Thermo Scientific 2076 Series User manual

Precision High Performance
Incubators - Double Door
Series 2076
Operating Manual and Parts List LT2076X2 Rev. 0
_________________________________________________________________________________
Part of Thermo Fisher Scientific

Thermo Scientific
MANUAL NUMBER LT2076X2 (7006873)
0 -- 6/3/10 Transfer to Marietta (was LT2076X2 4/8/09) ccs
REV ECR/ECN DATE DESCRIPTION By
Preface
High Performance Incubator i
Models covered in this manual
Models Size Voltage Convection
PR205075G (6877) 11.2 cu ft 120V Gravity
PR205070G (6873) 11.2 cu ft 240V Gravity
PR205070GCN (6874) 11.2 cu ft 240V Gravity
PR205075M (6878) 11.2 cu ft 120V Mechanical
PR205070M (6875) 11.2 cu ft 240V Mechanical
PR205070MCN (6876) 11.2 cu ft 240V Mechanical

Thermo Scientificii High Performance Incubator
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 High Performance Incubator 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 High Performance Incubator
Preface
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High Performance Incubator vThermo Scientific
Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Unpacking and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Shelf Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Temperature Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Setting the Over-Temp Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Autotune . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Temperature Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6

vi High Performance Incubator Thermo Scientific
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Checking Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Care and Cleaning of Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
The pH Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
The Alloy called Stainless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Stainless Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Special Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Cleansing Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Cleaning Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4
Servicing Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Switch or Status Lamp Replacement . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Thermostat Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Heater Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Replacing Temp Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
Decontamination Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Ordering Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Table of Contents
Section 8
Section 7
Section 9

High Performance Incubator 1-1Thermo Scientific
Section 1 Description
Thermo Scientific High Performance Incubators are useful in all types of
general incubating and paraffin imbedding.
Cabinets are made of heavy-gauge steel with a powder-coated finish for
optimum appearance and easy cleaning, while the interior walls are
stainless steel to spread warmwall radiant heat evenly throughout the
chamber. Heaters are in direct contact with chamber walls to allow close
temperature control and quick recovery after door openings. This
arrangement also minimizes temperature gradients and offers a large
working area in the chamber.
A double set of doors, the inner of tempered glass, permits unobstructed
viewing of chamber contents without disturbing the interior environment.
Slide-out shelving can be positioned to meet user requirements.
A PID microprocessor based controller maintains chamber temperature.
An over-temperature safety thermostat controls temperature in the event of
primary control failure. A status lamp above each control is lit when the
respective control is maintaining power to the heaters.
Two grounded 3-prong convenience outlets are installed in models. Models
are built for either 120 VAC or 240 VAC power requirements. Models
PR205075M, PR205070M and PR205070MCN have the same
characteristics as those listed above but, in addition, provide mechanical
convection. These models use a blower and plenum design to circulate the
air within the chamber to allow for rapid temperature and uniformity
recovery after door openings.

High Performance Incubator 2-1Thermo Scientific
Section 2 Safety Information
Your Thermo Scientific High Performance Incubator has been designed
with function, reliability, and safety in mind. It is your responsibility to
install it in conformance with local electrical codes. It is most important
that the user follow installation instructions exactly as written. Failure to
do so is likely to lead to improper operation, erroneous calibrations and
possible damage to the equipment. Do not attempt operation without this
information.

High Performance Incubator 3-1Thermo Scientific
Section 3 Specifications
Electrical Requirements
Temperature Range
Slightly above ambient to 65°C
Shipping Weight
215 lbs. (98 kg)
Unit Dimensions
Inside Outside
37"W x 21"D x 25"H 40.5"W x 25"D x 34.5"H
(94 x 53 x 64 cm) (103 x 64 x 88 cm)
Usable Volume Shelves Shelf Area
11.2 cu. ft. 6 13.8 sq. ft.
Environmental Conditions
Operating: 15°C to 40°C; 20% to 80% RH, non-condensing.
Installation category II (overvoltage) in accordance with IEC 664.
Pollution degree 2 in accordance with IEC 664.
Altitude Limit: 2,000 meters.
Storage: -25°C to 65°C, 10% to 85% relative humidity
Model Voltage Hertz Amps Watts
PR205075G 120 60 8.3 1000 (2 electrical outlet, 120V, 500W total load)
PR205075M 120 60 8.3 1000 (2 electrical outlet, 120V, 500W total load)
PR205070G 230/240 50/60 5.0 1200 (2 electrical outlet, 240V, 720W total load)
PR205070M 230/240 50/60 5.0 1200 (2 electrical outlet, 240V, 720W total load)
PR205070GCN 230/240 50/60 5.0 1200 (2 electrical outlet, 240V, 720W total load)
PR205070MCN 230/240 50/60 5.0 1200 (2 electrical outlet, 240V, 720W total load)

