Repair and Replacement Instructions Genesis Desking Lift System

Transcription

1 Field Service Guide for Lift System Components Controllers, Motors, Cables and Switches Repair and Replacement Instructions KI-62057R1/PDF/309 Used with written consent. Copyright, Suspa Inc., 2002 Before servicing, please carefully read these instructions and keep for future reference. D Basic Switch D Memory / Display Switch D Motor with 0.9m Cable D Leg Controller, Programmed D Leg Controller, Programmed Controller programs are protected under US and International Copyright Law. Reproduction without written consent of Suspa Inc. is strictly prohibited. Some of the components of this system or their usage may be protected by US and foreign patents. Contents Important Safeguards...2 General Information about Table Lift Components...3 Field Service is Required for the Following...4 Components Necessary for Field Service...4 How to Reset a Controller...4 Glossary...5 Sequence of Steps for Table Service...6 Appendix A - Ratings...7 Appendix B - Trouble Shooting Guide...9 1

2 Important Safeguards When using any motorized electrical device, basic precautions should always be followed, including the following: This system of components is designed to make office desks / tables height adjustable. Do not use for anything other than its intended purpose. Inspect the system for damage from shipping before installing or connecting to power. Do not attempt to disassemble the controller for any reason. Repair must be done by authorized service personnel only. Locate the desk / table on level solid flooring. Do not locate or operate the system where it is humid, dusty, poorly ventilated, exposed to vibrations or exposed to extreme temperature changes. Locate the desk / table at least 50 mm (2 inches) away from any walls, from under any cabinet, or anything that can interfere with the movement of the desk/table. Do not use outdoors. Make certain all cables and power cords are able to move freely and do not become stretched or pinched during full movement of the desk / table. Do not insert anything into the controller as that may create a risk of fire or electric shock. Close supervision is necessary when any electrically powered device is used near children. Ensure that desk / table loads are evenly distributed, and that load specifications are not exceeded. Make sure frequency of use does not exceed the specified duty cycle. Be certain to connect the power cord to a power outlet that meets specified voltage and current requirements. When the unit is plugged in, it is on and fully functional. For complete electrical disconnection, pull out the main plug. Do not use the desk / table to lift, move or support people. To prevent overheating, be certain the controller and motors are not covered. Do not disconnect the switch or motors from the controller while the system is connected to power. General Information about Table Lift Components The controller, motors, cables and switch do not require regular maintenance. Most service issues that may arise can be addressed by the customer with the help of the "Trouble Shooting Guide" (see appendix B). Motion of the table is achieved with motors attached to a power screw. The rotating screw is supported by a power nut fixed within a support tube in the lower section of the table assembly. A loss of power during the operation of the table will have no impact on its operation once power has been restored. If one of the switches, motors or cables fails, or if the connections between these components become disengaged, the table will not move up or down. The table assembly does not have any limit switches. The table position is recorded in the controller by counting pulses emitted by sensors in the motor. Resetting the controller resets the counters in the controller. 2

3 General Information about Table Lift Components - continued Conditions for which the controller will stop during normal operation are: Current Limit - when the current delivered to the motor exceeds a specific limit. Overheating - when the table is cycled up and down repeatedly and exceeds its duty cycle. Timeout - when the controller detects that the motor is not moving at the programmed speed. When the conditions which caused the controller to stop no longer exist, the controller will resume normal operation. The controls and motors constantly exchange information about table position. If a table is disassembled and components (motors or controls) from another table are used to assemble a new table, the new assembly will require resetting. What is Resetting? Resetting a controller will bring the controller to a state that it was during initial manufacture of the table assembly. A controller that has been reset expects the table to be in its lowest position (against hard stops at the bottom of the table stroke). Field Service is Required for the Following: Faulty Motor / Cable Faulty Controller Faulty Switch Loose Power Nut Components Necessary for Field Service: Test Controllers (with the correct program) Test Motors/Cables Test Switches Voltmeter Screwdrivers Power Nut Assembly (the correct pitch and stroke) How to Reset a Controller: A controller may be reset in one of two ways: When connected to motors - Push and hold the "Down" button until the table moves downward to its lowest position. Continue to hold the button (for approximately 5 seconds) until the table resumes downward travel, stops and a double click is heard from the controller. When not connected to motors - Press and hold the "Down" button until a double click is heard from the controller. It is not possible to reset a controller connected to motors that do not reach a mechanical stop. 3

