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Sheldon SVAC1s Installation & Operation Manual

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SVAC BENCHTOP VACUUM OVENS
Installation - Operation Manual
SVAC1s SVAC2s SVAC4s

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Summary of Contents for Sheldon SVAC1s

  • Page 1 SVAC BENCHTOP VACUUM OVENS Installation - Operation Manual SVAC1s SVAC2s SVAC4s...
  • Page 2 Pictured on the front cover, left to right: SVAC1, SVAC2, SVAC4 The SVAC1, SVAC2, and SVAC4 ovens require a 110 – 120-volt NEMA 5-15R power outlet. The SVAC1-2, SVAC2-2, SVAC4-2 ovens require a 220 – 240-volt NEMA 6- 15R or a CEE7 power socket compatible with CEE7/7 plugs to plug in to. Warning: This product contains chemicals, including triglycidyl isocyanurate, known to the State of California to cause cancer as well as birth defects or other reproductive harm.
  • Page 3 Benchtop Vacuum Ovens 110 – 120 Voltage Models: SVAC1 SVAC2 SVAC4 220 – 240 Voltage Models: SVAC1-2 SVAC2-2 SVAC4-2 Part Number (Manual): 4861835 Revision: November 22, 2021 Sheldon Part ID Numbers: Model SVAC1 SVAC2 SVAC4 Part ID SLV122 SLV222 SLV422...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS MODEL CERTIFICATIONS ............................7 Electromechanical Safety Testing ............................. 7 INTRODUCTION ................................ 9 Read this Manual ..................................9 Safety Considerations and Requirements ........................9 Contacting Assistance ................................ 10 Manufacturing Warranty ..............................10 Engineering Improvements..............................10 Vacuum Supply Requirements ............................11 Reference Sensor Device ..............................
  • Page 5 Unlocking the Temperature Controller .......................... 61 Heating Issues — Diagnostic Questionnaire ....................... 64 Vacuum Leak Issues – Diagnostic Questionnaire ..................... 69 UNIT SPECIFICATIONS ............................75 Weight ......................................75 Dimensions .....................................75 Capacity ....................................76 Shelf Capacity by Weight ..............................76 Vacuum ....................................76 Temperature ..................................77 Power .......................................
  • Page 6 TABLE OF CONTENTS P a g e...

  • Page 7: Model Certifications

    NRTL, and an EU Notified Body. CE C OMPLIANT These unit models meet all required electromagnetic compatibility (EMC), EU low-voltage, and RoHS directives. ISO C ERTIFIED ANUFACTURER SHEL LAB is a brand of Sheldon Manufacturing, INC, an ISO 9001 certified manufacturer. P a g e...
  • Page 8 CERTIFICATIONS P a g e...

  • Page 9: Introduction

    INTRODUCTION Thank you for purchasing a SHEL LAB oven. We know you have many choices in today’s competitive marketplace when it comes to constant temperature equipment. We appreciate you choosing ours. We stand behind our products and will be here if you need us. EAD THIS ANUAL Failure to follow the guidelines and instructions in this user manual may create a protection...

  • Page 10: Contacting Assistance

    NGINEERING MPROVEMENTS Sheldon Manufacturing continually improves all of its products. As a result, engineering changes and improvements are made from time to time. Therefore, some changes, modifications, and improvements may not be covered in this manual. If your unit’s operating characteristics or appearance differs from those described in this manual, please contact your SHEL LAB dealer or customer service representative for assistance.

  • Page 11: Vacuum Supply Requirements

    For the oven chamber door to seal, the vacuum pump or system must be able to evacuate at least 1 cubic foot per minute (cfm) for each cubic foot of oven chamber volume (CuFt). Model Chamber Capacity Min. Pump Capacity CFM Min. Pump Capacity LPM SVAC1s 0.56 CuFt 1 cfm 28 Liters per Minute SVAC2s 1.67 CuFt...

