REAL CHAMBERS CORPORATION CHAMBER USER`S MANUAL
Contents
1. www realchambers com Real Chambers Test Chambers Replacement Parts REPLACEMENT PARTS If any parts are required please call 1 888 292 1552 for pricing and availability The following information provides Real Chambers part numbers to assist in finding the correct part o Valves Valves These devices convert a 4 20mA control loop electrical signal into a regulated gas pressure There are two 2 different valves on the chamber One of the valves is used for the control of the liquid nitrogen This valve is built into the positioner and converts the 4 20mA control loop to regulate the gas pressure to the actuator from 3 15 psig Replacing this valve will require replacement of the proportional valve see Table 9 Chambers that have the optional vibration table use an I P valve to control the vibration This valve converts the 4 20mA control loop and regulates the gas pressure from 0 120 psig The following table identifies these valves Table 4 I P Valves P N Liquid Nitrogen 3 15 psig See Table 9 0 120 psig 11809243 Liquid Nitrogen Cooling Solenoid Valve REAL 20 REAL 20T only This valve allows liquid nitrogen to flow into the REAL 20 REAL 20T chamber when it is calling for cooling The valve provides on off control of the liquid nitrogen flow Table 5 Liquid Nitrogen Cooling Solenoid Valve REAL 20 REAL 20T Real Chambers P N LN Cooling Solenoid 10973287 Valve Cooling Safety2. 30 TABLE 19 HAMMER AIR FITTINGS 2 30 TABLE 20 TROUBLESHOOTING TABLE 31 11001199 Rev M www realchambers com Real Chambers Test Chambers Safety Information Safety Information e Your Real Chambers equipment is provided with several safety systems designed to help prevent accidental damage to product and equipment and avoid injury to personnel Always operate this equipment in accordance with the procedures set forth in the OPERATION section of this manual e The safety systems described below should be checked at least once every 30 days and any inoperative or questionable conditions must be corrected before resuming operation e Servicing of this equipment and its associated utility service must be done only by properly trained personnel e Equipment servicing should be done only after shutting off the Main Disconnect Switch and closing all air and nitrogen supply valves and then only in accordance with safe practices See MAINTENANCE section of this manual for more information 7 air liquid nitrogen and high voltages can all cause severe injury or death if not properly handled IYWARNING EXTREME TEMPERATURES AND PRESSURES This equipment produces extreme temperatures and uses pressurized fluids
3. 4 SPECIFICATIONS AND UTILITY 5 5 PERFORMANCES 5 SYSTEM DETAILS EEE EE EEEE a eevee 6 DIMENSIONS AND UTILITIES c0ccccssceccescccscccssceccscceuscccescecuecccacceueseeaucccessceeueceeusecenss 7 8 o TEMPERATURE CONTROL SYSTEM cccccccccssccceccsscececcescececcssecceccesececccstececccsnceeeeauaeess 8 AIR CIRCULATION 00 00 06600000 9 6 52 9 OPTIONAL VIBRATION TABLE AND HAMMERS REAL LINE 9 O OPERATOR CONTROL SWITCHES ccccccccssecccccescececcecceccccsccececceeeceensneceeensneeeeenaneess 9 CTT CONTROLLER 5 11 SYSTEM INSTALLATION cccccccccccccccsccccscecscccssesscscesesesosscecscocssocscesecssssssssssssoseses 13 13 ELECTRICAL POWER 0 0000 2 0 13 COMPRESSED AIR CONNECTION 0 04002000 00000000 13 LIQUID NITROGEN PLUMBING ccccccccescsssseseecccececeeusesseeces
4. 96 2 91 2 cm mounting surface 3 8 16 s s inserts on 3 centers Thermobon insulated surface REAL 36T REAL 48T REAL 36 LN gt Linear Valve Control Direct Atomization in Plenum 66kW Solid State Time Proportional control zero firing crossover Two Full Opening Doors 24x24 window ea 22 x22 view area One set of four 4 springs rated at 250158 113 4 kgs ea Total static load of 1000 155 453 6 kg 36 36 91 4 91 4 cm mounting surface 3 8 16 s s inserts on 4 centers Thermobond insulated surface Heating specifications based on power supply voltage of 480 VAC three phase 11001199 Rev M www realchambers com REAL 48 LN Linear Valve Control Direct Atomization in Plenum 99kW Solid State Time Proportional control zero firing crossover Bi parting Front and Back 147 24 window ea 12 x22 view area One set of four 4 springs rated at 250165 113 4 ea Total static load of 1000 155 453 6 kg 48 487 121 9 121 9 cm mounting surface 3 8 16 s s inserts on 4 centers Thermobond insulated surface Real Chambers Test Chambers Specs and Utility Requirements Table 3 Dimensions and Utilities Dimensions Utilities and Int Bare Chamber Vibe in Position Exterior Chamber Weight Electrical Liquid Nitrogen Comp Air REAL 30T 48 Exhaust
5. Door Interlock Switches Each door is equipped with a sensor which will interrupt the circulation fans heat cool and optional vibration operation when the doors are open These sensors are located on top of each door Don t operate the equipment unless all door interlocks are functioning properly Proper status should be checked during scheduled maintenance NOTE Access ports and plugs are not protected by door interlocks Since they are provided for cables and hoses supporting product under test it will often be necessary to operate the equipment with one or more of these ports open Packing the port with foam or other material rated for anticipated temperature ranges will greatly reduce heat leak and noise levels CAUTION Be certain that no one is directly in front of an open access port before switching on the optional vibration system o Temperature High Low Limit Controller A temperature limit controller is provided as an independent measure of safety against thermal runaway hot or cold which could occur from but not limited to the following Programming error Primary controller failure Thermocouple breakage LN control valve sticking open SSR failure e Blower failure The limit control is wired into the redundant safety devices redundant heat contactor LN safety via the touch screen controller An independent RTD is provided for the limit control and located inside the air plenum To adjust the high temperat
6. Redundant LN safety valve This control system enhances the safety and reliability of the equipment by interlocking critical functions with safe to run input status signals as well as operator function switches For complete documentation on the operation of the CTI controller please refer to the controller manual which was supplied with the chamber I O Panel The control panel comes equipped with an I O panel that includes a connection point for USB serial Ethernet and a convenience outlet 11 11001199 Rev M www realchambers com Real Chambers Test Chambers Features Convenience Outlet The USB port can used for a USB type mouse or other pointing device This device can be used to move a cursor on the touchscreen The serial port was used on older models for serial communication with the chamber The serial port is not currently used and should not have any devices connected to it The Ethernet port be used for communication with a PC that has Real Chambers SCADA software installed Only Ethernet cables should be used in this port The convenience outlet can be used to power test equipment or other low power devices The convenience outlet rating is 2 with a maximum current draw of 12 RPIREAL 11001199 Rev M FALTAS Cre www realchambers com Real Chambers Test Chambers System Installation System Installation NOTE Refer to the Real Chambers Site Prepara
