Skytron ELITE Series Maintenance Manual
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Skytron ELITE Series Maintenance Manual

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ELITE SERIES SURGICAL TABLES
MAINTENANCE MANUAL
MODEL ELITE 6002
INCLUDING BATTERY MODELS
REV 8/05
Page 59

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Summary of Contents for Skytron ELITE Series

  • Page 1 ELITE SERIES SURGICAL TABLES MAINTENANCE MANUAL MODEL ELITE 6002 INCLUDING BATTERY MODELS REV 8/05 Page 59...
  • Page 2 Page 52...

  • Page 3: Table Of Contents

    3-8. LEG SECTION DIAGNOSIS CHART ..................18 3-9. BRAKE CIRCUIT DIAGNOSIS CHART ..................19 3-10. Flexible Hose Identification and Placement ................... 20 REV 8/05 Although current at time of publication, SKYTRON's policy of continuous development makes this manual subject to change without notice. Page 53...
  • Page 4 Table of Contents (continued) SECTION IV ELECTRICAL SYSTEM ....................22 4-1. General............................22 4-2. Components ..........................22 4-3. Battery Model Components ......................22 SECTION V ELECTRICAL SYSTEM TROUBLESHOOTING ............. 23 5-1. Troubleshooting Notes ........................23 5-2. Main Switch ........................... 23 5-3.
  • Page 5 • Check brake pads for wear and inspect brake cylinders for proper operation. Only facility-authorized SKYTRON trained, maintenance personnel should troubleshoot the SKYTRON 6002 Surgical Table. Trouble shooting by unauthorized personnel could result in personal injury or equipment damage. How to contact us: Skytron 5000 36th St.
  • Page 6 EQUIPMENT LABELS AND SPECIFICATIONS INDICATES DANGEROUS VOLTAGE, 120 V, 60 Hz CLASS I DEFIBRILLATION PROOF, TYPE B EQUIPMENT- IPX4 RATED. INTERNALLY POWERED EQUIPMENT TYPE B EQUIPMENT PROTECTIVE GROUNDING. IN ORDER TO ENSURE PROPER GROUNDING RELIABILITY, THIS TABLE MUST BE CONNECTED TO A PROPERLY GROUNDED HOSPITAL GRADE OUTLET.
  • Page 7 6002 Series General Purpose Surgical Table Specifications 15" 19-1/2" 21-1/2" 24" 10" 13" 20" 75" TOP VIEW 76" 60˚ 22" 5-3/4" 3" 90˚ 43" MAX. 28" MIN. 5-3/4" 8" 35-1/2" 19" SIDE VIEW END VIEW Electrical Specifications Power requirements 120 VAC, 60Hz, 300 Watts Current Leakage Less than 100 micro amps Power Cord...
  • Page 8 Page 52...

  • Page 9: Section I Hydraulic System

    SECTION I HYDRAULIC SYSTEM 1-1. General Electro-Hydraulic System c. Pressure Relief Valve - Provides an alternate oil The hydraulic system (with the exception of the path when the hydraulic cylinders reach the end of hydraulic cylinders and hoses) is contained within their stroke.

  • Page 10: Component Operation

    1-2. Component Operation The main component of the valve is an adjustable a. Motor/Pump Operation spring loaded plunger that is pushed off from its seat by the oil pressure. The oil then flows back into The motor/pump assembly is a gear type pump the reservoir.

  • Page 11: Mini-Valves

    c. Mini-Valves The operation of the mini-valves is identical for all Also, by using this control method, it doesn’t matter table functions except the elevation and Single what size cylinder and piston is used because the Action Brake circuits. These two hydraulic circuits speed can be controlled by restricting the return oil.

  • Page 12: Mini-Valve Right Port Activated

    e. Mini-Valve Right Port Activated f. Mini-Valve Left Port Activated (See figure 1-6) (See figure 1-7.) Slave Cylinder Piston Moves to Left Slave Cylinder Piston Moves to Right Right Mini-Valve Port is Supply Line Left Mini-Valve Port is Supply Line Left Mini-Valve Port is Return Line Right Mini-Valve Port is Return Line INLET...