  • Page 12: Reference Sensor Device

    INTRODUCTION EFERENCE ENSOR EVICE Must be purchased separately. A reference sensor device is required for calibrating the unit temperature display. Reference devices must meet the following standards: Accurate to at least 0.1°C • Reference The device should be regularly calibrated, preferably by a third party. Device Temperature Probes Use a digital device with wire thermocouple probes that can be introduced into the unit chamber...

  • Page 13: Oven Chamber Gaskets

    INTRODUCTION HAMBER ASKETS Wear and Replacement Chamber gaskets are non-warranty, high-wear consumable items subject to compression forces, heat, and outgassed byproducts. Heavy usage rates may necessitate frequent replacements. The manufacturer strongly recommends keeping a spare gasket on hand during operation. Included Chamber Gasket Each oven comes with a replaceable silicone gasket installed on the chamber liner, which seals the oven chamber when the door is closed, and the chamber is under vacuum.
  • Page 14 INTRODUCTION 14 | P a g e...

  • Page 15: Receiving Your Unit

    RECEIVING YOUR UNIT NSPECT THE HIPMENT When a unit leaves the factory, safe delivery becomes the responsibility of the carrier. Damage sustained during transit is not covered by the manufacturing defect warranty. When you receive your unit, inspect it for concealed loss or damage to its interior and exterior. If you find any damage to the unit, follow the carrier’s procedure for claiming damage or loss.
  • Page 16 RECEIVING Included Accessories SVAC1s Tall Shelves Short Bottom Shelf SVAC2s Tall Shelves Short Bottom Shelf Leveling Feet SVAC4s Shelves Shelf Clips Leveling Feet 110V Ovens 1 Power Cord SVAC1 SVAC2 SVAC4 NEMA 5 -15P 220V Ovens 2 Power Cords SVAC1-2...

  • Page 17: Orientation

    RECEIVING RIENTATION SVAC4s Chamber Door Shelf Standard Rail Access Port (hidden by the shelf in this image) Temperature Probe Chamber Gasket Seal Oven Chamber Main Control Panel Vacuum Control Panel 17 | P a g e...
  • Page 18 RECEIVING Back of SVAC4s KF-25 Access Port (Includes Blank and Clamp, not pictured here) RS485 Data Port 9-Pin Vacuum Port, 3/8 inch (9.52 mm) Chamber Vent Inlet Port ¼ inch (6.35 mm) Data Plate Power Cord Inlet Fuse Holder Fuse Holder(s) SVAC4: One holder •...
  • Page 19 RECEIVING SVAC2s Tall Shelf Chamber Door Tall Shelf Temperature Probe Clip on the Short Shelf Chamber Gasket Seal Main Control Panel Vacuum Control Panel Access Port (KF-25 Fitting) 19 | P a g e...
  • Page 20 RECEIVING Back of SVAC2s KF-25 Access Port (Includes Blank and Clamp, not pictured here) Vacuum Port 3/8 inch (9.52 mm) Chamber Vent Inlet Port ¼ inch (6.35 mm) Data Plate Power Cord Inlet Fuse Holder RS485 Data Port 9-Pin Fuse Holder(s) SVAC2: One holder •...
  • Page 21 RECEIVING SVAC1s Chamber Door Door Latch Tall Shelf Tall Shelf Short Shelf (Bottom) Chamber Gasket Seal Temperature Probe Clip Control Panel Access Port (KF-25 Fitting) 21 | P a g e...
  • Page 22 RECEIVING Back of SVAC1s KF-25 Access Port (Includes Blank and Clamp, not pictured here) RS485 Data Port 9-Pin Chamber Vent Inlet Port ¼ inch (6.35 mm) Vacuum Port 3/8 inch (9.52 mm) Data Plate Power Cord Inlet Fuse Holder Fuse Holder(s) SVAC1: One holder •...

