Quincy lab GC Series User manual

Model 30GC Lab Oven
POWER
Switch
opening
HEAT/CYCLE
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Quincy Lab, Inc.
PAGE 1
Carton Contents
(1) GC Series Oven
(2) Adjustable chrome wire shelf
(4) Shelf brackets
(1) Glass Thermometer (non-toxic)
(1) Rubber Thermometer grommet
INTERIOR DIMENSIONS
INCHES W x H x D
(CM) W x H x D
EXTERIOR DIMENSIONS
INCHES W x H x D
(CM) W x H x D
12x10x10 13x13x13 18x21.75x1418x15.63x12
14x17.5x12.25 15x21x15 20x25x14 20x30x16
WEIGHT (lbs)
SHIPPING
STAND ALONE
44
38
61
54
78
70
94
85
STANDARD ELECTRICAL*
AMPS
WATTS
PLUG/NEMA
5.2
600
5-15P
6.3
750
5-15P
10.5
1200
5-15P
12.5
1500
5-15P
30.5x25.4x25.4 33x33x33 45.7x55.25x35.545.7x39.75x30.5
35.5x44.5x31.75 38x53.3x38 51x63.5x35.5 51x76.2x40.7
SPECIFICATIONS MODEL
10GC MODEL
20GC MODEL
30GC MODEL 40GC
TEMPERATURE RANGE
Ambient + 25 F to F / C
Common Unit Construction
Exterior: Powder-Coated Steel Interior: Aluminized Steel
Insulation: Fiberglass Motor: N/A on GC Models
Thermo-control: Bimetal/Hydraulic Heater: Resistive-Tubular Incoloy
*Standard models voltage only, optional 220 voltage available. For power requirements, see electrical info on label located at the rear
of the oven.
Quincy Lab Inc. 1925 N. Leamington Ave. Chicago, Illinois 60639 1-800-482-HEAT (4328)
Issue Rev 0917
Copyright Quincy Lab Inc. 2017
VOLTS 115 120 115 120
Model GC Series Lab Ovens
OPERATING MANUAL
TEMPERATURE STABILITY
Typically +/- F / C
450o/232o 450o/232o450o/232o450o/232o
6o/ 3o6o/ 3o6o/ 3o6o/ 3o
Approvals:
Underwriter’s UL / CUL, United States
Canadian for laboratory equipment.
Compliance: UL Standard 61010-1
IEC 61010-1.
NOT FOR USE WITH FLAMMABLE
LIQUIDS OR GASES

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A
B
C
D
Read Operating Instructions Thoroughly Prior to Operation
The GC series Lab Ovens are not designed for use with any flammable solvents or gases or in close
proximity to any flammable solvents, gases, or materials. Operate oven in accordance with all state, local, and
federal laws that may govern its usage for your specific application. Use only a grounded outlet that is rated for
your model's electrical requirement. Oven exterior walls and doors may become hot to the touch when operating
at higher set temperatures. Do not leave the oven unattended during operation, especially when processing
materials that may ignite at temperatures lower than the oven model's maximum operating range. Do not modify
the oven or factory control settings to operate the oven above the stated maximum operating temperature.
Conduct periodic maintenance as required.
Safety Precautions
General Operation
Set-up & Installation
FIG. 3
FIG. 2
Set-up unit in a clean and unobstructed operating location. Keep a minimum of 4
inches of airspace around the unit and a minimum of 18 inches above the unit. The
three exhaust ports at the top of the unit will expel a small amount of heated air, fumes
or moisture through natural convection. For best performance, these ports should
remain open. These ports can also be used as an access for an external temperature
probe to verify the chamber's temperature or the chamber's contents directly. (FIG 1)
Plug oven into a grounded outlet rated for your unit's labeled voltage.
A separate circuit or breaker should be dedicated for the oven.
