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INTRODUCTION 

Thank you for purchasing a Sheldon Manufacturing SMO Forced Air Oven. We know tha

t 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 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.   

G

ENERAL 

S

AFETY 

C

ONSIDERATIONS

 

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: 

 

Follow any local or regional ordinances in your area regarding the use of this unit. 

 

Only use the oven for its intended range of applications. 

 

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 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. 

E

NGINEERING 

I

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. 

Summary of Contents for FX14-2

Page 1: ...Installation and Operation Manual SMO14 2 SMO28 2 Previously designated as FX14 2 FX28 2 Forced Air Ovens 230 Voltage...

Page 2: ...ional 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 Thes...

Page 3: ...Lifting and Handling 11 Leveling 11 Shelving Installation 13 Cleaning 14 Burn In 14 OPERATION 15 Operating Precautions 15 Setting up the Oven 15 Burn In First Use 16 Setting the Temperature Controlle...

Page 4: ...of your oven always follow basic safety precautions including Follow any local or regional ordinances in your area regarding the use of this unit Only use the oven for its intended range of applicati...

Page 5: ...ldon 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 a...

Page 6: ...nstallation and Operation Manual warranty card and a Certificate of Compliance Verify that the correct number of shelves shelf slides and leveling feet have been included see the following table for q...

Page 7: ...perature Limit system Indique le syst me de d passement de temperature Indicates AC Power Rep re le courant alternative Indicates I ON and O OFF I rep re de la position MARCHE de l interrupteur d alim...

Page 8: ...mbol Definition Indicates the timer Indique le minuterie Start or Stop the Timer Lancer ou arr ter le minuteur Reset the Timer R initialisation de la Minuterie Indicates Caution hot surface Indique Av...

Page 9: ...which would allow the temperature to rise past the Main Controller s set point This allows continued operation of the oven in the event of a Main Controller failure until the problem can be corrected...

Page 10: ...his control consists of a green LED numerical display and an UP DOWN arrow pad used for inputting set point temperatures and calibration offsets Heating Activated Light The green pilot light labeled H...

Page 11: ...ity 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 Dir...

Page 12: ...nductor terminal green with yellow stripe wire Do not remove the protective conductor earth connection Removing the protective conductor will negate the oven s protections against potentially dangerou...

Page 13: ...to install the SMO shelves 1 Install the shelf clips in the slots located on the sides of the chamber interior front and back 2 Squeeze each clip insert the top tab first and then the bottom tab using...

Page 14: ...eaning topic in the User Maintenance section for more information BURN IN The oven should be run through a burning in process before being used for normal operations This is done to eliminate smoking...

Page 15: ...defined by the US National Electric Code Warning The vent dampers may be hot to the touch These areas are marked with Hot Surface labels Proper PPE should be employed to minimize risk to burn Avertiss...

Page 16: ...lay will cease blinking and show the current chamber temperature 8 A temperature set point of 200 C is now entered in the oven and the oven will begin heating toward 200 C 9 Run the oven for a minimum...

Page 17: ...protocol the oven is calibrated 5 If there is a temperature difference between the oven s display and that of the temperature sensing device which falls outside your laboratory protocol s acceptable r...

Page 18: ...mum position if it s not already there This allows the oven to stabilize at its current set point 2 Turn the Set Over Temperature Limit control dial counterclockwise until the red OVER TEMPERATURE ACT...

Page 19: ...inutes and then single minutes 3 Press and hold the Rest button until the Timer Display begins to blink with a decimal point illuminated between the 2nd and 3rd digits 4 Use the Up and Down Arrow pad...

Page 20: ...ressing the black Timer switch 2 Press the Start Stop T button 3 The oven will now heat to and run at the user selected temperature set point for the duration of the user selected heating cycle time p...

Page 21: ...g Never clean the oven with alcohol or flammable cleaners Avertissement Ne jamais nettoyer l appareil l alcool ou avec des nettoyants inflammables Note Do not use spray cleaners or disinfectants that...

Page 22: ...ns 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 p...

Page 23: ...dications are average values typical for units produced in the series We reserve the right to alter technical specifications at all times WEIGHT Model Shipping Net Weight SMO14 2 FX14 2 360lbs 163kgs...

Page 24: ...ge Uniformity Stability SMO14 2 FX14 2 Ambient 15 to 260 C 3 0 150 C 0 2 C SMO28 2 FX28 2 Ambient 15 to 260 C 3 5 150 C 0 2 C Model Heat Up Time to 150 Recovery to 150 SMO14 2 FX14 2 24 minutes 8 minu...

Page 25: ...25 P a g e PARTS LIST PARTS Description Parts Number Adjustable Feet 2700506 Shelf Clip 1250512 Shelf SMO14 2 FX14 2 and SMO28 2 FX28 2 995 00006...

Page 26: ......

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