User`s Manual - Newport Corporation
Contents
1. After initial setup and filling the isolators consume air only when the leveling valves adjust the pressure to compensate for changes in the load on the table Bottled nitrogen or mechanically compressed air may be used The required pressure is determined by dividing the total load including table weight by the total isolator diaphragm area 9 5 in per isolator plus 5 10 psig For example if the table plus load 1s 2850 pounds and will be mounted on 4 isolators the required pressure is 1850 lbs 4 9 5 in 10 psig 59 psig Note that the maximum operating pressure for the system is 90 psig 6 3 kg cm The Newport Model ACWS ACGP air compressor is an extremely quiet source of clean pressure regulated air If another compressor or plant air is used the Newport model ARF Air Regulator Filter should be used to ensure maintenance free operation These filters prevent water and dirt from getting into the leveling valves and causing the valves to fail due to clogging The supply should include a shut off valve so that the air may be shut off during maintenance or extensive setup when the load is changed drastically CAUTION Bottled carbon dioxide CO2 is not recommended since icing can occur during rapid filling of the isolators 1 7 Warranty Information Warranty information may be found on the page preceding the Table of Contents in this manual Should it become necessary to exercise the watranty contact your2. Newport representative to determine the proper course of action Newport Corporation maintains offices throughout the United States and other locations worldwide Refer to the back cover of this manual for the addresses and telephone numbers of these offices 2 Section 2 Unpacking and Assembly 2 1 Unpacking and Inspecting Unpack the SmartTable OTS leg assemblies the cross braces and all of the hardware Inspect all of the parts for shipping damage There are 2 different versions of the OTS system rigid and isolated The parts shipped with your SmartTable OTS vibration Isolation system are shown below Isolated I Version Rigid N version ipti OTS cross 3 braces 2 OTS cross 3 braces 2 braces and leg leg braces and leg leg weldments weldments weldments weldments 1 1 8 open end Z frame leveling wrench 4 Safelock clips 12 sets and mounting screws regulator and Isolator leveling mounting wrench bracket Hex head VY translucent 40 feet air line tubing Black flat ack fla 7 16 wrench Safelock clips 12 sets and mounting screws Bubble level 24 14 20 7 16 Hex 1799 Tee connector 3 4 locking washer head screws 3 8 wrench Black flat 24 washer Isolated I Version Continue Y locking washer 7 16 wrench Bubble level 10 mounting clips 1 1 1 8 open end frame leveling wrench Black hole plugs Y Black AO feet tubing 14 NPT male tubing adaptor MS x 0 8 6 36
3. OTS system cccceeeeeeeees 21 Figure 18 Leveling wrenches used for leveling the OTS rigid system 21 Figure 19 Illustration showing positioning of leveling wrenches used for le Velie The OTS reid Sy Ste iia cen dderceai ouster A 21 Figure 20 Satelock clip attachment ssin toccatsutces vasisivasduselededecssaphateeseunwaeds 22 Figure 21 Close up of OTS isolator floating seeneeeeeeesseesssssssssseeeeereresees 23 Figure 22 System stability dia raone eea ini eanicheece hah stepiaiuteieriats 26 Section 1 General information 1 1 Introduction The Newport SmartTable OTS Vibration Isolation Workstation provides an ideal working platform for vibration influenced devices such as interferometers microscopes and balances Sensitive instruments such as these will show significant improvements in resolution and repeatability when isolated from floor motion by the OTS pneumatic suspension system Special care was taken to ensure excellent performance in the 10 50 Hz floor vibration frequency range corresponding to dominant ambient vibration frequencies common to multi floor buildings The OTS pneumatic isolators provide excellent protection against both vertical and horizontal floor motions These workstations integrate Newport s rigid laminated honeycomb panel SmartTable technology and pneumatic isolation systems to provide a mounting platform which is rigid yet thin and lightweight The system accommodat
4. pressure leak tested prior to shipment Check all tubing connections for leaks with soapy water Tubing that is crushed out of round or that is not cut squarely may not seal in the push in fittings Use a single edge razor blade to cut the tubing cleanly If testing with soapy water indicates that either the isolator or valve are leaking contact Newport Customer Service 30 5 1 Section 5 Factory Service Obtaining Factory Service To obtain information concerning factory service contact Newport Corporation or your Newport representative Please have the following information available 1 Model number 2 Purchase order number 3 Complete description of the problem If components are to be returned to Newport Corporation you will be given a Return Number which you should reference in your shipping documents Please fill out the service form located on the next page and have the information ready when contacting Newport Corporation Include the completed service form with any parts or components that are returned 31 Service Form Vibration Control Products Name RETURN AUTHORIZATION Company Please obtain prior to return of item Address Country Date P O Number Phone Number Item s Being Returned Model Serial or manufacturing date Description Reason for return of goods please list any specific problems Please Describe the Problem Attach additional sheets as necessary Where is the Equipme