  • Page 13: Hydraulic Cylinders (Slave Cylinders)

    g. Hydraulic Cylinders (Slave Cylinders) O-RING O-RING There are several different types of hydraulic cylin- ders used in the table that activate the control functions. With the exception of the elevation and PISTON brake cylinders, all operate basically the same way.

  • Page 14: Elevation Cylinder Return Circuit

    3. Lateral Tilt Assembly - The lateral tilt assem- 5. Brake Cylinders - The brake cylinders are bly consists of two cylinders, pistons and connect- single action type similar to the elevation cylinder. ing rods. The connecting rods attach to the lateral The movable piston's ram is connected to a brake tilt lever which connects to the table side frames.

  • Page 15: Brake System

    The mini-valve used in the elevation circuit con- tains only one check valve (all four-way mini- valves use two check valves). The check valve is BRAKE SYSTEM used to trap the oil in the elevation cylinder thereby supporting the table top. When the top is being lowered the check valve is mechanically held open by the pilot plunger through pump pressure.

  • Page 16: Emergency Brake Release

    k. Flex/Reflex System j. Emergency Brake Release The emergency brake release is simply a manually The Flex/Reflex system used on the present tables incorporates an additional mini-valve (7 total) which operated bypass valve connected in parallel to the connects the trendelenburg and back section hy- brake cylinders and the oil reservoir.

  • Page 17: Hydraulic Adjustments

    1-3. Hydraulic Adjustments a. Fluid Level. c. Pressure Relief Valve The pressure relief valve is adjusted by turning the The fluid level should be approximately 1/2" below adjustment nut until the desired pressure is reached. the filler hole or gasket surface. If additional fluid is needed, remove the filler vent cap with a phillips screwdriver and add fluid through this opening To adjust:...

  • Page 18: Speed Controls

    d. Speed Controls A pressure gauge should be used to set the speed The speed controls restrict the volume of oil return- of the back section, trendelenburg and flex control ing back to the reservoir thereby controlling the functions. speed of each control function. To adjust: All four-way mini-valves, have two speed controls located in the ends of each valve body.

  • Page 19: Section Ii Mechanical Table Adjustments

    SECTION II MECHANICAL TABLE ADJUSTMENTS 2-1. Back Section Gear Mesh Adjustment To adjust: Loosen the cam locking nuts located inside the The gear mesh is adjusted by the use of an eccen- table side frames. Use a spanner wrench to turn tric cam.

  • Page 20: Section Iii Hydraulic Troubleshooting

    SECTION III HYDRAULIC TROUBLESHOOTING 3-1. Precautions Once the problem has been determined, concen- Before attempting to troubleshoot any hydraulic trate on that particular hydraulic circuit or control problem on the table, please read through the pre- function. cautions and notes below. Listed below are the hydraulic components that are common with all hydraulic circuits.

  • Page 21: Elevation Diagnosis Chart

    3-3. ELEVATION DIAGNOSIS CHART Problem Reason Pressure Relief Valve Not Set Properly Table will not elevate properly Low on Oil Spool Valve Not Centered Defective Pump Defective Mini-Valve Defective Solenoid or Wiring Defective Relay Box or Pendant Control Table will not descend properly Incorrect Speed Adjustment Bad Check Valve Spool Valve Not Centered...

  • Page 22: Trendelenburg Diagnosis Chart

    3-4. TRENDELENBURG DIAGNOSIS CHART Problem Reason Trendelenburg function moves improperly Incorrect Speed Adjustment Spool Valve Not Centered Bad Check Valves Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid or Wiring Defective Relay Box or Pendant Control Defective or Dirty Check Valve Trendelenburg function chatters or loses position Oil Leakage in Circuit...

  • Page 23: Lateral Tilt Diagnosis Chart

    3-5. LATERAL TILT DIAGNOSIS CHART Problem Reason Lateral tilt function moves improperly Incorrect Speed Adjustment Spool Valve Not Centered Bad Check Valves Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid Defective Relay Box or Pendant Control Lateral tilt function chatters or loses position Defective or Dirty Check Valves Oil Leakage in Circuit...

