position on the electronic 4
43. ered by one or more of the following U S Patent Nos 5 785 723 6 143 020 6 277 144 6 440 157 other patent s pending foreign patent s pending Manufactured in the U S A Contents Introduction Abbreviations Used in the Manual Appropriate Use and Service Indications for Use Symbols Service Information Warranty Service Non Warranty Service Returning the Device for Service Service Contacts Important Safety Information Description EQUATOR Convective Warmer Convective Warming Blankets Control Panel 2 Preventive Maintenance Recommended Schedule Cleaning the Hose and Enclosure Replace the Air Filter 3 Functional Test and Calibration Procedure Functional Test and Calibration Procedure Checklist Instrument Test Setup Preliminary Voltage Checks and Adjustments Functional Tests Test 1 Self Test Sequence Test 2 Disconnect Indicator Test Test 3 HI Temperature Test Test 4 MED Temperature Test Test 5 LO Temperature Test Test 6 LO OverTemp and UnderTemp Test Test 7 MED OverTemp and UnderTemp Test Test 8 OverTemp and UnderTemp Test Test 9 Ambient OverTemp Test Test 10 OverTemp and UnderTemp Readjustment Test 11 Temperature DownStep Alarm Delay Check Test 12 Fire Safety Thermostat Function Test Test Completion Shut Down the Instrument Determine Instrument Disposition 4 Component Removal and Replacement Open the Enclosure Replace the Motor Driver Electronic Assembly Replace the Mot
44. erly grounded receptacle Risk of electrical shock exists if the equipment is not connected to a properly grounded receptacle resulting in death or serious injury to the patient or user If the test entries show that the device is not in tolerance with all required test parameters do not use the device Contact Smiths Medical ASD Technical Service Department or Smiths Medical ASD EQUATOR Convective Warmer Service Manual 23 Chapter 3 Functional Test and Calibration Procedure 24 EQUATOR Convective Warmer Service Manual Chapter 4 Component Removal and Replacement 4 Component Removal and Replacement This chapter contains procedures to remove and replace various parts for the EQUATOR Convective Warmer Each procedure outlined in the following pages references an exploded view diagram that supplements the procedural steps The diagrams illustrate all of the components in the procedure and show the relationships of how each item fits into the component or module being replaced Refer to Figures D 1 and D 2 in Appendix D to view a more complete illustration of the enclosure base and top Note Always perform the Functional Test and Calibration Procedure after performing repairs to the EQUATOR Convective Warmer and before returning the device to the clinical area Improper repairs may result in serious injury to the patient damage to the device or device malfunction WARNING The EQUATOR Convective Warmer warming unit m
45. eter or Power Supply Cable EQUATOR Convective Warmer Service Manual Maintenance Log Date Elapsed Time Maintenance Task EQUATOR Convective Warmer Service Manual Maintenance Log Date Elapsed Time Maintenance Task 62 Equator Convective Warmer Service Manual
46. he device OFF and disconnect the power cord from the electrical outlet 2 Jump TP2 to TPG to disable the heater current detect circuit 224 3 Set DIP switch 1 on SW1 to TEST 2 314 to bypass self test The device will not pass self test with the heater current circuit disabled 44 C 4 Plug device in and press the ON button Press 44 C The Disconnect LED should not light The CS LED by 013 should light 5 Check for one of the following two conditions a If the Disconnect LED is now OFF and the device operates normally the problem is in the current sensing circuit e Check that all leads of potentiometer R107 are properly soldered e Check that voltage at TP107 is correct Refer to Preliminary Voltage Checks and Adjustments in Chapter 3 e Check TP2 Turn device OFF and disconnect the power cord from the electrical outlet Move the jumper to TP1 and TPG 44 C Plug device in and press the ON button Press 44 C 4 TP2 should be at a low voltage level when the HEAT CONT LED by J4 is lit and approximately 5V when off Comparator U42A has an open collector output b If the Disconnect LED is now OFF and the temperature does not rise the problem is in the heater circuit and its control e Check that the HEAT CONT LED by J4 is ON If itis ON the problem is not on the Control Electronic Assembly Check if there is AC voltage 100V 115V or 230V to the heater at J2 the long green connector on the Ma