  • Page 23: Dimension Visuals

    RECEIVING IMENSION ISUALS SVAC4s See page 28 for the required ventilation clearances. Depth: 35.2 inches (894 mm) Height: 32.8 inches (833 mm) Exterior Width: 27.0 inches (686 mm) Chamber Height: 18.0 inches (457 mm) Chamber Depth: 24.0 inches (610 mm) Interior Chamber Width: 18.0 inches (457 mm) Shelves...
  • Page 24 RECEIVING SVAC2s See page 28 for the required ventilation clearances. Depth: 31.3 inches (795 mm) Height: 26.8 inches (681 mm) Exterior Width: 20.8 inches (528 mm) Chamber Height: 12.0 inches (304 mm) Chamber Depth: 20.0 inches (508 mm) Interior Chamber Width: 12.0 inches (304 mm) Tall Shelves Shelf Depth: 19.0 inches (483 mm)
  • Page 25 RECEIVING SVAC1s See page 28 for the required ventilation clearances. Depth: 23.0 inches (584 mm) Height: 23.7 inches (602 mm) Exterior Width: 17.5 inches (444 mm) Chamber Height: 9.0 inches (228 mm) Chamber Depth: 12.0 inches (304 mm) Interior Chamber Width: 9.0 inches (228 mm) Tall Shelves Shelf Depth: 11.0 inches...

  • Page 26: Record The Data Plate Information

    RECEIVING ECORD THE LATE NFORMATION The data plate contains the unit model number, serial number, part number, and part ID. Customer Support will need this information during any support call. Record it below for future reference. The data plate is located on the back of the oven, above the power cord inlet. •...

  • Page 27: Installation

    INSTALLATION NSTALLATION ROCEDURE HECKLIST For installing the unit in a new workspace location. Pre-Installation  Verify a vacuum supply source suitable for your application is available and can be connected to the oven, page 11. See page 35 for the oven gas and vacuum port locations. •...

  • Page 28: Required Ambient Conditions

    6” (152 mm) Fan Door Swing 6” (152 mm) 6” (152 mm) SVAC1s: 17.6” (447 mm) SVAC2s: 20.8” (528 mm) SVAC4s: 27.0” (686 mm) 6 inches (152 mm) of clearance is required on the sides. 12 inches (305 mm) of headspace clearance is required between the top of the unit and any overhead partitions.

  • Page 29: 110 - 120 Volt Power Requirements

    INSTALLATION Note: See the next page for the 220-volt ovens. 110 – 120 V OWER EQUIREMENTS Applies to: SVAC1, SVAC2, SVAC4 When selecting a location for the unit, verify each of the following requirements is satisfied. Power Source: The power source must match the voltage and amperage requirements listed on the unit data plate.

  • Page 30: 220 - 240 Volt Power Requirements

    INSTALLATION 220 – 240 V OWER EQUIREMENTS Applies to SVAC1-2, SVAC2-2, SVAC4-2 When selecting a location for the unit, verify each of the following requirements is satisfied. Power Source: The power source must match the voltage and amperage requirements listed on the unit data plate.

  • Page 31: Lifting And Handling

    SVAC2s and SVAC4s: Install the 4 leveling feet in the 4 corner holes in the bottom of the oven. Note: To prevent damage when moving the unit, turn all 4 leveling feet so that the leg of each foot sits inside the unit. SVAC1s: The rubber leveling feet are non-adjustable. 31 | P a g e...

  • Page 32: Install The Oven

    INSTALLATION NSTALL THE Install the unit in a workspace location that meets the criteria discussed in the previous entries of the Installation section. Do not connect the oven to its power source at this time. • EIONIZED AND ISTILLED ATER Do not use deionized water to clean the unit, even if DI water is readily available in your laboratory.

  • Page 33: Shelving Installation

    1. Carefully slide the short shelf into position on the chamber floor, sliding the clip on the bottom of the shelf onto the oven temperature probe. SVAC1s: The shelf clip should be on the side of the shelf closest to the back wall of the •...
  • Page 34 INSTALLATION Shelving Installation Continued SVAC4s Shelving To ensure accurate temperature measurement, one shelf bottom must be in close proximity to the oven temperature probe. This probe extends out from the chamber back wall. Do not place the shelf in direct contact with the probe. Shelf Probe Install 4 Shelf Clips...

