Table of Contents
Advertisement
Quick Links
Temperature/Humidity Chamber
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 © 2017 TestEquity LLC
Portions of this manual are used with permission from Watlow Electric Manufacturing Company, 2014-17
Model 101H
Rev. 1.6 – November 8, 2017
Advertisement
Table of Contents
Related Manuals for TestEquity 101H
Summary of Contents for TestEquity 101H
- Page 1 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 © 2017 TestEquity LLC Rev. 1.6 – November 8, 2017 Portions of this manual are used with permission from Watlow Electric Manufacturing Company, 2014-17...
-
Page 3: Table Of Contents
Table of Contents Chapter 1 – Safety Instructions ....................7 Introduction ______________________________________________________________________________ 7 Installation Safety Notices ___________________________________________________________________ 7 Operation Safety Notices ____________________________________________________________________ 8 Chapter 2 – Installation ........................ 9 Unpacking ________________________________________________________________________________ 9 Preparation For Use _______________________________________________________________________ 9 Installation Location _______________________________________________________________________ 9 Humidity Water System ___________________________________________________________________ 10 Water Fill (when no plumbing is used) ...................... - Page 4 Table of Contents Profile Mode _____________________________________________________________________________ 27 Profile Actions ..............................27 Profile Parameters .............................. 28 Step Parameters ..............................28 Sample Ramp and Soak Profile .......................... 31 Data Logging ____________________________________________________________________________ 33 Overview ................................33 Data Logging Menu ............................33 How to Enable Data Logging ..........................34 Transferring Data Log Files ..........................
- Page 5 Table of Contents Chapter 6 – Communications ....................57 Ethernet Parameters ______________________________________________________________________ 57 Changing Ethernet Parameters ........................... 57 Ethernet Parameters and Settings ........................57 RS-232 Parameters _______________________________________________________________________ 58 Changing RS-232 Parameters ..........................58 RS-232 Parameters and Settings ........................58 Modbus _________________________________________________________________________________ 59 Introduction to the Modbus Protocol .........................
-
Page 7: Chapter 1 - Safety Instructions
12" from the rear of the chamber. ! CAUTION: This chamber is designed for operation in a conditioned laboratory environment. Operation above 30°C (85°F) or below 16°C (60°F) ambient room temperature is NOT recommended. TestEquity 101H Temperature/Humidity Chamber Page 7... -
Page 8: Operation Safety Notices
Chapter 1 – Safety Operation Safety Notices ! CAUTION: The F4T Controller has been properly configured by TestEquity to match the chamber’s system 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. -
Page 9: Chapter 2 - Installation
Chapter 2 – Installation Chapter 2 – Installation Unpacking Inspect the shipping container for any signs of visible damage. Notify the carrier and TestEquity immediately if there are signs of shipping damage. 1. Cut the bands that hold the packaging together. -
Page 10: Humidity Water System
Water does not come out of this drain during normal chamber operation, even with a plumbed water supply. See “How to drain the reservoir” in the Maintenance section of this manual for more details. Page 10 TestEquity 101H Temperature/Humidity Chamber... -
Page 11: Water Recirculation System Filter Cartridge
The Deionizer filter cartridge must be replaced when it is used up. The color of the top half of the cartridge changes gradually from white to brown through continued use. Replacement cartridges are available from TestEquity (our part number 383911). -
Page 13: Chapter 3 - Operation
ON when needed and then turn it OFF when operating the chamber at temperatures over 50°C (122°F). This is because the exterior surface of the door tends to get very warm which elevates the temperature of the LED light bar. TestEquity 101H Temperature/Humidity Chamber Page 13... -
Page 14: Loading The Chamber
! CAUTION: To prevent damage to your test sample and the chamber’s compressor, do not exceed the live load rating of the chamber. Live Load Capacity for Model 101H (uncontrolled humidity mode only) Temp +23°C 0°C –5°C –10°C... -
