Thermo Scientific 30M Operating instructions

hermo Scientific
Precision 30 cu ft Incubator
Standard or Low emperature
Operating and Maintenance Manual 3177878 Rev.
Visit us online to register your warranty
www.thermoscientific.com/labwarranty

Thermo Scientific
MANUAL NUMBER 3177878
41371 8/8/17 Updated 3975 and 3977 electrical schematics bpg
M 41670 7/17 Uodated uniformity pg 4-2, electrical connections pg 6-1 bpg
L -- 9/10 3175235 to 3175237 t-stat on pgs 10-14
K -- 8/10 Parts List - pg 10
J -- 4/09 3975-70-1-D to rev 2, corrected 3175235 to 3175237 - pgs 13 & 14
I 24002/I -3770 2/09 3175274 to 3185253, 3175277 to 3185254-Parts List pg 10, reformat schematics
H 23717/I -3733 12/06 3173630 relay to 300175
G -- 1/06 P/ 3167106 to 3166985, 3174933 to 3174924 - pg 10
F -- 6/05 Manual number and manufacture location - was 36100113
E -- 6/03 Add notices page, update instructions for setting safety and control thermostats-pg 7
D -- 11/01 Add environmental conditions - pgs. 2-3
C -- 2/01 Add part numbers for new doors and gasket - pg 10
B -- 8/99 Update parts list for new kit numbers - pg 10
A -- 6/99 Initial Release
Preface
30 cu ft Incubators i
Standard emperature
Model 30M Voltage Door
3971 120V, 50/60 Hz., 1450W Solid
3973 120V, 50/60 Hz., 1450W Glass
Low emperature (Refrigerated)
Model 30MR Voltage Door
3975 120V, 60 Hz., 2150W Solid
3977 120V, 60 Hz., 2150W Glass

Thermo Scientificii 30 cu ft Incubators
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. 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.
©1999 Thermo Fisher Scientific. All rights reserved.

Thermo Scientific 30 cu ft Incubators 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 Scientific 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 30 cu ft Incubators
Preface
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International customers, please contact your local Thermo Scientific distributor.

30 cu ft Incubators vThermo Scientific
able of Contents
Cautions and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
eneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Unpacking and Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Explanation of Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 8
Section 7
Section 9

30 cu ft Incubators 1-1Thermo Scientific
General
Section 1 Cautions and Warnings
Caution Read these notices before installing the unit. s
As a routine laboratory precaution, always wear safety glasses when
working with this apparatus.
Allow the incubator to cool to approximately 100°F (38°C) before
changing from HEAT to COOL switch positions.
The uniformity will be adversely affected if air circulation is obstructed.
DO NOT place any explosive, combustible, or flammable materials in the
chamber.
DO NOT place sealed containers in the chamber. Sealed containers, filled
with materials, do not provide room for expansion and can develop
dangerous vapor pressure as the temperature increases.
Avoid spillage of large volumes of liquids.
DO NOT evaporate noxious fumes.
The liquid level in the container should be checked daily to prevent
overflow.
Allow a 4°C differential between the desired operating temperature and the
safety temperature.

1-2 30 cu ft Incubators Thermo Scientific
Section 1
Cautions and Warnings
For personal safety, this apparatus must be properly grounded.
Be sure that the power supply is of the same voltage as specified on the
nameplate.
DO NOT connect an instrument, or a second instrument, to the
convenience outlet that exceeds a total of 15 amps, as circuit overload will
result
DO NOT, under any circumstances, cut or remove the third (ground)
prong from the power cord. DO NOT use a two-prong adapter plug.
Hazardous high voltage conditions exist inside the control compartment.
Disconnect all electrical power to the incubator before removing the
cover. Only qualified electrical instrument personnel are authorized to
perform troubleshooting and/or servicing.
Electrical

30 cu ft Incubators 2-1Thermo Scientific
Section 2 Introduction
15AMPS MAX
OOFFFF
OONN
INTERIOR HEAT
OOFFFF
OONN
TEMP.INCREASE
CONTROL
TEMP.INCREASE
SAFETY
350
OFF
700
WATTAGE
1400
LINE
Figure 2-1. Standard Temperature Model 30M (3971, 3973) Figure 2-2. Low Temperature Model 30MR (3975, 3977)
INTERIOR
15AMPS MAX
ON
OFF
HEAT
COOL
OFF
Caution:
Afterturning
compressorOff.
Wait3 minutes
beforerestarting.
CONTROL
TEMP.INCREASE
SAFETY
TEMP.INCREASE 350
WATTAGE
OFF
700
1400
LINE

