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Chapter 7 – Maintenance

TestEquity TEC1 Thermoelectric Temperature Chamber

Page 7-1

Chapter 7 – Maintenance

Preventive Maintenance Schedule

Daily or As Needed

•

Clean chamber interior and exterior.

•

Listen for abnormal noise or vibration.

Every 6 Months

•

Verify the chamber performance.

Every 12 Months

•

Verify the calibration.

How to clean the chamber interior and exterior

•

Wipe or vacuum out all debris.

•

Clean surfaces with a damp cloth, mild detergent, or stainless-steel cleaner. Avoid cleaners

that are abrasive or leave a residue. NEVER use steel wool.

•

Clean the exterior painted surfaces with a damp cloth or mild detergent. If you are using a

detergent, test a small inconspicuous area to make sure it does not damage the finish.

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Содержание TEC1

Страница 1: ...e For TEC1 001 s n 1100168 and above Operation and Service Manual TestEquity LLC 6100 Condor Drive Moorpark CA 93021 Support 877 512 3457 Toll Free 805 480 0636 Corporate 800 732 3457 805 498 9933 http www testequity com Copyright 2010 2018 TestEquity LLC Rev 2 1 April 9 2018 ...

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Страница 3: ...1 TEMP Switch 3 1 Convenience Outlet ______________________________________________________________________ 3 1 Loading the Chamber ____________________________________________________________________ 3 2 Performance Considerations 3 3 Internal Test Fixtures 3 3 Chapter 4 Temperature Controller 4 1 Introduction ____________________________________________________________________________ 4 1 Temper...

Страница 4: ...g 7 4 Temperature Control 7 4 Troubleshooting _________________________________________________________________________ 7 5 Recommended Spare Parts ________________________________________________________________ 7 6 Major Electrical Parts____________________________________________________________________ 7 6 General Replaceable Parts ______________________________________________________________...

Страница 5: ...ration in a conditioned laboratory environment Operation above 27 C 80 F will have a significant impact on low temperature operation CAUTION For optimum performance there should be a minimum of 4 inch clearance between the fans on the back of the chamber and a wall Operation of the chamber directly against a wall will result in 25 less cooling capacity Operation Safety Notices CAUTION The EZ Zone ...

Страница 6: ...ing oven There are NO provisions for venting fumes WARNING The chamber door must remain closed while the chamber is operating If you need to open the door while the chamber is operating wear safety goggles to prevent the high velocity airflow from blowing particles or objects into your eyes CAUTION If your test sample is energized it may be capable of raising the workspace temperature beyond safe ...

Страница 7: ...ded and polarized outlet 1 Inspect the chamber for signs of shipping damage 2 Read this entire manual 3 Select a suitable location to place the chamber for use 4 Plug the power cord to a 115 VAC 60 Hz power source or 230 V 50 Hz if configured for export use See Input Voltage Configuration on the next page 5 Perform following the procedure How to verify the chamber performance in the Maintenance ch...

Страница 8: ...in can be ignored Input Voltage Configuration Does not apply to model TEC1 001 which is only rated for 115V input This chamber can be configured for 115V 88 to 132VAC or 230 V 176 to 264VAC 50 60 Hz input The chamber ships pre configured for the correct input voltage based on the county it ships to To change the input voltage use the following procedure 1 Make sure the chamber is NOT plugged into ...

Страница 9: ...witch OFF to ensure the longest possible life for the fans while reducing power consumption and audible noise You may also turn the POWER Switch OFF Front Panel Switches POWER Switch The POWER Switch controls power to the entire chamber TEMP Switch The TEMP Switch enables all chamber functions When the POWER Switch is ON and the TEMP Switch is OFF only the Temperature Controller is operational Whe...

Страница 10: ...ile the chamber is operating wear safety goggles to prevent the high velocity airflow from blowing particles or objects into your eyes CAUTION If your test sample is energized it may be capable of raising the workspace temperature beyond safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s cooling system fails CAUTION To prevent damage to...