  • Page 35: Connect To The Vacuum Supply

    INSTALLATION ONNECT TO THE ACUUM UPPLY Use clamps to secure the tubing to the Vacuum and Vent Ports. KF-25 Vacuum Port 1. Vacuum Supply: Connect to the 3/8-inch (9.5 mm) Vacuum Port. Optional: Connect a clean gas supply to the Vent Port (Backfill Inlet).
  • Page 36 INSTALLATION 36 | P a g e...

  • Page 37: Graphic Symbols

    GRAPHIC SYMBOLS The unit is provided with graphic symbols on its exterior. These identify hazards and adjustable components as well as important notes in the user manual. Symbol Definition Consult the user manual Consulter le manuel d'utilisation Over Temperature Limit system Thermostat température limite contrôle haute AC Power Repère le courant alternatif...
  • Page 38 SYMBOLS 38 | P a g e...

  • Page 39: Control Overview

    CONTROL OVERVIEW Control Panels Power Switch The switch illuminates when in the ON ( I ) position. Temperature Controller - Display on Homepage Top Line (Red): Present chamber shelving temperature Middle Line (Green): The constant temperature setpoint Bottom Line: Flashing “2” indicates active heating While on the homepage, the Up and Down arrow buttons adjust the constant temperature setpoint.
  • Page 40 CONTROL OVERVIEW Vacuum Gauge As set at the factory, this gauge shows the chamber vacuum level in inches of mercury (inHg) relative to sea level atmospheric pressure. The display range is 0 to -29.9 inHg. Zero is the room atmosphere pressure at sea level and -29.9 inHg a near-perfect vacuum. See page 52 for how to display other units of measurement or zero the gauge to your local altitude.

  • Page 41: Operation

    OPERATION Safe operation of the oven depends on the actions and behavior of the oven end-user. Operating personnel must read and understand the Operating Precautions in this section prior to operating the oven. The end-user must follow these instructions to prevent injuries and to safeguard their health, environment, and the materials being treated in the oven, as well as to prevent damage to the oven.

  • Page 42: Theory Of Operation

    OPERATION HEORY OF PERATION Vacuum Vacuum is supplied by an external vacuum supply (a pump or building system) connected to the vacuum port on the back of the oven. Vacuum levels obtained in the oven chamber are dependent on pump type and performance, valve settings, and the nature of the application or process, including the volume of materials outgassed.
  • Page 43 OPERATION Heating in a Vacuum In conventional ovens, powered elements transfer heat into the chamber air. The heated air then circulates by natural convection or blower fan action and surrounds the product on the shelves, gradually bringing it to temperature. In a vacuum oven, heat transfer takes place in part through direct infrared radiation.

  • Page 44: Put The Oven Into Operation

    OPERATION UT THE VEN INTO PERATION Perform the procedures below after the unit has been installed in a new workplace location. These verify the integrity of the vacuum system and prepare the oven for normal use. Attach the Power Cord Attach the power cord that came with the unit to the power inlet receptacle on the back of the oven.
  • Page 45 OPERATION Continued from the previous page Verify Vacuum Integrity Use the Evacuating the Chamber procedure on page 47 to pump down and hold the oven chamber under vacuum for 10 minutes to verify the integrity of the vacuum supply system. ...

  • Page 46: Set The High Temperature Limit

    OPERATION ET THE EMPERATURE IMIT Note: Test the high limit system once per year for functionality. Set the high-temperature limit at least 10°C above the highest temperature the oven will run at during your recipe program or constant-temperature application. See the High Temperature Limit system explanation on page 43.

  • Page 47: Evacuating And Backfilling The Oven Chamber

    OPERATION VACUATING AND ACKFILLING THE HAMBER The oven chamber must be drawn down to at least -3 inHg (-76 mmHg or -10 kPa) to seal. Option 1: Vacuuming down with a pump connected to the vacuum port. Evacuate the Oven Chamber Verify the Vacuum and Vent Valve controls are in the closed position This protects your vacuum pump from exposure to streaming •...
  • Page 48 OPERATION Option 2: Vacuuming down with a vacuum supply connected to the KF-25 fitting on the back of the oven. Evacuate the Oven Chamber Verify the Vacuum and Vent Valve controls are in the closed position This protects your vacuum pump from exposure to streaming •...