High Performance Incubator 4-1Thermo Scientific
Section 4 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.
Note Disconnect the unit from the power source when not in use. s
Place the unit on a level surface protected from drafts, strong air currents
and large fluctuations in ambient temperature. It must be located near an
electrical outlet that meets the unit nameplate requirements. Allow
clearance around the unit for free air convection, accessory equipment, and
user convenience. Do not cover the vent on top of the incubator.
It is important that the unit is level before operation. DO NOT
REMOVE THE UNIT’S RUBBER FEET—they assist proper air
circulation inside and outside of the chamber. Removal can result in erratic
control and excessive heat build-up beneath the unit.
1. Each shelf bracket has 2 prongs at each end for attachment to the
chamber sidewall. Insert the longer top prongs into slots of equal
height on one side of the chamber, then push the bracket up and insert
the lower prongs.
2. Push down on the bracket to ensure proper seating.
3. Repeat this procedure for the opposing bracket making sure it is on the
same level as the first bracket (count the slots).
4. Install remaining shelf brackets, then slide shelves into place.
Location
Leveling
Shelf Installation

High Performance Incubator 5-1Thermo Scientific
Section 5 Operation
1. POWER SWITCH: This 2-position rocker switch controls power to
entire unit. The switch is lit when power is ON.
2. CONTROL STATUS LAMP: This lamp is lit when power is being
supplied to heater and not lit when power to the heater is OFF.
3. PROGRAMMABLE CONTROLLER: Maintains chamber
temperature and provides a display of either chamber or set point
temperatures.
4. OVER-TEMPERATURE STATUS LAMP: This lamp is lit when
either an over-temperature condition exists or the over-temperature
thermostat is improperly set too low.
5. OVER-TEMPERATURE THERMOSTAT: This hydraulic thermostat
is set by the operator to back up the control thermostat and safeguard
the incubator.
12345
Figure 5-1. Control Panel

5-2 High Performance Incubator Thermo Scientific
Section 5
Operation
Insert a flat-blade screwdriver into the panel opening and rotate the over-
temperature thermostat stem completely clockwise. After making sure the
unit is plugged in, press the power switch to ON.
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
Warning Do not heat any substance above a temperature that will cause it
to emit toxic fumes. Death or severe injury may result. s
After the unit has reached set point, rotate the over-temperature thermostat
stem counterclockwise until the overtemperature status lamp (4) is lit.
Then rotate it clockwise approximately 5° past the point at which the lamp
is no longer lit. At this point, the over-temperature thermostat will control
heaters only at temperatures above the controller set point.
1. CONTROLLER SELF-TEST: When the incubator is powered up, the
controller will display 8888 along with the three decimal points and
the heat ON indicator lamp. The display will then blank out for 2
seconds before showing the chamber temperature.
2. HEAT ON INDICATOR: The heat ON indicator lamp is lit when
the chamber heater is receiving power. The lamp will normally flash
when the chamber temperature is at set point.
Start-Up
Setting the Over-Temp
Thermostat
Temperature
Controller
✱▼
▼
65.0
Heat Indicator
Chamber or Setpoint Temperature
Figure 5-2. Temp Controller Display with Heat Indicator

