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Figure 3-9.  Brake System Circuit

3-11.  BRAKE CIRCUIT  DIAGNOSIS CHART

Problem

Brakes will not set properly

NOTE

If brakes have been released with the
Emergency Brake Release Valve,
brakes will not reset until BRAKE UN-
LOCK Circuit has been activated.

Brakes Will Not Stay Locked

Brakes will not retract properly

Reason

Emergency Brake Release Valve Open or Defec-
tive
Spool Valve Not Centered
Defective Check Valve
Low on Oil
Pressure Relief Valve Not Set Properly
Pinched Hose
Defective Mini-Valve
Defective Relay Box or Pendant Control
Loose Retaining Hardware

Emergency Brake Release Valve Open or Defec-
tive
Defective or Dirty Check Valve
Oil Leakage in Circuit
Leaking "O" Ring Inside Cylinder

Incorrect Speed Adjustment
Defective Check Valve
Spool Valve Not Centered
Defective Mini-Valve
Pinched Hose
Defective Solenoid or Wiring
Defective Relay Box or Pendant Control
Defective Brake Cylinder

BRAKE

CYLINDER

82206-309

CHECK

VALVE

SPEED

CONTROL

MINI-

VALVE

PLUMBING

TERMINAL

FLEXIBLE

HOSE

BRAKE

CYLINDER

BRAKE

CYLINDER

BRAKE

CYLINDER

EMERGENCY

BRAKE RELEASE

VALVE

RETURN

TO RESERVOIR

COPPER

LINE

RETAINING

HARDWARE

Содержание 3501B EZ SLIDE

Страница 1: ...SURGICAL TABLE MAINTENANCE MANUAL MODEL 3501B EZ SLIDE 1 07...

Страница 2: ......

Страница 3: ...ontrols 15 SECTION II MECHANICAL TABLE ADJUSTMENTS 16 2 1 Back Section Gear Mesh Adjustment 16 2 2 Hydraulic Cylinder Adjustment 16 a Back Section 16 b Leg Section 16 c Trendelenburg Cylinder Ball Joi...

Страница 4: ...ral 32 4 2 Components 32 SECTION V ELECTRICAL TROUBLESHOOTING 34 5 1 General 34 5 2 Troubleshooting Notes 34 5 3 Main Switch 34 5 4 Batteries 35 5 5 Capacitor Rectifier AC120V Transformer 36 5 6 Penda...

Страница 5: ...Check Pendant Control if applicable Check Oil Level in Reservoir Check For Hydraulic Leaks Check Pressure Relief Valve Setting Check All Table Functions Check Side Rails and Gravity Stops Check Velcro...

Страница 6: ...THESIQUES INFLAMMABLES Table Capacity Lift 700 lbs Articulate 600 lbs See Operators Manual for Limitations THIS PRODUCT COMPLIES WITH RADIA TION PERFORMANCE STANDARD 21 CFR AT THE TIME OF MANUFACTURE...

Страница 7: ...ments Current Leakage Power Cord 120 VAC 60Hz 450 Watts Less than 100 micro amps 15 feet w hospital grade connector removable 12 1 2 18 1 4 25 23 14 1 2 19 3 4 5 1 2 3 83 TOP VIEW 90 60 14 1 2 40 1 2...

Страница 8: ...re and volume c Pressure Relief Valve Provides an alternate oil path when the hydraulic cylinders reach the end of their stroke d Electro HydraulicMini ValveAssemblies These direct the fluid to the ap...

Страница 9: ...aulic cylinders reach the end of their stroke and the pump continues to run If this path were not provided the pump motor would stall because the oil cannot be compressed The pressure relief valve is...

Страница 10: ...ment of the table One check valve is provided in a 3 way mini valve 4 Speed Controls There are two speed controlsineach4 waymini valve Theyareneedle valve type controls which restrict the volume of oi...

Страница 11: ...is routed around the speed control through a bypass valve to the output port The right speed control controls the speed of the table function by restricting the flow of oil going back into the reservo...

Страница 12: ...ders Slide 1 double action cylinder 1 Trendelenburg Back Section and Leg Sec tion Cylinders The double action cylinders are closed at one end and have a movable piston with hydraulic fluid on both sid...

Страница 13: ...tedinthecylinderisreturned to the oil reservoir through the mini valve due to the table top weight A slider support assembly is used to support the weight of the upper table section A stainless steel...

Страница 14: ...3 way single check valve type mini valve e Elevation Cylinder Return Circuit A three way single check valve type mini valve controls both the elevation and return circuits The elevation circuit operat...