4 Glossary Double Clicking - the sound of relays opening and closing within the controller. Duty Cycle - a ratio of "on time" to "off time" of a system that will prevent overheating of the electronics. Mechanical Stop - a condition in which motor rotation is prevented. Table Controller - the controller attached the table being serviced. Test Controller - a functional controller that is in the possession of the field service representative. Table Motors/Cables - the motor/cable assemblies attached the table being serviced Test Motors/Cables- functional motor/cable assemblies that are in the possession of the field service representative. Table Switch - the switch attached the table being serviced Test Switch - a functional switch that is in the possession of the field service representative Sequence of Steps for Table Service: Ensure that all of the appropriate steps in the "Trouble Shooting Guide" (see Appendix B) have been taken. If the table is not moving, go to step 1, otherwise go to step Check Primary Controller Function b. Unplug table controller from power receptacle. c. Plug table controller back into power receptacle. d. Check for a double clicking sound from the table controller. e. If the table controller double clicks proceed to step 2, if there is no double clicking sound, proceed to step Check Switch Function b. Replace table switch with test switch. c. Plug table controller back into power receptacle. d. Check operation by pressing "up" and "down" buttons. If operation is normal repair is complete. If table still does not move, replace test switch with table switch repeating the steps in this section (Check Switch Function). 3. Check Motors / Cables Function b. Unplug table motors / cables at table controller. c. Plug in table controller back into power receptacle. d. Reset table controller by pressing down button until double click is heard. e. Unplug table controller from power receptacle. f. Plug in test motors / cables to table controller. g. Plug in table controller back into power receptacle. 4

5 h. Check operation of test motors / cables. While pressing the "up" or "down" button, the test motors should rotate simultaneously and stop when the limit of travel has been achieved. If test motors operate in sync, then table motors / cables must be replaced - go to step 3. I. If test motors do not operate in sync, then go to step 4. To replace table motors / cables with test motors / cables. i. Unplug table controller from power receptacle. j. Remove table top. k. Remove motors / cables by unscrewing Phillips screw and pulling upward. l. Remove table motors from mounting bracket and replace with test motors. m. Reassemble motor and mounting bracket to table assembly and attach Phillips screw. n. Replace table top. o. Plug in table controller back into power receptacle. p. Reset table controller by pressing down button until double click is heard. q. Unplug table controller from power receptacle. r. Plug in test motors / cables to table controller. s. Plug in table controller back into power receptacle. t. Reset table controller by pressing down button until motors move completely downward and stop by contact with mechanical stop. Normal operation may now resume. 4. Check Complete Controller Function b. Unplug table motors / cables at table controller. c. Plug in test controller into power receptacle. d. Reset test controller by pressing down button until double click is heard. e. Plug in table motors/cables to test controller. f. Reset test controller again with table motors / cables by pressing down button until motors move completely downward and stop by contact with mechanical stop. g. Check operation. If operation is normal, repair is complete. Steps 5 and above are for table which is moving unevenly. 5. Check Power Nut Function b. Unplug table motors / cables at table controller. c. Plug table controller back into power receptacle. d. Reset table controller by pressing down button until double click is heard. e. Unplug table controller from power receptacle. f. Plug in table motors/cables to table controller. g. Plug table controller back into power receptacle. h. Reset table controller again by pressing down button until motors move completely downward and stop by contact with mechanical stop. If one or both motors continue operate and do not encounter a mechanical stop, the power nut assembly must be replaced - go to step Replacing Power Nut Assembly b. Unplug table motors / cables at table controller. c. Plug table controller back into power receptacle. d. Reset table controller by pressing down button until double click is heard. e. Unplug table controller from power receptacle. 5

6 f. Remove table top. g. Remove motor that continued to rotate during in step 5h, by unscrewing Phillips screw and pulling upward. h. Remove upper portion of leg by pulling upward. i. Remove screws from lower portion of leg that secure power nut assembly. j. Remove power nut assembly from lower portion of leg. k. Replace with new power nut assembly and secure with screws previously removed. l. Ensure that power screw is rotated to the downward most position. m. Replace upper portion of leg. Reattach motor and Phillips screw. n. Reattach table top. o. Plug in table motors/cables to table controller. p. Plug in table controller into power receptacle. q. Reset table controller again with new power nut by pressing "down" button until motors move completely downward and stop by contact with mechanical stop. Repair is complete. 6