5. 6 wrench to tighten the bolts to a torque of 6 ft lbs Figure 5 Tightening the cross brace bolts to the leg weldment 14 CAUTION Do not over tighten The bolts can be stripped if excessive force is used Tighten to a torque of 6 ft lbs After all the cross braces are tightened place bubble level on both sides of the frame and adjust the leveling feet as needed see Figure 6 and Figure 14 Figure 6 Completed OTS frame assembly 2 2 1 Installing Leveling Valves If your frame is the non isolated N version you do not have leveling valves Please skip this section of the assembly instructions Go to section 2 If your OTS system is the isolated version I three leveling valves will need to be mounted to the cross braces Note that only three leveling valves are needed since three points define a plane The diagram in Figure 7shows the location for the leveling valves Figure 7 Leveling valve location 15 Two sets of holes have been pre drilled and tapped in the frame cross braces One set has been drilled in the leg weldment Attach brackets using 3 8 wrench first Attach the leveling valves to the bracket and use a 4mm allen wrench to tighten the M 5 socket head cap screws that came with the leveling valves See figure 7 for valve location Mounted leveling valve to frame using mounting bracket provided Use the rectangular nut plate and socket head leveling valve to bracket Figure amp Maste
6. LANES sees vescatcia ress as 16 2 3 Squaring and Leveling the OTS Frame ce ececccccceeeeeeeeeees 18 2 3 1 Leveling the OTS frame for the rigid N and isolated VESLO ol D mC ee ee ne OOO oe nna Pe ee 18 24A Instans tne TAD e a 19 2 Leveling the table on the frame nieres 20 2 5 1 Leveling the Table on the Rigid non isolated N version OT Me OTRS o yS Eie es ren seontade aceasta 20 2 5 2 Leveling the Table on the Rigid isolated I version of fie TSS VSleMlactet catiscivetnaattue ena eae nanis 22 20 Froan the WANG scree seccctenscnies e atest asc naaenealeotabs 22 2 7 Adjusting Leveling Valve Sensors cccccccsssseseseeeeeeeeeeeeeeees 23 3 Section 3 Operation 25 Sol PRANEIPIES OF OperdUoieesn te cacauch eerie arte nen a esceereaas 25 32 Performance Adjustments crre mesilate 29 3 2 1 Stabilizing high center of mass loads eee 29 3 2 2 Improving leveling response times 6 3 2 3 Table loads and or load positions change 33 Mamtenante a oar aa ewe A Jod LIENS o tas xacneoueiustalst IDA APOGI enaa a Section 4 Troubleshooting al Syste Does NOt Float scccs an a O 4 2 Poor Isolation Performance cccccccsessseeeeeeeeeeeeeees AD SV SUCHIN OSCE Sa sto auhancoesnetbu lalate nome bulile didanweanett 4 4 System Leaks Air Constantly 0 0 0 0 cccccccsssseseeeeeeeeeeees Section 5 Factory Service 5 1 Obtaining Factory Service oo eeeeecssececcceeee
7. R A PARTICULAR USE NEWPORT CORPORATION SHALL NOT BE LIABLE FOR ANY INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE PURCHASE OR USE OF ITS PRODUCTS First printing 2009 2014 by Newport Corporation Irvine CA All rights reserved No part of this manual may be reproduced or copied without the prior written approval of Newport Corporation This manual has been provided for information only and product specifications are subject to change without notice Any change will be reflected in future printings Newport Corporation 1791 Deere Avenue Irvine CA 92606 USA Part No 90026760 Rev C Table of Contents Wan ANN hhc hurd a arts gases martinis E S ll Table OF COMUCIUS wicactsiedisneat mes case eat ek tga seat sane S 1 listoi PU CS oean a a V Section 1 General information 6 HM mMiroductoieanss tec omnish ten eee tare ae 6 L ASU MO SUA be dena i eauk tacked ivan tutt tae tae genet 6 L3 Unpackns and MNMSpecloNeaise enen 7 L4 Satety Considerations sanere fines E E E 7 LO Syte PAC MED ei heehee elec etn annld 7 LO lt A Supply RegUre meN Senan a 8 Let Waranty TifOrnia ti oN euen 8 2 Section 2 Unpacking and Assembly 9 ZA Unpacking and Nspectins sicicucte levee sies catia eesetaitiosnstaaecies 9 2rd AD TS Frame SSSI y earn 10 2 2 1 Installing Leveling Valves ccccccccccccssssssseeeeeeeeeenens 14 2 2 2 Installing the Air Filter Regulator ARP 0 00 15 229 COMMECHNG Ait
