TestEquity 140 Operation And Service Manual

Temperature chamber

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Operation and Service Manual

TestEquity LLC

6100 Condor Drive

Moorpark, CA 93021

Support:

877-512-3457 Toll Free

805-480-0638

Corporate:

800-732-3457

805-498-9933

http://www.testequity.com

Model 140

Temperature Chamber

(Serial Number 140480 and above)

Rev. 2.3 – October 10, 2019

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Page 1 Model 140 Temperature Chamber (Serial Number 140480 and above) Operation and Service Manual TestEquity LLC 6100 Condor Drive Moorpark, CA 93021 Support: 877-512-3457 Toll Free 805-480-0638 Corporate: 800-732-3457 805-498-9933 http://www.testequity.com Copyright © 2007-2019 TestEquity LLC Rev. 2.3 – October 10, 2019...
Page 3: Table Of Contents
Dry Air Installation (Option TE-0035) ______________________________________________________ 5-1 Purge Operation _______________________________________________________________________ 5-1 Adjusting the Purge Flow ________________________________________________________________ 5-1 Relief Vent ___________________________________________________________________________ 5-1 Chapter 6 – Frequently Asked Questions ________________________________________ 6-1 Chapter 7 – Specifications ____________________________________________________ 7-1 Model 140 Chamber Specifications __________________________________________________ 7-1...
Page 4 Table of Contents Chapter 8 – Maintenance _____________________________________________________ 8-1 Preventive Maintenance Intervals __________________________________________________ 8-1 Maintenance Procedures __________________________________________________________ 8-2 How to clean the chamber interior and exterior. _______________________________________________ 8-2 How to listen for abnormal noise or vibration. ________________________________________________ 8-2 How to inspect the door seal. _____________________________________________________________ 8-2 How to inspect the refrigeration machinery compartment.
Page 5: Chapter 1 - Safety Instructions
DO NOT defeat the ground feature. This device MUST be plugged DIRECTLY into a properly grounded NEMA L6-30R receptacle. Due to high current demand on start-up, use of an extension cord is NOT recommended. TestEquity 140 Temperature Chamber Page 1-1...
Page 6: Operation Safety Notices
The independent EZ-Zone Limit Controller functions as the main protection device. ! CAUTION: The EZ-Zone Limit Controller has been properly configured by TestEquity to match the chamber’s system requirements. Improper modifications to these setup values can result in unreliable and unsafe operation. Do not attempt to modify the setup values, unless you thoroughly understand what you are doing.
Page 7 ! WARNING: This chamber operates at extreme temperatures. Avoid contact with air, objects, and surfaces that are hot or cold to prevent severe burns or frostbite. Protective gloves are recommended. TestEquity 140 Temperature Chamber Page 1-3...
Page 9: Chapter 2 - Installation
Chapter 2 – Installation Uncrating Inspect the shipping container for any signs of visible damage. Notify the carrier and TestEquity immediately if there are signs of shipping damage. The pallet is designed with ramps so the chamber can be rolled off without the need for a forklift or pallet jack.
Page 10: Installation Location
You can purchase a condensate pump from suppliers such as Grainger (www.grainger.com). Under most circumstances, you will not see any water coming out of the drain. Page 2-2 TestEquity 140 Temperature Chamber...
Page 11: Input Power Configuration
±10% is present. Operation below 198 V or greater than 253 V requires internal transformers, which can be supplied for a nominal charge. Control Transformer Figure 2-1 – Location of Input Configuration Terminals on the Electrical Sub Panel TestEquity 140 Temperature Chamber Page 2-3...
Page 12: Voltage Configuration
DO NOT defeat the ground feature. This device MUST be plugged DIRECTLY into a properly grounded NEMA L6-30R receptacle. Due to high current demand on start-up, use of an extension cord is NOT recommended. Page 2-4 TestEquity 140 Temperature Chamber...
Page 13: Chapter 3 - Operation