47. he entire enclosure and hose dry using a soft dry cloth 7T Record the task on the maintenance log Replace the Air Filter CAUTION Do not change the air filter while the device is operating 1 Disconnect the power cord from both the electrical outlet and from the rear of the device 2 Remove the device from the pole if pole mounted Lay device on its side 3 Remove the four small Philips screws on bottom securing the filter in place Refer to Figure 2 1 4 EQUATOR Convective Warmer Service Manual Chapter 2 Preventive Maintenance Bottom of Device Filter Assembly Figure 2 1 Air Filter Replacement Discard the old filter assembly Inspect the new filter gasket assembly to be sure it is clean and unmarked Install new filter assembly using the original screws ptc og Record the task on the maintenance log EQUATOR Convective Warmer Service Manual 5 Chapter 2 Preventive Maintenance 6 EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure 3 Functional Test and Calibration Procedure The Functional Test and Calibration Procedure is a series of tests used to determine if the EQUATOR Convective Warmer device is operating within its design specifications and that all safety features are functional The procedure also describes steps to perform minor adjustments that may be required Some test procedures require service access to components that are inter
48. he self test to complete 44 C 9 Press the HI button and allow the temperature to stabilize for at least 5 minutes Verify that the air speed is between 1650 and 1850 ft min 1750 ft min nominal If the air speed is low check the air filter for cleanliness and replace if necessary If the airflow is outside the limits readjust the motor speed The adjustment potentiometer is located on the edge of the motor driver electronic assembly to the rear of the enclosure Refer to Figure A 3 in Appendix A for the location of the potentiometer Note Use a very long 45 7 18 slotted insulated screwdriver to access the potentiometer behind the motor Live AC Mains voltage is present at the Mains Electronic Assembly Touching the metal shaft to the Mains Electronic Assembly could result in serious injury or death This type of contact also can damage the electronic assembly and cause malfunction of the device WARNING Electrocution Hazard There are no user serviceable parts inside the enclosure Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure Note f adjusting the potentiometer does not adjust the speed the motor driver electronic assembly DIP switches if installed may be set incorrectly Refer to Figure A 3 in Appendix A for the correct setting of motor DIP switches setting EQUATOR Convective Warmer Servic
49. ibbon Cable Ground Strap Screw Display Panel Figure 4 9 Control Panel Exploded View Diagram 5 Remove ribbon cable from the panel board 6 Remove the five screws securing the Control Electronic Assembly to its mount and remove it for better access to nuts on the panel board 7 Remove the four nuts that secure the panel board 8 Remove the panel electronic assembly ground strap screw Note edge of the panel board is sealed with double sided tape to the face of the enclosure top 9 Begin at a corner and press the panel board firmly and evenly from the inside until the tape releases 10 Clean the mating surface of any residual tape adhesive to maintain the IPX rating 11 Remove tape backing from new panel board align mounting studs in holes and press into place 12 Secure with four locknuts Re install the panel electronic assembly ground strap to the post shiny side down 13 Firmly press around the entire sealing surface to seal the tape to maintain IPX rating 14 Reinstall Control Electronic Assembly if removed 15 Reconnect all cables Refer to Figure E 4 in Appendix E for all cable connections EQUATOR Convective Warmer Service Manual 37 Chapter 4 Component Removal and Replacement 16 Reinstall the enclosure top Refer to the Reinstall the Enclosure Top procedure described earlier in this chapter Replace the Power Supply Assembly The power supply assembly sits just in front of motor Refer
