Cole Parmer 52100-05 User manual

Mechanical Convection Ovens
057-373-00 (7000667) Rev. 3

Cole-Parmer
MANUAL NUMBER 057-373-00 (7000667)
3 40434 8/11/15 Added installation clearance distances to pg 3-1 ccs
2 31325 2/16/15 Added explosion and fire warnings ccs
1 26662/SI-10360 11/1/11 Updated parts list with cordset numbers - pg 6-1 ccs
0 -- 5/21/10 Transfer to Marietta (was 057-373-00 5/23/05) ccs
REV ECR/ECN DATE DESCRIPTION By
Preface
Mechanical Convection Oven i
Models covered in this manual
Model Catalog No. Size Voltage
52100-05 (667) 3515M-1C/P-Q 1.7 cu ft 240V
52100-00 (668) 3515MC/P-Q 1.7 cu ft 120V

Cole-Parmerii Mechanical 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 Mechanical 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 Mechanical 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.

Mechanical Convection Oven vCole-Parmer
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Shelving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Temperature Control (Thermostat) . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Part Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Failure to Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Replacing Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Replacing Status Lamp Bulb Assembly . . . . . . . . . . . . . . . . . . . . . . .5-3
Replacing the Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Replacing the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Replacing Hi-Limit Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Replacing the Blower Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
Replacing the Blower Wheel; Servicing . . . . . . . . . . . . . . . . . . . . . . .5-5
Temperature Readout Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6

Mechanical Convection Oven 1-1Cole-Parmer
Section 1 Introduction
Thank you for selecting Cole-Parmer instruments for your equipment
needs.
Cole-Parmer's Economy 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.
A hydraulic thermostat provides reliable temperature control with a range
from slightly above ambient to 210°C. A sheathed heater is positioned in
the bottom of the chamber along with a constant-speed fan that circulates
heated air rapidly throughout the chamber. The metal cover shields the fan
and protects against splattering in the even that any material is accidentally
spilled in the area of the fan.
Chamber temperature is conveniently monitored via an LED display on
the control panel. To guard against overtemperature conditions, a factory-
set hi-limit thermostat is an integral part of the electrical system.
One-inch thick silica-based insulation in the double-walls of the chamber
helps retain chamber heat. The interior walls of the chamber are stainless
steel and the shelves are chromeplated steel for ease of maintenance and
clean up.
These ovens also have a steel exterior finished in baked enamel and are
rigidly constructed for long, trouble-free service.
These instructions contain important operating and safety information.
The user must carefully read and understand these instructions before
using the unit. 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.

Mechanical Convection Oven 2-1Cole-Parmer
Section 2 Specifications
Power Requirements
52100-00: 120 Volts, 50/60 Hz, 10 Amps, 1100 Watts
52100-05: 240 Volts, 50/60 Hz, 5 Amps, 1100 Watts
Overall Dimensions
18-7/16"W x 15-9/16"D x 25"H (47 x 39-1/2 x 63-1/2 cm)
Chamber Dimensions
16"W x 11-1/2"D x 16"H (40.6 x 29 x 40.6 cm)
Volume
1.7 cu. ft.
Shipping Weight
34 lbs. (15.5 kg)
Performance Characteristics
Temperature Range: . . . . . All models slightly above ambient to 210°C
Thermostat, Control: . . . . .±5.0°C over entire range
Thermometer, Digital: . . . .±2.0°C over entire range
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

Mechanical 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.
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.
Warning Do not place oven on or near any combustible surface to avoid
the possibility of fire and resulting property loss and injury or death to
personnel. s
The oven should be on a level surface, in order to facilitate movement of
materials into and out from the chamber.
Caution Do not remove the rubber spacer feet. Removal of the feet will
prevent proper air venting (air used to cool the electronics is discharged
out the bottom) of oven chamber that may cause excessive heat buildup on
electrical components and erratic control of temperature. s
Location
Leveling