7. REAL20T REAL 20 247 2474 36 61 0 61 0 58 4 m 24 247 247 61 0 61 0 58 4 m 477 x 34 574 x 81 h 119 x 87 75 x 206 cm 9001bs 408kg 460 VAC 3 PH 30 A 3 8 Supply 40 to 50 PSIG 2 1 to 3 4 barg 3 8 supply 80 PSIG 15 CFM 5 5 barg 0 4 m min 12 supply 90 PSIG 50 SCFM 6 2 barg 1 4 m min One 1 4 10 2 port no fans or restrictions 11001199 Rev M REAL 30T REAL 30 36 w 3674 55 h 91 5x 91 5x 140 cm 36 w 3674 38 h 91 5x 91 5x 96 5cm 777 53 5 d 95 57 195 5 136 x 242 5 cm 2 2501bs 1022kg 460 VAC 3 PH 65 1 2 Supply 40 to 50 PSIG 2 1 to 3 4 barg 3 8 supply 80 PSIG 15 CFM 5 5 barg 0 4 34 supply 100 PSIG 70 5 6 8 barg 2 0 m min One 1 67 15 2 port no fans or restrictions REAL 36T REAL 36 427 4274 x 59 107 x107x 150 cm 427 x 42 4 44 107x107x112 cm 82 5574 x98 5 h 209 140 251 cm 3 5001bs 1 497kg 460 VAC 3 PH 100 A 1 Supply 40 to 50 PSIG 2 1 to 3 4 barg 3 8 supply 90 PSIG 15 CFM 5 5 barg 0 4 m min supply 120 PSIG 80 SCFM 8 3 barg 2 3 m min Two 2 6 15 2 ports fans restrictions Can combine to 9 22 9 port www realchambers com REAL 48T REAL 48 50 w 5474 x 64 127 137 2 162 2cm 507 5474
8. 11394893 11394893 11001199 Rev M REAL www realchambers com Real Chambers Test Chambers Drawings Appendix Troubleshooting Before doing any troubleshooting the following items should be verified The problem may be found by checking these items first 1 Ensure 460VAC or 575VAC for Canada power is supplied to chamber and main disconnect is turned on 2 Ensure compressed air supply is connected and there is pressure at the connection point 3 Verify liquid nitrogen supply is connected and working at the chamber NWARNING The chamber control system contains high voltage devices Extreme caution should be used when doing any service or maintenance Service or repair should be done only by trained qualified professionals Failure to follow instructions and use proper safety precautions can cause injury or death The following table should be used to help troubleshoot the test chamber For more technical assistance please call the factory 1 888 292 1552 Table 20 Troubleshooting Table PROBLEM POSSIBLE CAUSE Chamber controller doesn t Main disconnect not on power up Ground fault interrupt tripped Controller circuit breaker tripped Doors won t open close applies Doors not closed far enough prior to turning switch to REAL 48 48T Lights don t turn on 31 5 IREAL 11001199 Rev M SL ines www realchambers com Real Chambers Test Chambers Drawings Appendix Fans don t turn on Doors not c
9. The chamber uses a variety of fuses to help protect the electrical components The substitution of fuses not approved for the application by Real Chambers is extremely dangerous and can cause significant damage to equipment Contact Real Chambers for exact information on replacement parts eee 11001199 Rev M www realchambers com Real Chambers Test Chambers Replacement Parts o Vibration TVC and REAL models only Vibration Hammers The chambers utilize a pneumatic hammer that strikes the bottom of the vibration table to produce the random vibration of the table and product under test There are two different size hammers used across the different chamber sizes The following table gives part numbers for the different sizes Table 15 Replacement Hammers Chamber Used On Real Chambers P N REAL 30 48 REAL 36 48 Accelerometer and Cable The accelerometer measures the acceleration level on the vibration table It sends its signal through the accelerometer cable to the control box for controlling the vibration level of the Device Under Test Table 16 Replacement Accelerometer and Cable Item Connector Real Chambers P N Accelerometer standard temp 10 32 10954300 Accelerometer high temp 10 32 11083198 Accelerometer Cable 10 Feet Long 10 32 to BNC 11065141 with Viton protective boot with Viton protective boot with Viton protective boot Volume Booster The volume booster allows larger quanti
10. controller controls to that level If the system s vibration continues to get louder without settling on 5 Grms push the red E Stop button and examine all connections again 6 Check the oil injection rate if so equipped It should inject a drop of oil at a rate no faster than one drop per 45 seconds If it is injecting faster than that slow it down by turning the little red adjustment dial on the top of the oiling unit so that it injects one drop per 45 seconds Pie ot 7 Refer to CTI manual for detailed information on operating the controller 11001199 Rev M RPIREAL www realchambers com 17 Real Chamber Corporation Test Chambers Optional Vibration System Operation Operation Check chamber functions and your understanding of the system by following these steps with an empty chamber before installing the product to be tested 1 Verify that all utilities are on line before operating equipment Compressed air is required to operate control valves cooling system vibration system and safety solenoids Liquid nitrogen is required for proper cooling Empty or low LN tanks produce a mixture of liquid and vapor which will not properly cool the chamber Proper voltage and phase electrical supply are necessary for full heating capability These are listed in the Specifications section 2 Verify that all Emergency Stop palm buttons are pulled out normal Position 3 Open compressed air service valve and liquid nitrogen supply v
11. front of the chamber open and turning the door switch to the closed position Try starting chamber If proximity switch is working properly the fans should not come on and an Alarm should sound For single door models REAL 20 TVC 4 amp REAL 30 amp REAL 36 turn system on with the doors closed and listen for the fan motor open the door and listen for the fan to stop If the fan does not stop then replace the proximity switch Repeat the procedure on the rear door 7 The seals and gaskets on the doors and ports should be inspected for adequate sealing Remove any foreign materials that may be embedded in the gasket Worn or damaged gasket should be replaced 8 Check all the fasteners on the chamber and tighten if necessary Note that adjustment should only be done when metal is at ambient temperatures 20 C 9 For the vibration system check lubricator if so equipped and add oil if necessary The oil level can be checked via the sight glass on the lubricator housing If oil is required Marvel Mystery Oil Real Chambers part number 11008462 should be used 10 Check lubricator if so equipped for proper oil injection rate Lubricator should drop one drop of oil every 90 seconds when vibration is running Do NOT inject more oil than one drop per 90 seconds 11 Check operation of emergency door open button applies to REAL 48T REAL 48 To do this simply press in the button on the inside of the chamber close the doors and a
12. started over from the beginning 11001199 Rev M RPIREAL www realchambers com 2 Real Chambers Test Chambers Specs and Utility Requirements o Emergency Door Open Button Only available on REAL 48 models The emergency door open button stops all chamber systems fans heat cooling and vibration and opens automated doors It is 2 2 in diameter stainless steel and mounted on the inside of the chamber opposite the plenum If the emergency door open button has been activated the following procedure should be used to return the chamber to operating condition 1 Acknowledge the alarm by pressing the Alarm Silence button 2 Open chamber doors completely open 3 Turn Door Switch to the OPEN position The door switch is located on the control box below the touch screen 4 Pull the Emergency door open button out away from the chamber wall to disengage it Push the chamber doors closed as far as possible Be sure all personnel are clear of doors 7 Turn the door switch to the CLOSE position mergency door button Do not use the Emergency door open button as a service tool This is only a STOP button power is still live to the chamber It is provided as a quick shutdown in the event of an operational emergency This button must be pulled back out for chamber to run 11001199 RPIREAL www realchambers com Real Chambers Test Chambers Specs and Utility Requirements
