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OPERATION  

6.1 

Power  Supply:

  The  power  supply  must  be  properly  grounded  (earthed)  and 

correctly sized to match the unit data plate rating.  The supply voltage must match 
the data plate voltage within 10%.  If supplied with a detachable cord set, plug the 
female end into the inlet on the unit and the male plug into the supply.  Assure that 
units requiring a fuse have a fuse installed.   

6.2

 

Push  the  power  switch  to  the  ON  position  and  turn  the  Over  Temperature 
Thermostat  to  its  maximum  position,  clockwise  so  it  will  not  interrupt  the  setting  of 
the Main Temperature control. 

6.3

 

Place the reference thermometer through the exhaust port on top of the unit; a clip is 
provided with your accessory package.  See 

Figure 3 

on the following page. 

6.4 

Setting  Main  Temperature:

  The  operating  range  for  this  oven  is  ambient  room 

tempe 5

C to 200

C.  To set the Main Temperature Controller turn the knob 

to  the  desired  oven  temperature,  using  the  graduated  dial  as  a  reference  guide.  
Allow  one  hour  for the temperature to stabilize.  Using the reference thermometer, 
verify the oven temperature; if it is not at the desired value, turn the control knob up 
or  down  as  needed.    Allow  the  temperature  to  re-stabilize,  continuing  the  process 
until the exact desired temperature is achieved. 

Note: Slight vapor or smoke may occur in the initial heat-up.  This is a normal 
occurrence  when  the  oven  is  first  brought  up  to  temperature  and  protective 
coatings on the element become hot.

 

6.5 

Setting Over Temperature:

 As stated in earlier, the Thermostat should be set to its 

maximum  position.  Now  turn  the  control  knob  counterclockwise  just  until  the 
OVERTEMPERATURE  ACTIVATED  light  comes  on.    Next,  slowly  turn  the  control 
knob clockwise just until the light goes off.  Then turn the control knob clockwise two 
(2)  minor  scale  divisions  past  the  point  where  the  light  went  out.    The  Over 
Temperature Thermostat should now be set at approximately 10

C above the Main 

Temperature set point. Note that it is not recommended that the unit be allowed to 
operate  using  the  Over  Temperature  Thermostat  as  the  temperature  controller  for 
an  extended  period  of  time.    See  the  Troubleshooting  section  if  the  Thermostat  is 
activated. 

Section 

Summary of Contents for SMO1E

Page 1: ...ATED AS 1321F 1321F 2 1325F 1325F 2 1327F 1327F 2 INSTALLATION AND OPERATION MANUAL Revised 12 2013 4861659 Sheldon Manufacturing Inc P O Box 627 Cornelius Oregon 97113 EMAIL tech Shellab com INTERNET http www Shellab com Shellab 1 800 322 4897 503 640 3000 FAX 503 640 1366 ...

Page 2: ...N 8 0 TROUBLESHOOTING SECTION 9 0 PARTS LIST UNIT SPECIFICATIONS WIRE DIAGRAM This unit is a special purpose oven 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 or placed near or on top of unit This unit is not intended for hazardous or hou...

Page 3: ...e freight bill any damage found and enter your claim on the form supplied by the carrier 1 2 Inspect for concealed loss or damage on the unit itself both interior and exterior If any the carrier will arrange for official inspection to substantiate your claim 1 3 Return Shipment Save the shipping carton until you are sure all is well If for any reason you must return the unit first contact your cus...

Page 4: ... that you should consult your manual for further description or discussion of a control or user item 2 2 Indicates AC Power 2 3 Indicates Adjustable Temperature 2 4 Indicates Manual Control 2 4 Indicates Heating 2 5 Indicates Over Temperature 2 6 Indicates Protective Earth Ground 2 7 Indicates Potential Shock Hazard 2 8 Indicates Unit should be recycled Not disposed of in land fill Section 2 ...

Page 5: ...struct free airflow 3 3 Lifting Handling These units are heavy and care should be taken to use appropriate lifting devices that are sufficiently rated for these loads Units should only be lifted from their bottom surfaces Doors handles and knobs are not adequate for lifting or stabilization The unit should be completely restrained from tipping during lifting and transport All moving parts such as ...

Page 6: ...6 3 6 Shelves Place shelves in the chamber at desired position See Figure 1 Figure 1 ...

Page 7: ...cycle on and off as the elements maintain the temperature selected 4 4 Over Temperature Thermostat Marked SET OVERTEMPERATURE this control is completely independent of the Main Temperature control and is equipped with an adjustment knob that requires a flat edged tool when making adjustments to eliminate accidental changes It provides safety temperature protection for the oven If for any reason th...