FIG. 1
Exhaust ports
Heater
Rear fresh air
intake vents
Install adjustable shelves as required, by placing the ends of the
wire shelf bracket into the corresponding holes located on the inner
sides of the oven at the desired height. Push the ends of the
bracket into the holes until the first bends in the bracket are against
the wall, then rotate the bracket down. Place the shelf on the
brackets. (FIG 2)
For 20GC, 30GC, and 40GC models: These models come equipped with a
dual-range "quick-set" knob dial. This feature makes it easier to hit a target
temperature range from a cold start, whether using the Fahrenheit or Centigrade
scale.Turn the thermostat knob to the desired temperature indicated on the knob
(Fahrenheit), or the dial (Centigrade).
To set the temperature in degrees Fahrenheit, turn the knob in a clockwise direction
until the desired number on the knob is directly under the white triangle with the "
o
F"
in the center. (FIG 3)
All models are ready for your immediate use. Remove the glass thermometer from its container and place
bottom end through the rubber grommet. Insert the grommet into one of the ports on the top of the oven and
adjust the thermometer so that it extends at least 2 inches into the oven chamber. For the 10GC series model:
Switch the ON/OFF power switch to the ON position. Turn the thermostat control knob clockwise to around the
number '8'. The light will come on indicating heater activity. Monitor the reading of the thermometer until it
reaches the desired temperature. Next, rotate the control knob very slowly counter-clockwise until the
heat-cycle light goes out. The thermostat will then cycle automatically maintaining the set temperature. Turn the
oven off with the ON/OFF power switch, saving the temperature setting for the next use.
READ INSTRUCTIONS THOROUGHLY BEFORE OPERATING OVEN
DO NOT USE WITH FLAMMABLE LIQUIDS OR GASES
EXTERIOR SURFACES MAY BECOME HOT DURING OPERATION
WARNING:
WARNING:
CAUTION:
RISK OF ELECTRICAL SHOCK. DISCONNECT UNIT FROM POWER SOURCE BEFORE REMOVING COVER
WARNING:
NOT FOR USE WITH OPEN LIQUIDS
WARNING:
CARE SHOULD BE TAKEN WHEN CARRYING/LIFTING UNIT INTO PLACE. LARGER
UNITS ARE HEAVY AND MAY REQUIRE TWO PEOPLE TO TRANSPORT OR INSTALL.
WARNING:

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Also, any degree of offset observed for a given temperature setting may be different for other temperature
settings on the dial. The control dial is calibrated at the factory in the middle of the model's temperature range
and is therefore most accurate in these middle-range temperatures. Over time, continuous use at a single
temperature setting may require periodic re-adjustment as the contacts wear or as ambient temperatures change
seasonally, or from air conditioning or heating. See also: "Temperature Dial Calibration".
Article or media processing times and temperature uniformity are largely dependent on load density and
positioning. Load the oven so that the air circulation within the oven is not impaired. Here are some general
guidelines:
Leave a space between multiple articles on a shelf. Stagger articles from those on lower shelves in a "V"
formation. (FIG 5)
Avoid placing articles or media against or in close proximity to walls, especially on the lower shelf, allowing
unrestricted air flow around articles and contributing to even and consistent heating.
Use of large solid trays, or foil on shelves severely limits heat to the shelves and articles placed above. (FIG 6)
Since not enough heat rises within the chamber, thermometer readings at the top of the chamber give false
indication that temperature setting is too low. Higher temperature adjustments made as a result of these readings
could overheat the lower-placed articles or media.
For best processing performance for a single item, adjust a shelf so that the item is centered in the oven chamber.
FIG. 4
FIG. 6
FIG. 5
Ideal Air Circulation
General Operation (continued)
Obstructed
Air Circulation
Chamber Loading
To set a temperature in degrees Centigrade, turn the knob in a
clockwise direction until the white triangle with the "°C" marking
is pointing toward the desired temperature printed on the face of
the control panel. (FIG 4)
Rotate the thermostat 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 at a set temperature for a minimum of 20
minutes before it will achieve equilibrium and become
temperature stable.