3. SET POINT ADJUSTMENTS: The temperature controller normally
displays the chamber temperature. To view or change the temperature
set point proceed as follows:
a. Press and hold the “STAR” (*) key and use either the UP or
DOWN arrow key to adjust the set point to the desired
temperature. Release the “STAR” (*) key.
b. Allow at least 30 minutes for the chamber temperature to stabilize.
The Autotune program automatically adjusts the controller parameters to
achieve optimal temperature control.
It is not necessary to run the Autotune program when setting up the oven.
However, if the temperature appears to be unstable, the Autotune program
can be run using the procedure shown below:
For best results:
• Set the usual set point temperature and use normal load conditions.
• Allow the oven to stabilize at set point for at least 30 minutes.
Auto Tuning Procedure
1. Enter the Program mode by pressing and holding BOTH the UP and
DOWN arrow keys for 3 seconds.
2. Release BOTH arrow keys when ‘tunE’ is displayed.
3. The controller display should now be alternating between ‘tunE’ and
‘oFF’.
4. Press and hold the “STAR” (*) key. Press and release the up arrow key
until ‘At.SP’ is displayed. Release the “STAR” () key.
High Performance Incubator 5-3Thermo Scientific
Section 5
Operation
Temperature
Controller (continued)
Autotune
Press Controller
*View setpoint
*tDecrease setpoint
*sIncrease setpoint

5. After one minute has elapsed, the controller display will begin to
alternate between showing the chamber temperature, tunE and At.SP.
6. Allow the program to run until the display again shows only the
chamber temperature.
1. Place a calibrated thermometer in the approximate geometric center of
the chamber in a position that would allow it to be read through the
glass door.
2. Press and hold the “STAR” (*) key and using the UP or DOWN arrow
key, adjust the set point to the desired temperature.
3. Allow the unit to run for at least 30 minutes.
4. The controller display should now be indicating the set point
temperature. Make note of the thermometer reading without opening
the glass door.
5. Press and hold both arrow keys until the controller display indicates
‘tunE’. Release the arrow keys. Press and release the down arrow key,
the display should now indicate ‘LEUL’. Press and hold the “STAR” (*)
key and, using the UP arrow key, adjust the display to read ‘3’. Release
the “STAR” (*) key. Press and release the UP arrow key until the
display indicates Zero. The display should now alternate between Zero
and a numerical value.
6. Using the examples shown below and the thermometer value obtained
in the previous step, enter the correct Zero value into the controller by
pressing the “STAR” (*) key and using the UP or DOWN arrow key. If
there is already a Zero value present, then add the new value to the one
already present.
7. When the correct Zero value has been entered, press and hold the two
arrow keys together until the display again indicates the chamber
temperature. If the procedure was done correctly, the controller display
should now agree with the thermometer reading to within ±0.5°C.
8. Allow the unit to run for at least 30 minutes.
9. Re-check the thermometer reading, the controller display and the
thermometer should agree to within ±0.5°C. If not repeat steps 4, 5
and 6 above.
5-4 High Performance Incubator Thermo Scientific
Section 5
Operation
Autotune (continued)
Temperature
Calibration
Digital Temp. Reading = 65°C Digital Temp. Reading = 60°C
Upper Display = 60°C Upper Display = 65°C
ADD OFFSET VALUE = +5°C SUBTRACT OFFSET VALUE = -5°C

Section 6 Troubleshooting
The following is intended as a guide to help in servicing this unit, if
problems should occur.
Note Before attempting any repair, disconnect power cord from outlet. s
Note A qualified controls service technician must perform maintenance
and repairs. s
High Performance Incubator 6-1Thermo Scientific
Symptom Possible Causes of Problem
Power switch lamp is not lit when the power
switch is ON
Check that unit is plugged in and that the plug
is good.
Press the power switch to OFF and then back
ON. If the lamp remains unlit, reset the back
panel circuit breaker(s) by pushing in the reset
button(s).
Check the outlet to be sure power is available
to the unit.
Power switch lamp is the only one lit when
following the directions in the previous OPER-
ATION section
Using a screwdriver rotate the over-tempera-
ture thermostat stem completely clockwise (to
highest temperature settings). If unit still does
not heat up, the problem most likely involves
the heater status lamp. If the lamp is good,
check the heaters and heater wiring.
Convenience outlets are not powered when
unit is plugged in
Check that the other features of the unit are
functioning. If not, proceed with the first step
listed above.
Remove any plugs from the convenience out-
let(s). Press in the circuit breakers (located on
the back panel) to reset. If the circuit breaker
pops repeatedly, check the equipment that is
connected to the convenience outlet; check
wiring from circuit breaker to the convenience
outlet.