Cole Parmer 52120-03 User manual

StableTemp Economical
Gravity Convection Ovens
LT1479X5 (7000662) • Rev. 3

Cole-Parmer
MANUAL NUMBER LT1479X5 (7000662)
3 40434 8/10/15 Added installation ventilation distances - pg 3-1 ccs
2 31325 2/16/15 Added explosion and fire warnings ccs
1 31259 10/28/14 Updated thermometer installation on pg 3-2 ccs
0 -- 5/21/10 Transfer to Marietta (was LT1479X5 11/15/05) ccs
REV ECR/ECN DATE DESCRIPTION By
Preface
Economical Gravity Convection Oven i
Models covered in this manual
Models Size Voltage
52120-03 (662) 3511-1C/PQ 1.7 cu ft 240V
52120-02 (663) 3511C/PQ 1.7 cu ft 120V

Cole-Parmerii Economical Gravity Convection Oven
Preface
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION
Important Read this instruction manual. Failure to read, understand and follow the instructions in this manual
may result in damage to the unit, injury to operating personnel, and poor equipment performance. s
Caution All internal adjustments and maintenance must be performed by qualified service personnel. s
Material in this manual is for information purposes only. The contents and the product it describes are subject
to change without notice. Cole-Parmer makes no representations or warranties with respect to this manual. In
no event shall Cole-Parmer be held liable for any damages, direct or incidental, arising out of or related to the
use of this manual.
©2010 Cole-Parmer. All rights reserved.

Cole-Parmer Economical Gravity Convection Oven iii
Preface
Important operating and/or maintenance instructions. Read the accompanying text carefully.
Potential electrical hazards. Only qualified persons should perform procedures associated with this
symbol.
Equipment being maintained or serviced must be turned off and locked off to prevent possible injury.
Hot surface(s) present which may cause burns to unprotected skin, or to materials which may be
damaged by elevated temperatures.
Marking of electrical and electronic equipment, which applies to electrical and electronic equipment
falling under the Directive 2002/96/EC (WEEE) and the equipment that has been put on the market
after 13 August 2005.
This product is required to comply with the European Union’s Waste Electrical & Electronic
Equipment (WEEE) Directive 2002/96/EC. It is marked with the WEEE symbol. Cole-Parmer has
contracted with one or more recycling/disposal companies in each EU Member State European
Country, and this product should be disposed of or recycled through them. Further information on
Cole-Parmer’s compliance with this directive, the recyclers in your country and information on these
products will be available at www.cole-parmer.com.
4Always use the proper protective equipment (clothing, gloves, goggles, etc.)
4Always dissipate extreme cold or heat and wear protective clothing.
4Always follow good hygiene practices.
4Each individual is responsible for his or her own safety.

Cole-Parmeriv Economical Gravity Convection Oven
Preface
Do You Need Information or Assistance
on Cole-Parmer Equipment?
The Cole-Parmer Instruments Sales Group can provide information on pricing and give you
quotations. We can take your order and provide delivery information on major equipment items or
make arrangements to have your local sales representative contact you.
1-800-323-4340 Cole-Parmer, Toll Free, US
Cole-Parmer Instruments Product Service Support can supply technical information about
proper setup, operation or troubleshooting of your equipment. We can fill your needs for
replacement parts or provide you with on-site service. We can also provide you with a quotation on
our Extended Maintenance Program for our products.
Whatever products you need or use, we will be happy to discuss your applications. If you are
experiencing technical problems, working together, we will help you locate the problem and, chances
are, correct it yourself...over the telephone without a service call.
When more extensive service is necessary, we will assist you with direct factory trained
technicians or a qualified service organization for on-the-spot repair. If your service need is covered
by the Cole-Parmer Instruments Products warranty, we will arrange for the unit to be repaired at our
expense and to your satisfaction.
Regardless of your needs, professional service technicians are available by telephone to assist
you concerning our products Monday through Friday from 8:00 a.m. to 6:00 p.m. Eastern Time.
Please call or fax us at:
1-800-323-4340 Toll Free U.S. and Canada
1-847-549-7600 Direct
1-847-549-7676 Fax
International customers, please contact your local Cole-Parmer Instruments distributor.