2-2 30 cu ft Incubators Thermo Scientific
Section 2
Introduction
Your satisfaction and safety are important to Thermo and a complete
understanding of this unit is necessary to attain these objectives.
As the ultimate user of this apparatus, it is your responsibility to
understand its proper function and operational characteristics. This
instruction manual should be thoroughly read and all operators given
adequate training before attempting to place this unit in service.
Awareness of the stated cautions and warnings, and compliance with
recommended operating parameters--together with maintenance
requirements--are important for safe and satisfactory operation. The unit
should be used for its intended application; alterations or modifications
will void the warranty.
Warning As a routine laboratory precaution, always wear safety glasses
when working with this apparatus. s
Caution This product is not intended, nor can it be used, as a sterile or
patient connected device. In addition, this apparatus is not designed for
use in Class I, II, or III locations as defined by the National Electrical
Code. s

30 cu ft Incubators 3-1Thermo Scientific
Section 3 Unpacking and Damage
Save all packing material if apparatus is received damaged. This
merchandise was carefully packed and thoroughly inspected before
leaving our factory.
Responsibility for its safe delivery was assumed by the carrier upon
acceptance of the shipment; therefore, claims for loss or damage
sustained in transit must be made upon the carrier by the recipient as
follows:
Visible Loss or Damage: Note any external evidence of loss or damage
on the freight bill, or express receipt, and have it signed by the carrier’s
agent. Failure to adequately describe such external evidence of loss or
damage may result in the carrier’s refusing to honor your damage
claim. The form required to file such a claim will be supplied by the
carrier.
Concealed Loss or Damage: Concealed loss or damage means loss or
damage which does not become apparent until the merchandise has been
unpacked and inspected. Should either occur, make a written request for
inspection by the carrier’s agent within 15 days of the delivery date; then
file a claim with the carrier since the damage is the carrier’s
responsibility.
By following these instructions carefully, we guarantee our full support of
your claim to be compensated for loss from concealed damage.
DO NOT — FOR ANY REASON — RETURN THIS UNIT
WITHOUT FIRST OBTAININ AUTHORIZATION. In any
correspondence to Thermo, please supply the nameplate data, including
catalog number and serial number.

30 cu ft Incubators 4-1Thermo Scientific
Section 4 General Information
The following instructions encompass the incubators listed below:
The standard temperature model (non-refrigerated) has a temperature
range of ambient +5°C to 70°C. The low temperature model (refrigerated)
has a temperature range of 5° to 70°C.
These incubators occupy less than 8 sq. ft. of floor space. The huge
chamber offers 30 cu. ft. of working capacity.
The 6 shelves furnished give 5 sq. ft. of space each, and can support 100
lbs. Shelf height, adjustable on 1/2" centers, can be varied to
accommodate an innumerable variety of laboratory utensils from petri
dishes to carboys.
A duplex electrical outlet is supplied within the chamber to accept
electrical devices such as roller drums, stirrers, and shakers. The outlet is
activated by an "On-Off" switch with accompanying pilot light located on
the control panel.
Model No. Description Electrical
Characteristics
3971 Standard Temperature Model (30M) Incubator,
w/solid door 120V, 50/60 Hz., 1450W
3975 Low Temperature Model (30MR) Incubator,
w/solid door 120V, 60 Hz., 2150W
3973 Standard Temperature Model (30M) Incubator,
w/glass door 120V, 50/60 Hz., 1450W
3977 Low Temperature Model (30MR) Incubator,
w/glass door 120V, 60 Hz., 2150

4-2 30 cu ft Incubators Thermo Scientific
Section 4
General Information
Environmental Conditions:
This instrument is designed to operate safely under the following
conditions :
- Indoor use.
- Temperature : 15°C to 30°C.
- Maximum relative humidity of 80% for temperatures up to 22°C.
- Maximum altitude : 2000 m.
Maximum performance is assured across the following temperature range :
15°C to 25°C.
Model 30M
Standard Model
Model 30MR
Refrigerated Model
emperature Range ambient +5°C to 70°C 5°C to 70°C
Dimensions (W x D x H)
Overall 36 x 30 x 88 inches
(910 x 760 x 2240mm)
30 x 24 x 72 inches
(760 x 610 x 1830mm)
Chamber 36 x 30 x 93 inches
(910 x 760 x 2360mm)
30 x 24 x 72 inches
(760 x 610 x 1830mm)
Heat-up ime
from 29° to 37°C 60 minutes 90 minutes
from 24° to 70°C 60 minutes 90 minutes
Cool-down ime
from 24° to 10°C -- 45 minutes
Uniformity (±) @ 37°C 1°C or better 1°C or better
Capacity
Shelf Area (sq. ft.) 5 (6 supplied)
300ml BOD bottles 528/6 shelves
500ml BOD bottles 378/6 shelves
1 gal bottle 48/6 shelves
5 gal carboy 9/3 shelves

