Shellab SVAC9-2 User Manual
Installation and
Operation Manual
SVAC9-2
Previously designated as
VPX9-2
Vacuum Oven 230 Voltage
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 heated.
These units have been tested to the following requirements:
CAN/CSA C22.2 No. 61010-1:2012
CAN/CSA C22.2 No. 61010-2-010 + R:2009
UL 61010A-2-010:2002
UL 61010-1:2012
EN 61010-1:2010
EN 61010-2-010:2003
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TABLE OF CONTENTS
INTRODUCTION ........................................................................................................................................... 4
General Safety Considerations ................................................................................................................. 4
Engineering Improvements ....................................................................................................................... 4
Contacting Assistance ............................................................................................................................... 5
Clean Room Option ................................................................................................................................... 5
RECEIVING YOUR OVEN ............................................................................................................................ 6
Inspecting the Shipment ............................................................................................................................ 6
Vacuum Pump ........................................................................................................................................... 6
Gaskets ..................................................................................................................................................... 6
Returning the Shipment ............................................................................................................................ 7
Recording Data Plate Information ............................................................................................................. 7
GRAPHIC SYMBOLS ................................................................................................................................... 8
INSTALLATION ............................................................................................................................................ 9
Location ..................................................................................................................................................... 9
Lifting and Handling .................................................................................................................................. 9
Power Source .......................................................................................................................................... 10
Leveling ................................................................................................................................................... 10
Vacuum Plumbing ................................................................................................................................... 11
Vent and Gas Plumbing .......................................................................................................................... 11
Shelving Installation ................................................................................................................................ 12
Cleaning .................................................................................................................................................. 12
Burn In ..................................................................................................................................................... 12
CONTROL OVERVIEW .............................................................................................................................. 13
Valves and Circuit Breakers .................................................................................................................... 15
OPERATION ............................................................................................................................................... 16
Operating Precautions ............................................................................................................................ 16
Theory of Operation ................................................................................................................................ 17
Setting up the Oven ................................................................................................................................ 18
First Use Burn In (Recommended) ......................................................................................................... 19
Verify Vacuum Functionality and Integrity ............................................................................................... 19
Setting the Temperature Controller Set Point ......................................................................................... 20
Calibrating the Unit .................................................................................................................................. 21
Setting the Over Temperature Limit Control ........................................................................................... 22
Programmed Operations ......................................................................................................................... 23
USER MAINTENANCE ............................................................................................................................... 24
Cleaning .................................................................................................................................................. 24
Disinfecting .............................................................................................................................................. 24
Storage .................................................................................................................................................... 25
Vacuum Pump Maintenance ................................................................................................................... 25
Unit SPECIFICATIONS .............................................................................................................................. 26
Weight ..................................................................................................................................................... 26
Dimensions .............................................................................................................................................. 26
Capacity .................................................................................................................................................. 26
Shelf Capacity by Weight ........................................................................................................................ 26
Temperature ............................................................................................................................................ 27
Power ...................................................................................................................................................... 27
REPLACMENT PARTS LIST ..................................................................................................................... 28
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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.
These vacuum ovens are intended for professional, industrial, and educational applications. The
ovens are not intended for use at hazardous or household locations.
Before you use the oven read this entire manual carefully to understand how to install, operate, and
maintain the oven in a safe manner. Keep this manual available for use by all oven operators.
Ensure that all operators are given appropriate training before the oven begins service.
Note: Failure to follow the guidelines and instructions in this manual may create a protection
impairment by disabling or interfering with the unit’s safety features. This can result in injury
or death.
GENERAL SAFETY CONSIDERATIONS
Your oven and its recommended accessories have been designed and tested to meet strict safety
requirements.
For continued safe operation of your oven, always follow basic safety precautions including:
Only use this equipment for its intended range of applications.
Follow any local or regional ordinances in your area covering the use of this unit.
Use only approved accessories. Do not modify system components. Any alterations or
modifications to your oven may be dangerous and will void your warranty.
Always hardwire the unit’s power feed to an earth grounded electrical source that conforms
to national and local electrical codes. If the unit is not earth grounded, parts such as, knobs
and controls may conduct electricity and cause serious injury.