50. ing self test unless the hose end temperature is above the Over Temp trip point the newly selected temperature e g Shutting off at 44 and right back ON selecting 36 9 Under this condition the device may and the display may be irregular until the device drops below the Over Temp point for the newly selected temperature e g 399 This could take up to 10 seconds F The Disconnect LED eee flashes three There is an issue with the alarm circuit times and then stops There may be heater current when there should not be Turn OFF the device immediately 2 Disconnect hose air connector and check if air at the The Disconnect LED flashes twice then continues to flash or stays ON or ithout a b the al SITIO a benpar m outlet is being heated indicator turns on and the self test not there is an issue with the heater current sense does not complete circuit 4 Check that all leads of R107 are firmly attached to the Control Electronic Assembly and or adjust the TP107 threshold per current specifications Refer to Preliminary Voltage Checks and Adjustments in Chapter 3 Retest with the top on the device EQUATOR Convective Warmer Service Manual 45 Appendix B Troubleshooting Self Test Completes Symptom Possible Cause Solution Device turns on but the Disconnect LED lights when a temperature other than Ambient is selected 1 Turn t
51. ins Electronic Assembly If J2 pins 1 amp 8 100 115 230V bad heater If J2 pins 2 amp 8 100 115 230V bad Mains Electronic Assembly jumper foil If J2 pins 3 amp 8 100 115 230V bad connections to current transformer on Control Electronic Assembly If itis not ON the problem is on the Control Electronic Assembly Check circuit from Q5 working back toward TP1 6 Disconnect jumpers and set DIP switch 1 SW1 to NORM 12 46 EQUATOR Convective Warmer Service Manual Appendix B Troubleshooting Thermal Runaway Device Causes T Stat to Open Symptom Possible Cause Solution Motor Stopped The T Stat opens if the motor is stopped while a temperature is selected This happens because there is no delivery of heated air to the hose end sensors Note When this happens always check the impeller for heat damage Motor Running The T Stat opens if the heater is constantly on or if the airflow is greatly reduced 1 If the temperature reading is normal e Check for a crushed hose The device may have been used with a restricted air outlet 2 If the temperature increases look on Control Electric Assembly e If HEAT CONT LED is OFF then the Mains Electronic Assembly solid state relay K2 has shorted e If HEAT CONT LED is ON then the Control Electronic Assembly heater servo loop has malfunctioned Safety Leakage Test Symptom Possible Cause Solution High leakage
52. ith a finger The switch should actuate easily and freely without having to press the finger flush to the outlet Replace the Pole Clamp 1 Perform the Replace the Motor procedure to remove the motor mount assembly but do not remove the motor from the mounting plate or the impeller from the motor Remove the four screws retaining the pole clamp to the rear chassis and remove the clamp Refer to Figure 4 8 Reassemble the device by performing the appropriate steps in reverse order EQUATOR Convective Warmer Service Manual 35 Chapter 4 Component Removal and Replacement Microswitch Pole Clamp Figure 4 8 Pole Clamp Exploded View Diagram Replace the Control Panel 1 Disconnect the power cord from the electrical outlet and from the rear of the device 2 Remove the enclosure top Refer to the Open the Enclosure procedure described at the beginning of this chapter 3 Open the Kurly Lok wire anchor holding the cables to the rear of the enclosure and remove the J6 cable from the wire clip 4 Disconnect all cables leading from the base to the Control Electronic Assembly inside the top cover at the Control Electronic Assembly Refer to Figure 4 9 Note Be careful not to stress the transformer T2 on the Control Electronic Assembly especially when disconnecting the quick connects in the blue wires 36 EQUATOR Convective Warmer Service Manual Chapter 4 Component Removal and Replacement R
53. mu mo cam m C6 p CIE d C1 R66 mm E B m I ag MN HOSE SW me RIOTS TP2 H ON HEAT Figure 3 1 Locations for TP100 TPSG R100 TP107 CS R107 10 EQUATOR Convective Warmer Service Manual Chapter 3 Functional Test and Calibration Procedure 6 Plug the DVM into the METER connector on the Control Electronic Assembly with the appropriate cable or connect the wires to Test Points at Meter and TPM Meter on the electronic assembly Refer to Figure 3 2 for the locations J5 2000080000800 24 o 1 23 o TP6 BOARD PARA EYO O ao e NN 032 mS M i T E US 655 EN Ui