13. t hesitate to call us with any questions or comments that you may have If after reading through this manual you are not confident in carrying out any task please call Real Chambers Technical Service team at 1 888 292 1552 e This manual is intended for use by Real Chambers Corporation Test Chamber customers It is important to read and understand the information in this manual before installing or operating the chamber system This will result in safer operation longer equipment life and more effective testing This manual pertains to the REAL model chambers Other component manufacturers which provide their own manuals are sent along with the chamber e The Environmental Chamber system offers you the ability to expose your new product to extreme temperatures at very rapid rates of change This has proven to be an extremely effective means of identifying failure prone components and assemblies in the shortest possible time The unique characteristics of Real Chambers Test Chamber systems are of key importance in achieving this effectiveness SAFETY FIRST o During this process you will need e Safety glasses with side shields e Leather working gloves e Cryogenic insulated gloves e Steel toed shoes e Hearing protection o Symbols and statements throughout this text and their meaning PN Text following this symbol needs extra attention NOTE Text in this format is extra information helpful to the situation CAUTION Text in this f
14. well as allow for slight variances in chamber placement More information and hints on the electrical installation are included in the Site Preparation Manual Recommended external fault disconnect device should be rated to 110 of the amperage rating of your chamber Please contact Real Chambers directly to determine your chambers amperage rating NW ARNING Control box contains high voltage Any work done on the chamber with the control box door open should be done by trained personnel only Serious injury or death may result o Compressed Air Connection For size and pressure flow requirements refer to the Specifications section of this manual Before final connection be sure to purge the line to get unwanted debris out of 11001199 Rev M REAL www realchambers com 13 Real Chambers Test Chambers System Installation the system Refer to the Outline amp Dimension O amp D drawings at the end of this manual for location of utility hook ups More information and hints on the compressed air connection are included in the Site Preparation Manual o Liquid Nitrogen Plumbing Along with the electrical power the LN service should come from above for easy access around the chamber Refer to the Specifications section for size and pressure flow information The location is shown on the Outline and Dimension O amp D drawing at the end of this manual We recommend vacuum insulated piping for optimum performance of th
15. 01199 Rev M RPIREAL www realchambers com 16 Real Chambers Test Chambers System Installation 11 Install light bulbs and verify their operation 12 Adjust the high and low Site Air Temperature Alarm Limits to 60 C for high and 0 C for low 13 Turn on the Heat and Cool Events 14 Set chamber set point to 70 C and verify high temperature safety works 15 Set chamber set point to 10 C and verify low temperature safety works 16 Repeat steps 14 17 for Product Temperature Alarm Limits 17 Properly set the Site Temperature Alarm limits 18 Run multiple thermal ramps and measure and record the current draw of each heater 19 Set chamber to ramp from 50 C to 100 and measure and record full chamber current draw while heating Note that the controller must be giving 100 heating output to make an accurate measurement 20 File these values and production traveler in a safe place for future reference 21 If any of the above measured and recorded values appears to not closely match that previously recorded at the factory call the factory for assistance If the chamber has vibration complete the following 1 Ensure the accelerometer is secure to the vibration table e Tighten the accelerometer mounting block to the table e Tighten the accelerometer to the mounting block Ensure the accelerometer cable is attached at both ends Turn the Vibration Event on Enter a 5Grms set point in Manual Mode See that the
16. 26 Real Chambers Test Chambers Replacement Parts Table 11 Replacement RTD Type Real Chambers P N Replacement RTD 3 wire 14812624 Door Guard Switch The door guard switch monitors the status of the doors and inputs into the controller The switches tell the controller if the chamber doors are open or closed If the chamber doors are open the controller will shut down various controller outputs Table 12 Replacement Door Guard Switch Item Real Chambers P N Door Guard Switch 11354921 o Electrical Light Bulb The chambers have halogen lamps inside to allow viewing of the product under test while the test is in process These lights are easily replaced should they burn out Table 13 Replacement Light Bulb Item Properties Real Chambers P N Halogen Bulb 12 Volt 20 Watt 10959063 Heater Solid State Relay SSR The chamber uses time proportional solid state relays to control the heating of the chamber The chamber has one SSR for each heater bank The heater banks are in the air flow plenum while the SSR is mounted in the control box Table 14 Solid State Relay Item Properties Real Chambers P N Time Proportional Solid State 480 VAC 30 Amp 11042767 Relay REAL 20 20T REAL 30 30T Time Proportional Solid State 480 VAC 50 Amp 11035786 Relay REAL 36 36T REAL 48 48T 27 11001199 Rev i REAL www realchambers com Real Chambers Test Chambers Replacement Parts Replacement Fuses
17. 3271 127 137 91 5 98 75 7174 107 249 180 5 272 4 500158 2 041 kg 460 140 1 Supply 40 to 50 PSIG 2 1 to 3 4 barg 3 8 supply 90 PSIG 15 CFM 5 5 barg 0 4 m min supply 120 PSIG 140SCFM 8 3 barg 3 9 m min Two 2 67 15 2 ports fans restrictions Can combine to 9 22 9 port Real Chambers Test Chambers Features Features o Temperature Control System The control of temperature is done by the CTI chamber controller The controller manages various events and thermal PID coefficients to give the thermal response desired in the chamber For specific information pertaining to the controller refer to the controller manual which was supplied with the chamber Heating is accomplished with resistive electric elements while cooling is accomplished by direct injection of liquid nitrogen LN2 Electric heaters are carefully selected and arranged to provide extremely rapid rates of temperature change without exceeding the safe design limits of heat elements Liquid nitrogen is injected using nozzles to quickly vaporize the liquid providing maximum cooling without exposing product under test to liquid nitrogen droplets On the REAL 20 chambers the liquid nitrogen is injected through on off control of solenoid valves Additionally there is a cooling safety valve This solenoid closes if various safety features have tripped This safety valve i
