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Summary of Contents for Shel lab SVAC9-2
- Page 1 Vacuum Oven 230 Voltage Operation Installation - Manual SVAC9-2...
- Page 2 Special Quote (SQ) Number: 910-980-0004. This option must be chosen prior to the oven being built. All SVAC9-2 ovens come with stainless steel interiors.
- Page 3 SVAC9-2 Vacuum Oven 230 Voltage Part Number (Manual): 4861570 Revision: February 12, 2018 SHEL LAB is a brand of Sheldon Manufacturing, INC. Safety Certifications These units are CUE listed by TÜV SÜD as forced air ovens for professional, industrial, or educational use where the preparation or testing of materials is done at an ambient air pressure range of 22.14 –...
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Page 4: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ................................ 5 Read this Manual ..................................5 Safety Considerations and Requirements ........................5 Contacting Assistance ................................6 Engineering Improvements..............................6 Gaskets ..................................... 6 Vacuum Pump ..................................7 Temperature Reference Sensor Device .......................... 7 RECEIVING YOUR OVEN ............................9 Inspect the Shipment ................................ -
Page 5: 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. -
Page 6: Contacting Assistance
ASKETS The SVAC9-2 comes with Viton door and window gaskets installed. These are rated to 205°C and resistant to acids, but not solvents. Sheldon Manufacturing also offers Buna gaskets resistant to solvents and rated to 100°C. -
Page 7: Vacuum Pump
INTRODUCTION ACUUM The SVAC9-2 oven requires a vacuum source. The oven does not come with a vacuum pump. Use of an oil trap plumbed on the vacuum line between the oven and the pump is strongly recommended. The trap protects the pump from any oils outgassed during your baking application or procedure. - Page 8 INTRODUCTION P a g e...
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Page 9: Receiving Your Oven
RECEIVING YOUR OVEN NSPECT THE HIPMENT When an oven leaves the factory, safe delivery becomes the responsibility of the carrier. • Damage sustained during transit is not covered by the manufacturing defect warranty. • Save the shipping carton until you are certain that the unit and its accessories function •... -
Page 10: Orientation
RECEIVING RIENTATION Power Feed Braid and Circuit Breakers Back of Oven Figure 1: SVAC9-2 Chamber Door Latch Oven Chamber Door Control Panel Chamber Vent Valve Control Chamber Vacuum Control Valve Vacuum Plumbing Cabinet: A vacuum pump can be installed inside the cabinet. The cabinet The oven is KF25 vacuum port. -
Page 11: Recording Data Plate Information
RECEIVING ECORDING LATE NFORMATION Customer support needs the model number and serial number of your unit to accurately assist you during support calls or emails. Locate the unit data plate, and record both numbers below for future reference. The data plate is located on the left side of the unit near the back. •... - Page 12 RECEIVING 12 | P a g e...
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Page 13: Installation
INSTALLATION ARDWIRE EQUIREMENT The oven requires permanent connect wiring (commonly known as hardwiring). Wiring to the power source must be performed by a qualified electrical technician. All other Installation steps may be performed by the end user. NSTALLATION HECKLIST Carry out the procedures and steps listed below to install the oven in a new workspace location and prepare it for use. -
Page 14: Required Ambient Conditions
INSTALLATION EQUIRED MBIENT ONDITIONS When selecting a location to install the unit, consider all environmental conditions that can adversely impact its temperature performance. These include: Proximity to other ovens, autoclaves, and any device that produces significant radiant heat • Heating and cooling vents or other sources of fast-moving air currents •... -
Page 15: Power Source Requirements
The Disconnect must be marked as the disconnecting device for the equipment. • Circuit Breakers: The SVAC9-2 oven comes equipped with two (2) 20-amp circuit breakers located on the back of the oven. If a breaker trips, turn the oven power switch to off and locate a cause for the overcurrent before resetting the breaker. -
Page 16: Power Feed Wiring
INSTALLATION OWER IRING The oven comes provided with an integral 6 inch (150 mm) wire braid consisting of: Two 10-gauge hot wires and a 10-gauge earth ground • The wires for power source connection should be in accordance with the following: Green/Yellow –... -
Page 17: Leveling
INSTALLATION EVELING Install the 4 leveling feet with the 4 corner holes on the bottom of the oven. The oven must be level and stable for safe operation. To prevent damage when moving the unit, turn all 4 leveling feet so that the leg of each foot Note: sits inside the unit. -
Page 18: Install The Shelving
INSTALLATION NSTALL THE HELVING To ensure accurate temperature measurement, one shelf bottom must be in close proximity to the oven temperature probe extending out from the chamber back wall. Do not place the shelf in direct contact with the probe. Shelf Probe Install the shelf clips in the slots of the shelf standard mounting rails located on the sides of... -
Page 19: Connect To The Vacuum Supply
INSTALLATION ONNECT TO THE ACUUM UPPLY The oven is rated to 10 millitorrs Connect an external vacuum supply to the KF-25 vacuum flange. - Or - Install a pump in the vacuum plumbing cabinet. Connect the NEMA 6-20R pump to the cabinet vacuum port. Vacuum Connection Cabinet Power Supply Cabinet Vacuum and... - Page 20 INSTALLATION Vent Specifications The Cabinet Vacuum Port – 3/8 Inch (9.52 mm) OD • A vacuum supply may be connected to this port. The port evacuates chamber atmosphere and is opened and closed by the Vacuum Valve control on the front from of the oven.
