Thermo Scientific Lindberg Blue M 3055 Series User manual

Lindberg Blue M
Performance Ovens
3055 and 3056 Series
Operating Manual and Parts List LT2148X3 Rev. 0
_________________________________________________________________________________
Part of Thermo Fisher Scientific

Thermo Scientific
MANUAL NUMBER LT2148X3 (7006941)
0 -- 4/15/10 Transfer to Marietta (was LT2148X3 2/15/10) ccs
REV ECR/ECN DATE DESCRIPTION By
Preface
Lindberg Blue M Performance Oven i
Models covered in this manual
Models Size Voltage Forced Air/Gravity
LB305545G (6941) 2.5 cu ft (Small) 120V Gravity
LB305645M (6944) 2.5 cu ft (Small) 120V Forced Air
LB305555G (6942) 3.8 cu ft (Medium) 120V Gravity
LB305655M (6945) 3.8 cu ft (Medium) 120V Forced Air
LB305565G (6943) 5 cu ft (Large) 120V Gravity
LB305665M (6946) 5 cu ft (Large) 120V Forced Air

Thermo Scientificii Lindberg Blue M Performance Oven
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. Thermo Fisher Scientific makes no representations or warranties with respect to this
manual. In no event shall Thermo be held liable for any damages, direct or incidental, arising out of or related to
the use of this manual.
©2010 Thermo Scientific. All rights reserved.

Thermo Scientific Lindberg Blue M Performance 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. Thermo 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 Thermo’s compliance with this directive, the recyclers in your country and
information on Thermo products will be available at www.thermofisher.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.

Thermo Scientificiv Lindberg Blue M Performance Oven
Preface
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technicians or a qualified service organization for on-the-spot repair. If your service need is
covered by the warranty, we will arrange for the unit to be repaired at our expense and to your
satisfaction.
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Lindberg Blue M Performance Oven vThermo 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
Limit Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Display Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Replacing the Door Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Replacing the Door Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Accessing Electronics Compartment . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Adjusting the Door Cam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
Replacing the Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Replacing the Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
Replacing Circulating Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Replacing the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
Replacing the Solid State Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
Replacing the Safety Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
Replacing the Control Thermocouple . . . . . . . . . . . . . . . . . . . . . . .6-10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 8
Section 7

Lindberg Blue M Performance Oven 1-1Thermo Scientific
Section 1 Introduction
Thermo Scientific Lindberg Blue M 3055 & 3056 Series premium 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 models provide improved temperature uniformity and
control, as well as faster drying. In these models, 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 models 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.
Lindberge Blue M ovens include 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 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

Lindberg Blue M Performance Oven 2-1Thermo Scientific
Section 2 Specifications
Operating Range . . . . . . . . . . . . . . . . . . .50 to 275°
Average Uniformity . . . . . . . . . . . . . . . . . . .@ 200°*
Forced Air Models . . . . . . . . . . . . . . . . . . . . . .±3°C
Gravity Models . . . . . . . . . . . . . . . . . . . . . . . . .±4°C
Control Resolution . . . . . . . . . . . . . . . . . . . . . . .1°C
Control Sensitivity . . . . . . . . . . . . . . . . . . . . .±0.5°C
Recovery Time @ 200°C**
LB305645M . . . . . . . . . . . . . . . . . . . . .1.0 minutes
LB305545G . . . . . . . . . . . . . . . . . . . . . .2.0 minutes
LB305655M . . . . . . . . . . . . . . . . . . . . .2.0 minutes
LB305555G . . . . . . . . . . . . . . . . . . . . . .3.0 minutes
LB305665M . . . . . . . . . . . . . . . . . . . . .2.5 minutes
LB305565G . . . . . . . . . . . . . . . . . . . . . .4.0 minutes
Rise Time to 275°C
LB305645M . . . . . . . . . . . . . . . . . . . . . .70 minutes
LB305545G . . . . . . . . . . . . . . . . . . . . . .40 minutes
LB305655M . . . . . . . . . . . . . . . . . . . . . .80 minutes
LB305555G . . . . . . . . . . . . . . . . . . . . . .80 minutes
LB305665M . . . . . . . . . . . . . . . . . . . . . .80 minutes
LB305565G . . . . . . . . . . . . . . . . . . . . . .100 minutes
Air Exchanges per Hour*
LB305645M . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
LB305545G . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
LB305655M . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
LB305555G . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
LB305665M . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
LB305565G . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
*as per ASTM E145
**door open one minute