18. Failure to follow instructions and use proper safety precautions can cause injury or death INWARNING ASPHYXIATION HAZARD This equipment uses LIQUID NITROGEN which can displace oxygen and cause severe injury or death due to lack of oxygen ALWAYS allow adequate time for ventilation after opening chamber doors before entering workspace NEVER operate this equipment unless all exhaust ports are securely ducted to outside of building Real Chambers recommends utilizing an oxygen monitor in the vicinity of the chamber to help protect personnel from potentially dangerous conditions CAUTION HIGH SOUND LEVELS The vibration hammers may produce extreme sound levels which may cause temporary or permanent hearing damage particularly after prolonged exposure Do not attempt to operate vibration equipment with chamber or port doors open unless adequate hearing protection is worn by all effected personnel 11001199 Rev M 5 1 REAL www realchambers com Real Chambers Test Chambers Specs and Utility Requirements Description of Safety Features On each unit there are a number of features that help to ensure safe operation These features include o Main Disconnect Switch Located on the door of the operator control console this large black pistol grip switch removes all electrical power to the equipment when placed in the OFF position Note that any power provided directly to product under test inside the equipment may not be disconne
19. MED ON A DAILY 21 o MAINTENANCE TASKS BE PERFORMED ON A MONTHLY 5 21 o MAINTENANCE TASKS BE PERFORMED EVERY THREE 23 o MAINTENANCE TASKS BE PERFORMED ON AN ANNUAL BASIS 23 REPLACEMENT PARTS 2 ccccscscssssssssscscscscssscssscssscscssssssssssssssssssssssssssssssssssssssssseseses 24 0 NAVE 24 O SEN OR 26 E 27 VIBRATION AND REAL MODELS 2 12 1 2 1 1 201240002 6 0000000000000000005 29 TROUBLESHOOTING ccccccscccscccscccccccscccsccccccccsccscccscccecscscecscscccccscccssecsesesssesesesees 31 COMPONENT 2 0000 0 000000000 33 DRA WINGS 650 5044 2201646 2244246222422 42222202212001046204042262206120622441604124 35 11001199 www realchambers com Real Chambers Test Chambers Table of Figures Table of Figures FIGURE 1 LIGHT BULB 54 15 FIGURE 2 FAN ROTATION DIRECTION 16 List of Tables TABLE 1 CHAMBER PERFORMANCE SPECIFICATIONS cccccccececececececececececececec
20. Real Chambers Test Chambers Overview REAL HALT HASS Chambers REAL CHAMBERS CORPORATION CHAMBER USER S MANUAL 11001199 REV Real Chambers Test Chambers Overview Overview o Service The Real Chambers Test Chambers have been designed for years of safe and dependable operation In the event service is required contact the nearest Real Chambers authorized service center or contact Real Chambers at Real Chambers Corporation 10392 E 48 Avenue Denver CO 80238 USA Phone 1 888 292 1552 www realchambers com o Design Modification DO NOT use this product in any manner not consistent with the instructions outlined in this manual NEVER alter the design or perform service that is not consistent with the instructions outlined in this manual without the prior written approval of Real Chambers Any service done without the approval of Real Chambers will result in termination of product warranty o Additional Copies Additional copies of this manual are available by contacting Real Chambers at the address listed above No part of this document may be reproduced or copied in any form or by any means without the prior written permission of Real Chambers Corporation Copyright 2018 Real Chambers Corporation 11001199 Rev M RPIREAL www realchambers com Real Chambers Test Chambers Overview The staff and employees of Real Chambers thank you for choosing our product Please don
21. Solenoid REAL 20 REAL 20T only The REAL 20 REAL20T has a solenoid valve that acts as a liquid nitrogen safety The valve operates when the doors of the chamber are open The valve will stop liquid nitrogen from entering the chamber while the doors are open following table identifies these valves Table 6 Liquid Nitrogen Cooling Safety Solenoid Valve REAL 20 REAL 20T 91 stands for electrical current stands for gas pressure 10 An I P valve is not used for liquid nitrogen control on TC TVC 1 11001199 REAL www realchambers com Real Chambers Test Chambers Replacement Parts Item Real Chambers P N Cooling Solenoid Valve 10973287 Cooling Safety Valve REAL 30 36 48 amp REAL 30T 36T 48T The chambers have cooling safety valves that acts as a liquid nitrogen safety The valve operates when the doors of the chamber are open The valve will stop liquid nitrogen from entering the chamber while the doors are open The following table identifies these valves Table 6 Cooling Safety Valves Real Chambers P N REAL 36 36T REAL 48 48T LN Safety 88 2548 01001 Valve complete valve REAL 30 30T LN Safety Valve complete 11531739 valve Vibration Safety Solenoid This valve operates when the vibration event on the controller is turned on When the valve is energized it allows gas pressure to flow to the volume booster The valve is a three way valve with one branch open to atmosph
22. The chamber s vibration can also be controlled while in Automatic Mode To do this enter vibration setpoints in the profile as it is being defined on the CTI For each step that has a vibration setpoint be sure to turn the Vibration Event on Vibration can be controlled during a thermal ramp step a thermal dwell step or a step with no thermal control at all a vibration only step A step will not control to a temperature setpoint if the NOT button is turned to ON for that particular step By doing this the technician can create a step that only controls vibration 19 11001199 Rev www realchambers com Real Chamber Corporation Test Chambers Optional Vibration System Operation o Accelerometer Limits The standard accelerometer supplied with the chamber is capable of operating at temperatures below 121 C If the chamber is going to operate at temperatures greater than 121 C the accelerometer should be removed An optional accelerometer is available that has an extended high temperature range Consult the factory for details on the optional high temperature accelerometer The low temperature limit of the accelerometer is 100 C which is the same as the low temperature design limit of the chamber 20 11001199 Rev M www realchambers com Real Chambers Test Chambers Replacement Parts System Maintenance Maintenance of this equipment should be done by a qualified technician Hi
23. alve 4 With all function switches in OFF position turn on main disconnect switch if not already on 5 Turn the control power switch to the ON position 6 Be sure all doors are closed securely For REAL 36T REAL 36 and REAL 48T REAL 48 models close doors by manually pushing closed as far as possible The doors will close when power is turned on and door close switch activated 7 Program or set up profiles and test conditions as required or operate the chamber in Manual Mode Air Safety Controller Operation The air safety temperature controller is an independent temperature safety device It is designed to provide an added level of safety to ensure products under test are not destroyed as a result of excessive heating or cooling This controller monitors a three wire RTD installed in the air plenum The controller provides two alarms one when the temperature is above the high limit and one when the temperature is below the low limit If the temperature is above the high limit the controller will disable the heating function of the chamber by sending a signal to the input of the CTI controller The alarm will be identified in the CTI controller and will be visually evident by the SP no longer being illuminated on the air safety controller If the temperature goes below the low limit the controller will disable the cooling function of the chamber The alarm will be identified in the CTI controller and will be visually evident b