Economical Gravity Convection Oven vCole-Parmer
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Ordering Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7

Economical Gravity Convection Oven 1-1Cole-Parmer
Section 1 Introduction
Thank you for selecting Cole-Parmer instruments for your equipment
needs.
Cole-Parmer's Economical Gravity Convection Ovens are designed for use
in hospitals, industry, and school laboratories - wherever there is a need for
low-cost, yet reliable ovens for drying, sterilization, baking, evaporation or
similar type work. They are ideal for drying glassware, drying and/or
baking non-flammable crystalline chemicals, pre-heating crucibles or other
containers and drying filter paper strips or rounds.
The temperature range, controlled by a bimetallic thermostat on the front
control panel, is from ambient +5°C to 210°C. A sheathed heater produces
the unit’s heat and a pre-set high limit bimetallic thermostat is standard on
all models. A pilot light on the control panel indicates oven operation
status.
Helping to retain chamber heat is one-inch thick insulation of semi-
refractory fibers that is sandwiched between the double walls of the
chamber. The interior walls of the chamber are aluminum and the shelves
are steel wire as is the surface covering the heater area - all for more
efficient distribution of heat.
These ovens are built for rugged performance and long life. Each has a
durable powder coated cold rolled steel exterior. To inhibit rust, the
shelves are nickel-plated steel.
These instructions contain important operating and safety information.
The user must carefully read and understand these instructions before
using the oven. Your unit has been designed to optimize function,
reliability, safety and ease of use. It is the user’s responsibility to install the
oven in conformance with local electrical codes.

Economical Gravity Convection Oven 2-1Cole-Parmer
Section 2 Specifications
Power Requirements
52120-02 . . . . .120 Volts, 50/60 Hz, 6.7 Amps, 800 Watts
52120-03 . . . . .240 Volts, 50/60 Hz, 3.3 Amps, 800 Watts
Overall Dimensions
52120-02, 52120-03 . . . 18½"W x 13½"D x 22½"H (47 x 34 x 57 cm)
Chamber Dimensions
52120-02, 52120-03 . . . 16"W x 11½"D x 16-1/8"H (41 x 29 x 41 cm)
Volume
52120-02, 52120-03 . . . . 1.7 cu. ft. (48.2 liters)
Shipping Weight
52120-02, 52120-03 . . . . .57 lbs. (26 kg)
Performance Characteristics
Temperature Range . . . .All models ambient +5°C to 210°C
Uniformity at 100°C . . .±5.0°C
Control at 100°C . . . . . ±9.0°C
Environmental Operating Conditions
Pollution Degree* . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation Category* . . . . . . . . . . . . . . . . . . . . . . .II
Altitude . . . . . . .2000 Meters MSL (Mean Sea Level)
Humidity . . . . . . . .80% maximum, non-condensing
Electrical Supply . . . . . . . . . . . .120VAC or 240VAC
Voltage Tolerance . . . . . .±10% of normal rated line
Temperature . . . . . . . . . . . . . . . . . . . . .15°C to 40°C
Product Usage: . . . . . . . . . . . . . . . . .Indoor use only
*Refer to IEC 664-1

Economical Gravity Convection Oven 3-1Cole-Parmer
Section 3 Unpacking and Installation
The shipping carton should be inspected upon delivery. When received,
carefully examine for any shipping damage before unpacking. If damage is
discovered, the delivering carrier should both specify and sign for the
damage on your copy of the delivery receipt.
Open the carton carefully making certain that all parts are accounted for
before packaging materials are discarded. After unpacking, if damage is
found promptly report it to the carrier and request a damage inspection
promptly.
Important Failure to request an inspection of damage within a few days
after receipt of shipment absolves the carrier from any liability for damage.
Call for a damage inspection promptly. s
The oven should be located in an area free from drafts and sources of heat,
as well as allowing for natural air movement to dissipate heat from the
oven. To ensure needed ventilation around the oven, allow 1.5 inches on
each side and 3 inches at the back. Allow enough distance above the unit
to be able to install and retrieve the thermometer.
• Use a properly grounded electrical outlet of correct voltage and current
handling capacity.
• Do not remove or modify grounded power plug. Use only properly
grounded outlets to avoid shock hazard.
Note Disconnect the unit from the power source when not in use. s
Location
Electrical
Requirements

3-2 Economical Gravity Convection Oven Cole-Parmer
Section 3
Unpacking and Installation
Installation 1. Install the shelves on the rack inside the oven.
2. Turn the power switch OFF and plug the oven into a receptacle that
provides the required voltage as indicated on the unit’s nameplate.
3. Install an immersion thermometer (furnished by the user) through the
thermometer grommet and into the thermometer holder.
4. Adjust the immersion depth to 6-7/8” (175mm), measured from the
bulb to the top of the rubber washer.
5. Insert this assembly into the thermometer vent ring that is located on
top of the oven.
6-7/8" 175 mm
(Top of Oven)
Thermometer Vent Ring
Thermometer Holder
Thermometer Grommet