54. nal to the device For information describing how to access those internal components refer to the Open the Enclosure procedure in Chapter 4 Tools and Equipment The following tools and equipment are needed to perform the Functional Test and Calibration Procedure e 4 digit Digital Volt Meter DVM e Stopwatch e Calibrated thermo anemometer TA Meter Power supply cable Functional Test and Calibration Procedure Checklist The following table shows the Functional Test and Calibration Procedure Checklist required for the test procedures in this chapter The Checklist provides a convenient tool for measuring recording test results against appropriate default tolerance values specified for each procedure Note Copy the Checklist for use during the Functional Test and Calibration Procedure EQUATOR Convective Warmer Service Manual 7 Chapter 3 Functional Test and Calibration Procedure Functional Test and Calibration Procedure Checklist Device Serial Number Date of Test Name of Technician Test Item Number Method Tolerance Test Result 1 Self Test Sequence Verification Verify Pass Fail Pass Fail 2 Disconnect Indicator Test Verification Verify Pass Fail Pass Fail 3 Disconnect Safety Test Verification Verify Pass Fail Pass Fail 4 HI Temp Reading TA TA Read 43 45 C C 5 HI Temp Reading Control panel Device
55. national Application Specific Power Cord Domestic Only EQUATOR Convective Warmer Service Manual 51 Appendix D Parts List 10 9 19 14 52 23 24 25 26 12 wi 27 at Figure D 1 Enclosure Base Parts Exploded View EQUATOR Convective Warmer Service Manual Appendix D Parts List 21 18 22 Figure D 2 Enclosure Top Parts Exploded View EQUATOR Convective Warmer Service Manual 53 Appendix D Parts List 54 EQUATOR Convective Warmer Service Manual Appendix E Schematic Drawings E Schematic Drawings Appendix E contains the following drawings Mode Select Control Schematic Temperature Blower Control Schematic Mains Electronic Assembly Schematic Interconnect Schematic Meter Power Supply Cable EQUATOR Convective Warmer Service Manual 55 Appendix E Schematic Drawings Kict4490 1 UIA in out 5 15 2 CON24A MED SW 2 AMB SW STDBY SW TP28 IND LED pi Nae c150 10 Vi MED LED 14 AMB LED 16 fic14490 MED SWD 4 MC14490 MED MC14490 AMBSWD 12 fc14490 UIE 5 AMB 13
56. nnects to the blanket A fourth temperature setting delivers ambient temperature air The temperature indicated on the display of the warming device is the temperature of the air being delivered to the blanket at the end of the hose An over temperature system monitors the air temperature at the end of the hose that connects to the blanket A control thermistor adjusts the power applied to the heater in the warming device to maintain the selected temperature This enables the system to maintain the selected temperature under variations in ambient temperature A safety thermistor provides a signal to a separate high temperature comparison circuit The safety thermistor activates and alarms if the temperature exceeds the set point The safety circuit provides an independent means of shutoff which discontinues power to the heater and blower This prevents patient exposure to excessive temperatures in a single fault failure of the temperature controller Convective Warming Blankets The blanket consists of two layers of non woven polypropylene fabric coated with a layer of polyethylene The layers are bonded together to form a distribution network of air delivery channels The warm air is distributed around the blanket through the delivery channels and exits the blanket through a specially designed series of perforations in the patient side of the blanket The distribution of air is designed to minimize temperature differences throughout the blanket
57. nominal DVM MED Temperature Reading 0 395V 0 415V 0 405V nominal If necessary slowly readjust R105 hose end M for a TA reading of 39 8 C 40 2 C 40 0 C nominal Refer to Figure 3 5 for the locations Wait until the readings on the stabilize J5 J R105 20000H0000H00 24 7 6 1 0000000000023 o PANEL BOARD KEY Rii4 R118 5 035 s RIS U33 C127 amp mmm RIT d RENE un meo gt 034 R13 1 __ X 4 7028 120 m o N a R129 um BN Mm RDS e MULT P100 gt 2