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Page 21: Graphic Symbols
GRAPHIC SYMBOLS The oven is provided with multiple graphic symbols on its interior and exterior surfaces. The symbols identify hazards and the functions of the 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... - Page 22 GRAPHIC SYMBOLS 22 | P a g e...
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Page 23: Control Overview
CONTROL OVERVIEW Figure 2: Control Panel Power Switch The self-illuminating Power switch controls all power the oven and its systems. The switch must be in the illuminated ( I ) ON position for the unit to function. Vacuum Power Switch This self-illuminating switch controls the power outlet in the cabinet space, which is provided to power vacuum pumps. - Page 24 Labeled SET VACUUM, this digital gauge displays the chamber vacuum level in torr and millitorr (m/Torr.) In the SVAC9-2 vacuum oven, the InstruTech 301 VGC301 Convection Vacuum Gauge Controller is intended for use as an automatically functioning vacuum gauge and display with no required user inputs.
- Page 25 CONTROL OVERVIEW Vent Valve Located below the main control panel, this valve controls the chamber Vent Port (backfill inlet) located in the vacuum plumbing cabinet. In the open position, the chamber is exposed to external atmosphere through the intake • vent port located in the vacuum plumbing cabinet.
- Page 26 CONTROL OVERVIEW 26 | P a g e...
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Page 27: Operation
OPERATION Safe operation of the oven is dependent on the actions and behavior of the oven operators. Operating personnel must read and understand the Safety Guidelines and Operating Precautions in this section prior to operating the oven. The operators must follow these instructions to prevent injuries and to safeguard their health, the environment, and the materials being treated in the oven, as well as to prevent damage to the oven. -
Page 28: Theory Of Operation
OPERATION HEORY OF PERATION The SVAC9-2 is intended for use in closed cycle under vacuum applications such as drying, baking out volatiles, and evolutions of molecular clouds. Vacuum Vacuum is supplied to the oven chamber by a vacuum pump or building system. The vacuum supply is connected to one of the two (2) KF-25 fittings on the oven. - Page 29 OPERATION Heating in a Vacuum In conventional ovens, a powered element transfers 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, there is no atmosphere to transport heat evenly from the elements to the product.
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Page 30: Put The Oven Into Operation
OPERATION When running the oven at or near its maximum temperature for the first time, there may be Note: light smoking from protective oil coatings on the elements. UT THE VEN INTO PERATION Perform the following steps and procedures to prepare the oven for use in a new location. If this is the first use of the oven, press the red Push to Reset button to reset the heating element power relays. - Page 31 OPERATION Set the Temperature Set Point. page 32. Set the oven to the temperature of your constant temperature baking application or to the highest temperature of your multistep heating profile recipe. Doing so prepares the oven for setting the Over Temperature Limit.
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Page 32: Set The Constant Temperature Set Point
OPERATION When putting the oven into operation in a new location, set the constant temperature set point Note: equal to your application or the highest temperature of your multi-step heating profile. An active profile overrides the constant temperature set point. The constant temperature set Note: point cannot be adjusted while a heating profile is active. -
Page 33: Put The Chamber Under Vacuum
OPERATION UT THE HAMBER NDER ACUUM Procedure 1: Vacuuming down with a pump installed in the vacuum cabinet. Vacuum Down Turn the oven Vent Valve control to the closed position (all the way clockwise) VENT Turn the Vacuum Valve control to the closed position (all the way clockwise), if it is not already closed. - Page 34 OPERATION Procedure 2: Vacuuming down with an external vacuum supply connected to the KF-25 fitting on the back of the oven. Vacuum Down Turn the oven Vent Valve control to the closed position (all the way clockwise) VENT Turn the Vacuum Valve control to the closed position (all the way clockwise), if it is not already closed.