30 cu ft Incubators 5-1Thermo Scientific
Section 5 Explanation of Controls
All Models:
Dial Thermometer - Chamber temperatures are visually displayed by a
direct reading thermometer located on the left-hand side of the control
panel. The thermometer contains a temperature range of -20 to 80°C and
0 to 180°F.
Although the thermometer has been factory calibrated, recalibration after
shipment may be necessary (see Thermometer Calibration ).
INTERIOR "On-Off" Switch - This switch controls electrical power to
the interior duplex outlet located on the upper rear wall of the chamber.
The pilot light located above this switch will be energized after the line
cord supplied is inserted into the electrical outlet and the switch is in the
"On" position.
SAFETY Thermostat - A safety thermostat is provided which will
control the chamber temperature at a slightly higher temperature than
that desired if the control thermostat becomes inoperative. When the
safety pilot light glows, the heater is "Off" and the safety thermostat
contacts are in the "Open" position.
The safety pilot light is "Out" and the heaters are energized when the
safety thermostat contacts are "Closed".
CONTROL Thermostat - A control thermostat is supplied to control and
maintain the desired chamber temperature. The control pilot light glows
when the heater is energized and the control thermostat contacts are
closed.
WATTA E Selection Switch - This four-position switch is supplied to
allow the operator to select the required wattage to maintain the
desired chamber temperature. The four switch positions are "Off", 350
Watts, 700 Watts, and 1400 Watts.
Usually, the 1400 watt position is used for quick chamber heat-up,
depending on the nature of the load and desired operating temperature.
The switch may later be placed in its appropriate position for normal
operation.

5-2 30 cu ft Incubators Thermo Scientific
Section 5
Explanation of Controls
All Models (cont nued):
LINE Pilot Light - This light will glow after electrical power is connected
to the terminal strip per the installation instructions and attached wiring
diagram.
Interior Light Switch - This is located on the right-hand side of the
chamber and is actuated by opening or closing the door. When the door is
open, the light inside the chamber will glow; and when the door is closed,
the light is out.
Standard Temperature Model Only:
Heat "On-Off" Switch - This switch controls electrical power to the
heater, relay, and blower motor. It does not de-energize the internal
chamber light or the convenience outlet electrical circuits.
Low Temperature Model Only:
COOL-HEAT Switch - A three-position (Cool-Heat-Off) switch is
supplied. This switch allows the operator to change the chamber
temperature to meet the given application. The recommended switch
positions for a given temperature range are as follows:
Sw tch Pos t on Temperature Range
COOL 5°C to ambient plus 10°C
HEAT Ambient plus 10°C to 70°C
"OFF" None - no electrical power to heater or compressor
When the COOL pilot light glows, the compressor is actuated; and
when the CONTROL pilot light glows, the heaters are energized.
Compressor Cutoff Switch - A thermal switch is provided above the
ceiling panels and in the rear of the control compartment. This switch
(normally closed) will open on temperature rise, approximately 125°F
(52°C), and it will prevent damage to the compressor due to excessive
pressures created by high temperature in the chamber.
NO E Allow the incubator to cool to approximately 100°F (38°C) before
changing from HEAT to COOL switch positions. s

30 cu ft Incubators 5-3Thermo Scientific
Section 5
Explanation of Controls
Control thermostat
adjustment screw
Control pilot light
Exhaust vent
Power line
pilot light
Wattage selection
switch
Cool - Heat switch
Interior (convenience outlet)
“ON-OFF” switch
Dial thermometer
Interior (convenience outlet)
pilot light Safety pilot light
Cool pilot light Safety thermostat,
adjustment screw
Figure 5-1. Standard Model 30M
Figure 5-2. Refrigerated Model 30MR
Control thermostat
adjustment screw
Control pilot light
Exhaust vent
Power line
pilot light
Wattage selection
switch
Heat “ON - OFF” switch
Interior (convenience outlet)
“ON-OFF” switch
Dial thermometer
Interior (convenience outlet)
pilot light Safety pilot light
Safety thermostat,
adjustment screw

