Vacuum Oven 230 Voltage Installation and Operation Manual SVAC9-2 Previously designated as VPX9-2
SVAC9-2 Vacuum Oven 230 Voltage Previously designated VPX9-2 Vacuum Oven Installation and Operation Manual Part Number (Manual): 4861570 Revision: May 5, 2014 Pictured on front: Standard powder coat paint Below: Stainless steel exterior clean room option These units are TÜV CUE listed as vacuum ovens for professional, industrial, or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable, volatile, or combustible materials are being heate
TABLE OF CONTENTS INTRODUCTION........................................................................................................................................... 4 General Safety Considerations ................................................................................................................. 4 Engineering Improvements ....................................................................................................................... 4 Contacting Assistance .........................
INTRODUCTION Thank you for purchasing a Sheldon Manufacturing SVAC9-2 large capacity vacuum oven. We know that in today’s competitive marketplace, customers have many choices when it comes to constant temperature equipment. We appreciate you choosing ours. Our continued reputation as a leading laboratory product manufacturer rests with your satisfaction. Sheldon Manufacturing, Inc. stands behind our products, and we will be here if you need us.
INTRODUCTION (CONTINUED) CONTACTING ASSISTANCE If you are unable to resolve a technical issue with your vacuum oven, please contact Sheldon Technical Support. Phone hours for Sheldon Technical Support are 6am – 4:30pm Pacific Coast Time (west coast of the United States, UTC -8). Please have the following information ready when calling or emailing Technical Support: the model number and the serial number (see page 7). EMAIL: tech@shellab.
RECEIVING YOUR OVEN Before leaving our factory, all SVAC ovens are packaged in high-quality shipping materials to provide protection from transportation-related damage. When an oven leaves our factory, safe delivery becomes the responsibility of the carrier. Damage sustained during transit is not covered by the oven’s warranty. When you receive your SVAC9-2 oven, inspect it for concealed loss or damage to its interior and exterior.
RECEIVING YOUR OVEN (CONTINUED) RETURNING THE SHIPMENT If you must return the oven for any reason, first contact your service representative for a return of material authorization (RMA). You must provide the unit’s data plate information. See Recording Data Plate Information below. RECORDING DATA PLATE INFORMATION Locate the data plate on the back of the oven next to the power inlet. The data plate contains the oven model number and serial number. Enter this information below for future reference.
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 Indicates that you should consult your service manual for further instructions. Indique que l'opérateur doit consulter le manuel d'utilisation pour y trouver les instructions complémentaires.
INSTALLATION Installation of the unit requires permanent connect wiring (commonly known as hardwiring) and should be performed by a qualified electrical technician. All other steps can be performed by the end user. This oven is intended for use indoors at room temperatures between 15C and 40C (59F and 86F), at no greater than 80% Relative Humidity (at 25C / 77F).
INSTALLATION (CONTINUED) POWER SOURCE This oven is intended for a 230 volt, 20 Amp, 50/60 Hz application. Check the oven’s data plate to verify voltage and ampere requirements before connecting to a power source. The oven’s power feed must be wired into an earth grounded source. The power source for the oven must conform to all national and local electrical codes Supplied voltage must not vary more than 10% from the data plate rating. Damage to the oven may result if supplied voltage varies more than 10%.
INSTALLATION (CONTINUED) VACUUM PLUMBING The SVAC9-2 oven is provided with two (2) KF-25 vacuum fittings on its main vacuum line. The first is located on the back of the oven (Figure 2), and feeds directly into a 1 inch (2.54 cm) port in the back of oven chamber. A vacuum supply plumbed to this back fitting must have a control valve between the source and the fitting. A second KF-25 fitting plumbed to a 0.
INSTALLATION (CONTINUED) SHELVING INSTALLATION Perform the following steps to install the oven shelves: 1. Install the shelf clips in the slots located on the sides of the chamber interior, four (4) per shelf. 2. Squeeze each clip, insert the top tab first, and then the bottom tab using a rocking motion. 3. Hang the metal shelves from the clips. Figure 6: Shelving Clips CLEANING The oven interior was cleaned at the factory but not sterilized.
CONTROL OVERVIEW Figure 7: Control Panel SVAC9-2 and Watlow Temperature Controller Watlow Controller Details THE EASY ZONE KEY 1 INITIATES AND ENDS HEATING PROFILES CURRENT OVEN CHAMBER TEMPERATURE 20.0 C THE RESET KEY SCROLLS 1 PAGE BACK EZ1 RES E T THE UP ARROW KEY ADJUSTS SET POINTS OR CHANGES PARAMETERS 20.
CONTROL OVERVIEW (CONTINUED) Main Temperature Controller The main temperature control is labeled TEMPERATURE SET, and consists of a Watlow EZ-Zone Controller. The control is provided with a digital display and up / down arrow keys for adjusting the oven’s temperature set point, performing a calibration, and choosing pages and adjusting parameter settings while setting up heating profiles. The EZ1 button is used to launch and abort programmed heating profile (see the Programmed Operations section).
