Important Read this instruction manual. Failure to read, understand and follow the instructions in this manual
may result in damage to the unit, injur y to operating personnel, and poor equipment per formance.
s
Caution All internal adjustments and maintenance must be per formed 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 Scientific makes no representations or warranties with respect to this manual. In
no event shall Thermo be held liable for any damages, dir ect or incidental, arising out of or related to the use of
this manual.
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 pr event 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 electr onic equipment
falling under the Directive 2002/96/EC (WEEE) and the equipment that has been put on the mar ket
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 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.)
4 Always dissipate extreme cold or heat and wear protective clothing.
4 Always follow good hygiene practices.
4 Each individual is responsible for his or her own safety.
If you do, please contact us 8:00 a.m. to 6:00 p.m. (Eastern Time) at:
1-740-373-4763Direct
1-800-438-4851Toll Free, U.S. and Canada
1-877-213-8051FAX
http://www.thermoscientific.comInternet Worldwide Web Home Page
service.led.marietta@thermofisher.com
Ourstaff can provide information on pricing and give you quotations. We can
Sales Support
take your order and provide delivery information on major equipment items or make
arrangements to have your local sales representative contact you. Our products are listed on the
Internet and we can be contacted through our Internet home page.
Service E-Mail Address
Ourstaff can supply technical information about proper setup, operation or
Service Support
troubleshooting of your equipment. We can fill your needs for spare or replacement parts or
provide you with on-site service. We can also provide you with a quotation on our Extended
Warranty for your Thermo Scientific products.
Whatever Thermo Scientific 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 warranty, we will arrange for the unit to be repaired at our expense and to your
satisfaction.
Regardless of your needs, our professional telephone technicians are available to assist you
Monday through Friday from 8:00 a.m. to 6:00 p.m. Eastern Time. Please contact us by
telephone or fax. If you wish to write, our mailing address is:
The following materials are supplied with Model 480/481 Console Shaker:
2 - Keys for the lid lock (packaged and attached to outside of unit)
1 - T-handle 5/32” hex socket wrench
2 - Platform alignment studs 1/4-20
1 - Shaker Platform
6 - Grade 8, 5/32” hex socket flat head scr ews (provided with platform)
1 - 3/4” open end wrench
2 - 1/4-20 x 7” stand-off bolts with r ubber caps
1 - Screwdriver for flask clip installation and removal
To secure the console shaker to the
shipping pallet, hold-down brackets are
attached to slots in both sides of the
cabinet. The brackets are fastened to the
wood pallet with lag screws (Figure 1-1).
Locate the shaker on a firm, level surface in an area free of dust and dirt.
To allow for lid opening, the back of the shaker must be at least 4½ inches
from the wall. Allow 6 inches clearance on both sides for v entilation
purposes.
Figure 1-1. Bracket
Location
Figure 1-2. Front and Side View
Page 9
1-2Orbital ShakerThermo Scientific
Section 1
Installation
The 480/481 console shaker features front-to-back air circulation for
cooler compressor temperatures, increased performance and reliability and
longer compressor life. Therefore, the fan area on the back of the cabinet
must be at least 4 inches from the back wall or other obstruction. To
maintain this distance, two 1/4-20 x 7” bolts ar e included in the parts
bag.
Screw the bolts in the threaded holes on the back of the shaker cabinet
(Figure 1-2). The bolts should be screwed in by hand to the limit of the
threads. Further tightening is unnecessary. Put the protective rubber caps
also supplied in the parts bag over the heads of the bolts.
A drain is provided in the bottom of the chamber for conv enience when
cleaning or removing spills. (Figure 1-3) A clear vinyl hose and plastic
valve is connected to the drain and is accessed b y removing the front grille
assembly and the lower front panel. The grille is removed by gently
pulling it off. It is held in place by six push-in type retainers.
To remove the cabinet panel located in back of the grille, r emove six
Phillips screws, three on the top and three on the bottom. It may also be
necessary to loosen the two left side P hillips screws holding the kick panel
assembly to the shaker frame.
