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Environmental Test Chamber
OPERATION & MAINTENANCE MANUAL
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Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4
Advanced Test Equipment Rentals
www.atecorp.com 800-404-ATEC (2832)
Tenney Junior
The Tenney Junior Family
Model No. TJR,
Chamber Type: Temperature
Controller: Watlow 942
CHAMBER OPTIONS
TempGard IV - Watlow 93
Boost Heat - Watlow 147
LN2 Boost Cooling
CO2 Boost Cooling
Dry Air Purge
TPS - Thermal Product Solutions
2121 Reach Road
Williamsport, PA 17701
570-326-1770 Fax: 570-326-7304
TENNEY ENVIRONMENTAL
Serial No. 3xxxx
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GN2 Purge
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Data Communications
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LinkTenn32 Software
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Chart Recorder
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Alternate Controller - Watlow F4
Rev. 04/30/04
Page 1
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Table of Contents
Summary of Contents for Tenney TJR
- Page 1 CO2 Boost Cooling Chart Recorder Dry Air Purge Alternate Controller - Watlow F4 TPS - Thermal Product Solutions 2121 Reach Road Williamsport, PA 17701 570-326-1770 Fax: 570-326-7304 Rev. 04/30/04 Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 1...
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Page 2: Table Of Contents
Watlow 942 Control Functions _______________________________________________ 18,19 Watlow F4 Control Functions (Alternate Controller) _______________________________ 19 HEATING DESCRIPTION ___________________________________________________ 20 CHAMBER OVERTEMPERATURE PROTECTION _______________________________ 20-22 10.0 CASCADE REFRIGERATION SYSTEM ________________________________________ 23,24 Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 2... - Page 3 11.0 ALARM and SHUTDOWN CIRCUIT - TempGard IV (Optional) 11.1 System Description ________________________________________________________ 25 11.2 Special Hookup of TempGard IV for Model TJR ONLY _____________________________ 26 11.3 Circuit Operation __________________________________________________________ 27 11.4 TempGard IV Alarm Setpoint Entry ____________________________________________ 28 12.0 BOOST HEAT (Optional) __________________________________________________ 29 13.0...
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Page 4: Company Information & Assistance
Tenney Environmental - - - - - - Lunaire Environmental - - - - - - Gruenberg Oven - - - - - - Blue M Parts and service inquiries for equipment within each division should be directed to Lunaire Limited by any of the following methods. -
Page 5: Safety Warnings & Symbols
Do not modify any component on this unit. Use only original equipment manufactured (OEM) parts as replacement parts. Modifications to any component, or the use of a non-OEM replacement part could cause damage to your equipment, personal injury, or death. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 5... - Page 6 Do not remove any labels mounted on the equipment. “WARNING OF HAZARDOUS AREA” “WARNING OF DANGEROUS ELECTRIC VOLTAGE” “WARNING OF HOT SURFACE” “EARTH (GROUND) PROTECTIVE CONDUCTOR TERMINAL” Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 6...
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Page 7: Product Specifications & Overview
An RTD sensor is used for temperature measurement. Dual outputs are configured in the time proportioned, On/Off, or switched dc modes. Two optional auxiliary outputs can be set up as alarms, or Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 7... - Page 8 These devices are configured in a comprehensive alarm and shutdown circuit. Additional Options: Your Tenney chamber may include many other options such as boost heating, boost cooling using LN2 or CO2, a purge air system using compressed air or GN2, a chart recorder, and LinkTenn32 software.