58. nual 39 Appendix A Reference Diagrams MS 3SOH wo wum m ri 08012 m snp 8 91 mm SEIL 812 NN 9 2 T a om E 71 Em KN Z POLY ME 15 iss 4424 ne 8 gt T LOLY nsoya SOLU Edl w 912 m mu 2 ee j H Tha m 12 m m m Com os m mm m mm u Wd SdL EU nnt n vt 75 AD LMS ish 3 12 414 BED an an LON SO 9154 SASAS 59 zoru kords 1 u 7191 I 1 1941 Y 52 a 1 V 1 vd 5 ew sa JAS 7 ten ila ws LE lodi Ws B 1V3H GLEN M 159 1 sq 5 ESY YMd NV4 HE edt on I HHH osul umi CHI sm ZEN Lon I wel vni inp Hm c nas 11 vig 1 in 1 nu 2 m d el om m nn Tin PIS 9e 8641 2
59. or Replace the Impeller Replace the Heater Replace the Hose Microswitch Assembly Replace the Air Outlet Replace the Pole Clamp Replace the Control Panel Replace the Power Supply Assembly EQUATOR Convective Warmer Service Manual Contents Contents A Reference Diagrams B Troubleshooting General Failures Airflow Failures Heat Related Failures Self Test Does Not Complete Self Test Completes Thermal Runaway Device Causes T Stat to Open Safety Leakage Test C Specifications D Parts List E Schematic Drawings Maintenance Log iv EQUATOR Convective Warmer Service Manual Introduction Introduction This manual provides qualified hospital facility biomedical technicians and other qualified service facility personnel with procedures to service and make repairs to the EQUATOR Convective Warmer 100V 115V 230V Only trained qualified personnel knowledgeable of the good practices for servicing and repairing medical devices should service the device Perform service and repairs according to the procedures described in this manual WARNING Electrocution Hazard There are no user serviceable parts inside the enclosure Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure Note Any EQUATOR Convective Warmer circuit modifications or electronic assembly component replacements by persons other than those authorized by Smiths M
60. ounds and or red Over Temperature alarm indicator illuminates discontinue use of the convective warmer and remove from service Contact Smiths Medical ASD or an authorized representative for service If the EQUATOR Convective Warmer does not perform its self test properly fails to operate or stops while running discontinue use of the convective warmer and remove it from service Contact Smiths Medical ASD or an authorized representative for service e Hose Nozzle MUST be connected to a compatible Forced Air Blanket e Monitor the temperature of the patient at regular intervals e Periodically observe cutaneous response under blanket If erythema is evident decrease the temperature setting or discontinue use of convective warming therapy Do not place objects onto the blanket that will obstruct airflow e If equipment malfunction is evident discontinue use of the EQUATOR Convective Warmer and remove it from service Contact Smiths Medical ASD or an authorized representative for service e Use only blankets manufactured and or approved by Smiths Medical ASD e Warming unit must be calibrated by competent personnel authorized by Smiths Medical ASD e Federal law USA restricts this device to sale by or on the order of a physician Physical injury to the user and or patient may occur if these cautions are not followed e Ensure that the EQUATOR Convective Warmer IV pole mounting clamp is properly tightened before
61. rear of the device Verify that the Disconnect LED lights the beeper beeps and the blower stops Reconnect the hose Verify that the Disconnect LED s turns off and the device continues to run Check Pass for item 2 on the Checklist 44 4 Press the HI button 30 9 Disconnect the hose from the rear of the device Verify that the Disconnect LED lights the beeper beeps and the blower stops Wait for the temperature to rise to approximately 10 Reconnect the hose Verify that the Disconnect LED rs turns off the blower restarts and the temperature continues to increase toward 44 C 11 Press the AMB button Check Pass for item 3 on the Checklist EQUATOR Convective Warmer Service Manual 13 Chapter 3 Functional Test and Calibration Procedure Test 3 HI Temperature Test 14 This test verifies the HI temperature readings and speed of the airflow Note is very important to know the calibrated accuracy of the TA used for the following tests 1 Connect the TA with the restrictor attached to the end of the hose elbow Stretch the hose SW5 7 out from rear of device to its full length of 2 1 meters 7 ft from the enclosure to the end of the hose elbow Be sure the TA collar covers all of the slots at the hose elbow Set the TA to read air speed in feet minute and temperature in C If necessary press the OFF button then press the ON button Wait for t