Страница 11: ...ther than the controller s sensor is with the Calibration Offset parameter See page 56 of the EZ Zone PM User s Manual for details Internal Test Fixtures Some applications require internal fixtures to support test samples and provide a convenient method of connecting wires and sensors Fixtures must be designed to minimize their impact on chamber functionality and performance Fixtures should be des...

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Страница 13: ...tem requirements and to perform optimally over a wide range of operating conditions Improper modifications to these setup values can result in erratic performance and unreliable operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing If there is any doubt please call TestEquity before proceeding CAUTION NEVER select Factory Default in the Diagnostic ...

Страница 14: ...s Home Page from anywhere Press the Infinity Key ˆ for two seconds to return to the home page Profiling Page from Home Page Press the Advance Key for three seconds Operations page from Home Page Press both the Up and Down keys for three seconds Setup Page from Home Page Press both the Up and Down keys for six seconds Factory Page from Home Page Press both the Advance and Infinity ˆ keys for six se...

Страница 15: ...ess Value Actual chamber temperature upper display AcSP Active Set Point Temperature Set Point lower display hPr1 Heat Power The percentage of heat throttle CPr1 Cool Power The percentage of heat throttle AUt1 Autotune Autotune yes or no While Autotune is active the Home Page will display Attn tUn1 When the Autotune is complete the message will clear automatically idS1 Idle Set Point Set a tempera...

Страница 16: ...e EZ Zone PM User s Manual for detailed instructions on using the Profile function To enter the Profiling Page from Home Page Press the Advance Key for three seconds until ProF appears in the lower display NOTES TestEquity recommends having the End step type to be Hold or User TestEquity does NOT recommend using an end step type of Off This does not turn off the chamber fans and the temperature wi...

Страница 17: ...cess to menus for configuring the controller hardware Setup Page access from Home Page Press both the Up and Down keys for six seconds Ai will appear in the upper display and Set will appear in the lower display CAUTION The EZ Zone Temperature Controller setup values have been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide range of...

Страница 18: ...d to accommodate a null modem cable To communicate with the controller from a PC you need to run software that uses 32 bit Modbus RTU protocol Each controller function has a register number which can be read or written to when applicable These registers are listed Chapters 6 through 9 of the EZ Zone PM Controller Communications Manual RS 232C Modbus programming resources can be downloaded from htt...

Страница 19: ...art programs like ICS s GPIBKybd program These programs can recognize the command as a query and automatically read the response Setting Modbus Device Timeouts The time that the 4899A 8099 waits to receive a response from the Modbus device is programmable by the D command This is an internal 4899A 8099 timeout and not the same as the GPIB bus timeout If the 4899A 8099 does not receive a response w...

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Страница 21: ...rtunately there is nothing you can do to improve upon the designed in performance Modifying the chamber will permanently damage the chamber and void the warranty Why is there water coming out of the tube in the back of the chamber Under what conditions do I need to be concerned about condensation Any time the ambient air is subjected to temperatures below the dew point moisture will condense out o...

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Страница 23: ... as indicated on the temperature controller Transition times do not include the effect of proportional band when approaching the temperature set point Live Load Rating 37 C 23 C 15 C 10 C 90 Watts 50 Watts 35 Watts 20 Watts Power Requirements Input Voltage 88 to 132VAC 176 to 264VAC 50 60 Hz internal switch for voltage range NOTE Model TEC1 001 is rated for 115 V nominal input only Current Draw 6A...

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Страница 25: ...hamber performance Every 12 Months Verify the calibration How to clean the chamber interior and exterior Wipe or vacuum out all debris Clean surfaces with a damp cloth mild detergent or stainless steel cleaner Avoid cleaners that are abrasive or leave a residue NEVER use steel wool Clean the exterior painted surfaces with a damp cloth or mild detergent If you are using a detergent test a small inc...

Страница 26: ...The Temperature Controller s 1 light should be ON continuously and the Controller s 2 light should be OFF The chamber should begin to heat up within approximately 20 seconds 6 The Temperature Controller should begin controlling 1 light cycles ON OFF at approximately 47 C within approximately 6 minutes 7 The chamber temperature should slowly increase and stabilize to 55 0 C It should NOT overshoot ...

