Fisher Scientific Isotemp Premium 700 Series User manual

Isotemp®Premium Ovens
700 Series
Operation Manual and Parts List
LT2148X1 (7006916) Rev. 3
© 2010 Fisher Scientific Inc.
All rights reserved
Printed in U.S.A.
Isotemp

Fisher Scientific
MANUAL NUMBER LT2148X1 (7006916)
3 30485 10/29/13 Corrected Menu button details - pg 4-2
2 28232 2/23/12 Updated Recovery and Rise Time - pg 2-2 ccs
1 27703 7/27/11 Corrected PC board and probe number in parts list ccs
0 -- 4/26/10 Transfer to Marietta (was LT2148X1 2/9/09) ccs
REV ECR/ECN DATE DESCRIPTION By
Preface
Isotemp Premium Ovens i
Models covered in this manual
Model Size Voltage Forced Air/Gravity
13247725F (6916) Small (2.5 cu ft) 120V Forced Air
13247725G (6917) Small (2.5 cu ft) 120V Gravity
13247726F (6918) Small (2.5 cu ft) 240V Forced Air
13247726G (6919) Small (2.5 cu ft) 240V Gravity
13247737F (6921) Medium (3.8 cu ft) 120V Forced Air
13247737G (6922) Medium (3.8 cu ft) 120V Gravity
13247738F (6923) Medium (3.8 cu ft) 240V Forced Air
13247738G (6924) Medium (3.8 cu ft) 240V Gravity
13247750F (6925) Large (5 cu ft) 120V Forced Air
13247750G (6926) Large (5 cu ft) 120V Gravity
13247751F (6927) Large (5 cu ft) 240V Forced Air
13247751G (6928) Large (5 cu ft) 240V Gravity

Fisher Scientificii Isotemp Premium Ovens
Preface
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. Fisher Scientific makes no representations or warranties with respect to this manual.
In no event shall Fisher Scientific be held liable for any damages, direct or incidental, arising out of or related
to the use of this manual.
©2010 Fisher Scientific. All rights reserved.

Fisher Scientific Isotemp Premium Ovens 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. Fisher Scientific 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
compliance with this directive, the recyclers in your country and information on Fisher Scientific
products will be available at www.fishersci.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.

Fisher Scientificiv Isotemp Premium Ovens
Preface
Do You Need Information or Assistance
on Fisher Scientific Equipment?
The Fisher Scientific 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 your. Our products are listed on
the internet and we can be contacted through our Internet home page.
1-800-766-7000 Customer Service
www.fishersci.com To order online
Fisher Scientific 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 Fisher Scientific 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:
1-800-766-7000 Customer Service
1-800-926-1166 Orders Fax
International customers, please contact your local Fisher Scientific distributor.

Isotemp Premium Ovens vFisher Scientific
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Preparing the Oven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Limit Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Display Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Replacing the Door Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Replacing the Door Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Accessing Electronics Compartment . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Adjusting Door Cam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Replacing the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Replacing the Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
Replacing the Circulating Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Replacing the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
Replacing the Solid State Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
Replacing the Control Thermocouple . . . . . . . . . . . . . . . . . . . . . . . .6-9
Rerplacing the Safety Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 8
Section 7
Section 9

Isotemp Premium Ovens 1-1Fisher Scientific
Section 1 Introduction
Fisher Scientific Isotemp 700 Series Standard ovens are available in three
sizes: Small, Medium and Large. All ovens provide PID Microprocessor
control at operating temperatures ranging from 50°C (122°F) to 275°C
(527°F).
The forced air ovens provide improved temperature uniformity and
control, as well as faster drying. In these ovens, fresh air enters through an
air intake on the bottom of the oven, then is heated in a plenum below the
chamber. A blower circulates the heated air into the wall plenums and the
oven chamber itself in uniform flow patterns. Exhaust air is vented
through a port at the top of the oven.
Gravity flow ovens inlet air through a port located under the oven floor.
Heat generated convection then gently moves the air in a vertical
circulation pattern. Exhaust air is vented through a port at the oven top.
Temperature readouts and control parameters are shown on red LEDs.
Three additional LEDs indicate when heater power is being applied, an
error condition is encountered, or the temperature is being set.
The Small ovens accommodate a maximum of five shelves. The Medium
ovens hold eight shelves, while the Large ovens each hold eleven.
Isotemp ovens incorporate a variety of safety features. A safety backup is
built into the controller software: if the primary heater control fails, the
backup will maintain control at 5°C above the set point. An alarm LED
then indicates that the backup controller is operating the oven. A circuit
breaker protects the oven from power surges. If primary and backup heater
controls fail, an independent Over Temperature Device will disengage
heater operation.
The silicon rubber gasket supplied with the oven is good for continuous
use up to 250°C and intermittent use to 275°C. This gasket provides a
better seal than the high temperature gasket and is supplied with is
supplied with the unit. An optional high temperature braided gasket is
available for customers using the oven frequently above 250°C. The part
numbers of the supplied and optional gasket are listed below:
Oven Size Silicon Rubber Gasket Part #
(Supplied with Oven)
Braided Gasket Part #
(High Temp Gasket Optional)
Small SPN 101908 SPN 95782
Medium SPN 101909 SPN 95783
Large SPN 101910 SPN 95784

Isotemp Premium Ovens 2-1Fisher Scientific
Section 2 Specifications
Performance Characteristics
Operating Range . . . . . . . . . . . . . . . . . .50 to 275°C
Average Uniformity @ 200°C
Forced Air Ovens . . . . . . . . . . . . . . . . . . . . . .±3°C
Gravity Ovens . . . . . . . . . . . . . . . . . . . . . . . . .±4°C
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1°C
Control Sensitivity . . . . . . . . . . . . . . . . . . . . .±0.5°C
Model Size Forced Air/ Gravity
13247725F (6916) Small (2.5 cu ft) Forced Air
13247725G (6917) Small (2.5 cu ft) Gravity
13247726F (6918) Small (2.5 cu ft) Forced Air
13247726G (6919) Small (2.5 cu ft) Gravity
13247737F (6921) Medium (3.8 cu ft) Forced Air
13247737G (6922) Medium (3.8 cu ft) Gravity
13247738F (6923) Medium (3.8 cu ft) Forced Air
13247738G (6924) Medium (3.8 cu ft) Gravity
13247750F (6925) Large (5 cu ft) Forced Air
13247750G (6926) Large (5 cu ft) Gravity
13247751F (6927) Large (5 cu ft) Forced Air
13247751G (6928) Large (5 cu ft) Gravity