CONTROL OVERVIEW (CONTINUED) VALVES AND CIRCUIT BREAKERS Vacuum Valve This valve is located just below the control panel in a recessed box, and marked VACUUM. It adjusts the amount vacuum applied to the chamber, when the vacuum is supplied from the KF-25 fitting located in the bottom cabinet. Turning the valve counterclockwise applies vacuum to the main vacuum line and oven chamber. Clockwise closes off the supply. Vent Valve This valve is located to the left of Vacuum Valve.
OPERATION OPERATING PRECAUTIONS Warning: The SVAC9-2 oven is not an explosion proof unit! The oven is not designed to safely contain combustible gasses. Do not place explosive, combustible, or flammable materials into the chamber. 1. Close and latch the door by swinging the latching arm into place. Then turn the knob clockwise until it grabs and the door is snug against the body. This will ensure a good seal. 2.
OPERATION (CONTINUED) THEORY OF OPERATION The SVAC9-2 is intended for use in closed-cycle, under-vacuum applications such as, drying, baking out volatiles, and evolutions of molecular clouds. The oven is not built to operate exposed to free atmosphere or circulate air within the chamber. Running the oven with the door or vent open risks damaging the vacuum pump and the integrity of the oven.
OPERATION (CONTINUED) SETTING UP THE OVEN Perform the following steps and procedures to set up the oven after installing it. See the Installation section for power source and placement requirements, as well as vacuum source information. 1. If this is the oven’s first use, press the red control panel reset button to reset the heating element power relays. Otherwise the oven will not be able to heat or power the Watlow temperature controller and display.
OPERATION (CONTINUED) FIRST USE BURN IN (RECOMMENDED) This procedure helps to eliminate smoking from the heating elements’ protective coatings above 150˚C. Running the oven at room pressure or under vacuum will not affect the burn in process. 1. If you have not already done so, turn the Over Temperature Control knob all the way clockwise to its maximum setting. 2.
OPERATION (CONTINUED) For a Vacuum Source Plumbed to Back KF-25 Fitting 1. Make sure the vent and vacuum valves on the front of the oven are closed (turned fully clockwise). 2. Turn the oven on using the power switch. 3. Use the control plumbed between the vacuum source and KF-25 fitting to bring the oven under vacuum to the level that it will be used at during its application or process. 4. Turn the oven power switch OFF. 5.
OPERATION (CONTINUED) CALIBRATING THE UNIT The oven should be installed in its workspace environment when performing a temperature calibration to ensure the best possible accuracy. Always calibrate the oven to the temperature that will be used in the oven’s application or process. If a multi-step heating profile will be used, calibrate the oven to the temperature that will be used during the longest soak (constant temperature) step. 1.
OPERATION (CONTINUED) The difference between the reference device and oven display is called an offset. Examples of offsets: Reference Sensor Reading Watlow Temp. Display Offset Value 152°C 150°C 2 148°C 150°C -2 8. To enter the temperature offset into the Watlow Controller, press and hold both Up and Down Arrow Button simultaneously for approximately three (3) seconds until “A1” appears in the Upper Display and “Oper” appears in the Lower Display. 9.
OPERATION (CONTINUED) PROGRAMMED OPERATIONS The Watlow controller can hold four (4) ten-step heating profiles. Additionally, profiles may be combined by programing profile steps sequentially to run as a single profile of between two (2) and forty (40) steps. Please see the Programing Guide – Watlow EZ-Zone Controller Heating Profiles document, which comes included with the SVAC9-2, for instructions on how to program heating profiles.
USER MAINTENANCE Warning: Prior to any maintenance or service on this unit, disconnect the power feed from the power supply. Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon secteur de la source d'alimentation. If a hazardous material/substance has spilled in the oven, immediately initiate your site’s Hazardous Material Spill Containment protocol. Contact your local Site Safety Officer and follow instructions per the site policy and procedures.
MAINTENANCE (CONTINUED) Periodically, inspect the door latch, trim, catch, and gasket for signs of deterioration. Failure to maintain the integrity of the door system shortens the life span of the Oven. Electrical components do not require maintenance. If the oven fails to operate as specified, please contact your Shel Lab distributor or Sheldon Manufacturing Technical Support for assistance.
UNIT SPECIFICATIONS This oven is a 230 AC voltage unit. Please refer to the oven’s 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.
UNIT SPECIFICATIONS (CONTINUED) TEMPERATURE Model SVAC9-2 (VPX9-2) Model SVAC9-2 (VPX9-2) Range Uniformity Stability Ambient. +15 to 220C + 5C @ 150C ± 0.
REPLACMENT PARTS LIST Description Parts Number Adjustable Feet 2700506 Shelf 1495 5680562 Shelf Clip 1250510 Viton O-Ring Gasket (60 inch OD 3 inch ID) for Oven Door 3450579 Viton O-Rig Gasket (60 inch OD 3 inch ID) for Oven Window 3450560 28 | P a g e
