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TestEquity 115A Operation And Service Manual
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TestEquity 115A 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
Copyright © 2012-2018 TestEquity LLC
Model 115A
Temperature Chamber
Rev. 3.2 – January 8, 2018

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Summary of Contents for TestEquity 115A

  • Page 1 Model 115A Temperature Chamber 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 © 2012-2018 TestEquity LLC Rev. 3.2 – January 8, 2018...
  • Page 3 Adjusting the Purge Flow ________________________________________________________________ 5-2 Relief Vent ___________________________________________________________________________ 5-2 Chapter 6 – Frequently Asked Questions ________________________________________ 6-1 Chapter 7 – Specifications ____________________________________________________ 7-1 Model 115A Chamber Specifications ________________________________________________ 7-1 Chapter 8 – Maintenance _____________________________________________________ 8-1 Preventive Maintenance Intervals __________________________________________________ 8-1 Maintenance Procedures __________________________________________________________ 8-2...
  • Page 4 Table of Contents Theory of Operation ______________________________________________________________ 8-5 Overview _____________________________________________________________________________ 8-5 Heating System ________________________________________________________________________ 8-5 Refrigeration System ____________________________________________________________________ 8-5 Troubleshooting _________________________________________________________________ 8-7 Refrigeration System Charging Instructions __________________________________________ 8-8 R-404A High-Stage Charge ______________________________________________________________ 8-8 R-508B Low-Stage Charge _______________________________________________________________ 8-8 Recommended Spare Parts ________________________________________________________ 8-9 Major Electrical Parts __________________________________________________________________ 8-10 Major Refrigeration Parts _______________________________________________________________ 8-10 General Parts _________________________________________________________________________ 8-10...
  • Page 5 ! CAUTION: The Temperature Controller’s “Alarm” functions are NOT used in the chamber’s safety system and are NOT connected. TestEquity does NOT recommend using the Temperature Controller’s alarm function as the main protection device. The independent EZ-Zone Limit Controller functions as the main protection device.
  • Page 6 You are responsible for providing thermal protection devices to your test sample. ! CAUTION: To prevent damage to your test sample and the chamber’s compressor, do not exceed the live load rating of the chamber. Page 1-2 TestEquity 115A Temperature Chamber...
  • Page 7 4. Remove the front and one side 2x4 retainer from the base of the pallet. 5. Remove the foam inserts from the base of the pallet. 6. Carefully roll (for model 115A-F) and/or lift the chamber off the pallet. This should be done with at least four people.
  • Page 8 If you reverse the door, see “How to inspect the door seal” in the Maintenance chapter of this manual to make sure the hinges and door latch are adjusted correctly. Page 2-2 TestEquity 115A Temperature Chamber...
  • Page 9 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 EVENT 1 on the F4 controller or the Power button on the F4T controller ON. TestEquity 115A Temperature Chamber Page 3-1...
  • Page 10 The COOL Light will illuminate when the Temperature Controller turns on the cooling 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 115A Temperature Chamber...
  • Page 11 Foam port plugs are provided with a gray silicone surface on one side. The port plug must be inserted with the gray silicone surface facing the inside of the chamber. Port plugs should be considered expendable and be replaced when they no longer provide a good seal. TestEquity 115A Temperature Chamber Page 3-3...
  • Page 12 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 115A Temperature Chamber...
  • Page 13 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 14 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 115A Temperature Chamber...
  • Page 15 Compressed Air Inlet to Dry Air System. Shutoff valve on the Dry Air System is shown in the off position. Valve must be in the on position to operate. Figure 5-1 – Dry Air Purge System Installation (typical) TestEquity 115A Temperature Chamber Page 5-1...
  • Page 16 A suggested starting setting is 2 SCFM. Relief Vent Excess pressure in the chamber workspace is vented through a pressure-relief check-valve, which is located within the electrical compartment. There is no need to vent this externally. Page 5-2 TestEquity 115A Temperature Chamber...
  • Page 17 50 Hz rating of 100 V nominal (95 V min. to 110 V max.). We do make a special export version for this purpose, model 115A-EX. It has 230 V, 50 Hz compressors and an internal step-down transformer for the heater and control circuitry.
  • Page 18 I haven’t used the chamber for a while. Is there anything I should do to prepare it for operation? Perform ALL the steps in the Preventive Maintenance Schedule before placing the chamber back into service. This will ensure that nothing has been damaged and that a leak has not developed. Page 6-2 TestEquity 115A Temperature Chamber...
  • Page 19 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 21 3" Port on left and right side (two total), Supplied with foam plugs Weight 115A-B: Bench Version, 260 pounds. 115A-F: Floor Version, 300 pounds. Sound Level 52 dBA in cooling mode (A-weighted, measured 36" from the front surface, 63" from the floor, in a free-standing environment) NOTE: Performance is typical and based on operation at 23°C (73°F) ambient and nominal input voltage.
  • Page 23 • Listen for abnormal noise or vibration. Every 6 Months • Inspect the door seal. • Clean the condenser. • Inspect the electrical and refrigeration machinery compartments. • Verify the chamber performance. Every 12 Months • Verify the calibration. TestEquity 115A Temperature Chamber Page 8-1...
  • Page 24 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. Page 8-2 TestEquity 115A Temperature Chamber...
  • Page 25 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 26 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 –74°C. The ambient temperature must be approximately 23°C for the cool down times to be valid.
  • Page 27 The compressor takes the low pressure vapor and compresses it, increasing both the pressure and the temperature. The hot, high pressure vapor is forced out the compressor discharge valve and into the desuperheater. The finned coil TestEquity 115A Temperature Chamber Page 8-5...
  • Page 28 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. Page 8-6 TestEquity 115A Temperature Chamber...
  • Page 29 If compressor control parameters Solenoid valve SV2 may be in temperature controller are defective (does not completely correct. seal when cycled off). Figure 8-1 – PS2 Pressure Switch Reset Button (lower rear panel removed) TestEquity 115A Temperature Chamber Page 8-7...
  • Page 30 Do NOT substitute any component. Do NOT substitute refrigerants. Improper repairs will void the warranty. These instructions are intended as guidelines for repairing TestEquity chambers. Details such as how to attach a gauge manifold are not covered. These are NOT do-it-yourself instructions! R-404A High-Stage Charge 1.
  • Page 31 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 32 Solenoid Valve Coil Sporlan MKC-1-120/50-60 21 (SV1, 2) 100011 General Parts Description Mfr Part No. Ref # Part # Qty UOM Caster, Fixed (for 115A-F) Trio Pines 2521-02P 300610 Caster, Swivel (for 115A-F) Trio Pines 2520-02P-SB 300609 Door Gasket, Inner CUSTOM...
  • Page 33 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 35 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 37 Chapter 10 – Drawings...