3-2 Mechanical Convection Oven Cole-Parmer
Section 3
Unpacking and Installation
Shelving Slide shelves into place inside the oven and position according to the
height required for the items or materials to be heated.
Caution Bottom shelf is fixed in place to guard against access to heater area
and possibility of injury. Do not remove bottom shelf unless performing
maintenance or repair. s
The 120V unit is supplied with a 3-wire line cord with molded plug. It
should be plugged into an outlet designed for 3-prong plugs. For an outlet
designed to accept 2-prong plugs (ungrounded), it is required that a
qualified electrician replace the outlet with a new grounded type.
If a plug must be installed, use only the 3-prong grounded type, rated for
the unit load requirements and matching the power outlet. Make sure the
green ground wire is secured to the plug ground terminal.
The unit must be connected to a power source that meets the electrical
requirements as specified on the unit’s nameplate.
Note Where it becomes necessary to make changes in electrical outlets,
wiring and other characteristics, it is recommended that these be done by a
qualified or journeyman electrician. This includes replacing 2-prong plugs
(ungrounded), for example, with a 3-prong plug (grounded). All changes
need to be made to match the load requirements shown on the nameplate
of the unit. It is best to leave the unit disconnected when not in use. 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. 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 heater cover.
Electrical
Requirements
Safety

Mechanical Convection Oven 4-1Cole-Parmer
Section 4 Operation
1. POWER SWITCH: Turns the unit ON (green status lamp) and OFF.
2. HI-LIMIT RED STATUS LAMP: Lights when the hi-limit thermostat
is activated. It goes out when oven reverts to a safe operating range.
3. CALIBRATION POTENTIOMETER: Using a jeweler’s screwdriver,
the temperature readout can be adjusted.
4. LED DISPLAY: Displays current chamber temperatures.
5. TEMPERATURE CONTROL (THERMOSTAT): Raises and lowers
temperatures.
6. HEATERS AMBER STATUS LAMP: Lights when heaters are ener-
gized.
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. 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
1 2 3 4 5 6
ON
OFF
TEMPERATURE
CONTROL
TEMPERATURE
HI-LIMIT
°COFST
Figure 4-1. Control Panel

4-2 Mechanical Convection Oven Cole-Parmer
Section 4
Operation
Temperature Control
(Thermostat)
1. With the temperature control thermostat (5) in the extreme
counterclockwise position, turn the power rocker (1) to its ON
position (switch’s green status lamp will light).
2. Turn the temperature control thermostat in clockwise direction to
increase the temperature and counterclockwise to lower it. The amber
status lamp (6) above the thermostat goes on when the heaters are
energized. Wait for the chamber temperature to stabilize before
advancing thermostat too rapidly to reach target temperature. Note
that dial setting to obtain a specific temperature will need to be
approximated and can be affected by such factors as changes in line
voltage, ambient conditions and types of materials being heated.
3. Read the LED display (4) for the chamber temperature produced by
each setting of the temperature control thermostat. (As experience is
gained with the temperature control thermostat, improved results will
be obtained in setting it to achieve specific target temperatures.)
4. Always allow time for the oven to reach target temperature and to
stabilize before making further adjustments of the temperature control
thermostat.
5. A factory-set hi-limit thermostat cuts off power to the heater in the
event that the maximum operating range is exceeded. The red status
lamp (2) on the control panel indicates when the hi-limit thermostat is
controlling. It goes out when oven reverts to a safe operating range.
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

Mechanical Convection Oven 5-1Cole-Parmer
Section 5 Maintenance
Because of their rugged, simple construction, these ovens require very little
maintenance. 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.
The following should be performed only by authorized personnel. Unplug
unit from power source. If oven has been used recently, be certain that
surfaces are safe to touch before attempting to perform any of the
following procedures. Remove contents of oven and thermometer from top
of unit.
Note Make no attempt to service or repair a Cole-Parmer product under
warranty before consulting Cole-Parmer. After the warranty period, such
consultation is still advised, especially when the repair may be technically
sophisticated or difficult. If assistance please call our Technical Services
Department. No merchandise, however, should be returned directly to
Cole-Parmer without prior approval.
Warning Disconnect oven from the power source prior to cleaning,
maintenance or servicing. s
Failure to Heat
Part Replacement
Procedures