Page 15: Performance Considerations
Aluminum may be used. However, since the specific heat of aluminum is double that of steel, it represents a greater load and will have more impact on the chamber performance. TestEquity 101H Temperature/Humidity Chamber Page 15... -
Page 16: Humidity Operation
If the chamber is outside the temperature range or +7°C and +90°C, the humidity system will be disabled and chamber will operate as though the F4T Humidity button was OFF, even if Humidity button is ON. Page 16 TestEquity 101H Temperature/Humidity Chamber... -
Page 17: Purge (Optional)
Air Drier mounted on the 101H-F caster base. TE-0017 has the air drier mounted on its own caster base for use with the 101H-B. Connect the hose from the Air Drier to the PURGE INLET fitting on the rear panel. Connect the power plug from Air Direr to DRY AIR POWER receptacle on the rear panel. -
Page 18: Purge Operation
3 SCFM. Relief Vent Excess pressure in the chamber workspace is vented through a pressure-relief check-valve which is located behind the panel of the rear compartment. There is no need to vent this externally. Page 18 TestEquity 101H Temperature/Humidity Chamber... -
Page 19: Chapter 4 - F4T Temperature/Humidity Controller
This chapter is designed to give you a better understanding of the structure and navigation of the F4T menus as viewed from the front panel. Understanding F4T Menus The graphic below illustrates at a high level the structure of the F4T menus. TestEquity 101H Temperature/Humidity Chamber Page 19... -
Page 20: Navigating And Understanding The User Interface
(see “Personalizing the Home Screen” section). Model 101H is configured by TestEquity to have three screens. The first one shows Temperature and Humidity (as pictured above). The second one shows Temperature Only. -
Page 21: Home Screen Parameters
• Personalize: The home screen layout is modified in this menu. This has been configured by TestEquity to only show if a user is logged in with a password. • Help: (not shown, appears when display is scrolled down in this pictured configuration) Displays information about the controller such as part number and software revision. -
Page 22: Chamber Functions (Output Widget)
ON/OFF in Static Set Point (manual) mode or while a profile is running. The image below shows an F4T with Power, Humidity, and Purge in the output widget. Below is a summary of the button functions assigned by TestEquity. Power Button The Power button on the F4T Controller turns the chamber ON/OFF. -
Page 23: Static (Manual) Set Point
F4T Controller is in Static Set Point Mode when it is not controlling a Profile. The Static Set Point is entered in the Closed-Loop Set Point screen. Model 101H is configured by TestEquity to have 3 screens. The first one shows Temperature and Humidity. The second one shows Temperature only. The third one shows Humidity only. -
Page 24: Ramp To Set Point
Set how quickly the set point ramps. Set the time units for the rate with Ramp Rate. (Ramp Rate will not show if Ramp Action is set to Off) • 0 to 55,555 (ºC) or 0 to 99,999 (ºF) per minute or hour Page 24 TestEquity 101H Temperature/Humidity Chamber... -
Page 25: Temperature Limit Alarm
The screen which follows will provide access to the Low Limit Set Point and High Limit Set Point. Pressing the Low Limit or High Limit Set Point value will take you to a numeric key screen where you can enter new values. Press Done after the values are entered. TestEquity 101H Temperature/Humidity Chamber Page 25... -
Page 26: Resetting An Out Of Limit Condition
Do not use unfiltered tap water! Do not use lab-grade double-distilled water! The alarm will self-reset and the status bar will stop blinking when the water level within normal limits. Page 26 TestEquity 101H Temperature/Humidity Chamber... -
Page 27: Profile Mode
Stop running a profile, profile cannot resume running, it must be started Terminate again. View/Edit Profile Events View and edit profile events. Go to Profile Brings up a list of profiles by name for selection. Cancel Return to Home screen. TestEquity 101H Temperature/Humidity Chamber Page 27... -
Page 28: Profile Parameters
Actions button will allow you to Edit Step Parameters, Delete Step, or Insert Step. Each new step will automatically be a copy of the previous step. You can then edit the parameters of the new step to suit your profile. Page 28 TestEquity 101H Temperature/Humidity Chamber... - Page 29 • Hours, Minutes, Seconds (How long the step will hold at this condition) • Guaranteed Soak Enable 1 (Temperature) • Target Set Point Loop 2 (Humidity) • Guaranteed Soak Enable 2 (Humidity) • Power, Humidity, Purge, Event 4 through 8 (On, Of, Unchanged from previous step) TestEquity 101H Temperature/Humidity Chamber Page 29...