2-2 Lindberg Blue M Performance Oven Thermo Scientific
Section 2
Specifications
BTU/hr Output . . . . . . . . . . . . . . . . . . . . .@100°C @200°C
LB305645M . . . . . . . . . . . . . . . . . . . . . . . . . . .1125 2750
LB305545G . . . . . . . . . . . . . . . . . . . . . . . . . . . .470 1325
LB305655M . . . . . . . . . . . . . . . . . . . . . . . . . . .1325 2925
LB305555G . . . . . . . . . . . . . . . . . . . . . . . . . . .1040 2025
LB305665M . . . . . . . . . . . . . . . . . . . . . . . . . . .1325 3095
LB305565G . . . . . . . . . . . . . . . . . . . . . . . . . . .1150 2040
Electrical Requirements
LB305645M 120V, 11.5A, 1380W, 60 Hz
LB305545G 120V, 11A, 1320W, 60Hz
LB305655M 120V, 15.5A, 1860W, 60 Hz
LB305555G 120V, 15A, 1870W, 60Hz
LB305665M 120V, 15.5A, 1860W, 60 Hz
LB305565G 120V, 15A, 1800W, 60Hz
Chamber Volumes
LB305545G and LB305645M . . . 2.5 cu. ft. (small)
LB305555G and LB305655M . . 3.8 cu. ft. (medium)
LB305565G and LB305665M . . . .5.0 cu. ft. (large)
Chamber Dimensions (W x D x H)
LB305545G and LB305645M . . .18 x 18 x 13.5 in.
LB305555G and LB305655M . . . . .18 x 18 x 20 in.
LB305565G and LB305665M . . .18 x 18 x 26.5 in.
Environmental Conditions
Operating: 17°C - 27°C; 20% to 80% relative humidity, non-condensing.
Installation category II (overvoltage) in accordance with IEC 664.
Pollution degree 2 in accordance wth IEC 664.
Altitude Limit: 2,000 meters.
Storage: -25°C to 65°C 10% to 85% relative humidity

Lindberg Blue M Performance Oven 3-1Thermo Scientific
Section 3 Installation
The oven requires an area approximately 2 ft. x 2 ft. The bench selected
must be capable of supporting at least 120 lbs. for the small ovens, 130 lbs.
for the medium ovens, or 135 lbs. for the large ovens. Proper electrical
power must be available. Locate the oven such that no extension cord is
required. The oven shall have 2” air clearance on all sides (6” if
combustible materials) and a minimum of 24” air clearance on top to
allow heat dissipation and prevent temperature build ups.
Thermo Scientific Lindberg Blue M ovens are shipped in a single carton.
After unpacking, locate each item shown in the list below. Report any
missing items, by name and part number, to your Thermo Scientific
distributor. In the event of shipping damage, retain the shipping material
and file a claim with the final carrier.
• Shelves
• Small and medium - one provided
•Large - two provided
• Shelf Supports
• Small and medium - two provided
• Large - four provided
Note If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be impaired.
Warning Do not use top of oven as a shelf.
Do not cover oven vent hole.
Keep combustible materials away from oven vent hole. s
Warning. Hot Surface. Oven vent and exiting air are hot. Keep hands
away. s
Unpacking

3-2 Lindberg Blue M Performance Oven Thermo Scientific
Section 3
Installation
Preparing the Oven Caution See data plate on oven for voltage, current and line frequency
specifications. Check that the power requirements of the oven will not
overload the circuit to which it will be connected. s
To prepare the oven for operation, perform the following procedures:
1. Install the shelf.
2. Make certain all packing material has been removed from oven
chamber.
3. Connect the line cord to an appropriate electrical outlet.
4. The oven is now ready for operation. No preliminary adjustments or
calibrations are required. Depending on the customer application and
customer laboratory procedures an initial calibration may be done at
this point (see Display Offsets).
The 3055 & 3056 Series ovens feature a front panel mounted power
switch which is a switch combination power switch and circuit breaker,
eliminating the need for separate fusing. The circuit breaker will interrupt
power in the event of an oven heater malfunction. Press the I (upper) half
of the rocker-type power switch in to turn the oven on. Press the 0 (lower)
half in to turn off oven power. To reset the breaker, first place the switch to
the Off position, then return it to the On position.
Power Switch

Lindberg Blue M Performance Oven 4-1Thermo Scientific
Section 4 Controls
The following sections briefly describe the locations and functions of
various display fields and keypad controls. More detailed descriptions are
provided, when required, in the operating sections of the manual.
The 3055 & 3056 Series controller features a bright, one half inch LED
numeric display which reads out the oven temperature. Three smaller
LEDs indicate, respectively, an alarm condition, that power is being
applied to the oven heaters or that the control temperature is being set.
Each display field is discussed separately below.
Figure 4-1. Display Fields
Temperature Display - In the normal operating mode, shows the current
oven temperature. During programming, indicates the oven set tempera-
ture target.
Heat Indicator - Lights when power is being supplied to the oven heater.
Alarm Indicator - Lights if the actual oven temperature exceeds the alarm
temperature. The alarm temperature is factory-adjusted to be 5°C above
the set temperature.
Program Indicator - Lights when the control temperature is being set.
Display

4-2 Lindberg Blue M Performance Oven Thermo Scientific
Section 4
Controls
Keypad The 3055 & 3056 Series incorporates a four-key, tactile keypad. The
function of each key is discussed individually below. Refer to Figure 4-1 on
the previous page.
Pressing MENU while holding down the SET key decreases the oven set
temperature, as indicated on the temperature display.
Pressing INCREASE while holding down the SET key increases the oven
set temperature, as indicated on the temperature display.
Pressing DECREASE while holding down the SET key decreases the oven
set temperature, as indicated on the temperature display.
Pressing SET causes the display to show the set temperature. Used with
INCREASE and DECREASE to change the set temperature or with
MENU to access entry of a temperature display offset.