24. ame temperature as the set point The thermocouple runs from the product under test into the control box Ifa replacement thermocouple is installed it is important to ensure that the sheathing is good over a temperature range of 200 C to 300 C Table 10 Replacement Thermocouple Item Real Chambers P N Replacement Thermocouple 10987443 Air Temperature Thermocouple This type T thermocouple is used as a second input to the controller It helps control the product under test temperature such that it achieves the set point as quickly as possible while minimizing any over shoot This second temperature input allows utilization of cascade temperature control This thermocouple is not directly visible as it is mounted in the air flow plenum and wired into the control box If the thermocouple is replaced it is important to ensure that the sheathing is good over a temperature range of 200 C to 300 C Refer to the above table for a replacement thermocouple RTD The RTD monitors the air temperature as a backup safety device The RTD is not directly visible as it is mounted in the air flow plenum area and wired to the air safety device in the control box When this device measures a temperature greater than the high temperature set point or less than the low temperature set point the air safety device interrupts the heating cooling of the chamber until the chamber is reset 11001199 Rev M www realchambers com
25. be calibrated at least once a year Note the REAL 20 20T does not have a cooling I P valve as it uses time proportional control of the cooling valve Both I P valves are located inside the control box 34 RPIREAL 11001199 Rev M Gere www realchambers com Real Chambers Test Chambers Drawings Appendix DRAWINGS APPENDIX ITEM DRAWING NUMBER Outline and Dimension Drawing 20 B 10998281 Outline and Dimension Drawing 30 B 11739901 Outline and Dimension Drawing 36 B 10998290 Outline and Dimension Drawing REAL 48 B 10998302 Pneumatic Schematic REA L 20 i sccisecccstsncedesassed B 14136540 Pneumatic Schematic 30 202 14136558 Pneumatic Schematic REAL 36 cscs ceccisccadecdedscessenncedevccnbanscuecnsateanees B 14136566 Pneumatic Schematic 48 4 2422221 1 B 14136574 Liquid Nitrogen Schematic 20 24424 22 1 A 11001586 Liquid Nitrogen Schematic 30 2 40 2222 2 14090431 Liquid Nitrogen Schematic 36 2444244244 2 C 14170836 Liquid Nitrogen Schematic 48 C 14210447 Electrical Schematic 8S 11001199 Rev M www realchambers com
26. cted by this switch This switch should be in the OFF position whenever the control console door is open for servicing Note that turning this switch off does not remove the live voltage from the incoming power lines but removes any live voltages after the disconnect switch If maintenance work is to be done inside control box chamber itself it is recommended to lock out the power to the chamber The disconnect handle has a tab that can be retracted for lock out purposes If the control box door is closed properly a pad lock can be placed through the tab which will prohibit personnel from accidentally turning the chamber s power on while a service technician is working in the chamber o Emergency Stop Button The E Stop button is a red mushroom button on the front of the control panel The normal position for this button is pulled out When the button is pushed in all chamber functions will stop When the button is pushed in the alarm horn will sound and the silence button will blink until the alarm is acknowledged The alarm event will be logged in the alarm history screen of the PLC controller This button should only be used for emergency purposes If the button is used the event causing the shut down should be confirmed ok then the E Stop button should be turned clockwise to resume normal chamber operation If the E Stop button was activated in the middle of a profile that profile will have to be
27. d call for technical support Do not start the chamber Measure and record the main line 460 575 VAC voltage Measure and record the 120 vac voltage Measure and record voltage at all DC power supplies Turn Control Power ON Close doors and check that all proximity switches engage Turn on fan motor circuit breakers Put the controller in Manual Mode and turn on the Fans Event Ensure fans are rotating in the correct direction With chamber doors closed fan event on control power on and motor circuit breakers on the fans should come on Then open the chamber doors and look up at the fans to determine rotational direction If the fans are not rotating in the proper direction the heaters will not get sufficient air flow and cause premature burn out and failure of the heater elements If the fans are not rotating in the proper direction disconnect all power and switch two of the power leads to the chamber this should change the rotational direction Both fans should be either spinning correctly or incorrectly You should not find that one is correct and the other is not The following diagram shows a view of the blower as looking up from the bottom and the correct fan rotational direction 4 DIRECTION ROTATION DIRECTION 72 Figure 2 Fan rotation direction 10 After the fan rotational direction has been determined to be correct measure and record current draw of each fan motor 110
28. e chamber s cooling system The cooling rates specified for the chamber are only guaranteed if the LN supply is vacuum insulated and properly sized If properly sized and insulated lines are not used the cooling specifications will not be met A line relief valve must be installed between safety valve and the manual shut off valve immediately before the chamber This relief valve should be rated at a pressure which is the lesser of 150 psig and the pressure rating of the LN2 supply piping This relief valve is not included with the chamber and should be taken care of at installation o Exhaust Gas Plumbing For each unit check the table labeled Dimensions and Utilities in the Specifications and Utilities section With this information route the exhaust to the outside of the building No fans or restrictions should be placed in this line Any fans or restrictions will decrease chamber performance It is important to vent the chamber to the outside of the building for safety reasons If the chamber is not vented to the outside of the building there is a risk of oxygen depleted atmosphere The exhaust plumbing should be straight up through the roof of the building for optimal performance Any bends and horizontal rooms will reduce the performance of the chamber In order to prevent any water snow debris from entering the chamber from the outside into the chamber make sure proper check valves are installed at the exit of the exhau
29. ececuseceeseeeess 5 TABLE 2 SYSTEM DETAI S oorr iiaae aa 6 TABLE 3 DIMENSIONS AND UTILITIES 7 4 lt 24 TABLE 5 LIQUID NITROGEN COOLING SOLENOID VALVE REAL 20 REAL 20T 24 TABLE 6 COOLING SAFETY VALVES 25 TABLE 7 VIBRATION SAFETY SOLENOID c0cccsssssssessscssssssssssssssssesssssssesssesssssssesseeseees 25 TABLE 8 AIR PURGE 6000 25 TABLE 9 PROPORTIONAL LIQUID NITROGEN 26 TABLE 10 REPLACEMENT THERMOCOUPLE 0 8 26 TABLE 11 REPLACEMENT 27 TABLE 12 REPLACEMENT DOOR GUARD SWITCH 27 TABLE 13 REPLACEMENT LIGHT 27 TABLE 14 SOLID STATE RELAY 22 27 TABLE 15 REPLACEMENT HAMMERS 29 TABLE 16 REPLACEMENT ACCELEROMETER AND CABLE 29 TABLE 17 REPLACEMENT VOLUME 04 44 29 TABLE 18 REPLACEMENT AIR LUBRICATOR 1
30. eceseeueesescesesessaueusseseesess 14 EXHAUST GAS 0000060 14 INSTALLING CHAMBER 8 2 0000 000 010000000 14 LOCATION OF UTILITY CONNECTIONS 04040000000 00000 9 99 15 5 2 20 1 1 01 00000 15 5 5 18 ATR SAFETY CONTROLLER 100 18 CHAMBER PLC CONTROLLER 2 0 0 0000000 0 19 OPTIONAL VIBRATION SYSTEM 19 11001199 Rev M www realchambers com Real Chambers Test Chambers Table of Contents MOUNTING OF 19 MANUAL 5 19 o AUTOMATIC 19 ACCELEROMETER 8 440 0 0 0000 20 SYSTEM MAINTENANCE 21 o MAINTENANCE TASKS BE PERFOR