- Page 30 Static (Manual) Set Point. You would need to enter the Loop Menu and change Control Mode to Auto. See “Changing Loop Operational Parameters” for information on how to access this menu. Page 30 TestEquity 101H Temperature/Humidity Chamber...
-
Page 31: Sample Ramp And Soak Profile
Enter 1 for Hour and 0 for Minutes. o Press Done. • Press Add Step. You will now see Step 3. o Change step type to Soak. o Enter 2 for Hour and 30 for Minutes. o Press Done. TestEquity 101H Temperature/Humidity Chamber Page 31... - Page 32 Press Profile End Step Loop Action 1, press User and change it to Hold. o At Power press On and change it to Off. o Press Done. • Press Options. o Press Done to save the profile. or… o Press Run Profile to run the profile. Page 32 TestEquity 101H Temperature/Humidity Chamber...
-
Page 33: Data Logging
This menu indicates which data points have been selected. Select Data Points You can select the parameters which get logged. TestEquity has pre-configured the controller to log the Temperature Set Point, Humidity Set Point, Temperature Process Value, and Humidity Process Value. -
Page 34: How To Enable Data Logging
Log Interval, Modbus register 42388 [0.1, 0.2, 0.5, 1, 2, 5, 10, 15 and 30 seconds, 1, 2, 5, 10, 15, 30 and 60 minutes] 2. Load Modbus register 42386 “Log Action” with 1782 [start]. 3. Write Modbus registers to the controller. Page 34 TestEquity 101H Temperature/Humidity Chamber... -
Page 35: Transferring Data Log Files
2. Press the Data Logging button. 3. Press the Data Log File Transfer button. 4. Select Auto Transfer Type: TFTP, Samba, or USB. NOTE: If TFTP or Samba is selected above, the server must be configured. TestEquity 101H Temperature/Humidity Chamber Page 35... -
Page 36: Trend Charts
To access trend charts, press the Menu button and then the Trending button. Press the Actions button for Trend Chart 1. This chart has already been set up by TestEquity to display Temperature, Humidity, Temperature Set Point, and Humidity Set Point. -
Page 37: Exporting/Importing Profiles And Configuration Via Usb
5. Press the Export button next to Configuration. 6. A progress bar will appear and then indicate 100% when done. Importing a configuration file is accomplished like the profile import except you select Configuration and then selecting the desired configuration file. TestEquity 101H Temperature/Humidity Chamber Page 37... -
Page 38: Personalizing The Home Screen
Personalizing the Home Screen Placement of objects on the home screen can be modified by the user. You must have a password to enter the Personalization screen. Please contact TestEquity for the password. To personalize the Home screen, do the following: 1. -
Page 39: Changing Loop Operational Parameters
You must have a password to change the loop PID tuning parameters. ! CAUTION: The F4T PID tuning values have been properly configured by TestEquity to match the chamber’s system requirements and to perform optimally over a wide range of operating conditions. Improper modifications to these values can result in erratic performance and unreliable operation. -
Page 40: Operations Page
To disable the Snapshot function, press the Menu button and then the Help icon (you may have to scroll the screen to the end to see the Help icon). Then press the Disable camera icon. The icon will change from Disable to Enable. Page 40 TestEquity 101H Temperature/Humidity Chamber... -
Page 41: Dew Point Utility
Power switch on. In the example below, Source Value A is the chamber temperature (18.5°C), Source Value B is the chamber humidity (60.2% RH), and Output Value is Dew Point temperature (10.6°C). TestEquity 101H Temperature/Humidity Chamber Page 41... -
Page 43: Chapter 5 - Composer Software
Overview Watlow Composer Software can be used to create, edit, and archive profiles. It can also be used to configure the controller. Since the controller is already configured by TestEquity for use in your chamber, configuration instructions are not provided. -
Page 44: Composer Welcome Screen Orientation
It might take a couple of minutes until the controller is found, especially of the F4T is configured for DHCP instead of a fixed IP address. Double clicking on the system will bring up the System Overview screen shown on the next page. Page 44 TestEquity 101H Temperature/Humidity Chamber... -
Page 45: System Overview Screen
• Home, controls access to controller’s home screen.* • Control Mode, controls access to setting the control mode, set points and PID parameters.* • Autotune, controls access to running the autotune feature.* • PID Settings, controls access to the PID settings.* TestEquity 101H Temperature/Humidity Chamber Page 45... - Page 46 *This setting limits access to via controller’s front panel user interface only, not via Composer. The image below shows the security levels as configured by TestEquity. You must contact TestEquity to get the passwords for your chamber. After making all the desired security settings, ensure that the security enabled radio button (top left in the graphic above) is checked.