8. SmartTable OTS C MAAT tame LT sy User s Manual A Newport Experience Solutions Warranty Newport Corporation warrants that this product will be free from defects in material and workmanship and will comply with Newport s published specifications at the time of sale for a period of one year from date of shipment If found to be defective during the warranty period the product will either be repaired or replaced at Newport s option To exercise this warranty write or call your local Newport office or representative or contact Newport headquarters in Irvine California You will be given prompt assistance and return instructions Send the product freight prepaid to the indicated service facility Repairs will be made and the instrument returned freight prepaid Repaired products are warranted for the remainder of the original warranty period or 90 days whichever first occurs Limitation of Warranty The above warranties do not apply to products which have been repaired or modified without Newport s written approval or products subjected to unusual physical thermal or electrical stress improper installation misuse abuse accident or negligence in use storage transportation or handling This watranty also does not apply to fuses batteries or damage from battery leakage THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FO
9. eeeseeeeeees Service Form List of Figures Figure 1 OTS leg weldment with shipping bracket being removed 1 Figure 2 OTS leg weldments and cross brace positioning c 0e0008 11 Figure 3 Leveling valve mounting holes located on the cross brace should be positioned inward and facing upward toward the top of the Tele a Er E A AE E E E A T E ATA A T E eee 12 Figure 4 Connecting cross braces to OTS leg weldments 006 13 Figure 5 Tightening the cross brace bolts to the leg weldment 13 Figure 6 Completed OTS frame assembly ec cccccccccnnnntteeeeeeeeeeeees 14 Fere se veline Valve 1OCAUON eeen is iudebicheeceltaa en ieteriats 14 Figure 8 Master Leveling valve installed on cross brace 0000000e 15 Figure 9 Location of Master slave Valve ccccccccccccecceeeeeeeeeeeeeeeeeeeeeeees 15 Figure 10 Air regulator filter ARF being installed on leg weldment 16 Figure 11 Pneumatic plumbing diagram for isolated version OTS system 17 Figure 12 Tubing connection for Master isolator cceeeeeeeeeeeeeeeeeees 17 Figure 13 Tubing connection for master slave 1solator cccsssseeeeeeeeeeees 18 Fiure 14 Leveling the OTS Traine siene a 19 Figure 15 Close up of leveling feet used to level the OTS frame 19 Figure 16 Mounting hole pattern for attaching table to isolator 20 Figure 17 Jack screw used to level the rigid
10. eling feet are in contact with the floor use the Safelock clips and clip bolts to attach the table support to the table see Figure 20 The opposite end of the spanner wrench used to adjust the jack screw can be used to tighten these bolts Floating the Table 1 Close the metering needle valve Figure 12 on each isolator then open it turn 2 Turn on the air supply and adjust the regulator for the pressure calculated using the formula given in Section 1 6 This pressure must not exceed 90 psig 6 3 kg cmz 3 Check all connections for leaks Correct or repair any leaks before proceeding If the table does not float within several minutes increase 23 the air pressure until the table floats or adjust the valve height sensors to hold the control arms further down Confirm that the needle valves are open turn per isolator supplied NOTE If the table oscillates after it floats decrease the air pressure or close the needle valves slightly In clean room applications the EXH exhaust port on the valves may be connected to the clean room vacuum system to capture the valve exhaust NOTE Exhaust must be routed to a vacuum system Backpressure in the tubing will cause the exhaust air to leak from the valve Payload support plate Ya gap Top of protection piece Figure 21 Close up of OTS isolator floating 2 7 Adjusting Leveling Valve Sensors I After the system floats check the position of the payload support plate
11. ersonal injury With the OTS frame assembled and leveled as described in Section 2 2 raise the table and position it above the OTS frame Be sure the frame is correctly positioned relative to the attachment holes provided in the bottom of the table See Figure 16 20 2 5 2 5 1 ae Table Bottom Isolator Clamp Hex Head bolt i at 3 per Isolator Hole pattern on bottom of table for attaching Safelock clips Figure 16 Mounting hole pattern for attaching table to isolator CAUTION When lowering the payload on to the isolators do not allow the payload to shift sideways Doing so could damage the isolators Position the table so the bolt hole patterns line up over each isolator see Figure 16 Slowly lower the table to within 1 2 of the OTS frame Slight adjustment of the OTS frame positioning may be necessary in order to achieve proper alignment for the isolator and bolt hole pattern on the bottom of the table Leveling the table on the frame Leveling the Table on the Rigid non isolated N version of the OTS System Adjust the four leveling jack screws Figure 17 Figure 19 using the spanner wrench Figure 18 until the table top contacts evenly on all four of table supports and does not rock when pressed down on at any of the four corners Make sure all 4 isolator leveling feet are still in contact with floor The isolated I version of the OTS does not have or require this adjustme