Страница 27: ... in the chamber You cannot calibrate to improve gradients The correct way to adjust what the temperature controller displays compared to what is measured at some point other than the controller s sensor is with the Calibration Offset parameter See page 28 and 29 of the EZ Zone PM User s Manual for details Total chamber accuracy including the effects of controller accuracy sensor accuracy and gradi...

Страница 28: ... such as CFC or other gases has a more compact and simple structure than a conventional refrigeration system Temperature Control Refer to the electrical schematic to identify the items referenced below Three thermoelectric modules TE1 2 3 provide cooling and heating The air is circulated by a fan which is mounted to each thermoelectric module A DC power supply PS1 provides 12 VDC to power the fans...

Страница 29: ...rloaded Does not cool at all If temperature controller light 2 is ON fans are running a Defective output 2 on Temperature Controller b Defective SSR1 or SSR2 Cools too slowly or does not cool down to 10 C If temperature controller light 2 is ON fans are running a One Thermoelectric Module is open b One of the fans is not running defective c Chamber interior is overloaded d Test sample is energized...

Страница 30: ... Qualtek 738W CX2 01 222303 1 ea DC Power Supply 12 VDC 24A Mean Well LRS350 12 PS1 222620 1 ea Fan for electrical enclosure ebm Papst 3412N FM1 222302 1 ea Fans for Thermoelectric Assembly ebm Papst 8412NH TF1 3 EF1 3 383449 6 ea Power Cord for USA Qualtek 562 312003 01 222309 1 ea Solid State Relay 30A DC Crouzet 84 134 870 SSR1 4 222300 4 ea Switch SPST Rocker Carlingswitch LRA211 RA B 125N SW1...

Страница 31: ...Improper modifications to these setup values can result in erratic performance and unreliable operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing If there is any doubt please call TestEquity before proceeding CAUTION The EZ Zone Temperature Controller Alarm function is NOT used in the chamber and is NOT connected CAUTION NEVER select Factory Defa...

Страница 32: ...Cool Output Curve C Cr off Tru Tune Enable t tUn no Autotune Aggressiveness t AGr Crit Peltier Delay P dL 0 2 User Failure Action UFa oFF Input Error Failure FAiL oFF Manual Power MAn 0 0 Open Loop Detect Enable L dE no Ramp Action rP oFF Low Set Point L SP 9 0 C High Set Point h SP 61 0 C Set Point Low Open Loop SP Lo 100 0 Set Point High Open Loop SP hi 100 0 Setup Menu Output Menu Output 1 Para...

Страница 33: ...igital Input Function Fn nonE Instance Fi 0 Setup Menu Global Menu Parameter Prompt Value Display Units C_F C AC Line Frequency AC FL 60 Ramping Type r tYP ti Profile Type P tyP StPt Guaranteed Soak Enable gSE on Guaranteed Soak Deviation gSd1 2 0 C Setup Menu Communications Menu Communications 1 Parameter Prompt Value Address Standard Bus Ad s 1 Temperature Units C_F C Setup Menu Communications M...

Страница 34: ...Operations Page Parameters Operations page access from Home Page Press both the Up and Down keys for three seconds Ai will appear in the upper display and oPEr will appear in the lower display Operations Page Analog Input 1 Parameter Prompt Value Process Value Ain current temperature Error Status I Er current status Calibration Offset i CA 0 0 C offset as required to meet accuracy spec Operations ...

Страница 35: ...of any alleged defect within 10 days after its discovery within the warranty period This limited warranty does not cover 1 Defects or damages arising as the result of shipment by common carriers or private transportation unless TestEquity undertakes shipment and transportation of the Equipment to Purchaser s site or contractually assumes the risk of damage to the Equipment in shipment 2 Defects or...

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Страница 37: ...Chapter 10 Drawings TestEquity TEC1 Thermoelectric Temperature Chamber Page 9 1 Chapter 9 Drawing ...

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