  • Page 24: Flex System Diagnosis Chart

    3-6. FLEX SYSTEM DIAGNOSIS CHART Problem Reason Back Section or Trendelenburg function moves Incorrect Speed Adjustment (Trendelenburg, Back improperly section or Flex - check with gauge) Spool Valve Not Centered Bad Check Valves NOTE Low on Oil Pinched Hose If Flex System does not function prop- Defective Mini-Valve erly, check the back section and tren- Pressure Relief Valve Not Set Properly...

  • Page 25: Back Section Diagnosis Chart

    3-7. BACK SECTION DIAGNOSIS CHART Problem Reason Back Section function moves improperly Incorrect Speed Adjustment Spool Valve Not Centered Bad Check Valves Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid Defective Relay Box or Pendant Control Defective or Dirty Check Valves Back Section function chatters or loses position Oil Leakage in Circuit...

  • Page 26: Leg Section Diagnosis Chart

    3-8. LEG SECTION DIAGNOSIS CHART Problem Reason Leg function moves improperly Incorrect Speed Adjustment Spool Valve Not Centered Bad Check Valves Low on Oil Pinched Hose Defective Mini-Valve Pressure Relief Valve Not Set Properly Bad Solenoid Defective Relay Box or Pendant Control Leg function chatters or loses position Defective or Dirty Check Valves Oil Leakage in Circuit...

  • Page 27: Brake Circuit Diagnosis Chart

    3-9. BRAKE CIRCUIT DIAGNOSIS CHART Problem Reason Brakes will not set properly Emergency Brake Release Valve Open or Defec- tive Spool Valve Not Centered NOTE Bad Check Valve Low on Oil If brakes have been released with the Pressure Relief Valve Not Set Properly Emergency Brake Release Valve, Pinched Hose brakes will not reset until BRAKE UN-...

  • Page 28: Flexible Hose Identification And Placement

    3-10. Flexible Hose Identification and Placement The following figures will show the correct place- ment of the flexible hydraulic hoses used in the table and their respective number codes. Figure 3-8 shows the hose connections to the plumbing terminal. Figure 3-10. Leg Section Hoses Figure 3-11 shows the placement and number NUMBER FUNCTION...
  • Page 29 Figure 4-1. 6002 Electrical Circuit Block Diagram Page 21...

  • Page 30: Section Iv Electrical System

    SECTION IV ELECTRICAL SYSTEM 4-2. Components 4-1. General The complete electrical system (with the excep- Refer to figure 4-1 for the relationship of the elec- tion of the hand-held pendant control and the return trical components. circuit micro-switches) is contained within the base of the table.

  • Page 31: Section V Electrical System Troubleshooting

    SECTION V ELECTRICAL SYSTEM TROUBLESHOOTING 5-1. Troubleshooting Notes 1. Plug the power cord into the 120VAC power The basic operation of each component will be supply (wall receptacle) and turn ON the main defined along with a drawing and explanation on switch.

  • Page 32: Pendant Control

    b. Test Results If you do not receive the correct voltage measure- 1. Unplug the pendant control from the base of ment, the problem would have to be in the wires, the table. You will be checking the cord side main switch, fuses, or power cord.

  • Page 33: Relay Box

    d. Test Results: b. Test Results: If you do not receive the correct voltage reading, If you do not receive continuity between any of the the wiring or connector pins may be faulty. Discon- pins, either the micro-switch in the Pendant Control nect connector CN8 from the relay box and using is defective or a wire is broken.
  • Page 34 WARNING d. Test Results: Line voltage (120 VAC) will be mea- If you do not receive the correct meter readings, the sured in this test. Do not touch uninsu- relay box or wiring is defective. If the correct lated connector pins or meter test leads. readings are obtained, this part of the relay box is okay.

  • Page 35: Solenoids

    f. Test Results: WARNING If you do not receive the correct meter readings, the relay box or wiring is defective and should be Line voltage will be measured in this replaced. test. Do not touch uninsulated connec- tor pins or meter test leads. NOTE b.
  • Page 36 3. Measure the resistance between either pin NOTE and ground. Whenever there are several compo- 4. Meter should read infinity. nents of the same type, a defective unit can also be detected by substituting a known good unit or wire connector. In e.