Page 8: ...Do not place explosive combustible or flammable materials into the chamber 5 4 Some of the out gassed byproducts may be hazardous or unpleasant to operating personnel If this is the case the exhausts should be positively ventilated to the outside and dealt with according to local regulations Your dealer can provide you with a power exhaust that greatly helps under these applications 5 5 Do not pla...

Page 9: ...temperature to stabilize Using the reference thermometer verify the oven temperature if it is not at the desired value turn the control knob up or down as needed Allow the temperature to re stabilize continuing the process until the exact desired temperature is achieved Note Slight vapor or smoke may occur in the initial heat up This is a normal occurrence when the oven is first brought up to temp...

Page 10: ...10 Figure 3 ...

Page 11: ... that will harm coatings WARNING Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply Always disconnect the unit from the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply 7 2 Storage If the unit is to be shut down for an extended period of time wi...

Page 12: ... with the controller 2 check amperage amperage should be virtually at maximum rated data plate amperage 3 is the Thermostat set high enough for diagnostics should be fully clockwise with the pilot light never on 4 has the fuse circuit breaker blown Will not maintain set point 1 assure that set point is at least 5 degrees over ambient room temperature 2 see if ambient is fluctuating MECHANICAL Door...

Page 13: ...re Controller 1750863 1750863 Motor 4880527 4880528 On Off I O Switch 7850570 7850570 Over Temperature Thermostat 1750615 1750648 Pilot Light green 4650554 4650554 Pilot Light red 4650553 4650553 Shelf Clips 1250511 150511 Shelf 5080539 5080539 Thermometer 8200509 8200509 Thermometer Clip 5080865 5080865 UNIT SPECIFICATIONS Weight Unit Shipping Net SMO1E SMO1E 2 1321F 1321F 2 67 lbs 60 lbs Dimensi...

Page 14: ...Clips 1250511 1250511 Shelf 5500629 5500629 Thermometer Clip 5080865 5080865 Thermometer 8200509 8200509 Fan Motor 4880527 4880528 Fan Blade 3 2600545 2600545 Fan Blade 4 75 2600502 2600502 Filter EMI 2800502 2800502 Fuse 3300516 3300515 Inlet with Fuse Drawer 4200505 4200505 Fuse Holder N A 3300501 UNIT SPECIFICATIONS Weight Shipping Net SMO3E SMO3E 2 1325F 1325 2 125 lbs 85 lbs Dimensions Exteri...

Page 15: ...0554 Pilot Light Red 4650553 4650553 Shelf Clips 1250511 1250511 Shelf 5130714 5130714 Thermometer Clip 5080865 5080865 Thermometer 8200509 8200509 Filter EMI 2800502 2800502 Fuse 3300516 3300515 Inlet with Fuse Drawer 4200505 4200505 Fuse Holder N A 3300501 UNIT SPECIFICATIONS Weight Shipping Net SMO5E SMO5E 2 1327F 1327F 2 153 lbs 113 lbs Dimensions Exterior WxDxH Interior WxDxH SMO5E SMO5E 2 13...

Page 16: ...T WHITE HT TAN ULTRA HT TAN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 OTL 1750615 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 550W 24Ω FAN FAN MOTOR 4880527 ...

Page 17: ...TAN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 1 2 4 WHITE HT TOP OTL 1750648 BOTTOM OTL 1750648 550W 96Ω FAN FAN MOTOR 4880528 ...

Page 18: ...T TAN ULTRA HT TAN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 OTL 1750615 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 750W 2350563 FAN FAN MOTOR 4880527 ...

Page 19: ...TAN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 1 2 4 WHITE HT TOP OTL 1750648 BOTTOM OTL 1750648 750W 76Ω FAN FAN MOTOR 4880528 ...

Page 20: ...T TAN ULTRA HT TAN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 OTL 1750615 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 1000W 2350557 FAN FAN MOTOR 4880527 ...

Page 21: ...AN ULTRA HT BLACK HT BLACK HT BLACK HT WHITE HT WHITE HT BLACK BLACK BLACK BLACK POWER INLET 4200505 GREEN LIGHTED POWER SWITCH 7850570 TEMPERATURE CONTROL 1750863 HEATING INDICATOR 4450554 OTL INDICATOR 4450553 1 2 4 WHITE HT TOP OTL 1750648 BOTTOM OTL 1750648 1000W 57 3Ω FAN FAN MOTOR 4880528 ...

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