Lindberg Blue M Performance Oven 5-1Thermo Scientific
Section 5 Operation
The 3055 & 3056 Series ovens maintain a set temperature until that set
temperature is changed. To set a temperature, perform the following:
1. Place the power switch in the On position. All 8s will flash as a test of
the display.
2. Press and hold the SET.
3. Observe the set temperature in the display window.
4. To decrease the set temperature, press DECREASE while holding SET.
5. To increase the set temperature, press INCREASE while holding SET.
6. When the desired set temperature is shown, release the INCREASE or
DECREASE keys. Finally, release the SET key. The oven automatically
begins to control at the set temperature.
Note To rapidly increase or decrease the set temperature, press and hold
the appropriate arrow key. To slowly increment or decrease the set
temperature one degree at a time, press and immediately release the arrow
key. s

5-2 Lindberg Blue M Performance Oven Thermo Scientific
Section 5
Operation
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 ovens, 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 unit 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.
• Wear insulated gloves.
• Use tongs.
• Never stand in front of an open oven.
• Use safety goggles.
The 3055 & 3056 Series controllers feature a deviation alarm which alerts
the operator and and interrupts heater power whenever the actual oven
temperature differs from the set temperature by more than 5°C. The set
limit is built in to the controller and cannot be changed.
• If the actual temperature exceeds the alarm limit, the alarm indicator
LED will light and the display will indicate EEE.
• The reference point for the alarm is the set temperature. Any change in
the set temperature will cause a corresponding shift in the alarm
temperature. Example: If the set temperature is 150°C, the alarm will
trip at 155°C. If the set temperature is changed to 200°C, the alarm
will follow the set temperature and trip at 205°C.
• Changing the set temperature to a value more than 5°C below the
present oven temperature will trip the alarm. Power is removed from
the heaters when an alarm condition occurs. Example: First,
experiment samples were being soaked at 160°C. Experiment
completed and oven reset to 140°C. The oven immediately goes in to
alarm once the set point is reset to 140 from 160. The oven will stay in
alarm until the oven temperature cools down to 144.9° (140,+5,-0.1).
Safety Precautions
Limit Alarm

The 3055 & 3056 Series controllers permit the operator to select a display
offset Offsets temperature. With a display offset entered, the temperature
displayed will be the actual oven temperature (measured at the control
thermocouple) plus or minus the display offset selected.
Functionally, the offset feature permits the operator to measure and
calibrate such that the display will indicate the temperature at a specific
point or zone within the oven. To enter a display offset, carry out the
following steps:
1. Press the MENU, the display will indicate CAL
2. To view the present offset value, press and hold the SET key.
3. To change the display offset, press and hold the SET key. Press
INCREASE or DECREASE until the display indicates the desired
offset.
4. Release the SET key.
5. Press MENU once to return to normal temperature control.
Examples:
1. The displayed temperature is the result of algebraically adding the
actual temperature to the offset value. Thus, if an offset of -3° is being
used, a measured temperature of 50° will be displayed as 47°.
2. A test is to be performed at 150°C in the center of the oven and
temperature is critical. Place a thermometer or thermocouple
(calibrated) at the critical point and set the oven to 150°C and allow
the oven to stabilize. The calibrated thermometer reads 151°C. A
display offset of 1 is entered. The immediate display reads 151. The
oven cools to 150°C, the display reads 150 and the calibrated
thermometer reads 150.
Lindberg Blue M Performance Oven 5-3Thermo Scientific
Section 5
Operation
Display Offsets

Section 6 Service
The following sections describe procedures for servicing the 3055 & 3056
Series ovens. The first procedure, Replacing the Door Gasket, may be
performed by most users. However, all other service procedures involve
potential exposure to line voltage. These procedures should be undertaken
only by qualified service personnel. The second section, Accessing the
Electronics Compartment, describes procedures required for subsequent
service sections and is referenced by these later sections when required.
In the event service is required beyond that available by the customer, or
for warranty service, contact the Technical Services Department.
Caution Service procedures requiring access to the electronics
compartment involve exposure to line voltage and should be done only by
qualified service personnel. Disconnect oven from power source before
attempting repairs. s
Caution Allow oven to cool to ambient temperature before attempting
repair. s
Caution Only factory authorized components should be used for all
repairs. Failure to use factory authorized replacement components will void
warranty and could result in unit malfunction and or hazardous operating
conditions. s
The Lindberg Blue M 3055 & 3056 Series ovens incorporate a durable,
silicone door gasket to minimize heat loss. Should the gasket become
defective or be damaged, it may be replaced by following the procedures
below.
Note Study the method of door gasket attachment before starting
disassembly. Understanding will avoid confusion later in this process. s
1. Set the power switch to off position and open chamber door.
2. Open door fully. Carefully remove and retain hardware from door
hinges (case side). Lay door on a flat surface with the handle over the
edge.
Lindberg Blue M Performance Oven 6-1Thermo Scientific
Replacing the Door
Gasket