31. ed Blower Range 100 to 150 C Temperature Control 1 C on Stabilization Tri Axial Vibration All Vibration Models Level Up to 60 gRMS on unloaded table Range 5 to 5000 Hz Control 1 gRMS within 1 min of settling Tri Axial vibration is only available on REAL model chambers This range is consistent with the use of the chamber in HALT and HASS applications which include fast thermal transitions and short periodic dwells only PREAL www realchambers com 11001199 Rev M Real Chambers Test Chambers Specs and Utility Requirements Table 2 System Details System Details Cooling Heating Doors Vibration Table Support Vibration Table Size REAL 20T REAL 20 LN On Off Control Direct Atomization in Plenum 20kW Solid State Time Proportional control zero firing crossover One Full Opening Door 127 12 Window 107 10 view area One set of four 4 springs rated at 70158 3 1 8 Total static load of 280 Ibs 127 kg 20 20 50 8 50 8 cm mounting surface 3 8 16 s s inserts on 4 centers Thermobond insulated surface REAL 30T REAL 30 LN Linear Valve Control Direct Atomization in Plenum 48kW Solid State Time Proportional control zero firing crossover Two Full Opening Doors 24x24 window ea 227 22 view area One set of four 4 springs rated at 250165 1 13 4 Total static load of 1000 165 453 6 kg 30 30
32. ere When the valve is not energized the air line to the volume booster is routed to atmosphere Table 7 Vibration Safety Solenoid 7 1 Real Chambers P N Solenoid Air Purge Solenoid When this valve is energized it allows oxygenated airflow into the chamber The valve is a three way valve with one branch open to atmosphere It is used to help oxygenate the air in the chamber before the chamber doors are opened Table 8 Air Purge Solenoid Real Chambers P N Air Purge Solenoid 23001021 25 11001199 Rev REAL www realchambers com Real Chambers Test Chambers Replacement Parts Proportional Liquid Nitrogen Cooling Valve on REAL 20 REAL 20T This valve controls the flow of liquid nitrogen into the chamber based on the pressure input to the top of the valve If there is less than 3 psig pressure applied to the top of the valve the valve should not allow any liquid nitrogen flow into the chamber If 15 psig is applied to the top of the valve the valve should be completely open At pressures between 3 and 15 psig the valve will be somewhere between closed and wide open Table 9 Proportional Liquid Nitrogen Valve Real Chambers P N Proportional Valve complete valve complete valve o Sensors Product Temperature Thermocouple This type T thermocouple is designed to be placed directly on the product under test The chamber will control such that this thermocouple measures the s
33. gh voltage electrical systems cryogenic plumbing high pressure gas and mechanical systems all represent a potential for injury or death The main power must be turned off at the main disconnect and all gas supplies should be turned off prior to servicing this equipment It is a good practice to keep a maintenance log for the chamber The log should contain the tasks that must be accomplished and when they were performed Real Chambers Corporation does offer a service contract in which we will send a technician out to do routine maintenance items Different plans are available If interested please call 1 888 292 1552 for details o Maintenance Tasks to be Performed on a Daily Basis 1 Check the high and low temperature settings of the Site Alarm Limits and Profile Alarm Limits to insure that they are set to the appropriate settings for the product that is being tested The high temperature set point should never be any higher than 2009 The low temperature set point should never be any lower than 100 C Entering set points that exceed either of these limits will void the chamber warranty 2 Make sure that the supply is on and that there is sufficient LN to perform your test The pressure of the should also be verified and maintained near 50 psig 3 Make sure that the compressed air to the chamber is turned on o Maintenance Tasks to be Performed on a Monthly Basis 1 The proper function of the safety control devices
34. grammer The inputs to the temperature controller programmer are type T thermocouples One of the thermocouples is mounted in the airflow plenum and is not directly visible The second thermocouple is designed to monitor the temperature of the device under test A temperature Hi Lo limit control protects product and equipment against thermal runaway due to a primary controller fault or control device failure The input to the Hi Lo limit control is a three wire resistance temperature device RTD The RTD is mounted in the air flow plenum and is not directly visible o Optional Vibration Table and Hammers Vibration simulation is achieved using multiple pneumatically actuated pistons These pistons are oriented to act in conjunction with a carefully engineered vibration table This transmits broad frequency vibration patterns to the device under test as it experiences six degrees of freedom at controlled intensity Operator Control Switches 11001199 RPIREAL www realchambers com Real Chambers Test Chambers Features The control console has several selector switches and buttons These switches buttons provide the following control 1 Control Power off on Turns control power on and off Note this does not remove power from the rest of the chamber 2 Alarm Silence illuminated push button Pushing this button will silence the alarm horn and signal the controller that the alarm has been acknowledged at that
35. losed Control power not on Fan Event on controller not on Door guard switch s not engaged Motor starter circuit breaker tripped Control relay s not closed Chamber cools but doesn t heat Reset button not pressed not illuminated Heat Event on controller not on Air temperature high safety limit exceeded Heater circuit breakers tripped Controller not calling for heat Controller internal limit exceeded Controller not configured properly Controller not giving output Heater contactors not pulled in SSR failed Chamber heats but doesn t cool Reset button not pressed not illuminated Cooling Event on controller not turned on Air temperature cold safety limit exceeded Controller not calling for cool Controller internal limit exceeded Controller not configured properly Controller not giving output No air pressure Cooling safety solenoid not open Cooling I P valve failed or needs calibration Cooling control valve failed Chamber doesn t heat or cool Control power not on Door s not closed Fans not on Reset button not pressed Heat and Cool Events on controller not on Controller has alarm error Controller not configured properly Timer relay not engaging Air temperature limits exceeded Air temperature safety controller not configured properly 32 11001199 Rev REAL www realchambers com Real Chambers Test Chambers Drawings Appendix No vibration in Manual mode Vibration safety solenoid not open Vibration I P
36. ormat is information to help avoid personal injury and or property damage PNW ARNING Text in this format is information to help avoid serious personal injury or death and property damage Table of Contents 11001199 Rev M il REAL www realchambers com ill Real Chambers Test Chambers Table of Contents OVERVIEW iesssccstestetsstcscscssccosceccacsoncecbeszodssdessbassecssnecesessnsedbesescoadesdncsessnabscasesansedoedabdeadeeces II SERVICE DESIGN 8 6 25 05 DURING THIS PROCESS YOU WILL 0 00 SYMBOLS AND STATEMENTS THROUGHOUT THIS TEXT AND THEIR MEANING DESCRIPTION OF SAFETY 8 4222 2 2 MAIN DISCONNECT SWITCH 2 EMERGENCY STOP 22 420 000000000000 2 EMERGENCY DOOR OPEN BUTTON ONLY AVAILABLE 9 16 SQ MODELS 3 DOOR INTERLOCK SWITCHES cccccssecceccescececcsceccccsseececcseccecnseeeccnseceeensneeeeeneaeess 4 o TEMPERATURE HIGH LOW LIMIT CONTROLLER 2 2 00000000000000000