NOTE: The temperatures printed on the "quick-set" dial are
designed to help quickly set a temperature to within a close
proximity of the indicated dial temperature. Small rotational
adjustments to the dial will likely be required to set a more
precise temperature setting as measured against a reading from
the glass thermometer (supplied), or other measuring device.
HEAT CYCLE
Model 30GC Lab Oven
ON
POWER OFF
HEAT CYCLE
Model 30GC Lab Oven
ON
POWER OFF
Unit Safety Reset- If the unit exceeds its maximum temperature, an internal safety “snap disc” will cut power
to the unit until it is manually reset. To do this, unplug the unit, lay it on its back and remove the bottom cover.
Locate the round “snap disc” and push-in the button to reset.
RISK OF ELECTRICAL SHOCK. DISCONNECT UNIT FROM POWER SOURCE BEFORE REMOVING COVER.
FAILURE TO COMPLY COULD RESULT IN SERIOUS INJURY OR DEATH.
WARNING:

PAGE 4
Limited Warranty
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
instrument is eighteen 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.
Technical Support
Temperature Dial Calibration
If you have any questions or need technical assistance, please contact Quincy Lab Tech Support at
Email: [email protected] Quincy Lab, Inc.
Voice: 800-482-HEAT (4328) 1925 N Leamington Ave
Fax: [phone] Chicago, Illinois 60639
Visit us on the web at www.quincylab.com
Periodic Oven Maintenance
The GC series Lab Ovens are designed to be virtually maintenance free. But operational safety requires periodic
cleaning and chamber temperature accuracy verification. Periodically check the rear air intake vents for dirt or
dust build-up. Keep the intake & exit ports clear of obstruction, dust and dirt. Once a year, check the actual oven
chamber temperature against a known accurate temperature measurement device. Maintain temperature dial
accuracy to within +/-15 degrees F of the control setting. Calibrate the control as necessary. To clean exterior
and interior surfaces, use a damp cloth or an all-purpose cleaner. Avoid commercially available oven cleaners.
Don't overload the unit with large (in quantity OR size), or high-density loads. This will restrict air flow and result in
non-uniform processing and long or impossible "heat-through" times. To help determine a large load's suitability,
use the set point recovery time (the time it takes for the temperature to recover to the original set temperature
once load is placed), as a guide. To reduce recovery time, reduce load proportionally.
NOTE: The set point of the thermostat or chamber temperature stability can be affected by changes in ambient
(room) temperature and/or equipment running 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.
Isolate the oven on a separate circuit when possible.
The unit's minimum operating temperature is largely determined by ambient temperature. The unit can operate 25
degrees F (15 degrees C) above room temperature but temperature stability will be degraded. Stability improves
appreciably for settings that exceed ambient by 40 degrees F (20 degrees C) or better.
Chamber Loading (continued)
+
-
Calibrating the actual chamber temperature to the temperature
printed on the knob/dial, should only be done if the chamber
temperature, as measured by a known accurate device, is off by
more than +/- 15oF (8oC) from any indicated dial setting. The
most accurate calibration possible for any analog-type control is
at a single temperature setting. Therefore, calibrate the control
at the most frequently used temperature.
To calibrate: Set dial temperature to a frequently used
temperature then remove knob (allen screw). Be careful not to
move the position of the shaft when removing the knob. Allow
oven to achieve a stable temperature. Remove compression pin
(newer models only) to access the trim-screw recessed in shaft
center. Using a small blade driver, turn the trim-screw clockwise
(CW) to adjust temperature down and (CCW) to adjust the
temperature upward. Make only small 1/16th adjustments at a
time. Allow the temperature to settle before making any
subsequent adjustments. NOTE: Use pliers to keep outer shaft
from turning when making trim-screw adjustments.
Do not adjust control to operate above
the oven's stated maximum operating
temperature.