  • Page 49: Setting The Constant Temperature Setpoint

    OPERATION ETTING THE ONSTANT EMPERATURE ETPOINT Adjust the constant temperature setpoint on the homepage Stay 10°C below the high • limit setpoint. Note: Holding down an arrow button will cause the temperature to advance in increments of ten (10). Adjust Release the arrow buttons after adjusting the setpoint There may be a brief pause as the oven controller •...

  • Page 50: High Temperature Limit Activated

    OPERATION EMPERATURE IMIT CTIVATED The High Limit system cuts off heating in the oven whenever the chamber temperature meets or exceeds the Limit setting. Heating remains disabled until the oven end-user clears the Limit cutoff. Indicators Alternating Screens When heating is cut off, the oven display flashes an alert screen alternating with the homepage.

  • Page 51: Changing The Unit Of Measurement

    OPERATION ⁰C ⁰F  HANGING THE NIT OF EASUREMENT The controller can display temperatures in either Celsius or Fahrenheit. 1. Starting on the homepage, push the green Advance button until reaching the “C_F1” units of measurement option. 2. Use the Arrow buttons to change the measurement parameter on the top display line to your preferred unit of measurement.

  • Page 52: Vacuum Gauge Operations

    OPERATION ACUUM AUGE PERATIONS Change the Unit of Measurement 1. Place the vacuum gauge in its adjustment mode. a. Press and hold the “M” button for approximately 3 seconds. The display will begin to blink and show a unit of measurement. •...

  • Page 53: Maximum Obtainable Vacuum

    OPERATION AXIMUM BTAINABLE ACUUM The maximum vacuum obtainable, as measured by the oven gauge, is in part a function of altitude. While a vacuum pump will evacuate the same percentage of atmosphere from the oven chamber at higher altitudes, less overall pressure is expelled because of the reduced density. Put differently, at sea level, there are 29.9 inches of mercury pressure that can be drawn out of the oven chamber by a vacuum pump.

  • Page 54: Data Port

    OPERATION 9-Pin Port The 9-pin RS485 data port, located on the back of the oven, connects to the oven temperature controller. The port is primarily intended for updating the controller software but can be used for data logging and graphical temperature recipe programming. Accessing the controller with a computer requires a 9-pin RS485-to-USB converter cable and driver software.

  • Page 55: User Maintenance

    USER MAINTENANCE Warning: Disconnect the unit from its power supply prior to maintenance or cleaning of this unit. Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon secteur de la source d'alimentation. LEANING If a hazardous material or substance has spilled in the unit, immediately initiate your site Hazardous Material Spill Containment protocol.

  • Page 56: Maintaining Atmospheric Integrity

    MAINTENANCE Oven Exterior Cleaning Guidelines 1. Disconnect the unit from its power supply. 2. The manufacturer recommends cleaning the unit with a mild soap and water solution. Do not use abrasive cleaners, these will damage metal surfaces. • Cleaning agents must be compatible with steel and powder coat paint surfaces. •...

  • Page 57: Calibrating The Temperature Display

    MAINTENANCE ALIBRATING THE EMPERATURE ISPLAY Note: Performing a temperature display calibration requires a temperature reference device. Please see the Reference Sensor Devices entry on page 12 for device requirements. Temperature calibrations match the temperature display to the actual chamber temperature inside the oven chamber.
  • Page 58 MAINTENANCE 7. The unit temperature must be stable to perform an accurate calibration. The temperature is considered stabilized when the oven chamber has operated at your • calibration temperature for at least 1 hour with no fluctuations greater than the specified temperature stability of the oven (see the Unit Specifications chapter).
  • Page 59 MAINTENANCE Calibration continued Unlock the controller. See the Unlocking procedure on page 61. • Note: The temperature controller must be unlocked to access the Operations menu and enter a calibration offset. Navigate to the Operations menu after unlocking the controller. a.
  • Page 60 MAINTENANCE Calibration continued Wait for 30 minutes for the oven to stabilize, after the oven has achieved the setpoint with the corrected display value. Failure to wait until the oven is fully stabilized will • result in an inaccurate reading. Reference Device Compare the reference device reading with the chamber display again.