7 Appendix A RATINGS 1 and 2 - Leg Controller Low Load Input VAC/60Hz/2A Low Load Output... 24VDC/9A Low Load Duty Cycle sec on/ 270 sec off High Load Input VAC/60Hz/2A High Load Output... 24VDC/14A High Load Duty Cycle sec on/ 720 sec off Nominal power VA Operating voltage (secondary)... 29VAC Operating voltage (electronic)...5vdc Switching capacity per Output...24VDC/7A max Switching capacity all... 24VDC/9A Switching time at maximum power...10%/30s max Ambient temperature C Protection class...i I Weight kg Connector socket for drive... 8-pin DIN socket Connector socket for handset... 7-pin DIN socket 3 and 4 - Leg Controller Low Load Input VAC/60Hz/2.8A Low Load Output... 24VDC/4x3A Low Load Duty Cycle sec on/ 270 sec off High Load Input VAC/60Hz/3.2A High Load Output... 24VDC/4x5.25A High Load Duty Cycle sec on/ 720 sec off Nominal power VA Operating voltage (secondary)... 29VAC Operating voltage (electronic)...5vdc Switching capacity per Output...24VDC/7A max Switching capacity all... 24VDC/12A or 18VDC/16A Switching time at maximum power...10%/30s max Ambient temperature C Protection type / Protection class... I I Weight kg Connector socket for drive... 8-pin DIN socket Connector socket for handset... 7-pin DIN socket Basic Switch Operating Voltage...5V Ambient temperature C Protection type / Protection class...i P-32 Weight kg Connector... 7-pin DIN plug 7

8 Appendix A RATINGS - continued Display Switch Operating Voltage...5V Ambient temperature C Protection type / Protection class...i P-32 Weight kg Connector... 7-pin DIN plug Motor Nominal Operating Voltage... 24VDC Temperature to 60 C Protection type / Protection class...i P-30 Weight kg Connector...AMP RFI Suppression...yes No Load Current... ~ 3. 0 A No Load Speed rpm Duty Cycle... 10% Motor Encoder Input Voltage Range V to 18 VDC Temperature to 85 C Output...Open Collector Current from Output Signal...Isource 400μA Output Voltage... UoutL 1.5V 8

9 Appendix B TROUBLE SHOOTING GUIDE Repair and Replacement Instructions Symptom Reason Corrective Measure Desk/Table is not operating as expected Desk/Table requires resetting To reset: 1. Unplug the black power cable 2. Unplug the tan motor calbes (labeled M1, M2) from the controller, keeping the blue plug (labeled HS) connected 3. Reconnect the power cable 4. Press and hold the down button on the switch for approximately 15 seconds; a double click should be heard immediately, followed by a second double click approximately 7-10 seconds later 5. Release the down button 6. Plug all tan cables back into the motor ports (labeled M1, M2) on the controller (note: order does not matter) 7. Press and hold the down button; the system will move up approximately 3mm 8. Release the down button 9. Press and hold the down button a final time; after 5-10 seconds, the desk/table should creep down slowly. Continue holding the down button until the motors have shut off Desk / Table does not move up or down Desk / Table stopped during operation and does not move up or down Desk / Table legs move unevenly Desk / Table is not level relative to floor Desk / Table makes excessive noise at top or bottom of range of travel Control not plugged in Motors not connected to controller Switch not connected to controller Insufficient plug contact "Duty Cycle" exceeded Display Switch shows "hot" Motors or switch were disconnected from controller after installation Desk / Table requires resetting Desk / Table requires resetting System should now be fully operational. Connect power cable to power source Disconnect power, plug in motor cables, reconnect power Disconnect power, plug in switch cable, reconnect power Disconnect power, reconnect motor and switch cables, reconnect power Allow about minutes to cool and resume normal operation Contact Authorized Service Representative Refer to Reset Directions Refer to Reset Directions 9