-
Page 47: Save System Image
2. Use the save as dialog to select the destination folder for the image. 3. Enter the desired filename. 4. Click Save. Note: The system image filename will always have the extension wsi for Watlow System Image and cannot be changed. TestEquity 101H Temperature/Humidity Chamber Page 47... -
Page 48: Import System Image
3. Double-click the desired filename or single-click the filename and then click the Open button. 4. After a system image is imported, we suggest you cycle power to the F4T Controller and restart Composer software. Page 48 TestEquity 101H Temperature/Humidity Chamber... -
Page 49: Global Settings
The Pluggable Module Screen shows what modules are installed. TestEquity has already installed and configured the correct modules for your chamber. Since this is not intended to be an ordinary user function, no further instructions will be covered in this manual. -
Page 50: Creating And Editing Profiles In Composer Software
Password Protect a Profile: Avoid unwanted and inadvertent changes to a profile with password protection. Changing or Removing a Password from a Profile: When password protection is no longer needed it can be easily removed. Page 50 TestEquity 101H Temperature/Humidity Chamber... -
Page 51: Profile View - Screen Orientation
• You can use Add new step... or the buttons at the bottom to insert or delete a step. ③ Step Detail • Shows all available selections for the selected step while also allowing each to be modified. • You can give the profile a name as well as apply password protection. TestEquity 101H Temperature/Humidity Chamber Page 51... -
Page 52: Profile Parameters
When multiple conditions are specified, the profile will not proceed until all the conditions are satisfied at the same time. • END: Sets the temperature/humidity set points, and event output conditions when the profile ends. Page 52 TestEquity 101H Temperature/Humidity Chamber... - Page 53 • On: the step sets the event output on or true. • Off: the step sets the event output off or false. • Unchanged: the step does not set the event output; it remains in whatever state was previously set. TestEquity 101H Temperature/Humidity Chamber Page 53...
-
Page 54: Opening The Profile View
To load a profile previously saved on the computer in to controller memory: 1. Click the Load button. 2. Use the open dialog to locate and select the desired profile file. 3. Click Open. Page 54 TestEquity 101H Temperature/Humidity Chamber... -
Page 55: Duplicating A Profile
To insert a new step ahead of an existing step: • Right-click the step and choose Insert Step Before in the pop-up menu. • Click the step and then click the Insert Before button at the bottom of the step list. TestEquity 101H Temperature/Humidity Chamber Page 55... -
Page 56: Deleting Steps
6. Click OK. To remove a profile’s password: 1. Select the profile by clicking it in the profile list. 2. Enter the password and click OK. 3. Click the Password button. 4. Click the Remove button. Page 56 TestEquity 101H Temperature/Humidity Chamber... -
Page 57: Chapter 6 - Communications
• MAC Address: xx:xx:xx:xx:xx:xx (Will be different and unique for each controller) MAC address, is a manufacturer supplied address for the network interface card. • Display Units: °F, °C [configured by TestEquity for °C] • Modbus® TCP Enable: [Yes], No Modbus is an industrially hardened field bus protocol used for communications from the controller to other devices on the network. -
Page 58: Rs-232 Parameters
• Parity: [None] Must match the parity of your computer’s serial port and software. • Display Units: °F, °C [configured by TestEquity for °C] • Modbus Word Order: [High], Low Modbus allows a user to select the word order of two 16-bit words in floating point values. -
Page 59: Modbus
3. Select the Ethernet (for LAN) or Modbus (for RS-232) communications channel 4. Scroll the screen down to find Data Map and select 1 (for F4T) or 2 (for legacy F4 Compatibility Mode). 5. Recycle the power to put the new settings into effect. TestEquity 101H Temperature/Humidity Chamber Page 59... -