  • Page 61: Unlocking The Temperature Controller

    MAINTENANCE NLOCKING THE EMPERATURE ONTROLLER The oven temperature controller is software locked at the factory to ensure the integrity of its configuration file. This safeguards against end-users accidentally altering the oven functionality or safe operating bounds. The controller must be unlocked to access the Operations menu and enter calibration offsets. Backing Up the Configuration File The manufacturer recommends saving the controller configuration file prior to making any changes to Operations options.
  • Page 62 MAINTENANCE Unlocking the Controller Continued Advance to the second security parameter, “LoC.P” a. Push the Advance button once, saving the previous parameter and advancing to the next parameter. Adjust the LoC.P setting from 2 to 3. a. Push the Up arrow button. Advance twice.
  • Page 63 MAINTENANCE Unlocking the Controller Continued Change the “SLoC” parameter from 2 to 5. a. Push the Up arrow button. Return to the homepage to access the now unlocked Operations page. a. Push the Reset button twice. Relocking the Controller Always relock the controller after completing a calibration or other Operations menu procedure. To relock the controller, repeat the Unlocking procedure, only this time restore all the •...

  • Page 64: Heating Issues - Diagnostic Questionnaire

    MAINTENANCE — D EATING SSUES IAGNOSTIC UESTIONNAIRE If the unit is experiencing heating issues, use this questionnaire to gather information on the unit before contacting Customer Support. Gathering and sharing this information aids Customer Support in making timely and accurate remote diagnoses. Additionally, datalogger files, as well as pictures and videos of the unit in its failure mode, are valuable diagnostic resources that can be shared with Customer Support.
  • Page 65 MAINTENANCE Note: Does the car have gas in the tank? Have you physically verified the computer is plugged in? Yes, we are going to ask some very basic questions. Please bear with us. Methodical verifications and the elimination of potential failure causes are often the quickest means of getting a unit back into operation.
  • Page 66 MAINTENANCE Required Item: Temperature reference device. A calibrated digital thermometer with a vacuum- rated thermocouple feedthrough. The device must be accurate to at least 0.1°C. Preparing for the SDRAP Observations The unit must be connected to a power source that meets the requirements in the Installation chapter (page 29) and turned on.
  • Page 67 MAINTENANCE SDRAP Diagnostic Questions Record the answers in the log on page 68. Setpoint What is the current temperature setpoint? Chamber Temperature in Red Setpoint in Green isplay? What chamber temperature is presently showing on the temperature display? eference? What temperature is the reference device presently showing for the chamber temperature? mbient? What is the current room temperature? For best results, measure the temperature in the same section of the room where the unit is located.
  • Page 68 MAINTENANCE SDRAP Answer Log Record answers to the SDRAP questions in this log. These document the unit behavior. SDRAP Record SDRAP Answers and Any Notes Here etpoint, present setting: isplay, present temperature reading: eference device, present reading: mbient, present temperature: Heating Indicator: ilot Lights, illuminating Y/N? High Limit Activated:...