12. es high center of gravity loads with exceptional stability Equipped with casters the system is easy to move without heavy equipment It is possible to tailor the system to a wide variety of applications using the range of sizes and the many optional storage and safety accessories 1 2 Getting Started Please read this instruction manual thoroughly before assembling the isolation system The individual components have been assembled at the factory and require only final system assembly and performance adjustment You can find demo set up videos on Newport s YouTube Channel Search SmartTable OTS Demo on YouTube to start or scan the QR code below 1 3 Unpacking and Inspection The components of your Newport Vibration Control System are packed in individual labeled boxes Carefully inspect all components for shipping damage Report any shipping damage immediately to Newport and the shipping company 1 4 Safety Considerations The following terms are used in this manual that relate to your safety WARNING Warning is used to indicate dangers that could result in personal injury CAUTION Caution is used to indicate situations that may result in damage to components of your Newport Vibration Control System 1 5 System Placement To ensure optimal performance from your OTS Vibration Isolation System it should be located on a level surface Uneven floors or mounting surfaces may cause difficulty if their irregularit
13. for all isolators see Figure 21 The gap between the bottom of payload support plate and the top of the protection rubber piece should be about Adjust the control arm adjustment screw of each valve Figure 12 as required to obtain this gap When all isolators are adjusted re check the level of the payload NOTE this step should require only minor adjustments Do not move the small set screw near the pivot of the valve control arm Verify that the table is freely floating on the isolators Move the table gently from side to side about 1 8 inch You should not encounter any resistance Re check by moving the table up and down the same amount Again there should be no restriction of movement Push one corner of the table down approximately 1 8 and release it The table should return to the original position within less than 4 seconds Response time may be adjusted as described in Section 3 2 2 24 If the table rocks back and forth oscillates vertically without settling down close all of the needle valve adjustment screws Then re open the screw by 1 8 to 4 turn In each corner of the table gently push down on the table top The table should lower and then return to its starting position Gently push up from the bottom of the table The table should slightly rise then return to its original position If the table does not move freely either up or down adjust the height adjustment screws in the leveling valves until the table moves free
14. ly 25 3 section 3 Operation 3 1 Principles of Operation Newport Isolators provide one of the best methods of vibration isolation for critical applications The system operates on the principle of air pistons which are equivalent of soft springs The main advantage of the Newport system over other designs are low vertical resonant frequency with low amplification at resonance Q and a Pendulum horizontal decoupling system for effective isolation from low amplitude vibration The leveling valves provided with the system control the height of the table to within 0 01 inch 0 3mm accuracy This tolerance is adequate for most applications More accurate valves are available for specialized applications 3 2 Performance Adjustments Once the system is assembled and floating it is possible to make minor adjustments to suit your individual needs These adjustments involve the system air pressure the control arms and needle valves WARNING Once the system is floating keep fingers away from the area between the support plate and the top of the isolators Any object between these points may be caught if the load or air supply changes Personal injury may result 3 2 1 Stabilizing high center of mass loads If your load has a high center of mass or if the load is particularly heavy the system may oscillate In this case lower the air pressure or close the needle valves slightly This may improve stability and reduce the
15. mm SHCS 2 10mm 2 2 OTS Frame Assembly The SmartTable OTS leg assemblies are shipped bolted together via two shipping brackets These brackets keep the OTS leg assemblies upright during shipping Remove the two shipping brackets using the 7 16 wrench included with your OTS system Each bracket has 4 bolts that must be removed 11 Figure 1 OTS leg weldment with shipping bracket being removed Figure 2 OTS leg weldments and cross brace positioning Roughly position the OTS leg assemblies The distance between the assemblies should be about the length of the cross braces Cross brace length is roughly 5 7 9 feet depending on the size of your system WARNING Two people will be required to safely assemble the OTS frame The cross brace used on top 2 pcs each has 2 holes drilled in it These holes are used to mount the leveling valve brackets and should be positioned inward The cross brace used on bottom 1 pc has multiple 8 32 holes 12 drilled in it for users to mount accessories and should be facing upward see Error Reference source not found Figure 3 Leveling valve mounting holes located on the cross brace should be positioned inward and facing upward toward the top of the frame 13 Figure 4 Connecting cross braces to OTS leg weldments Bolt the cross braces one at a time to the OTS frame assembly using the 1 4 bolts washers and lock washers provided with the OTS frame Use the 7 1