5-2 Mechanical Convection Oven Cole-Parmer
Section 5
Maintenance
1. Place unit on its side with door latch facing down.
2. Remove back by unscrewing Phillips screws. Save.
3. Carefully remove insulation. Note how it is positioned, so that it can
be easily reinstalled.
4. Remove bottom panel by unscrewing Phillips screws. Save.
5. Remove control knob by unscrewing 2 Allen head screws. Save.
6. Disconnect wires from thermostat. Note position of wires for
subsequent reattachment in same sequence.
7. Knob removal allows access to 2 screws that mount thermostat to
panel. Remove the screws and save.
8. Remove bottom shelf inside chamber. Loosen screw on clamp that
holds thermostat sensing bulb to heater. Note position of temperature
sensing bulb, so that new one can be clamped in same location.
9. Slide bulb toward exit hold at the back of unit.
10. Move to back of unit and pull temperature sensing bulb and tube
through hole.
11. Next, pull bulb and tube through bottom hole.
12. Thermostat, sensing bulb, and tube assembly can now be removed.
13. Reverse above procedure to install new thermostat.
14. Avoid making sharp bends in temperature sensing tube; otherwise,
flow of temperature sensing fluid will be impeded.
Replacing Thermostat

1. With unit on its side as in the preceding, remove bottom plate and
save screws.
2. Disconnect wires from switch. Note sequence of pin numbers on the
side of the switch and attachment of wires. The replacement switch
must be oriented in the same manner and wires attached in the same
sequence.
3. Compress holding tabs on switch and push out.
4. Insert new switch from the front. When inserting, follow same
orientation of pin numbers as on the switch just removed.
5. Attach wires in SAME SEQUENCE as originally attached. To verify
that correct sequence has been followed, refer to wiring schematic.
6. Reverse remainder of procedure.
1. With unit on its side as in the preceding, remove bottom plate and
save screws.
2. Note plastic lamp unit that houses bulb. Be alert that lens will pop out
in next step.
3. Grasp lamp unit and pull a fraction of an inch toward the attached
wires. Lens will pop out the front. Save.
4. Cut wires and remove lamp unit. Discard.
5. To install new pilot lamp unit, splice the two wires of the assembly to
previously cut wires using insulated crimp connectors.
6. Reinstall lens.
7. Reinstall bottom plate.
Mechanical Convection Oven 5-3Cole-Parmer
Section 5
Maintenance
Replacing the Power
Switch
Replacing Status
Lamp Bulb Assembly

1. Remove back panel and carefully remove insulation for subsequent
reinstallation. Save.
2. Hi-limit thermostat is mounted on back of inner chamber wall.
3. Unscrew 2 screws and nuts holding wires. Save.
4. Remove screw securing thermostat to back of inside wall.
5. Reverse preceding procedure to install a new hi-limit thermostat.
1. Heater is located in bottom of chamber. Be sure that unit has been
turned off for a period of time, so that there is no residual heat on any
of the surfaces.
2. Remove back panel by unscrewing Phillips screws and save.
3. Carefully remove insulation and save. Note how it is positioned, so
that it can be easily reinstalled.
4. Remove two retaining clips that mount heater to back of inside wall.
Save.
5. Remove wires to heater by uncoupling the quick-disconnects.
6. Remove bottom shelf inside chamber. Loosen screw on clamp which
holds thermostat sensing bulb to heater. Note position of temperature
sensing bulb, so that new one can be clamped in same location.
7. Install new heater and reverse the preceding steps.
5-4 Mechanical Convection Oven Cole-Parmer
Section 5
Maintenance
Replacing Hi-Limit
Thermostat
Replacing the Heater

1. Disconnect power cord.
2. Remove shelves. Note that bottom shelf is retained by a clip at the
back of the oven. Lift shelf at the front edge until the back edge can be
withdrawn from the clip.
3. Remove Phillips screws holding shield that covers blower wheel.
4. Inspect blower wheel assembly for tightness and any off-center
operation. Inspect blower wheel itself for damage to vanes or other
deterioration. If assembly is loose, tighten setscrew holding wheel to
motor shaft until wheel turns true. If wheel is damaged, replace.
5. Replace the shield and shelves.
1. Disconnect unit from power source. If previously in use, let unit cool
down.
2. Lay unit on side. Remove shelves, including the bottom one.
3. Remove bottom cover, fan shield and blower fan.
4. Accessing the unit from the bottom, remove motor and bracket
assembly. Disconnect wires.
5. Remove shaft extension, bottom fan and motor bracket from old
motor and reinstall on new replacement motor.
6. Reinstall motor assembly into unit in reverse order of removal.
7. Reconnect wires.
8. Reinstall shelves. Make sure that bottom shelf is securely in place to
prevent access to the heater area.
Mechanical Convection Oven 5-5Cole-Parmer
Section 5
Maintenance
Replacing the Blower
Wheel; Servicing
Replacing the Blower
Motor