Страница 15: ...tightened securely when not in use If the emergency brake release valve has been operated the UNLOCK but ton on the pendant control may have to bepressedbeforebrakeswilllockagain If the emergency bra...

Страница 16: ...never a hydraulic line or compo nent is replaced bleed the air out of the lines using the pump pressure by acti vating the function before making the finalconnection Thenoperatethefunc tion until it s...

Страница 17: ...teral Tilt 7 seconds Leg Up 25 seconds Leg Down 15 seconds Kidney Lift 7 seconds Slide 20 seconds A pressure gauge should be used to set the speed of the back section Trendelenburg and flex control fu...

Страница 18: ...2 2 Tighten the set screws and replace the seat section top when the adjustment is com pleted Figure 2 1 Eccentric Cam Adjustment 2 2 Hydraulic Cylinder Adjustment The hydraulic cylinder rams that co...

Страница 19: ...s will operate correctly With table top centered the distance from the end of the Slide piston to end of cylinder is Head End 82 mm Foot End 120 mm The table top should slide 7 1 2 toward the head and...

Страница 20: ...s and slides with white lithium based grease 4 Adjust rollers so top slides smoothly with no up or down movement of the table top 5 When adjustment is complete tighten set screws replace covers and to...

Страница 21: ...gaparticularfunction refer to the appropriate oil circuit diagram and the list of possible problems SECTION III HYDRAULIC TROUBLESHOOTING 3 1 Precautions Before attempting to troubleshoot any hydrauli...

Страница 22: ...en Weight Distribution Incorrect Speed Adjustment Defective Check Valve Spool Valve Not Centered Galled Slider Assembly Defective Solenoid or Wiring Defective Relay Box or Pendant Control Uneven Weigh...

Страница 23: ...oint or Retainer Nut Defective or Dirty Check Valve Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil Problem Trendelenburg function moves improperly Trendelenburg function chatters o...

Страница 24: ...ef Valve Not Set Properly Defective Solenoid Defective Relay Box or Pendant Control Defective or Dirty Check Valves Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil 3 5 LATERAL TILT...

Страница 25: ...es Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil Problem Back Section or Trendelenburg function moves improperly NOTE If Flex System does not function prop erly check the back sec...

Страница 26: ...Bridge Raised Loose Retaining Hardware Microswitch out of adjustment Loose Table Top Defective or Dirty Check Valves Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil Problem Back Sec...

Страница 27: ...dware Microswitch out of adjustment Loose Table Top Defective or Dirty Check Valves Oil Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil Problem Leg function moves improperly Leg functio...

Страница 28: ...ive Mini Valve Pressure Relief Valve Not Set Properly Defective Solenoid Defective Relay Box or Pendant Control Loose Retaining Hardware Microswitch out of adjustment Loose Table Top Defective or Dirt...

Страница 29: ...Properly Defective Solenoid Defective Relay Box or Pendant Control Bypass Valve out of Adjustment Defective or Dirty Check Valve OiI Leakage in Circuit Air Inside Cylinder Pinched Hose Low on Oil Lif...

Страница 30: ...roperly Pinched Hose Defective Mini Valve Defective Relay Box or Pendant Control Loose Retaining Hardware Emergency Brake Release Valve Open or Defec tive Defective or Dirty Check Valve Oil Leakage in...

Страница 31: ...ING TERMINAL ELEVATION 1 240 6 0 0 L F 7 5 0 L R 6 7 0 R R 6 0 0 R F TO BRAKE CYLINDERS PRESSURE RELIEF VALVE ASSEMBLY MINI VALVES 1 3 2 4 5 7 6 9 8 10 11 13 2 7 1 5 2 4 9 7 6 3 105 140 115 140 130 14...

Страница 32: ...con nected from the kidney lift system for any reason use the following procedure to bleed the air from the system 1 Remove the kidney lift top section and begin the procedure with both pistons in the...

Страница 33: ...reaches the end of the down stroke before the other one an adjust ment is needed Use the following procedure to adjust the system 1 If the right side bottoms out before the left side open the bypass v...

Страница 34: ...three wire fifteen foot long removable UL listed cord with a three prong hospital grade plug 4 2 Components Refer to figure 4 1 for the relationship of the elec trical components a Wires Connectors S...

Страница 35: ...A CN2 SOLENOID COILS 24VDC HN1 HN2 HN4 HN3 MAIN POWER SWITCH BATTERY INDICATOR FOOT CONTROL CONNECTOR 15A CIRCUIT BREAKER TWIST LOCK POWER CORD RELAY BOX BUZZER CN3 CN8 HN5 HN9 CN11 CN10 CN4 PUMP CN7...