  • Page 37: Motor/Pump Assembly

    5-6. Motor/Pump Assembly 3. Use a voltmeter capable of measuring 120 The electric motor is a capacitor start type with a VAC and measure the following connector pins in rating of 120 VAC, 200 watts. The field windings connector CN15. See figure 5-10. are protected with a thermal protector that will open the winding circuit if the motor is run continuously for approximately 10 minutes.
  • Page 38 e. Test Results: The meter needle should move up scale and then back down to infinity. This would indicate that the capacitor is storing an electrical charge. NOTE The capacitor may have to be dis- charged first (by shorting pins 2 and 3 together) before you will be able to see the ohmmeter needle swing up the scale.

  • Page 39: Return To Level Micro-Switches

    5-7. Return-to-Level Micro-Switches. The return-to-level feature is activated by a single The micro-switches are wired to the relay box button on the pendant control and automatically through a riser cord and to the 15 pin connector levels the major table functions, lateral tilt, tren- CN2.
  • Page 40 NOTE operation at the appropriate pin numbers for the micro-switch in question as shown in figures 5-14 It is normal for the back section to move through 5-18. up if the RETURN button is pushed when connector CN2 is disconnected from the relay box.
  • Page 41 Figure 5-14. Trendelenburg Return Switches CN10 Test at pins 3 & 9 Test at pins 4 & 9 Figure 5-15. Lateral Tilt Return Switches Page 33...
  • Page 42 NS-6 RISER CORD CN10 PURPLE WHITE/BLUE CN10 BLUE PINK CN10 RISER CORD NS-5 Test at pins 5 & 14 Test at pins 6 & 14 Figure 5-16. Back Section Return Switches b. Switch Adjustment. 2. For all switches except the Leg Section switches, carefully loosen the switch retaining If proper readings are not obtained during test or if screws, and adjust the switches as needed.
  • Page 43 6002B SOLENOID COIL 24VDC PENDANT PENDANT CONTROL CONTROL MINI-VALVES AUXILIARY RETURN CONNECTOR CIRCUIT CN14 CN10 CN13 RELAY BOX AUXILIARY SWITCHES CAPACITOR BATTERIES PUMP SWITCH-OVER RELAY CN19 CN12 22 VAC FROM TRANSFORMER CN51 FUSE 120 VAC TO 15AMP CHARGER TRANSFORMER CN14 CN15 CN18 MAIN...

  • Page 44: Section Vi -6002B- Battery Model, Electrical Troubleshooting

    6002B SECTION VI -6002B- BATTERY MODEL, ELECTRICAL TROUBLESHOOTING 6-1. General NOTE The battery table components operate on 24VDC. •On the battery model tables, trouble- The internal charging system also incorporates the shooting should begin by switching components to transform the 120VAC input to the operating mode.

  • Page 45: Batteries

    6002B charging system automatically keeps the batteries 3. Use an AC voltmeter capable of measuring at the proper charge level when the AC120V oper- 120 VAC and measure the voltage between pins 1 ating mode is ON. The charging system will oper- and 2 (black and white wires) located in connector ate while the table is being operated in the AC120V CN15.

  • Page 46: Battery Charging Box/Ac120V Transformer

    6002B CN51 6-5. Battery Charging Box/AC120V Transformer (5) RED / WHITE The Battery Charging Box contains the battery (6) BLUE / WHITE charging system as well as the components for AC120V operation (except the transformer). BLACK a. Transformer Test (2) BROWN (1) BROWN 1.

  • Page 47: Switch-Over Relay

    6002B 6-6. Switch-Over Relay RELAY BOX RELAY BOX SIGNAL OUT a. Switch-Over Relay in OFF Position S-O RELAY FUSE The Switch-Over Relay supplies the 24 volt input power from either the BATTERY or AC120V oper- ating modes to the relay box for table operation. In the normal OFF position, BATTERY power is sup- plied to the relay box.