Page 60: Common Modbus Registers
Manual Ramp Parameters (Ramp to Set Point without a profile) Ramp Action (Temperature) 2794 Off = 62 Startup = 88 Set Point = 85 Both = 13 Ramp Scale (Temperature) 2796 °/Minutes = 57 °/Hours = 39 Ramp Rate (Temperature) 2798 Page 60 TestEquity 101H Temperature/Humidity Chamber... -
Page 61: F4 Compatibility Mode (Data Map 2)
16-bit W Profile Start Step # 4001 16-bit W Profile Action Start: 4002 16-bit W Create (1) Insert Step (2) Delete Current profile (3) Delete Step (4) Start Profile (5) Delete all Profiles (256) TestEquity 101H Temperature/Humidity Chamber Page 61... -
Page 62: Scpi Programming Mode
W the selected profile pause profile :PROGRAM:STATE PAUSE W the selected profile resume profile :PROGRAM:STATE RESUME W the selected profile Identification *IDN? "Watlow Electric",<string value>,<integer value>,<string value> (manufacturer) (model number) (serial number) (firmware level) Page 62 TestEquity 101H Temperature/Humidity Chamber... -
Page 63: Gpib And Ethernet Modbus Interface Converters (Optional)
Serial Modbus-to-Ethernet Converter (Option 1056) Your chamber may have been ordered with a Serial Modbus-to-Ethernet Interface option. GPIB communications is achieved through an ICS Electronics 9099 (TestEquity Option 1056). The programming syntax is the same as the GPIB Interface Converter mentioned above. For more details, see the documentation that came with the Ethernet interface option. -
Page 64: Programming Syntax For The F4T Controller
Read Closed Loop Set Point RF? 2810 (instantaneous temperature set point during a ramp or profile) Turn (Event 1) ON W 16594, 63 Event 1 is “Power” Turn (Event 1) OFF W 16594, 62 Page 64 TestEquity 101H Temperature/Humidity Chamber... - Page 65 Off = 62 Startup = 88 Set Point = 85 Both = 13 Ramp Scale (Temp. °/Minutes) W 2796, 57 Ramp Scale (Temp. °/Hours) W 2796, 39 Ramp Rate (Temperature) WF 2798, value (0 to 99,999) TestEquity 101H Temperature/Humidity Chamber Page 65...
-
Page 67: Chapter 7 - Frequently Asked Questions
How can I modify the chamber to cool faster or colder? Unfortunately, there is nothing you can do to improve upon the designed-in performance. TestEquity does NOT recommend using CO or LN in this chamber to achieve colder or faster cooling due to reliability and safety considerations, so it is NOT an available option. - Page 68 This will ensure that nothing has been damaged and that a leak has not developed. 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 69: Chapter 8 - Specifications
Operation at higher ambient temperatures will result in decreased cooling performance. Operation above 30°C (85°F) or below 16°C (60°F) ambient is not recommended. Due to continuous product development, specifications are subject to change without notice. TestEquity 101H Temperature/Humidity Chamber Page 69... -
Page 71: Chapter 9 - Maintenance
• Inspect or replace the water recirculation filter cartridge. Every 6 Months • Inspect the door seal. • Clean the condenser. Every 12 Months • Inspect the electrical/refrigeration compartment. • Verify the chamber performance. • Verify the calibration. TestEquity 101H Temperature/Humidity Chamber Page 71... -
Page 72: How To Clean The Chamber Interior And Exterior
9. If the chamber is connected to a plumbed and filtered water source, turn the water supply back on. The reservoir will automatically re-fill to the correct level. Closed (normal operational) position. Open (maintenance) position Page 72 TestEquity 101H Temperature/Humidity Chamber... -
Page 73: How To Inspect/Change The Water Recirculation System Filter Cartridge
If the top half is completely brown it should be replaced. Replacement cartridges are available from TestEquity (our part number 383911). 2. Use a screwdriver to loosen the clamps from the bottom and top of the filter and remove the tubing from the barbed fitting on the filter. -