Section 6 Installation
Location: To assure proper ventilation, allow a minimum of 4 inches of
clearance between the rear, top, and sides of the incubator and adjacent
walls.
Caution An exhaust vent is located at the top right side of the cabinet.
it is not adjustable and should never be obstructed. s
If two or more incubators are positioned side by side, allow a minimum
of 8 inches between cabinets. Adjust the front leveling feet of the
incubator so that the front is higher than the rear. This will assist in
door closing. Choose a site free from rapidly changing ambient
temperature conditions or one which will experience high rises in ambient
temperature during the summer months.
Radiators, air-conditioning outlets, other ventilating system outlets, and
drafts can affect the operation of the incubator by a sudden inrush of air
that is at a temperature different than operating conditions.
Electrical Connections:
Important, please read carefully.
Caution Be sure that the power supply is of the same voltage as specified
on the nameplate. s
The incubator is supplied with mains power leads located beneath the
control compartment cover, and must be permanently connected to an
electrical source by a qualified electrician.
Warning The National Electrical Code should be observed for proper
fusing and the size of the service wires. For personal safety, this apparatus
must be properly grounded. s
A power cord is provided at the rear of the cabinet for the Convenience
Outlet, 15 amps maximum, located inside the chamber.
30 cu ft Incubators 6-1Thermo Scientific

Caution Do not connect an instrument, or a second instrument, to this
outlet that exceeds a total of 15 amps, as circuit overload will result. s
The convenience outlet power cord of this instrument is equipped with a
three-prong (grounding) plug, which mates with a standard three-prong
(grounding) wall receptacle to minimize the possibility of electric shock
hazard from this apparatus. The customer should have the wall receptacle
and circuit checked by a qualified electrician to make sure the receptacle
is properly grounded.
Where a two-prong wall receptacle is encountered, it is the personal
responsibility and obligation of the user to have it replaced with a
properly grounded three-prong receptacle.
Warning DO NOT, under any circumstances, cut or remove the third
(ground) prong from the power cord. DO NOT use a two-prong
adapter plug. s
Determine the total amount of current presently being used by other
apparatus connected to the circuit that will be used for this power cord.
It is critical that the added current demand and other equipment on the
circuit not exceed the rating of the fuse or circuit breaker in use.
Loading Procedure: These incubators depend upon heated or cooled air
being circulated within the chamber by means of a blower fan located
above the chamber ceiling. The air flow enters the chamber from the
bottom diffuser panel.
DO NOT place any objects on the chamber floor or substitute solid
shelves for the shelves provided, as these procedures will obstruct the air
flow and temperature uniformity.
When loading the incubator, a space of 1/2" must be allowed between
adjacent items. This will allow maximum air circulation, which is
necessary for proper temperature uniformity.
Caution The uniformity will be adversely affected if air circulation is
obstructed. s
Do not exceed 100 lbs. load per shelf, as weight in excess of this will cause
the shelf to sag.
6-2 30 cu ft Incubators Thermo Scientific
Section 6
Installation

30 cu ft Incubators 6-3Thermo Scientific
Section 6
Installation
WARNING: SAFETY PRECAUTIONS
1. DO NOT place any explosive, combustible, or flammable materials in
the chamber.
2. DO NOT place sealed containers in the chamber. Sealed
containers, filled with materials, do not provide room for expansion
and can develop dangerous vapor pressure as the temperature
increases.
3. Avoid spillage of large volumes of liquids.
4. DO NOT evaporate noxious fumes.
Low Temperature Model Only
A plastic container is provided to collect condensate from the cooling coil.
A piece of 7/16" I.D. plastic tubing is used to connect the condensate drip
tube (located at the rear center of the chamber ceiling) to this container.
Note The liquid level, in the container, should be checked daily to
prevent overflow. s

Section 7 Operation
Standard Model Only
1. Place the HEAT "On-Off"” switch in the "On" position.
2. Place the WATTA E selection switch in the “1400” watts position for
fast chamber heat-up.
Allow the chamber temperature to rise to within 5°C of the desired
temperature; then select the appropriate heater wattage.
Desired Chamber
Wattage Setting Temperature °C
350 37 to 45
700 46 to 60
1400 61 to 70
Low Temperature Model Only
1. Place the COOL-HEAT switch in the switch positions indicated below
to maintain the desired chamber temperature.
Desired Temp.
Switch Position Range
COOL 5°C to ambient plus 10°C
HEAT Ambient plus 10°C to 70°C
2. When the HEAT position is employed, place the WATTA E
selection switch in the “1400” watts position for fast chamber heat-up.
Allow the chamber temperature to rise to within 5°C of the desired
temperature; then select the appropriate heater wattage.
Desired Chamber
Wattage Setting Temperature °C
350 37 to 45
700 46 to 60
1400 61 to 70
30 cu ft Incubators 7-1Thermo Scientific