4. Load your test sample in the chamber. 5. Turn the CONDITIONING Switch ON. Alternatively, turn the CONDITIONING Switch to the EVENT 1 position and turn Power button on the F4T controller ON or EVENT 1 on the F4 controller ON. TestEquity 140 Temperature Chamber Page 3-1...
Page 14: Front Panel Switches And Lights
The COOL Light will illuminate when the Temperature Controller turns on the cooling solenoid valve to maintain the workspace temperature. The COOL Light will cycle on/off as the workspace temperature approaches and reaches the temperature set point. Page 3-2 TestEquity 140 Temperature Chamber...
Page 15: Loading The Chamber
Limit Controller’s temperature limits are exceeded. ! CAUTION: To prevent damage to your test sample and the chamber’s compressors, do not exceed the live load rating of the chamber. Live Load Capacity for Model 140 Temp +23°C 0°C –40°C...
Page 16: Performance Considerations
Make sure that all connectors, wiring, pc boards, and auxiliary components can withstand the temperature extremes that they will be subjected to. In some cases, these components may not be able to last after repeated tests and should be considered expendable. Page 3-4 TestEquity 140 Temperature Chamber...
Page 17: Chapter 4 - Limit Controller
Not all features or functions are applicable. Only the capabilities of a model PM6L1AJ-AAAABAA are applicable. ! CAUTION: The EZ-Zone Limit Controller has been properly configured by TestEquity to match the chamber’s system requirements. Improper modifications to these setup values can result in unreliable and unsafe operation. Do not attempt to modify the setup values, unless you thoroughly understand what you are doing.
Page 18: Limit Controller Keys And Displays
Then, you must press the RESET or EZ Key to resume normal operation. Silencing the Audible Alarm Turning off the TEMP switch on the chamber front panel lets you temporarily turn off the Audible Alarm, even though the High or Low Limit condition may still exist. Page 4-2 TestEquity 140 Temperature Chamber...
Page 19: Protecting An Energized Test Sample
Connections to the safety contacts are at terminals 6 and 8 on the relay socket. 4. Put the relay back in the socket and replace the top covers. Figure 4-2 – Location of Safety Contact Connections on the Electrical Sub Panel TestEquity 140 Temperature Chamber Page 4-3...
Page 21: Chapter 5 - Purge
Excess pressure in the chamber workspace is vented through a pressure-relief check-valve, which is located on the top of the chamber under the electrical compartment cover. There is no need to vent this externally. TestEquity 140 Temperature Chamber Page 5-1...
Page 23: Chapter 6 - Frequently Asked Questions
50 Hz rating of 200 V. These transformers are available from TestEquity for a reasonable cost. Note that the cooling performance will be reduced by 17% at 50 Hz. Please call TestEquity for details on reconfiguring for 50 Hz operation.
Page 24 Thermocouple wire accuracy is ±1°C or 0.75% of reading, whichever is greater. Therefore, total system accuracy over the chamber’s operating range can be as much as ±2.66°C, although the typical accuracy is often better than ±1.0°C. Page 6-2 TestEquity 140 Temperature Chamber...
Page 25 Can/Should I put a filter in front of the condenser air inlet? No, TestEquity does not recommend this. Just follow the maintenance procedures and clean the condenser fins periodically.
Page 27: Chapter 7 - Specifications
Chapter 7 – Specifications Chapter 7 – Specifications Model 140 Chamber Specifications Temperature Range –73°C to +175°C Control Tolerance ±0.5°C (±0.2°C Typical) (Measured at the control sensor after stabilization) Uniformity ±0.5°C (Variations throughout the chamber after stabilization) Live Load Capacity @ +23°C...
Page 29: Chapter 8 - Maintenance
• Inspect the door seal. • Inspect the refrigeration machinery compartment. • Verify the chamber performance. Every 6 Months • Inspect the electrical compartment. • Clean the condenser. Every 12 Months • Verify the calibration. TestEquity 140 Temperature Chamber Page 8-1...
Page 30: Maintenance Procedures
• If the seal is still loose on the hinge side, adjust the door hinge. The hinges have slotted holes (on the door side) to permit adjustment. Page 8-2 TestEquity 140 Temperature Chamber...
Page 31: How To Inspect The Refrigeration Machinery Compartment