16. nnected properly and the supply pressure is adequate see step A Refer to Figures 10 11 and 12 Be sure that the needle valves are not closed completely Check each leveling valve for clogging To do this press the control arm down Air should flow into the isolator accompanied by the familiar sound of moving air Repair or replace any clogged valve Use the ARF filter regulator to prevent this situation 4 2 Poor Isolation Performance The following may lead to poor isolation performance of your system l Vibration may be transmitted to the table through direct physical contact of equipment with external sources of vibration including cables Isolators that float too high too low or are not centered may conduct floor vibration to the table top Centered isolators will remain centered unless the payload and isolators are moved relative to each other Equipment on the payload may be vibrating at a resonant frequency of other components Improve the rigidity of the mounting for that equipment or remove that item from the system Air currents or pressure fluctuations may be disturbing components on the payload 29 4 3 System Oscillates If the system oscillates or hunts you may have a set up with a high center of mass Refer to the information in Section 3 2 1 or consult your Newport representative or Newport Corporation for further assistance 4 4 System Leaks Air Constantly All Newport isolators and valves are
17. nt Use the Safelock clips and clip bolts to attach the table support to the table see Figure 20 The opposite end of the spanner wrench used to adjust the jack screw can be used to tighten these bolts 21 Figure 17 Jack screw used to level the rigid OTS system Support egr Clamp gt d D Bolts ed Level Adjustment Hex Nut Support Plate Spanner Wrench gt I Ss gg SS SSE Figure 18 Leveling wrenches used for leveling the OTS rigid system a U pm o Bot amp Clamp AT Ti Support Plate TT T Wrenches Figure 19 Illustration showing positioning of leveling wrenches used for leveling the OTS rigid system 22 2 5 2 2 6 Figure 20 Safelock clip attachment Leveling the Table on the Rigid isolated l version of the OTS System Make sure the table is resting on all four table support plates and does not rock when pressed down on at any of the four corners If this 1s the case attach the Safelock clips as described in section 2 6 2 Figure 20 Make sure all 4 isolator leveling feet are still in contact with floor If the table is not in contact with all four support plates and rocks adjust the appropriate leveling foot for isolated I version or jack screws of the supporting plate for rigid version N until the table support is in contact with the bottom of the table Once all four support plates are in contact with the bottom of the table and all four lev
18. nt Installed factory controlled laboratory out of doors etc Maximum Air Pressure available Regulated Yes No Any additional information If special modifications have been made by the user please describe below 32
19. oscillation or hunting A rule of thumb for determining high center of gravity C G system stability is shown in Figure 22 If the combined center of gravity of the payload is within the stable region the system will be stable If the combined C G is inside the may be stable region the system may be stable If the combined C G is outside both regions the system will probably be unstable 26 3 2 2 3 2 3 3 3 3 3 1 May Be Stable Region Stable Region _ Figure 22 System stability diagram Improving leveling response times If the system is stable the re leveling response time may be decreased by increasing the system pressure In addition the needle valves may be opened until the system oscillates and then closed slightly This is desirable if components are moving over the surface of the table For systems where the loads are seldom changed slower re leveling may be beneficial This 1s accomplished by closing the needle valves slightly and or decreasing the system pressure Needle valves should be opened the same amount for each master isolator that they supply for the master slave side valve the needle valves should be opened twice the amount to supply air to both isolators on that side Table loads and or load positions change If the loads are moving or changing significantly the control arms may require adjustment Each time the load is changed check the relationship of the su