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Page 35: Set The Over Temperature Limit
OPERATION ET THE EMPERATURE IMIT This procedure sets the Over Temperature Limit heating cutoff to approximately 5˚C above the current temperature set point. If you will be running a heating profile run the oven at the highest temperature of the profile when setting the over temperature limit. Otherwise, set the oven to the steady state temperature set point of your application. -
Page 36: Heating Profiles
OPERATION OTL Activation During Normal Operations Possible causes: A user has set the Over Temperature Limit below the current set point for either an active • heating profile or single constant-temperature set point. An external heat source or heat source inside the chamber is causing the chamber air •... -
Page 37: User Maintenance
USER MAINTENANCE Warning: Disconnect the unit from its power supply prior to maintenance or service. Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon secteur de la source d'alimentation. LEANING AND ISINFECTING If a hazardous material or substance has spilled in the unit, immediately initiate your site Hazardous Material Spill Containment protocol. -
Page 38: Maintaining Atmospheric Integrity
USER MAINTENANCE Disinfecting Disinfect the oven if algae, mold, bacteria, or other biological contaminants are an issue. For maximum effectiveness, disinfection procedures are typically performed after cleaning. Keep the following points in mind: Turn off and unplug the unit to safeguard against electrical hazards. •... -
Page 39: Calibrate The Temperature Display
USER MAINTENANCE ALIBRATE THE EMPERATURE DISPLAY Performing a temperature display calibration requires a temperature reference device. Please see Note: Reference Sensor Devices entry on page 7 for device requirements. Temperature calibrations match the temperature display to the actual shelving temperature inside the oven chamber. The actual shelving temperature is supplied by a reference sensor device. - Page 40 USER MAINTENANCE 5 ) Heat up and stabilization period: The oven temperature must be stable at temperature and under vacuum in order to perform an accurate calibration. The temperature is considered stabilized when the oven chamber has operated at your calibration temperature for at least 30 minutes with no fluctuations greater than ±0.2°C.
- Page 41 USER MAINTENANCE Calibration Continued Place the controller display in the Operations menu. a. Press and hold both the Up and Down Arrow buttons simultaneously for approximately 3 seconds. b. Release the buttons when “A1” appears on the top display line and “oPEr” appears in the mid display line. Operations Menu Advance through the Operations menu to the Temperature Calibration offset parameter.
- Page 42 USER MAINTENANCE Calibration Continued Reference Device Once the chamber has stabilized, compare the reference temperature device and oven temperature display readings. a. If the readings are the same or the difference between the two falls within the acceptable range of your protocol, the display is accurately showing the chamber temperature.
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Page 43: Unit Specifications
UNIT SPECIFICATIONS The SVAC9-2 is a 230 AC voltage, single-phase unit. Please refer to the oven data plate for individual electrical specifications. Technical data specified applies to units with standard equipment at an ambient temperature of 25°C and a voltage fluctuation of ±10%. The temperatures specified are determined in accordance to factory standard following DIN 12880 respecting the recommended wall clearances of 10% of the height, width, and depth of the inner chamber. -
Page 44: Temperature Performance
± 0.3°C ± 0.2°C ± 0.2°C Heat up Times from Ambient (25°C) To 80°C To 150°C To 220°C 80 minutes 130 minutes 180 minutes OWER Model AC Voltage Amperage Frequency Phase 20.0 50/60 Hz SVAC9-2 44 | P a g e... -
Page 45: Replacement Parts
Description Parts Number Adjustable Feet 2700506 Oil Tray, for Vacuum Pump 5402470 Shelf, SVAC9-2 5680562 Shelf Clip 1250510 Viton O-Ring Gasket (60 inches OD, 3 inches ID) for Oven Door 3450579 Viton O-Rig Gasket (60 inches OD, 3 inches ID) for Door Window... - Page 46 P.O. Box 627 Cornelius, OR 97113 support@sheldonmfg.com sheldonmanufacturing.com 1-800-322-4897 (503) 640-3000 FAX: 503 640-1366...
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