NOTE: You may need to clean the condenser more frequently if the chamber is in a dusty environment. You may be able to clean the condenser less frequently if the chamber is in a very clean environment. TestEquity 140 Temperature Chamber Page 8-3...
Page 32: How To Verify The Chamber Performance
These tests assume that the Temperature Controller’s setup and tuning values have not been changed from the values as shipped from TestEquity. Also, the Limit Controller high limit must be set to over +85°C (+88°C would be fine), and the low limit set to –75°C.
Page 33: How To Verify The Calibration
TestEquity recommends verifying the calibration before attempting to actually perform a calibration. The state-of-the-art instrumentation used in TestEquity chambers is of the highest quality and seldom goes out of calibration. If you try to calibrate the instrumentation before determining that calibration is necessary, you may make it worse if done incorrectly.
Page 34: Theory Of Operation
As the high pressure vapor passes through the condenser, it is cooled by a fan, which blows ambient air across the finned condenser surface. The vapor condenses into a liquid and the cycle is repeated. Page 8-6 TestEquity 140 Temperature Chamber...
Page 35 The low-stage compressor turns on 30 seconds after the high-stage turns on through Timing Module TM1. This reduces the system’s starting current, while allowing the cascade condenser to get cool before the low-stage turns on. TestEquity 140 Temperature Chamber Page 8-7...
Page 36: Troubleshooting
Defective condenser fan motor. R-508B pressure switch Trips when the cool light cycles R-508B hot gas bypass to OFF. regulator may be defective or DPS2 trips. set too low. Page 8-8 TestEquity 140 Temperature Chamber...
Page 37 Chamber has been off for R-404A crankcase heater several hours or more, and is defective (open). connected to source of power and main disconnect switch is on during that time. TestEquity 140 Temperature Chamber Page 8-9...
Page 38: Refrigeration System Charging Instructions
These are NOT do-it-yourself instructions! R-404A High-Stage Charge TestEquity does NOT recommend charging the system by relying on a clear sight glass only. Although a clear sight glass generally means the system is fully charged, it can be misleading.
Page 39: Recommended Spare Parts
Chapter 8 – Maintenance Recommended Spare Parts Replacement parts are available from TestEquity. Parts are generally in-stock and ready for immediate shipment. Next-day delivery is always available. If you cannot risk being out of service for even one day, then you should purchase critical spare parts in advance. Although most parts are standard and available from a variety of local distributors, some parts are either harder to find or custom.
Page 40: Major Electrical Parts
200301 Timing Module Airotronics THCU30SC 200287 Control Transformer Hammond PT150ML1 200248 60 Hz Low or High Line Option Transformer Acme Electric T-1-81050 TR2, 3 200060 50 Hz Option Transformer Hammond QC50ESCB TR2, 3 200124 Page 8-12 TestEquity 140 Temperature Chamber...
Page 41: Major Refrigeration Parts
Door Latch, Chamber Workspace Southco A2-10-501-21 300009 Port Plug, Silicone Foam, 4" CUSTOM CUSTOM 300534 Shelf Retainer Clip (only) Kason Style 66, #0066000008 300015 Shelf with 4 Clips CUSTOM CUSTOM TE-1401 Viewing Window CUSTOM CUSTOM 300692 TestEquity 140 Temperature Chamber Page 8-13...
Page 42: Ez-Zone Limit Controller Setup Parameters
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. Setup Menu Prompt...
Page 43: Chapter 9 - Warranty
If the repair or replacement is performed in the FIRST YEAR from the date of invoice, TestEquity will also pay for the labor associated with the repair at the Purchaser’s site, subject to TestEquity’s prior approval. During the SECOND and THIRD YEAR of the warranty period, Purchaser will be responsible for the installation and cost of installation of replacement or repaired parts.
Page 45: Chapter 10 - Drawings
Chapter 11 – Drawings Chapter 10 – Drawings TestEquity 140 Temperature Chamber Page 10-1...
Page 47 Electrical Subpanel Component Location Control Transformer F1 F2 F3 F4 F5 F6 F7 F8 SSR1 SSR2 SSR3 Fuses Fuse Type Function F1,2 FNQ-R-2 Control Transformer Primary F3,4 FNQ-R-15 Heater, Circulator Fan F5-6 LP-CC-15 R-404A Compressor F7-8 LP-CC-15 R-508B Compressor FNM-2 Control Transformer Secondary MDL-3/10 Solenoid Coil...

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140480