Avoid damaging the power feed. Do not bend it excessively, step on it, place heavy objects
on it. A damaged power feed can easily become a shock or fire hazard. Never use a power
feed after it has been damaged.
Do not position the equipment in such a manner as to make it difficult to disconnect or
uncouple the power feed.
Do not attempt to move the unit while in operation or before the unit has cooled.
ENGINEERING IMPROVEMENTS
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.
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Figure 1: SVAC9-2 with Stainless Steel
Exterior
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.com PHONE: 1-800-322-4897 extension 2, or (503) 640-3000 FAX: (503)
640-1366
CLEAN ROOM OPTION
An optional stainless steel exterior is available for
the SVAC9-2 from Sheldon Manufacturing.
Suitable for many cleanroom applications, the
paint-free exterior surfaces are corrosion resistant
and help to prevent contamination from paint
flecking and surface particle retention. 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.
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Shelves
Shelf Clips
Leveling Feet
Oil Drain Tray
3
12
4
1*
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. If you find any damage to the oven, then follow the carrier’s procedure for claiming
damage or loss.
INSPECTING THE SHIPMENT
Carefully inspect the shipping carton for damage. Report any damage to the carrier service that
delivered the SVAC oven. If the carton is not damaged, open the carton and remove the contents.
The unit should come with an Installation and Operation Manual, warranty card, and a Certificate of
Compliance, the simplified Watlow EZ-Controller Programing Guide, and a Watlow EZ-Zone User
Manual.
Verify that the correct number of shelves, shelf slides, and leveling feet have been included (see
the following table for quantities). The oven is not supplied with a vacuum pump.
Included accessories
*The oil drain tray included for use with vacuum pumps that produce oil leakage.
Carefully check all packaging before discarding. Save the shipping carton until you are certain that
the unit and its accessories function properly.
VACUUM PUMP
The SVAC9-2 does not come supplied with a vacuum pump. All maintenance and instructional
information should be obtained from the pump manufacturer, if it not shipped with the pump.
Sheldon Manufacturing offers vacuum pumps for sale compatible with a variety of applications and
processes.
Mounting studs and an outlet for powering a vacuum pump are installed in the cabinet inside the
base of the oven. See the Vacuum Plumbing entry in the Installation section (page 11) for more
information on plumbing.
GASKETS
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.
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Model Number
Serial Number
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.
Date Plate Information
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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.
Indicates the Over Temperature Limit system
Indique le système de dépassement de temperature
Indicates AC Power
Repère le courant alternative
Indicates I/ON and O/OFF
I repère de la position MARCHE de l'interrupteur d'alimentation
O repère de la position ARRÊT de l'interrupteur d'alimentation
Indicates vacuum pump is active.
Indique la pompe à vide est active.
Indicates a Manually Adjustable control
Indique un bouton réglable manuellement
Indicates a Potential Shock Hazard
Signale danger électrique
WEEE Directive compliant logo
Indicates the unit should be recycled (Not disposed of in land-fill)
Indique l’appareil doit être recyclé (Ne pas jeter dans une décharge)
Indicates protective earth ground
Repère terre électrique
Indicates: Caution hot surface
Indique: Avertissement symbole de surface chaude
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.
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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). Allow a minimum of 12 inches
(30cm) between the oven and any walls or partitions, as well as 12 inches (30cm) of vertical
headspace clearance above the top of the oven for unobstructed airflow and cooling.
Operating the unit outside of these conditions may adversely affect the temperature range and
stability.
For conditions outside those listed above, please contact your distributor or Sheldon Sales to
explore other ovens suited to your laboratory or production environment.
LOCATION
When selecting a location to install the oven, consider all environmental conditions that can affect
unit’s effective temperature range, uniformity, and stability. For example:
Other ovens, autoclaves, and any device that produces significant radiant heat
Heating and cooling ducts, or other sources of fast moving air currents
High-traffic areas
Direct sunlight
LIFTING AND HANDLING
The oven is heavy. Use appropriate lifting devices that are sufficiently rated for these loads. Follow
these guidelines when lifting the oven:
Lift the oven only from its bottom surface.
Doors, handles, and knobs are not adequate for lifting or stabilization.
Restrain the oven completely while lifting or transporting so it cannot tip.
Remove all moving parts, such as shelves and trays, and lock doors in the closed position
during transfers to prevent shifting and damage.
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