  • Page 48: Pendant Control

    6002B 6-7. Pendant Control between pins 21 and 22. See figure 6-12. The Pendant Control consists of 15 micro-switches (buttons). When any of the circuits are completed 3. Ohmmeter must show continuity between (by depressing a function button) the appropriate the pins that are indicated when the appropriate relay contacts (located in the relay box) close and buttons are pressed.
  • Page 49 6002B c. LED Test The BATTERY and AC120V power ON indicators can be checked with an LED tester. Test BAT- TERY indicator at pin 1(+) and pin 2(-) of 24 pin Pendant Control connector. Test AC120V indica- tor at pin 1(+) and pin 3(-). See figure 6-12. If no LED tester is available the LEDs can be tested by applying 5 volts to the appropriate pins.

  • Page 50: Auxiliary Switches

    6002B 6-8. Auxiliary Switches The following tests will determine if the auxiliary meter, test the operation of an individual switch switches are functioning properly. with the (+) test lead at the center terminal of the switch and the (-) test lead at the terminal opposite a.

  • Page 51: Relay Box

    6002B 6-9. Relay Box The power supply is directly connected to the relay contacts. When these contacts are closed, 24 volts is supplied to the solenoids which are mounted on the hydraulic mini-valves. One relay is used to supply power to the pump/motor and is always activated no matter what control function is se- lected.
  • Page 52 6002B d. Checking Output to Pendant Control NOTE Activate BATTERY operating mode by switching Main Power Switch OFF and momen- The Relay Box connectors CN1 (Pen- tarily placing a jumper wire between pin 21 and pin dant Control), and CN8 (Auxiliary Base 22.
  • Page 53 f. Checking Output to Solenoids This test checks the voltage that is used to energize the solenoids. 1. Activate either BATTERY or AC120V oper- ating mode. NOTE •The Brake Lock function is activated by pressing any function button (except BRAKE UNLOCK). A timer in the Relay Box allows continuous output for about 7 seconds.

  • Page 54: Main Wire Harness Continuity Tests

    6002B 6-10. Main Wire Harness Continuity Tests b. CN4 to CN12 Test If correct meter readings are not received in tests 1. Disconnect connectors CN4 and CN12. between components, before replacing the com- Leave all other connectors connected. ponents, test the Main Wire Harness to be sure all connectors and wires are making a good connec- Using an ohmmeter, test for continuity tion.

  • Page 55: Solenoids

    6002B a. Solenoid Test 6-11. Solenoids The solenoids are energized by 24 volt potential The following tests will check the voltage applied to the solenoids and the resistance of the solenoid that is controlled by the relay box. coil. The solenoid windings are protected from exces- sive heat by an internal thermal fuse that will open b.
  • Page 56 6002B d. Test #2 NOTE The solenoid can be checked out using an ohm- meter R x 1 scale. •The appropriate pendant control but- ton must be pushed during this test. The motor will run when this test is 1. Measure the resistance between the two performed, and the brake locking sole- pin connector in question as shown in figure 7-24.

  • Page 57: Motor/Pump Assembly

    6-12. Motor/Pump Assembly b. Motor Resistance Test The hydraulic pump motor is a 24 volt DC electric The motor can be statically checked for resistance motor. The oil pump unit is attached to the bottom using an ohmmeter. This test is not 100% accurate of the motor and is a gear type displacement because you are checking the motor with very low pump with a pumping capacity of .4 liter per min.

  • Page 58: Section Vii Electrical System Adjustments

    SECTION VII ELECTRICAL SYSTEM ADJUSTMENTS 7-1. Relay Box Adjustments - Models 6002 & 6002B The Relay Box contains variable resistors for ad- b. Brake Set Timer justing the operating timers for the BRAKE SET The Brake Set Timer is set for about 7 seconds and and BRAKE UNLOCK functions.
  • Page 59 Figure 7-2. Relay Box Adjustments Model 6002B Page 51...
  • Page 60 Original printing -------------- 5/03 Revised -------------------------- 8/05...
  • Page 61 Page 52...
  • Page 62 5000 36th Street S.E., Grand Rapids, MI 49512 1-800-SKYTRON or 1-616-957-0500 • FAX 1-616-957-5053 Page 58...

This manual is also suitable for:

Elite 6002Elite 6002b

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