Page 74: How To Clean The Condenser
4. Inspect for oil around refrigeration valves, fittings and joints. This may be a sign of leaks. 5. Inspect for loose hardware and tighten as required. 6. Check for loose wires and burned insulation near terminals. 7. Inspect for signs of insect or rodent infestation. Yes, it does happen! Page 74 TestEquity 101H Temperature/Humidity Chamber... -
Page 75: How To Verify The Performance (Non-Controlled Humidity Mode)
These tests assume that the F4T Controller’s setup and tuning values have not been changed from the values as shipped from TestEquity. Also, the Limit Alarm high limit must be set to over +85°C (+100°C would be fine), and the low limit set to –25C. -
Page 76: How To Verify The Performance (Controlled Humidity Mode)
These tests assume that the F4T Controller’s setup and tuning values have not been changed from the values as shipped from TestEquity. Also, the Limit Alarm high limit must be set to over +85°C (+100°C would be fine). If the chamber fails any of these tests, it should be removed from service to prevent further damage until the cause of the problem is determined and resolved. -
Page 77: How To Verify The Temperature Calibration
TestEquity recommends verifying the calibration before attempting to actually perform a calibration. The microprocessor-based instrumentation used in TestEquity chambers 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 78: How To Verify The Humidity Calibration
Chapter 9 – Maintenance How to Verify the Humidity Calibration TestEquity recommends verifying the humidity calibration before attempting to perform any adjustments. If you try to calibrate the instrumentation before determining that calibration is necessary, you may make it worse if done incorrectly. -
Page 79: F4T Controller Calibration
• To enter the Calibration menu, press the Menu button, then the Service button, then the Calibration button, then the Humidity Sensor “Actions” button. Next, press Perform Field Calibration and follow the on-screen prompt. TestEquity 101H Temperature/Humidity Chamber Page 79... - Page 80 • To enter the Calibration menu, press the Menu button, then the Service button, then the Calibration button, then the Limit Sensor “Actions” button. Next, press Perform Field Calibration and follow the on-screen prompts. Page 80 TestEquity 101H Temperature/Humidity Chamber...
-
Page 81: Theory Of Operation
Capillary Tubes (9) and the finned evaporator coil (15) inside the chamber. The F4T Controller cycles the liquid-line solenoid valve (SV1 or 7/8) ON/OFF as required to maintain the temperature set point. TestEquity 101H Temperature/Humidity Chamber Page 81... - Page 82 The hot gas regulator (5) is adjusted to keep the suction pressure at 8 PSIG when both SV1 and SV2 are off. A suction line cooling thermostatic expansion valve (6) senses the suction line temperature and injects liquid refrigerant to cool the suction return gas within safe limits. Page 82 TestEquity 101H Temperature/Humidity Chamber...
-
Page 83: Troubleshooting
Control parameters may need to be temperature controller are as shipped from changed for your unique test conditions. TestEquity and only occurs in cool mode. b) Solenoid valve SV1 may be defective if temperature varies by several degrees. Cannot achieve F4T Power and Humidity buttons are ON. -
Page 84: Refrigeration System Charging Instructions
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! -
Page 85: Replacement Parts
Chapter 9 – Maintenance Replacement Parts Replacement parts are available from TestEquity. Parts are usually in-stock and ready for immediate shipment. Next-day delivery is always available. Major Electrical Parts Description Mfr Part No. Ref # Part # Air Heater, 400W... -
Page 87: Chapter 10 - 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 89: Chapter 11 - Drawings
Chapter 11 – Drawings Chapter 11 – Drawings TestEquity 101H Temperature/Humidity Chamber Page 89... - Page 91 Electrical Subpanel Component Location...