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Page 9: Drawings, Information, And Vendor Instruction Listings
Data Communications Manual (W942 - Data Com. is separate, WF4 - Data Com. is integrated in main mnl.) LinkTenn32 Software Watlow 93 Controller Manual (TempGard IV Feature) Watlow 147 Limit Controller Manual Chart Recorder Manual Heatless Dryer Manual (with dry air purge option) Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 9... -
Page 10: Installation Instructions
♦ Do not position the chamber in a manner that would make it difficult to operate your main power disconnect switch. See “Power Connection” below. ♦ Make sure the chamber is leveled when set up. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 10... -
Page 11: Air Supply Connection
Access Port GN2 Supply Connection 1/8” NPT Flow Adjustment: Metering Valve Adjust the metering valve to maintain approximately 300 cubic feet per hour. GN2 Purge System Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 11... -
Page 12: Ln2 Connection
CO2 Supply Connection Note: Your equipment configuration may be slightly different from what is shown. CO2 Boost Cooling Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 12... -
Page 13: Electrical Specifications
Supply to the system's motors. For CE European Marked Chambers Only: Chamber Fuse Type and Rating 1FU (Qty. 1) Gould Model GDG1/2 .5 A, 250 VAC Time-Lag Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 13... -
Page 14: Application Of Power
Master Contactor (CON) from the TempGard IV circuitry. This is described in the Alarm And Shutdown Circuit section. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 14... -
Page 15: Air Circulation System
TENNEY ENVIRONMENTAL AIR CIRCULATION SYSTEM Tenney Junior Test Chambers are provided with an efficient airflow system that maintains maximum temperature uniformity. Plenum Heaters & Refrigeration Coil Circulation Fan & Guard Temperature Sensor - TUJR Location Air Circulation Air Circulation Chamber air is conditioned in the ceiling plenum where the circulation fan, heater elements, and refrigeration coil are located. -
Page 16: Temperature Control
♦ 2 Control Outputs: Time Proportioned, On/Off, or 4-20 ma ♦ 2 Alarm Outputs ♦ 8 Digital Event Outputs ♦ 2 Retransmit Outputs - Optional ♦ Communications: EIA-232 and EIA-485 with Modbus RTU protocol Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 16... - Page 17 Changes to some of the set-up parameters may drastically affect your chamber performance and void your warranty. Contact the Lunaire Service Dept. before attempting any changes. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 17...
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Page 18: Watlow 942 Control Functions
♦ Measured temperature falls below setpoint: Turn-on is always above setpoint. ♦ Turn-off is always below setpoint: Turn-on is always above setpoint. Example Settings For HYS and db: See Next Page Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 18... -
Page 19: Watlow F4 Control Functions (Alternate Controller)
Page, and press the Right Key again. A pop-up message confirms the alarm is unlatched. Cascade Temperature Control (Optional): Note: Tenney chambers are set up to run in the “No Cascade” mode because of the many variations in customer products that require special tuning with this option. -
Page 20: Heating Description
147 Limit Controller for overtemperature protection. Reference the “Boost Heat” option section for details. Thermal Cutoff Thermal Cutoff is installed in the Neutral Line, and is wrapped in glass cloth electrical tape. Heater Element Rack Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 20... - Page 21 Be careful not to hit the fan blade or the RTD probe when dropping the cover down. Screws Note: In this photo, the RTD probe is not pushed in. Plenum Cover Removal Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 21...
- Page 22 Thermal Cutoff Removal As you install the new thermal cutoff and put the plenum back together, take great care in your replacement procedure! Make sure all connections are secure! Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 22...
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Page 23: Cascade Refrigeration System
The desuperheater is part of the high stage air cooled condenser. As a cooled gas, it then flows to the cascade condenser where it condenses to Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 23... - Page 24 NOTE: Please reference the section entitled “Servicing Cascade Refrigeration Systems” for a more detailed description. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 24...
