Shel Lab SGO5 User Manual
GRAVITY OVENS 110 – 120 Voltage
Installation - Operation Manual
SGO1 SGO3 SGO5
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SGO Gravity Ovens 110 – 120 Voltage
Part Number (Manual): 4861727
Revision: March 30, 2018
Pictured on Cover: Left to right SGO1, SGO3, SGO5
SLG122, SLG322, SLG522
SHEL LAB is a brand of Sheldon Manufacturing, INC.
Safety Certifications
These units are CUE listed by TÜV SÜD as gravity 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 –
31.3 inHg (75 – 106 kPa) and no flammable, volatile, or combustible materials are being heated.
The units have been tested to the following requirements:
CAN/CSA-22.2 No. 61010-1:2012/U2:2016-04
CAN/CSA-C22.2 No. 61010-2-010:2015
UL 61010-1:2012/R:2016-04
UL 61010-2-010:2015
EN 61010-1:2010
EN 61010-2-010:2014
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TABLE OF CONTENTS
INTRODUCTION ........................................................................................................................................................ 5
Read this Manual .................................................................................................................................................................... 5
Safety Considerations and Requirements ...................................................................................................................... 5
Contacting Assistance .......................................................................................................................................................... 6
Engineering Improvements.................................................................................................................................................. 6
Reference Sensor Device .................................................................................................................................................... 7
RECEIVING YOUR UNIT ........................................................................................................................................... 9
Inspect the Shipment ............................................................................................................................................................. 9
Orientation Photos ............................................................................................................................................................... 10
Recording Data Plate Information ................................................................................................................................... 14
INSTALLATION ......................................................................................................................................................... 15
Installation Procedure Checklist ...................................................................................................................................... 15
Required Ambient Conditions ........................................................................................................................................... 16
Required Ventilation Clearances ..................................................................................................................................... 16
Power Source Requirements ............................................................................................................................................. 17
Lifting and Handling ............................................................................................................................................................ 18
Leveling ................................................................................................................................................................................... 18
Install the Oven ..................................................................................................................................................................... 19
Deionized and Distilled Water .......................................................................................................................................... 19
Installation - Clean and Disinfect ..................................................................................................................................... 19
Shelving Installation............................................................................................................................................................ 20
Access Port Stopper ........................................................................................................................................................... 20
GRAPHIC SYMBOLS ................................................................................................................................................ 21
CONTROL PANEL OVERVIEW .............................................................................................................................. 23
OPERATION.............................................................................................................................................................. 25
Operating Precautions ....................................................................................................................................................... 25
Theory of Operation ........................................................................................................................................................... 26
Put the Oven into Operation ............................................................................................................................................ 28
Set the Temperature Set Point ........................................................................................................................................ 29
Set the Over Temperature Limit ...................................................................................................................................... 30
Setting the Timer .................................................................................................................................................................. 31
Launching a Heating Profile ............................................................................................................................................. 33
High Exterior Temperatures ............................................................................................................................................. 34
Drying Racks and other Accessories ............................................................................................................................. 34
USER MAINTENANCE ............................................................................................................................................. 35
Cleaning and Disinfecting ................................................................................................................................................. 35
Gaskets and Chamber Integrity ...................................................................................................................................... 36
Electrical Components ....................................................................................................................................................... 36
Calibrate the Temperature Display ................................................................................................................................. 37
UNIT SPECIFICATIONS ........................................................................................................................................... 41
Weight ...................................................................................................................................................................................... 41
Dimensions ............................................................................................................................................................................. 41
Capacity .................................................................................................................................................................................. 41
Shelf Capacity by Weight .................................................................................................................................................. 42
Temperature ......................................................................................................................................................................... 42
Power ...................................................................................................................................................................................... 43
PARTS LIST ............................................................................................................................................................... 45
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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.
READ THIS MANUAL
Failure to follow the guidelines and instructions in this user manual may create a protection
impairment by disabling or interfering with the unit safety features. This can result in injury or death.
Before using the unit, read the manual in its entirety to understand how to install, operate, and
maintain the unit in a safe manner. Keep this manual available for use by all operators. Ensure all
operators are given appropriate training before the unit begins service.
SAFETY CONSIDERATIONS AND REQUIREMENTS
Follow basic safety precautions, including all national laws, regulations, and local ordinances in your
area regarding the use of this unit. If you have any questions about local requirements, please
contact the appropriate agencies.
SOPs
Because of the range of potential applications this unit can be used for, the operator or their
supervisors must draw up a site-specific standard operating procedure (SOP) covering each
application and associated safety guidelines. This SOP must be written and available to all operators
in a language they understand.
Intended Applications and Locations
SGO gravity ovens are engineered for constant temperature drying, curing, and baking applications
in professional, industrial, and educational environments. The ovens are not intended for use at
hazardous or household locations.
Power
Your unit and its recommended accessories are designed and tested to meet strict safety
requirements.