  • Page 69: Vacuum Leak Issues - Diagnostic Questionnaire

    MAINTENANCE Vacuum Leak Issues – D IAGNOSTIC UESTIONNAIRE If the unit is experiencing vacuum leak issues, use this questionnaire to gather information on the unit prior to contacting Customer Support. Gathering and sharing this information aids Customer Support in making timely and accurate remote diagnoses.
  • Page 70 MAINTENANCE Note: Does the car have gas in the tank? Have you physically verified the computer is plugged in? Yes, we are going to ask some very basic questions. Please bear with us. Methodical verifications and the elimination of potential causes of failure are often the quickest means of getting a unit back into operation.
  • Page 71 MAINTENANCE Vacuum Diagnostic Setup Check the primary chamber gasket for damage. This is the gasket mounted either on the chamber liner or the door that seals the oven chamber when the door is closed. Look for: Cuts or nicks on the gasket caused by removing shelves or samples •...
  • Page 72 MAINTENANCE Vacuum Diagnostic Questions ump On and Running? Yes or no? ent Valve Closed? The vent (backfill inlet port) must be closed before pumping down the chamber. Failure to do so may result in damage to your vacuum pump. Vent Valve acuum Valve Open? The vacuum valve must be open to allow a connected vacuum supply to evacuate the oven chamber.
  • Page 73 MAINTENANCE eak Rate? Calculate and record the leak rate of the evacuated and isolated oven chamber: 1. Verify the oven chamber and shelving are at room temperature (20° – 25°C). 2. Verify the oven chamber is clean and dry to prevent outgassing from contaminants or water. 3.
  • Page 74 MAINTENANCE Vacuum Leak Diagnostic Data Log Record the diagnostic question answers in this log. These questions document the unit behavior. Diagnostic Questions Record Answers and Any Notes Here ump On and Running, Y/N? ent Valve Closed, Y/N? acuum Valve Open, Y/N? isplay Reading, Vacuum Gauge: erified the oven is Leaking,...

  • Page 75: Unit Specifications

    We reserve the right to alter technical specifications at all times. EIGHT Model Shipping Weight Unit Weight SVAC1s 156 lb / 71 kg 102.0 lb / 47.0 kg SVAC2s 253 lb / 115 kg 182.0 lb / 83.0 kg...

  • Page 76: Capacity

    UNIT SPECIFICATIONS APACITY Model Cubic Feet Liters SVAC1s 0.56 15.9 SVAC2s 1.67 47.2 SVAC4s 4.50 127.4 HELF APACITY BY EIGHT Model Per Shelf Maximum Total Load Max. No. Shelves SVAC1s 35.0 lb / 15.8 kg* 105.0 lb / 47.6 kg** SVAC2s 35.0 lb / 15.8 kg*...

  • Page 77: Temperature

    UNIT SPECIFICATIONS EMPERATURE Range and Uniformity Model Range Uniformity SVAC1s Ambient +10° to 220°C ±6.5% SVAC2s Ambient +10° to 220°C ±6.0% SVAC4s Ambient +10° to 220°C ±6.0% Stability Model @80°C @150°C @220°C SVAC1s ± 0.1°C ± 0.10°C ± 0.3°C SVAC2s ±...

  • Page 78: Power

    UNIT SPECIFICATIONS OWER 100 – 120 Volt Models Model AC Voltage Amperage Frequency SVAC1 110 – 120 50/60 Hz SVAC2 110 – 120 10.0 50/60 Hz SVAC4 110 – 120 13.0 50/60 Hz 220 – 240 Volt Models Model AC Voltage Amperage Frequency SVAC1-2...

  • Page 79: Parts Lists

    PARTS LISTS ARTS See the next page for gaskets. Description Parts Number Description Parts Number Leveling Feet, Shelf Tall, SVAC1s SVAC2s & SVAC4s 2700506 5680506 Fuse 110 – 120 Volt SVAC1, SVAC2,SVAC4 Shelf Short, SVAC1s T16A 250V 5x20mm 3300513 5680519 Fuse 220 –...

  • Page 80: Parts List

    SVAC4s: 3450671 Attacked by: Ketones, low molecular weight esters, and compounds containing nitro. Gasket Dimensions SVAC1s – 9.2 x 9.3 Inches (229 x 229 mm) SVAC2s – 12 x 12 Inches (305 x 304 mm) SVAC4s – 18 x 18 Inches...
  • Page 81 PARTS LIST 81 | P a g e...
  • Page 82 P.O. Box 627 Cornelius, OR 97113 support@sheldonmfg.com sheldonmanufacturing.com 1-800-322-4897 (503) 640-3000...

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