Installing the Cabinet
Stand-off Bolts
Figure 1-2. Bolt Locations
Chamber Drain
Figure 1-3. Chamber Drain Hose Location
Threaded holes for
stand-off bolts
Page 10
Orbital Shaker 1-3Thermo Scientific
Section 1
Installation
A 3/8” O.D. stainless steel condensate drain is located on the back of the
shaker to remove any water which may collect in the air duct wor k. Refer
to Figure 1-4.
Note If your platform is already installed, skip this section and continue to
next section.
s
Caution Remove the shipping bracket and install the shaker platform
before plugging in or attempting to operate the unit.
s
After removing the orbital mechanism shipping bracket and installing the
platform, remove this protective decal from the control panel to begin
shaker operation.
Figure 1-6. Shipping Bracket
To protect the shaker’s orbital mechanism during shipment, a sheet metal
shipping bracket (Figure 1-6) is installed and must be r emoved before the
unit can be operated. Using a 7/16” and 9/16” hex wrench, remove the
three 1/4” and the single 3/8” screws. Retain this hardware for future
shipping.
Condensate Drain
Figure 1-4. Drain Location
Installing the Platform
Figure 1-5. Warning Decal
Condensate Drain
Page 11
This shaker accommodates either a 5/16” heavy-duty, 29.5” wide x 18”
front-to-back platform.
Note If installing the larger platform, RPM is limited to 400. The 194012
counterweight kit must also be installed b y qualified service personnel.
s
All shaker platforms are attached to their orbital mechanisms with six 1/420 hex socket flathead screws Grade 8. These screws are hardened and
should not be exchanged with any other screw type. The 5/32” hex socket
wrench, included with the shaker, must be used when attaching the
platform. Refer to Figure 1-7.
Caution Do not attempt to use a Phillips head screwdriver.
s
Figure 1-7. T-Handle Wrench and Hex Socket Head Screw
1. Insert the two 1/4-20 alignment pins into the two mounting holes
identified in Figures 1-8 and 1-9.
2. Rotate the drive mechanism until the four mounting holes generally
match the holes in the platform.
3. Place the platform onto the shaker and over the alignment pins.
4. Move the platform in an orbital motion until one or mor e of the
center mounting holes are located.
5. Insert the hex socket head screws as the four holes are located. Do not
tighten the screws.
6. Remove
the 1/4-20 alignment pins and replace them with the
remaining two hex socket screws.
7. Tighten all screws using the T-handle wrench.
Caution Use only the hex socket flat scr ews to fasten the platform, and
only the T-handle wrench to tighten the screws. Torque these screws to 10
ft/lbs. Check these screws monthly if the unit is operated at or near
maximum RPM (525 RPM).
s
Orbital Shaker 1-5Thermo Scientific
Section 1
Installation
Installing the
Platform (continued)
Figure 1-9. Hole Locations
Alignment Pins
= Platform Mounting Holes
= Mounting Holes for Off-Brand Equipment
Page 13
The lid of the console shaker is counterbalanced for ease of opening and
closing. A foot pedal on the lower right of the front of the cabinet is also
provided for operator convenience and ready access to the chamber.
Each flask clip up to 6.0 liters in siz e
includes a metal spring which must be
installed onto the clip. For flask clips
through 500 ml, insert the end of each
spring into the holes on the top of the clip
leg (Figure 1-10).
The 2 liter, 2.8 liter, 4 liter, 5
liter, and 6 liter flask clips
include two metal springs and
rubber spring tubes. On these
larger clips, the springs are
installed by hooking their ends
together as illustrated in Figure
1-6. The upper spring and
spring tubes should be installed
prior to mounting the clip to
the platform. The lower spring
and spring tubes, however, are
placed around the bottom of
the clip legs after the flask clip
is fastened to the platform.
Note that the rubber spring tubes are placed between the clip legs.
The Model 480/481 accommodates glassware in numbers and sizes from
ninety-one 25 ml flasks to four 6 liter flasks. All Thermo platforms have
mounting holes for flask clips and test tube racks made b y other
manufacturers.
1-6Orbital ShakerThermo Scientific
Section 1
Installation
Figure 1-10. Insert Springs
Figure 1-11. Spring Installation
Installing the Flask
Clips
Foot Pedal
Assembling Flask
Clips
Upper spring and
spring tubes
Clip leg
Lower spring and
spring tubes
Page 14
Table 1-1 lists the flask clip assemblies and kits av ailable for Thermo
shakers.