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Page 25: Alarm And Shutdown Circuit - Tempgard Iv (Optional)
In the Model TJR, the TempGard IV feature is enclosed in a separate control box and is mounted on top of the unit. For shipping purposes, the TempGard control box is removed from the top of the unit and placed inside the chamber workspace. -
Page 26: Special Hookup Of Tempgard Iv For Model Tjr Only
TempGard IV / Chamber Power Supply Configuration: Connect the TGIV power supply cord to your power supply receptacle. Connect the chamber power supply cord to the receptacle on the back of the TGIV enclosure. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 26... -
Page 27: Circuit Operation
The configuration for the TempGard IV option is detailed in the section entitled “TempGard IV Alarm Setpoint Entry”, which follows. Reference the Watlow 93 user manual for complete details of the controller. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 27... -
Page 28: Tempgard Iv Alarm Setpoint Entry
Important: When the alarm condition has cleared, the TGIV alarm will automatically reset. You must then reset the chamber control circuitry by pressing the chamber Reset button. For Models TJR / TUJR only, cycle the Chamber Power switch. These switches are on the TGIV panel. -
Page 29: Boost Heat (Optional)
When the Watlow 147 detects an overtemperature condition, 1TS will open to deenergize BHCON and all heaters. Reference the Boost Heat Electrical Schematic for more details. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 29... -
Page 30: Dry Air Purge System (Optional)
When the system is activated, both the dryer and the Dry Air solenoid valve ASOL will energize. Note: Your equipment configuration may be slightly different from what is shown. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 30... -
Page 31: Gn2 Purge Air System (Optional)
The valve should be adjusted until the indicated flow is about 300 cubic feet per hour. Note: Your equipment configuration may be slightly different from what is shown. GN2 Purge System Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 31... -
Page 32: Ln2 Boost Cooling System (Optional)
Cooling output turns off, the timer output will open to deenergize SOL and shut off the flow of LN2. Note: Your equipment configuration may be slightly different from what is shown. LN2 Boost Cooling Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 32... -
Page 33: Co2 Boost Cooling System (Optional)
SOL and shut off the flow of CO2. Note: Your equipment configuration may be slightly different from what is shown. CO2 Boost Cooling Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 33... -
Page 34: Linktenn32 Software (Optional)
♦ One 10/100 Ethernet card using TCP/IP (Optional) ♦ Printer (Optional) ♦ Fax Modem (Optional) Example Screens: LinkTenn32 Sample Graph Screen - 2 Channel LinkTenn32 - 2 Channel VersaTenn III Screen Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 34... -
Page 35: Chart Recorder (Optional)
The recorder configuration is documented in the Test Report, which is located in the Supplemental Instructions Section. Reference the recorder’s user manual for a detailed operation of the unit. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 35... -
Page 36: Sequence Of Operation
Chambers With Watlow 93 TempGard IV Option: For Model TJR Only: After mounting the TempGard IV box on top of the chamber Make sure you have connected the RTD wires to the Watlow 93 Controller and have reinstalled the top enclosure to the TempGard IV unit. - Page 37 Important Note! For complete programming and/or operating instructions on any of the controllers, electrical / mechanical components, or optional equipment, you must refer to their operating manuals included with your Tenney Environmental manual. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 37...
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Page 38: Preventative Maintenance
Period: approx. every 6 months. Only after disconnecting all power to the chamber, clean the evaporator coil in the chamber conditioning plenum. Period: approx. every 6 months. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 38... - Page 39 / mechanical machinery and motors, you must refer to their operating manuals included with your Tenney, or Lunaire Environmental manual. The smaller manuals and vendor cut-sheets are located in the Supplemental Instructions Section.
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Page 40: Servicing Cascade Refrigeration Systems
Leaving the de-superheater, the gas passes through an oil separator and flows to the cascade condenser. Here it is liquefied by heat exchange with high stage refrigerant and flows to the expansion valve. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 40... - Page 41 It is metered through a capillary tube, regulating the rate of gas entry into the system. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 41...
- Page 42 The ordinary compound refrigeration gauge is inadequate, however a thermocouple gauge is ideal. Evacuating a leaky system is an exercise in futility. Therefore, make sure the system is absolutely tight before beginning evacuation. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 42...
- Page 43 Disconnect the cylinder immediately when charging is complete. A leaky cylinder valve could continue to bleed high pressure refrigerant into the system, possibly causing it to rupture. Do not take chances. The saturation pressures of low temperature refrigerants are extremely high. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 43...
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Page 44: Chamber Troubleshooting Guide
The information here should also help you in localizing trouble so that you can better describe the malfunction when contacting the Tenney Service Department. Refer to the appropriate electrical and refrigeration drawings when using these troubleshooting suggestions. - Page 45 Remember that the compressors have internal overloads with automatic reset; these are in addition to circuit breakers. Therefore, when a compressor cuts out, it must be given time to cool so that its internal protector has time to reset. Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 45...
- Page 46 TENNEY ENVIRONMENTAL SUPPLEMENTAL INSTRUCTIONS Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4 Page 46...
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