• The unit is designed to connect to a power source using the specific power cord type
shipped with the unit.
• Always plug the unit power cord into a protective earth grounded electrical outlet
conforming to national and local electrical codes. If the unit is not grounded properly, parts
such as knobs and controls can conduct electricity and cause serious injury.
• Do not bend the power cord excessively, step on it, or place heavy objects on it.
• A damaged cord can be a shock or fire hazard. Never use a power cord if it is damaged or
altered in any way.
• Use only approved accessories. Do not modify system components. Any alterations or
modifications to your unit not explicitly authorized by the manufacturer can be dangerous
and will void your warranty.
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INTRODUCTION
CONTACTING ASSISTANCE
Phone hours for Sheldon Technical Support are 6 am – 4:30 pm Pacific Coast Time (west coast of
the United States, UTC -8), Monday through Friday. Please have the following information ready
when calling or emailing Technical Support: the model number and the serial number (see page 14).
EMAIL: support@sheldonmfg.com
PHONE: 1-800-322-4897 extension 4, or (503) 640-3000
FAX: (503) 640-1366
Sheldon Manufacturing, INC.
P.O. Box 627
Cornelius, OR 97113
ENGINEERING IMPROVEMENTS
Sheldon Manufacturing, Inc. 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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Temperature
INTRODUCTION
REFERENCE SENSOR DEVICE
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 1°C
The device should be regularly calibrated, preferably by a third party.
Temperature Probes
Use a digital device with wire thermocouple probes that can be introduced into the oven chamber
through the unit access port. Select thermocouples suitable for the application temperature you will be
calibrating at.
Why Probes?
Reference readings taken outside the chamber using wire temperature probes avoid chamber door
openings. Openings disrupt the chamber temperature. Each disruption requires a minimum 1-hour wait
to allow the atmosphere to re-stabilize before continuing.
No Alcohol or Mercury Thermometers
Alcohol thermometers do not have sufficient accuracy to conduct accurate temperature calibrations.
Never place a mercury thermometer in the unit chamber. Always use thermocouple probes.
Reference
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INTRODUCTION
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RECEIVING YOUR UNIT
INSPECT THE SHIPMENT
• 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.
• Save the shipping carton until you are certain the unit and its accessories function properly.
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.
1. Carefully inspect the shipping carton for damage.
2. Report any damage to the carrier service that delivered the unit.
3. If the carton is not damaged, open the carton and remove the contents.
4. Inspect the unit for signs of damage. See the orientation depiction on the next page as a
reference.
5. The unit should come with an Installation and Operation Manual.
6. Verify that the correct number of accessory items has been included.
7. A high-temperature access port stopper ships installed in the port located on the back of the
oven. Verify the presence of the stopper.
8. Carefully check all packaging for accessory items before discarding.
Included Accessories
4 Leveling
Feet
1 Power Cord
8 Shelf Clips
Shelves
SGO1 SGO3 SGO5
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Figure
Exhaust Port with Sliding Dampener
Main Temperature and OTL Sensor Probes
Door Latch
Chamber
Chamber Gasket
Access Port
Oven Chamber
Control Panel
RECEIVING YOUR UNIT
ORIENTATION PHOTOS
1: SGO5
Door
Handle
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Figure
Exhaust Port with Sliding Dampener
Main Temperature
Door Latch
Chamber
Control Panel
Chamber Gasket
Access Port
Oven Chamber
RECEIVING YOUR UNIT
2: SGO3
and OTL Sensor
Probes
Door
Handle
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Figure
Door Latch
Control Panel
Access Port
Oven Chamber
Exhaust Port with Sliding Dampener
Chamber Gasket
Main Temperature
RECEIVING YOUR UNIT
3: SGO1
and OTL Sensor
Probes (Under Shelf)
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Figure
Exhaust Vent
Fan
Access Port (Stopper Installed)
Power Cord Inlet with Fuse
RECEIVING YOUR UNIT
4: Unit Back
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RECEIVING YOUR UNIT
RECORDING DATA PLATE INFORMATION
The data plate contains the unit model number and serial number. Tech 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 inlet.
Model Number
Serial Number
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INSTALLATION
INSTALLATION PROCEDURE CHECKLIST
For installing the oven in a new workspace.
Pre-Installation
Check that the required workspace ambient conditions for the unit are
met, page
• Unit dimensions may be found on page 41
Check that the required ventilation and spacing requirements are met,
page
Check that a suitable electrical outlet and power supply is present, page 17.
16.
16.
Installing the oven in a suitable workspace location
Review the lifting and handling instructions, page 18.
Install the unit in its workspace location, page 18.
Make sure the unit is level, page 18.
Set up the oven for use
Clean the unit chamber and shelving if needed, page 19.
Install the shelving in the unit chamber, page 20.
Verify the stopper is installed in the access port on the outside of the oven,
20.
page
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