62. river Electronic Assembly Exploded View Diagram EQUATOR Convective Warmer Service Manual 29 Chapter 4 Component Removal and Replacement Replace the Motor 1 Disconnect the power cord from the electrical outlet and from the rear of the device 2 Remove the enclosure top Refer to the Open the Enclosure procedure described at the beginning of this chapter 3 Open the Kurly Lok wire anchor to release the blue twisted wires and the black cable 4 Disconnect the cable at J2 on the power supply assembly and at J4 on the Mains Electronic Assembly Refer to Figure 4 3 Note Hefer to Figure E 4 in Appendix E for cable connections 5 Disconnect the quick connects in the blue wires Note Be careful not to stress the transformer T2 on the Control Electronic Assembly when disconnecting the quick connects in the blue wires 6 Loosen the two screws at the end of J2 on the Mains Electronic Assembly and remove the plug 7T Loosen the screws from pin 1 and pin 8 on J2 and disconnect the two heater wires 8 Remove the screw on the upper right corner of the power supply assembly and remove the ring terminal 9 Remove the four screws attaching the Mains Electronic Assembly to the stand offs and lift the electronic assembly away to allow access to the cap screw in the rear of the motor mounting plate 10 With a 5 32 Allen wrench remove the three cap screws in the motor mounting plate Note Some versions of the device may h
63. s 4 above setting during safety alarm test holding a temperature select button for 8 10 sec 1 Perform the Functional Test and Calibration Procedure Refer to Chapter 3 2 Control Electronic Assembly has failed Device runs at ambient but the Disconnect LED lights e when a temperature setting is selected Heater or heater circuit is open e Check connections at Mains Electronic Assembly e Check blue wires and quick connect terminals to the sensor transformer on the Control Electronic Assembly e See Troubleshooting below 44 EQUATOR Convective Warmer Service Manual Appendix B Troubleshooting Self Test Does Not Complete Note Where the test stops may be an indication of the area of trouble Symptom Possible Cause Solution Disconnect LED s is immediately on Check the thermistor cable connections for the hose and stays on no airflow is detected and the temperature reading is approximately 00 The temperature reading is between 1 Check that the hose air connector is fully inserted to the 00 and 30 interlock switch inside air outlet on the rear of the device 2 Disconnect the power cord from the electrical outlet and check physical function of the microswitch with a finger on the inside top of the air outlet There should be a distinct click as it operates 3 Try a second hose if the thermistor cable connection is suspect Note is no delay before start
64. sembly Electronic Assembly Motor Mounting J2 Heater Plate Wires Grommet Heater Wires Impeller Plenum Figure 4 3 Motor Exploded View Diagram 17 Install the new motor 18 Reassemble the device by performing the appropriate steps in reverse order Note When reinstalling the impeller observe the following Align the motor shaft and impeller flats e With the motor facing down slide the impeller onto the shaft so the distance between the bottom of the impeller and the motor mounting plate is the same as it was when removed Spin the impeller to be sure it spins true If it doesn t adjust the impeller on the shaft until the impeller blades spin true EQUATOR Convective Warmer Service Manual 31 Chapter 4 Component Removal and Replacement Note When reinstalling the motor mount assembly insert the heater wires through the grommet on the motor mounting plate Replace the Impeller Replacing the impeller requires removal of the motor mount assembly The impeller is located under the motor mounting plate 1 Perform the Replace the Motor procedure to remove the motor mount assembly but do not remove the motor from the mounting plate With the motor mount assembly removed measure the distance between the impeller and the motor mounting plate With the motor facing down measure the distance from the motor mounting plate to the bottom of the impeller approximately 1 5 When you reinstall the impeller you must ad