37. s a good idea to finish each utility connection in a flexible form to ease installation o Start Up Procedure NW ARNING Control box contains high voltage Any work done on the chamber with the control box door open should be done by trained personnel only Serious injury or death may result When starting to apply power it should be done in steps for ultimate safety and to ensure no damage was done in shipping A copy of the manufacturing traveler is sent with the chamber The traveler is provided to compare measured values at installation with those measured during manufacturing test out The following items should be measured one at a time in the following order If any measurements do not closely match the factory call for technical support before starting the chamber CAUTION It is very important to follow this procedure to ensure components are working properly Although all are important special attention should be paid to items 1 2 9 10 14 15 18 20 21 and Vibration 2 and 6 1 Measure and record the resistances of all heaters phase to phase 11001199 www realchambers com Real Chambers Test Chambers System Installation If these readings do not closely match factory measurements STOP and call for technical support Do not start the chamber 2 Measure the resistances of each heater leg to ground If any of these readings are not infinite in resistance STOP an
38. s up stream of the cooling control valve On the Real Chambers systems the liquid nitrogen controls consist of two valves The first valve is a cooling safety valve The cooling safety valve closes if various safety conditions occur The valve is open under normal chamber cooling operations The second valve is a proportional control valve used for controlling the amount of liquid nitrogen let into the chamber s plenum The cooling control valve receives variable signals from the chamber s controller which instructs the valve to open the required amount Both of these valves are vacuum insulated to minimize any condensation frost build up on the outside of the valves The following is a picture of one of these valve assemblies 11001199 Rev M www realchambers com Real Chambers Test Chambers Features Vacuum insulated X pneumatically Vacuum insulated BE L actuated cooling pneumatically control valve actuated cooling safety valve Vacuum insulated female bayonet liquid nitrogen connection Circulation Fan The chamber is equipped with non corrosive air circulation fan s which provide air circulation to distribute temperature controlled air and minimize chamber temperature gradients Baffles provide output air openings to direct the airflow in the chamber Instruments Product temperature and air temperature are controlled by a unique temperature controller pro
39. should be checked on a regular basis Replace any items that may be damaged or worn 2 Check the operation of the Site Alarm Limits and the Profile Alarm Limits To test the high temperature alarm limits enter a temperature set point that is 10 C greater than the Alarm point To test the low temperature alarm limits enter a temperature set point that is 10 C less than the Alarm point The Air alarm limits and the Product alarm limits should all be tested 3 The electrical compartment should be kept clean and vacuumed if necessary 8 Units with the high speed blower option must limit upper temperatures to below 150 C 11001199 Rev M www realchambers com 21 Real Chambers Test Chambers Replacement Parts 4 The current draws of the heaters and blower motors should be checked and recorded for future reference to determine if there is any irregularity Extreme caution must be taken whenever working with high voltage components Increased current draws may be an early sign of heater problems It is also recommended to record the heaters phase to phase resistances NW ARNING Control box contains high voltage Any work done on the chamber with the control box door open should be done by trained personnel only Serious injury or death may result 5 The chamber lights should be checked and replaced if burned out 6 Check the door proximity switches by leaving the left hand door for REAL 48T REAL 48 of the
40. st gas plumbing o Installing Chamber Lights The chambers are fully tested at the manufacture s facility before they ship This testing includes testing the chamber lights However to minimize risk of the lights being damaged in shipment they are removed and shipped in the control box The lights are installed by aligning the two pins of the bulb with the holes in the fixture and simply pushing the lights into the fixtures It is recommended to use a small piece of to secure the light bulb to the fixture This piece of wire will protect from the bulb vibrating out of the fixture during normal use of the chamber The following figure shows a lamp 5 Any damage to equipment due to debris in the compressed air line is not covered under warranty 6 The wire should have insulation which can withstand the full temperature range of the chamber 11001199 Rev M www realchambers com 14 Real Chambers Test Chambers System Installation held into the fixture with the thin wires The figure has highlighted the wires to make them more visible Thin pieces of wire to 22 thold lamp in fixture Figure 1 Light bulb retention o Location of Utility Connections The Appendix of this manual contains outline and dimension O amp D drawings of the standard chambers Refer to these drawings for the most current utility connection dimensions Although the dimensions on these drawings are most current and accurate it is alway
41. ties of air to flow at elevated pressures by supplying it with a small quantity of air at the desired pressure The volume booster acts as a dome loaded pressure regulator The control air to the volume booster comes from the vibration I P valve The higher quantity of air is passed to the pneumatic hammers which create the vibration Table 17 Replacement Volume Booster 29 11001199 Rev REAL www realchambers com Real Chambers Test Chambers Replacement Parts Real Chambers P N REAL 20 Volume Booster 10963759 Air Lubricator This device supplies a controlled amount of oil to the compressed air line that is feeding the pneumatic hammers of the vibration system There is an adjusting dial on the top of the unit that allows adjustment of the quantity of oil that is delivered to the system This should be set at no more than one drop of oil per 45 seconds of air flow Table 18 Replacement Air Lubricator Real Chambers P N REAL 20 Compressed Air Lubricator 10963812 REAL 30 36 48 Compressed Air Lubricator 10957754 Air Fittings for Hammers Each vibrator has two air fittings which connect to the air supply and air exhaust hoses These fittings have a standard pipe thread on one side and a flare fitting on the other side The following table lists the vibrator size and the part numbers for the fittings required Table 19 Hammer Air Fittings Inlet Air Fitting P N Exhaust Air Fitting P N 11786029 11786029
42. time To clear an alarm push and hold the alarm silence button for 2 seconds 3 Door Latch Toggle Turing this switch pneumatically opens and closes the front and rear bi parting doors gt The alarm condition must no longer be present 5 REAL 36 36T amp REAL 48 48T models only 11001199 RPIREAL www realchambers com Real Chambers Test Chambers Features 4 Emergency Stop push turn Pushing this red mushroom head button will stop all chamber functions and log the alarm in the controller s alarm history All output functions will stop and any profile will stop as chamber returns to an idle state If a profile was running it will need to be re started from the beginning if an E Stop had been issued To reset the E Stop turn the button clockwise as indicated on the button Controller The control system uses a process controller to facilitate numerous standard and optional control functions Inputs to the controller include e Thermocouples e Temperature controller event status e Operator function selector switches e Remote start status Door closed proximity switches e Auxiliaries from motor and heater contactors The controller processes the input information and directly controls outputs to e Fan starters e Door operators REAL 36 REAL 48 Proportional LN valve e Optional vibration control solenoids e Redundant electric heat contactors Optional vibration valve