Economical Gravity Convection Oven 4-1Cole-Parmer
Section 4 Operation
1. Turn the power switch ON - status lamp will light.
2. Set the control thermostat to obtain the desired temperature. Read the
user-supplied thermometer, not the control dial; the control dial is
graduated from 0 to 10 for REFERENCE PURPOSES ONLY. It is
suggested that a log be made of control settings vs. thermometer
readings to assist in obtaining desired temperatures. However, it is
important to bear in mind that the applicability of such a chart will be
affected by changes in line voltage and ambient conditions.
3. Allow time for the oven to reach its maximum set temperature and to
stabilize.
Warning Do not use in the presence of flammable or combustible
materials or explosive gases. Do not use in the presence of pressurized or
sealed containers – fire or explosion may result, causing death or severe
injury.
Warning Do not heat any substance above a temperature that will cause it
to emit toxic fumes; death or severe injury may result. s
Caution It is the user’s responsibility to monitor oven action when setting
and maintaining operating temperature; oven failure may occur with
possible property damage and/or injury to personnel. s
Status Lamp
Control Thermostat
Power Switch
ON
OFF
Figure 4-1. Control Panel
Start-Up

4-2 Economical Gravity Convection Oven Cole-Parmer
Section 4
Operation
Start-Up (continued) Warning To avoid electrical short or shock, do not allow any metal object
to protrude into the space beneath the shelf/heater shield inside the oven.
In addition, do not operate oven with the shield removed. s
Warning Hot Surface At the higher temperatures, the exterior of the oven
and particularly the thermometer vent ring on the top become
uncomfortably warm to the touch. To avoid burns, do not touch these
surfaces. s
Warning This unit is not explosion-proof. Do not use in the presence of
flammable or combustible materials; fire or explosion may result. Unit
contains components that may ignite such materials. Before operating
oven, always observe the following safety precautions:
• Fumes and spillage from acidic solutions cause corrosion of the
stainless steel chamber. Care should be taken to maintain a neutral
pH at all times.
• The heater for the oven is in the bottom of the unit. Surface
temperatures at the bottom cover of the unit may be higher than
set point temperature. For example: A plastic container on the
heater cover may become hot enough to melt/burn the container at
settings below the melting point of plastic. Do not place items on
the heater cover.
Thermometer Vent Ring
Heater Shield
Figure 4-2. Thermometer Vent Ring and Heater Shield Locations

Economical Gravity Convection Oven 5-1Cole-Parmer
Section 5 Maintenance
Because of their rugged, simple construction, these ovens require very little
maintenance. Ordinary cleaning will suffice. The bottom shelf that covers
the heater can be removed for easy access to the heater area.
Clean up any spills as soon as possible to prevent materials being baked on
surfaces. When the oven is cool, use a mild soap and water to clean
surfaces. Rinse thoroughly and dry. It is best to avoid highly abrasive
cleaners that can damage the finish of the interior surfaces and shelves.
If the oven fails to heat, there may be several possible causes:
• Oven is not receiving electrical power.
• Heater is burned out.
• Thermostat is malfunctioning.
Have a qualified electrical technician determine the cause of the problem
and make the necessary repairs. Cole-Parmer can provide the service and
replacement parts needed.
Note Make no attempt to service or repair a Cole-Parmer product under
warranty before consulting your dealer. After the warranty period, such
consultation is still advised, especially when the repair may be technically
sophisticated or difficult.
If assistance is needed beyond what the distributor can provide, call
Technical Services. No products should be returned without prior approval
from Cole-Parmer. s
Warning Disconnect from the power supply prior to maintenance and
servicing. s

Section 6 Replacement Parts
Refer to the Specification Plate for the complete model number, serial
number, and series number when requesting service, replacement parts or
in any correspondence concerning this unit.
All parts listed herein may be ordered from Cole-Parmer. When service or
replacement parts are needed, contact our Technical Services Department.
Prior to returning any materials to Cole-Parmer, contact our Technical
Services Department for a “Return Goods Authorization” number (RGA).
Material Returned without an RGA number will be returned.
Economical Gravity Convection Oven 6-1Cole-Parmer
DESCRIPTION PART NUMBER
Tension Catch 600-124-00
Handle 560-165-00
Feet 790-225-00
Status Lamp Base 360-233-01
Status Lamp Lens (amber) 360-235-00
Power Switch 52120-02 440-359-00
Power Switch 52120-03 440-292-00
Thermometer Grommet 790-247-00
Thermometer Holder 910-039-00
Control Thermostat 920-280-00
Thermostat Knob 560-265-00
Hi-Limit Thermostat 920-413-00
Heaters
52120-02 340-213-00
52120-03 340-215-00
Shelves 810-303-00
Ordering Procedures

Section 7 Wiring Diagram
Economical Gravity Convection Oven 7-1Cole-Parmer
WH1480X1
WM1480X1
CR1480X1
GRN
BLK
WHT
WM1480X2
ON (I)
CONTROL THERMOSTAT WITH SHAFT
Wiring Diagram • Model 52120-00, 52120-01, 52120-02, 52120-03, 52120-04, 52120-05