65. sembly Schematic 58 EQUATOR Convective Warmer Service Manual Appendix E Schematic Drawings 66 02 011 MOTOR CONTROLLER P4 60 24 010 MAINS INPUT 60 24 016 Mains Cable AC Filter Assy 70 02 103 Bead MAINS BOARD gl 2 70 06 025 MAINS DISTRIBUTION CABLE BLOWER 66 02 010 77 00 905 GROUND CABLE 77 00 901 77 00 90 J3 CABLE J4 CABLH 77 00 911 77 00 910 HOSE SWITCH CABLE 77 00 908 CURRENT 16 CABLE TRANSFORMER 7 00008 SWITCHING GROUND POWER SUPPLY 60 14 005 CABLE CABINET 7 7 SHIELD 77 00 016 SERVO CONNECTOR Ferrite Bead 70 02 102 CONTROL BOARD 60 40 048 Membrane Switch Assy 77 00 904 J5 CABLE Figure E 4 Interconnect Schematic EQUATOR Convective Warmer Service Manual 59 Appendix Schematic Drawings MOLEX 22 01 3027 R BK PIN MOLEX 08 50 0114 60 Standard Banana Plugs Figure E 5 M
66. ses verify that the following events occur Between 40 C and 42 C the UT LED stops flashing Between 46 and 48 the OT alarm sounds the OT LED 6 lights the blower stops and the control panel displays the temperature at which the OT alarm was activated Check Pass for item 18 and record the temperature reading from the control panel in item 19 on the Checklist Note f the expected test events were not obtained proceed to Test 10 in this test sequence to perform the readjustment procedures Ambient OverTemp Test Press the OFF button and then press the ON button The device will restart and proceed through the self test sequence If the device is hot let it cool to approximately 44 C before proceeding 4 the control panel until the button LED starts to flash As the temperature increases verify that the following events occur Between 46 and 48 C the OT alarm sounds the OT LED ed lights the blower stop and the control panel displays the temperature at which the OT alarm was activated Record the temperature reading from the control panel in item 20 on the Checklist Note f the expected test events were not obtained proceed to Test 10 in this test sequence to perform the readjustment procedures Press the OFF button EQUATOR Convective Warmer Service Manual 19 Chapter 3 Functional Test and Calibration Procedure Test 10 Ov
67. sure procedure in Chapter 4 WARNING Electrocution Hazard There no user serviceable parts inside the enclosure Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure 2 Elevate the EQUATOR Convective Warmer 1 2 or more off the table or bench top to allow for adequate airflow Keep rear air inlet unobstructed Be careful not to disconnect any wires from the Control Electronic Assembly when removing the top of the enclosure 3 Ground the motor mounting plate to the rear chassis with a clip lead while the enclosure is open Note Do not make a permanent ground connection between the motor mounting plate and the chassis If a permanent ground connection is made the device will fail the Electrical Safety Test because of high leakage current EQUATOR Convective Warmer Service Manual 9 Chapter 3 Functional Test and Calibration Procedure Preliminary Voltage Checks and Adjustments 1 Plug the EQUATOR Convective Warmer into the appropriate 110VAC 115VAC or 230VAC power outlet 2 With the DVM connected to the Test Points at TP100 and TPSG check the voltage measurements shown in the following table Make adjustments if necessary Refer to Figure 3 1 for the locations DVM DVM Min Val V Notes Test 100 2 048 2 052 Adjust R100 2 050V nom Vref 3 Connect the DVM to Test