43. tion Manual for more information regarding the system installation The Site Preparation Manual is intended to be read in its entirety well before the delivery of the chamber o Location When deciding on a location to install the chamber it is important to note which side or sides of the unit will be against the wall and the amount of clearance necessary for safe operation and accessibility Keep in mind how much space will be necessary to open the doors walk to and access service the control panels perform service etc The floor should be level If perfectly level floor space is not available use a sturdy metal plate at each leg necessary to shim the legs making the chamber level and secure More information and hints on chamber location is included in the Site Preparation Manual Electrical Power Hook Up The electrical power needs to be hooked up from above and into the top of the control box A large hole is provided in the top of the control console for the entrance of the power wires The power specs are given in the Specifications section of this manual It is extremely important to run a properly sized ground wire It is often beneficial to provide a ground wire that is actually larger than conventional standards Doing so may aid in reducing any electrical noise problems When running power there should be at least one to two feet of flexible conduit before the chamber to leave room for expansion and contraction of the floor as
44. ttempt to start up the system If it starts up have the safety button valve serviced and or replaced The system should not start up with the emergency door open button pushed in 22 11001199 www realchambers com Real Chambers Test Chambers Replacement Parts 12 Check function of the E stop mushroom button Chamber should shutdown its functions when this is pushed in o Maintenance Tasks to be Performed Every Three Months 1 Heater banks should be removed and visually inspected for signs of excess droop in the coiled heater wire If heater wires have excess droop they should be replaced immediately Failure to replace drooping wires may result in a short circuit and damage to many other components 2 Check and tighten set screws and bottom retention bolt that hold the blower wheel onto the motor shaft o Maintenance Tasks to be Performed on an Annual Basis 1 Calibrate the controller Refer to controller manual for details on calibrating 2 Calibrate I P valves Refer to the supplied I P valve manual for details on calibrating 3 The vibration hammers should be removed and cleaned 4 The vibration hammer mounting bolts should be removed and anti seize compound should be re applied Not doing this can lead to premature failure of the spacers in the vibration table Bolts for large hammers should be torqued to 125 ft lbs Bolts for medium hammers should be torqued to 50 ft lbs 23 11001199
45. ure set point of this controller use the following procedure 1 Press the D button on the front of the controller it will now flash SP 2 Use the up and down arrows to select the high temperature alarm limit desired 3 Press the button on the front of the controller To adjust the low temperature set point of this controller use the following procedure 1 Press the D button on the front of the controller three times until AL 2 flashes 2 Use the up and down arrows to select the low temperature alarm limit desired 3 Press the button on the front of the controller 11001199 Rev M www realchambers com Real Chambers Test Chambers Specs and Utility Requirements Specifications and Utility Requirements Real Chambers builds multiple chamber sizes with various optional features available Information shown is for standard models Your chamber may vary if special requests were made at time of purchase concerning workspace dimensions product temperature ramp rates non standard line voltages or any other modifications Real Chambers systems are designed for use in typical laboratory or manufacturing environments Real Chambers systems are designed for use in temperatures from 5 to 100F 10C to 38C and humidity levels below 30 Table 1 Chamber Performance Specifications Performance Temperature All Models Change Rate Up to 60 C min over range of Range 100 to 200 C High Spe
46. valve failed or needs calibration Volume booster failed o Component Identification Location Door Guard Switch The door guard switch is located at the top of the chamber door The REAL 20 20T has only one proximity switch while all other chambers have two This switch is wired into the control system and is used for safety measures If the doors open the controller gets notified via the switch and disables various chamber functions The following picture shows the door guard switch Cable goes to control box Sensing part of switch Switch actuator 33 RPIREAL 11001199 Rev M www realchambers com Real Chambers Test Chambers Drawings Appendix Emergency Palm Button The emergency palm button is used on the REAL 48 48T This button is an emergency safety device If the button is pushed in the doors will automatically open and the chamber will stop operation To reset the chamber the button needs to be pulled out towards the center of the chamber The following picture identifies the palm button on the inside of the chamber mergency palm button Cooling and Vibration I P Valves The cooling and vibration I P valves convert controller s linear 4 20mA signal into a proportional pressure signal In the case of the cooling I P valve the 4 20mA signal is converted to a pressure of 3 15 psig For the vibration I P valve the 4 20mA signal is converted to a pressure of 0 120 psig Both of these valves should
47. y the A2 no longer being illuminated on the air safety controller If the temperature is between the high limit and the low limit the controller will display both SP and A2 11001199 Rev M www realchambers com 18 Real Chamber Corporation Test Chambers Optional Vibration System Operation o Chamber CTI Controller Operation Complete documentation of the CTI touch screen controller and its operation is contained in a separate manual which is supplied with the chamber Optional Vibration System Operation o Mounting of Product The vibration table has mounting points located in a grid pattern These mounting points are 3 8 16 threaded inserts in the table The device to be tested should be securely attached to the vibration table directly or by use of a properly designed fixture Any holes that are not used for mounting the product must retain the mounting bolt and hold down washer as supplied from the factory The vibration system should not be run without the mounting bolts and hold down washers securely in place Running the vibration system without the mounting washers and bolts in place will void the warranty of the table o Manual Mode Vibration can be run in Manual mode with the CTI controller with the following procedure 1 Put the controller in Manual Mode 2 Turn on the Vibration Event 3 Enter a vibration setpoint 4 Turn the vibration section Run button to ON o Automatic Mode
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