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     Locate and place the oven on a suitable, clean, and solid surface.

Maintain a minimum of 6 inches of air space between the rear electrical 

cover and any building or vertical surface.

       Do not cover or restrict air flow at the rear air intake ports, this will cause 

the motor to over-heat, shortening the motor's life and increase risk of fire. 

        Heated exhaust air is expelled through the two small ports located just 
above rear electrical cover. (FIG. 2) Keep materials or building surfaces 

that may be susceptible to this heated exhaust air clear from rear area. 

Maintain a minimum 5 feet of unobstructed space above the oven to allow 

exhaust air to convect up and away from the air intake ports. 

Keep 3" of air space at the oven sides (3" from control panel cover).  

Safety  Precautions 

Read Operating Instructions thoroughly prior to operation and observe the following safety precautions:

Read Operating Instructions Thoroughly Prior to Operation  

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 fire 

CAUTION

Cautions of HOT exterior surface during operation.

WARNING

Warns of  possible injury or muscle strains, use assistance when moving or liftiing. 

W

ALL

6"

10"

6" minimum from wall to

rear blower housing.

CLEARANCE

REQUIREMENTS

 20AMP

5-20P

15AMP

5-15P

 120 Volt Units

 20AMP

6-20P

15AMP

6-15P

 230 Volt Units

REAR VIEW AIR FLOW

EXHAUST AIR

INTAKE AIR

FIG. 1

Below are NEMA plug configurations that are supplied with the various Bench Series ovens. 

These configurations will also help to identify the ovens electrical rating or power requirements.

Electrical

Plug the unit into a grounded outlet for your unit's rated voltage. Isolate each model to a separate, appropriately 

rated circuit or breaker.  

 See electrical label on the right rear side of electrical cover to verify your units power requirements.

FIG. 2

Use only a grounded outlet that is rated for your model's electrical requirement. 
Do not modify the oven or factory control settings to operate the oven above the stated maximum operating 

temperature.  
Exterior surfaces on the Bench Oven models may become hot to the touch when operating at higher set temperatures.  
Do not leave the oven unattended during operation. 
Conduct periodic maintenance as required.

WARNING: 

Do not place volatile or combustible materials into Bench Ovens.  

CAUTION:

 This unit is not intended for use with any flammable liquids or vapors, or with chemicals that produce toxic gases.  

Set-Up & Installation

For units with optional Exhaust Chamber Adapter, see page 5.

PAGE 2

Summary of Contents for Bench 21-250ER

Page 1: ...5x19 7x24 25 5x19 7x22 5 25 5x29 7x24 33x24x35 5 33x24x35 5 33x34x35 5 33x24x35 5 WEIGHT SHIPPING STAND ALONE 185 165 185 165 225 200 195 170 STANDARD ELECTRICAL PLUG NEMA 120 8 75 1050 5 15P 120 16 1...

Page 2: ...trains use assistance when moving or liftiing WALL 6 10 6 minimum from wall to rear blower housing CLEARANCE REQUIREMENTS 20AMP 5 20P 15AMP 5 15P 120 Volt Units 20AMP 6 20P 15AMP 6 15P 230 Volt Units...

Page 3: ...ts located on each inner side of the oven Orientate the bracket in the down or L position This position guides the shelf in and out and protects the side wall from being scratched The bracket may also...

Page 4: ...ing HEATER SWITCH HEAT FAN COOL The heater switch in the off down or fan cool position allows for convenient ambient air drying of articles or to more slowly evenly cool heated articles without having...

Page 5: ...ce of the oven exhaust chamber or piping and present a fire hazard over time Contact an HVAC engineer for assistance with installation or questions regarding proper venting requirements in your specif...

Page 6: ...oll back and forth through level functions Level P is the Ramp Soak program level See separate Ramp Soak Programming Operating Manual PRESS Sensorburn out uP SC dn sc 1u 2d 1d 2u Reverseoutputs 1r 2d...

Page 7: ...you desire better performance For example If you want better run up performance once a load is placed start the auto tune function just after you ve place the load If you want the best stability afte...

Page 8: ...quincylab com Technical Support For a complete list of replacement componets part and additional equiptment visit us on the web at www quincylab com or contact your dealer for availability and pricin...

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