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Oven Safety Reset- 

To protect the oven’s electrical components and for the safety 

of the user, if the unit exceeds its maximum temperature, an internal safety “snap disc” 

will cut power OFF to the oven until it is manually reset (FIG.6). 

     To Reset

 - disconnect the oven from power. Next, lay the oven on its back and 

remove the bottom cover. Locate the round  “snap disc” and push on the button to reset.  

Maintenance /  Cleaning Procedures  / Common Replacement  Parts

The AF Lab Series Ovens are designed to be virtually maintenance free,

  but operational safety requires periodic  

cleaning  and  chamber  temperature  accuracy  verification (see temperature range adjustment insert for more information).  

Cleaning Procedure - 

Periodically  check  the  rear  air  intake  vents  for  dirt  or  dust  build-up. Keep  the  intake  &  

exit  ports  clear  of  obstruction  and  clean  of  dust and dirt.  To reduce the risk of fire, it may be necessary to  remove  the  

bottom plate cover  to  clean  or  vacuum any dirt  and  dust build-up.   To  clean  the exterior  and  interior  surfaces, use a 

damp cloth or an all-purpose cleaner.  Avoid commercially available oven cleaners. 

PAGE 4

Quincy  Lab,  Inc.  warrants  to  the  original  purchaser  that  this  product  will  be  free  from  defects  in  material  and  

workmanship  under  normal  use  throughout  the  warranty  period.  The  standard  warranty  period  for  this instru-

ment is  twenty four (24)  months  from  date  of  shipment.  The  instrument  warranty  is  supplemented  with  a  three  

year  warranty  on  the  heating  element.  Please  refer  to  your  invoice or shipping documents to determine the active 

warranty period. This warranty covers parts & labor (labor at factory only) and shipping cost for replacement parts.

Limited Warranty

Technical Support

Email:

Voice:

Fax:

[email protected]

800-482-4328 ; Press 2 for tech support.

773-622-2282

Quincy Lab, Inc.

109 Shore Dr.,

Burr Ridge, Illinois 60527

If you have any ques�ons or need technical assistance, contact Quincy Lab technical support. 

Visit us on the web at 

www.quincylab.com

Thermal Safety Reset (Snap Disc)

Thermostat 

Rocker Switch

PART #  101-2223 

PART #  201-2213        

Motor 

Reset button

Thermo Fuse (Snap Disc)

Common Replacement Parts   

For a full list of 

replacement 

parts scan QR code.

The oven’s chamber temperature stability can be affected by changes in ambient (room) temperature and/or equipment 

running in close proximity (creating microclimates) or cycling on the same electrical circuit. Take time to see how unit 

location or changes in room temperature from seasonal heating or air conditioning may influence the oven’s set 

temperature. 

For best chamber temperature stability, keep the ambient temperature stable.

Unit not turning ON

when power switch 

is in the ON position

Troubleshooting 

1.

 Check if the unit tripped a GFCI outlet or fuse. Try a non GFCI 

power outlet connection before moving to number 2 on this list.

Oven has power but 

its not heating

or is overheating.

1. Tripped GFCI power outlet

3. Disconnected / loose wires.

PROBLEM

POSSIBLE CAUSE

WHAT TO DO BEFORE CALLING TECH. SUPPORT

2. If the oven does not heat, overheats, or does not maitain a 

setpoint temperature, it’s an indication of a bad/broken/old 

thermostat. Replace thermostat on the unit.  

1. Thermal Fuse (10AF models only) 

Hydraulic Thermostat

115 Volt Switch

2. Thermal safety disc tripped.

2. Reset the oven’s “snap disc”. Refer  to “Thermal Safety 

Reset’  section above for more information.

Chamber Loading  

(Continued)

PART #  201-2217

Bimetal Thermostat (Model 10)

PART #  301-2235

115 Volt Motor

PART #  301-2230 

230 Volt Motor

             

3.

 Check all wire connections in the electrical area (bottom) and 

make sure there are no loose or disconnected wires in the unit.   

2. Bad / broken / old Thermostat 

1. Check thermal fuse in the back of the thermostat is not blown 

or broken. Repacle if blown/broken.

PART #  201-2213-1        

230 Volt Switch

FIG. 6

Summary of Contents for Analog Series

Page 1: ...TH FLAMMABLE LIQUIDS OR GASES Issue Rev 10 22 Quincy Lab Inc 109 Shore Dr Burr Ridge Illinois 60527 1800 482 HEAT 4328 Copyright Quincy Lab Inc 2022 PAGE 1 For models 10AF 20AF 30AF 40AF WATTS VOLTS AMPS PLUG NEMA SPECIFICATIONS MODEL 10AF 1 MODEL 20AF 1 MODEL 30AF 1 MODEL 40AF 1 POWER Switch opening HEAT CYCLE ON OFF l Q 12x8 25x10 30 5x21x25 4 13x11x13 33x28x33 18x14 13x12 45 7x35 5x30 5 18x19 6...

Page 2: ... inside the oven Do not use any flammable solvents or gases or materials that may contain flammable solvents or gases or with liquids vapors or chemicals that produce toxic gases Do not use open liquids in the oven Conduct periodic maintenance as required WARNING Warns of a possible electrical shock IMPORTANT Refers to an important note in the usage of the unit WARNING Warns of a possible risk of ...

Page 3: ... very slowly counter clockwise until the heat cycle light turns off The thermostat will then cycle automatically maintaining the set temperature Rotate the dial to the desired temperature The heat cycle light will illuminate until the set temperature is reached Once reached the heat cycle light will cycle on and off with the heaters maintaining set temperature Typically the oven will need to cycle...

Page 4: ... 2282 Quincy Lab Inc 109 Shore Dr Burr Ridge Illinois 60527 If you have any ques ons or need technical assistance contact Quincy Lab technical support Visit us on the web at www quincylab com Thermal Safety Reset Snap Disc Thermostat Rocker Switch PART 101 2223 PART 201 2213 Motor Reset button Thermo Fuse Snap Disc Common Replacement Parts For a full list of replacement parts scan QR code The oven...

Page 5: ... 0 250 C Calibra on Trim Screw Thermostat Sha Behind Dial FIG A FIG B FIG C Calibrating the dial Set the dial to the most frequently used temperature and allow the oven to achieve temperature stability FIG B Using a 5 64 Allen Key loosen the knob screw s and remove the knob from the oven For models 20 30 and 40 remove the compres sion pin from the thermostat shaft as shown in FIG C Using a small b...

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