68. the device on its side or hang each corner off the side of the working surface and tighten the four corner screws diametrically Reconnect the power cord to the electrical outlet and to the rear of the device EQUATOR Convective Warmer Service Manual 27 Chapter 4 Component Removal and Replacement Replace the Motor Driver Electronic Assembly 28 Note 7he Motor Driver Electronic Assembly is the large electronic assembly mounted vertically and to the left of the motor Note Hefer to the Interconnect Schematic in Appendix E for cable connections Disconnect the power cord from the electrical outlet and from the rear of the device Remove the enclosure top Refer to the Open the Enclosure procedure described at the beginning of this chapter Note High voltage in excess of 200VDC exists immediately after the device is turned off The voltage exists on the motor driver electronic assembly as a charge on the two large capacitors at the top of the electronic assembly It dissipates with time WARNING Electrocution Hazard There are no user serviceable parts inside the enclosure Only competent personnel knowledgeable in the safety procedures required for servicing live Mains parts shall be allowed to open the enclosure Open the Kurly Lok wire anchor to release the blue twisted wires and the black cable Disconnect the AC Mains cable at P4 on the Motor Driver Electronic Assembly Refer to Figure 4 2
69. ust be calibrated by Smiths Medical ASD or Smiths Medical ASD authorized personnel Tools and Equipment Required The following tools and equipment are needed to perform the removal and replacement procedures Loctite 495 Super Bonder Loctite 222MS e 5 32 Allen wrench e 3 8 spin tite or socket wrench Phillips head and flat head screwdrivers EQUATOR Convective Warmer Service Manual 25 Chapter 4 Component Removal and Replacement Open the Enclosure Use the following procedure to open the enclosure to access internal components that need removal and replacement Remove the Enclosure Top Disconnect the power cord from the electrical outlet and from the rear of the device Remove the device from pole if pole mounted Lay the device on its side and loosen the four slotted head captive corner screws Refer to Figure 4 1 3 Stand the device on its base with the control panel facing to the front 4 Gently lift the top off and lay it upsidedown to the right of the base Be careful 26 not to dislodge any cables Note High voltage in excess of 200VDC exists immediately after the device is turned off The voltage exists on the motor driver electronic assembly as a charge on the two large capacitors at the top of the electronic assembly It dissipates with time WARNING Electrocution Hazard There are no user serviceable parts inside the enclosure Only competent personnel knowledgeable in th
70. vance it on the shaft to the same distance Remove the impeller from the shaft by wedging two screwdrivers under opposite sides and prying the impeller evenly off the shaft Install the new impeller Observe the following Align the motor shaft and impeller flats e With the motor facing down slide the impeller onto the shaft so the distance between the bottom of the impeller and the motor mounting plate is the same as it was when removed Spin the impeller to be sure it spins true If it doesn t adjust the impeller on the shaft until the impeller blades spin true 5 Reassemble the device by performing the appropriate steps in reverse order Replace the Heater 32 Replacing the heater requires removal of the motor mount assembly The heater is located under the motor mounting plate 1 Perform the Replace the Motor procedure to remove the motor mount assembly but do not remove the motor from the mounting plate or the impeller from the motor With the motor mount assembly removed lift out the plenum Be sure to guide the heater wires through the exit hole in the plenum Refer to Figure 4 4 Note Some plenums have a separate air outlet Remove both pieces if this is the case EQUATOR Convective Warmer Service Manual One piece Plenum h Heater Wire l N Chapter 4 Component Removal and Replacement Gasket Heater Air Outlet Figure 4 4 Heater Exploded View Diagram 3 R
71. y J4 on the Control Electronic Assembly is NOT lit Refer to Figure 3 3 for the location Eo ans I Ta 072 METER E 4 016 UT Nor TP41 15 16 sm as na TP10 A GND E EOR TRIE R123 D e m iaceo FANPWR Rw 20 CSD 013 1 M y f E o R53 TP18 HN i 1 5VI5VS Q12 TPA4 05 SAFETY R157 a x R51 HEAT CONT 07 EE D Ry 33 5 1 D2 m C7 PG m z m m 58 C6 5VF R61 R6o R62 Rea i 042 C24 2 m mi Ii B TP2 EN sm C25 d o i m Bere ag um E E POWER m P R63 R58 SUPPLY SAFETY LED J7 Figure 3 3 Location for The SAFETY LED near J4 Press the OFF button and then press the ON button The self test should stop on the first test A Reconnect the thermistor cable The self test should continue to completion Disconnect the hose from the

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