Страница 36: ...itch to the BATTERY mode If thefunctionnowoperates theproblemis probablylocatedbetweenthepowercord andtherelaybox Ifthefunctionalsofails in battery operation use the auxiliary switches If the function...

Страница 37: ...uttononthe pendant control so that the pump motor continues to runandusingaDCvoltmeter checkthevoltagedrop of each battery individually See figure 5 3 5 Meter should read 12VDC 1VDC Figure5 2 BaseConn...

Страница 38: ...figure 5 5 5 5 Capacitor Rectifier AC120V Transformer The Capacitor Rectifier Unit contains the battery charging system as well as the components for AC120V operation except the transformer a Transfo...

Страница 39: ...contains illuminated circuit board mounted switches andamicroprocessor Theencodedoutputfromthe pendant control is serial bit stream logic The output signal is transmitted to the micro pro cessors in...

Страница 40: ...eter test the continuity between the corresponding pins in con nectors HN7 to CN7 and HN7 to HN8 Refer to figure 5 8 If the correct readings are obtained this part of the circuit is okay and the probl...

Страница 41: ...A4 8 B4 Red Green White Brown Yellow Orange Green Brown White Blue 9 A5 10 B5 11 A6 12 B6 13 A7 14 B7 15 A8 16 B8 Black Blue White Gray Yellow White Red White Orange White COLOR PIN NO COLOR CN2 B8 B...

Страница 42: ...into the 120VAC supply wall receptacle DisconnectconnectorCN4 leaveallotherconnec tors connected 2 Using a DC voltmeter test input power for both the BATTERY and AC120V operating modes See figure 5 11...

Страница 43: ...bout 7 seconds If the brakes are already locked no output is provided TheBRAKEUNLOCKbuttonactivates another timer in the relay box which allows continuous output for the brake release function for app...

Страница 44: ...r if cor rect meter reading is not received b CN4 to Pump Test 1 DisconnectconnectorsCN4andHN4 Leave all other connectors connected 2 Using an ohmmeter test for continuity between the pins of CN4 and...

Страница 45: ...re the resistance between the two pins at theconnectorforthesolenoidinquestionasshown in figure 5 17 Polarity of meter leads is not important 2 The meter should read approximately 16 ohms at room temp...

Страница 46: ...st HN4 at pin 1 and pin 2 with a DC voltmeter Meter should read approximately 24 28 volts when any function button is activated If no voltage is present use an ohmmeter to test the continuity from HN4...

Страница 47: ...id toward the foot end the back section will not go below horizontal If the top is slid toward the head end the leg section will not go more than 45 below horizontal The return to level positioning in...

Страница 48: ...connector pin locations Figure 5 22 Return Inhibit Micro Switch Test 5 13 Micro Switch Troubleshooting If a problem is suspected in the return positioning circuits disconnect the connector CN10 from...

Страница 49: ...nnector CN10 and terminal strips TM1 and TM2 or in the wiring from the switch to connector Further tests will have to be made to determine the exact problem Figure 5 23 Trendelenburg Return Switches 8...

Страница 50: ...5 TM1 4 3 23 4 NO When table is in Tilt Left Position NS 3 brings the top back to level When table is in Tilt Right Position NS 4 brings the top back to level 82306 524 TEST AT PINS 5 24 NS 5 BACK SE...

Страница 51: ...itch Position Open Closed Open Meter Reading Infinity 0 Infinity When Top is slid toward Head CS 2 will not allow Leg Section to go more than 45 below horizontal CS 1 CS 2 NC NC COM COM NO BLACK BLACK...

Страница 52: ...to slide toward Head CS 4 NC N0 COM NC PURPLE BROWN WHITE PURPLE BROWN WHITE CN10 TM2 8 TM2 2 26 8 Figure 5 28 Back Up Inhibit Switches 82306 527 TEST AT PINS 11 26 CS 3 BACK UP INHIBIT Table Position...

Страница 53: ...the pendant control 2 Carefully loosen the allen bolts securing the switch bracket and adjust the switches as needed See figure 5 31 Figure 5 31 Micro Switch Adjustment Figure 5 30 Kidney Lift Inhibit...

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Страница 56: ...5000 36th Street S E Grand Rapids MI 49512 1 800 SKYTRON 1 616 957 0500 FAX 1 616 957 5053...

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