20. pport plate to the top of each isolator If the desired 14 inch is not maintained adjust the overall system pressure and or the sensor positions Maintenance Newport Isolation Systems require little maintenance No periodic maintenance is required Cleaning Newport isolators are painted powder coated or zinc plated steel This coated material is relatively corrosion resistant It may be cleaned by applying non abrasive liquid household cleaner to a rag and wiping the isolator Avoid abrasive cleaners 3 3 2 2 Air Quality Oil water or debris in the air supply may contaminate the leveling valves or isolator damping system and degrade performance Use of the Newport model ARF Air Regulator and Filter in the air supply will prevent this occurrence The filter does require occasional cleaning Drain your air compressor frequently to make sure that moisture trapped inside is drained Please refer to your air compressor manual for detailed instructions 28 4 Section 4 Troubleshooting 4 1 System Does Not Float Use the following procedure if the system does not float when pressure is applied to the isolators l Ensure that the supply pressure is 5 10 psig 0 4 0 7 kg cm2 above the pressure reading of any of the leveling valves If the load is increased the pressure should be increased to maintain the difference between supply and valve pressure Refer to Section 1 6 Check to see if all air lines are co
21. r Leveling valve installed on cross brace Top of the leveling valve mounted about 1 8 from bottom of the tabletop after it is installed Figure 9 Location of Master slave valve 2 2 2 Installing the Air Filter Regulator ARF 2 2 3 Figure 10 Air regulator filter ARF being installed on leg weldment Attach the ARF air regulator to the mounting bracket Attach the mounting bracket to the OTS leg assembly Figure 7 and Figure 10 Use the 4mm allen wrench to tighten the two M 5 socket head cap screws Connecting Air Lines The IPV leveling valve is shown in Figure 12 Three valves are used in all systems as only three points are required to determine a plane The leveling valve locations are selected such that they form the largest triangle possible under the table The larger the triangle the more stable the system will be When two or more isolators are controlled by the same valve they act as a single large isolator supporting the table at the center of force of the several isolators The floating height of the system is determined at the valve position Connect air lines to the isolators as shown in Figure 11 Figure 12 and Figure 13 When cutting tubing be sure the ends are round and cut squarely This is best done with a single edge razor blade scissors will deform the tubing causing leaks The connections are detailed in Figures 11 12 and 13 Use translucent tubing to connect the air supply to the ARF Be sure
22. the connections are firm by tugging on the tube 17 Isolator 4 corners Figure 11 Pneumatic plumbing diagram for isolated version OTS system Sensor Table Bottom Control Arm Leveling Valve Control Arm Adjustment CON Air Supply Line OTS Frame Metering Needle Valve Black Tubing Attachment Screws Barb Fitting Figure 12 Tubing connection for Master isolator Leveling Valve Table Bottom Air Supply Line Tee fitting Elbow fitting Grey Tubing Elbow fitting on isolator on isolator Figure 13 Tubing connection for master slave isolator 2 3 Squaring and Leveling the OTS Frame 2 3 1 Leveling the OTS frame for the rigid N and isolated versions l Place the bubble level on the OTS frame as shown in Figure 14 The level measures if the frame is level in the X Y plane Use the 1 open end wrenches provided to adjust the four leveling feet until the frame is level Figure 15 One wrench is used to hold the lock nut while the other is used to rotate the bolt This will either raise or lower the table depending on the direction the bolt is rotated Adjust the leveling feet until the frame is level 2 4 19 Figure 14 Leveling the OTS frame 1 50 nominal R Figure 15 Close up of leveling feet used to level the OTS frame Installing the Table WARNING Payloads are heavy Use a forklift or other appropriate equipment Be sure to use proper lifting procedures to avoid severe p
23. y is outside of the range of the leveling feet The OTS isolators must be mounted so that its axis is not more than 0 5 degrees from vertical This is necessary for the isolator to function properly in the horizontal mode Note 0 5 degrees is equal to 0 05 1 3 mm inches in 6 0 inches which is the isolator base dimension A typical spirit level will easily measure 0 5 degrees and can be used to check the vertical alignment of each isolator If the floor where the isolators are being mounted has a depression of more than 0 05 inches under one side of the base then the floor should be grouted or shimmed level at this location If the system is not located on the ground floor of the building it should be located near primary vertical structures such as exterior walls or support columns By locating the table near these structures the effects of low frequency floor motion will be minimized thus increasing isolator performance It is also advisable to avoid locations adjacent to major sources of vibration from operating machinery such as elevators air conditioning plants or factory equipment WARNING The payload is attached to the isolators with bolts In the event of an earthquake the system may collapse For areas susceptible to earthquakes we recommend that earthquake restraints be installed on each vibration control system 1 6 Air Supply Requirements A constant supply of air must be connected to the isolators during operation
Download Pdf Manuals
Related Search