Table 1-1. Flask Clip Capacity and Kit Assemblies Dedicated Platform
Flask clips can be attached anywhere on the shaker platform. The counterbalanced design of these shakers accommodates the worst unbalanced load.
The flask clips are supplied with the proper screws and are attached to the
platform with a standard Phillips screwdriver or with the screwdriver
provided with the unit.
Figures 1-10 and 1-11 illustrate the installation of the flask clips. N ote that
clips for 1, 2, 2.8, 4, 5, and 6 liter flasks use fiv e screws. The 250/300l
flask clip has an adhesive-backed flask cushion pad which is installed on
the flat base of the clip body. A hole is provided in the pad for the
mounting screw.
Orbital Shaker 1-7Thermo Scientific
Section 1
Installation
Dedicated
platform no.
No. of
Clips
Flask SizeSprings per Clip
Screws per
Clip
2380179125ml11
2380189150ml11
23801940125ml11
23802040250/300ml1 w/ lg pad1
23802124500ml11
238022151l15
238023122l15
23802464l2 w/10 tubes5
23802546l2 w/12 tubes5
23802662.8l2 w/10 tubes5
Installing the Flask
Clips (continued)
Page 15
The accessory test tube racks and test tube rack holders ar e available in
four sizes and are listed in Table 1-2. All the test tube rack holders ar e
adjustable in seven positions, swinging and locking at 15°, 30° and 45° in
either direction. Figure 1-12 illustrates the Test Tube Rack Holder with the
rack in place.
To remove the rack, spread the metal tabs on either end of the holder and
lift it out.
1-8Orbital ShakerThermo Scientific
Section 1
Installation
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Installing the Test
Tube Holders
Figure 1-12. Holder with Rack
Part No.Description
950040Test tube rack 10-13mm size
950060Test tube rack 16-20mm size
600074Test tube rack 21-25mm size
600075Test tube rack 26-33mm size
600076Adjustable-angle test tube rack holder w/rack 10-13mm
600077Adjustable-angle test tube holder w/rack 16-20mm
600078Adjustable-angle test tube holder w/rack 21-25mm
600079Adjustable-angle test tube holder w/rack 26-30mm
6000892 tier microplate rack
6000903 tier microplate rack
194024
#10-24 Pan head Phillips screws for mounting test tube holders to Thermo
orbital shaker platforms
185062
Pan head Phillips screws, washers and nuts for mounting test tube holders to
Thermo 2568 and 2569 shaker baths
Figure 1-2. Racks and Holders
Spread metal tabs outward
to remove test tube rack
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Locking Pin to swing/tilt
test tube rack 15°, 30°, 45°
Page 16
To install the Test Tube Rack Holder onto
the shaker platform, remove the rack and
rotate the swing-bed of the holder 90° by
pulling the knobs of the locking pins on
either end of the holder outward. The
pins are locked in the outward position by
turning the knobs 1/4-turn (Figure 1-13).
The Model 480/481 Orbital Shaker is equipped with an RS-232 S erial
Communication Interface for the remote transmission of data. An RJ-11
telephone style connector is located on the back of the incubator . A cable
with RJ-11 plugs and an RJ-11 to DB-25 adapter ar e required. Refer to
Figure 1-15 for connector locations on the shaker back panel. F igure 1-14
identifies the pin connections.
Orbital Shaker 1-9Thermo Scientific
Section 1
Installation
RS-232 Interface
Connector
Installing the Test
Tube Holders (cont.)
Figure 1-13. Rotate Bed
Figure 1-14. RS-232 and Remote Alarm Connectors
Figure 1-15. Pins
Page 17
The data is “dumb terminal” formatted, which permits interfacing with
either a computer or a serial printer.
Three wires are used for the RS-232 interface:
1. Transmit data (/TXD) - pin 2 DB-25 connections
2. Receive data (/RXD) - pin 3DB-25 connections
3. Signal ground (GND) - pin 7DB-25 connections
The data format is:
Baud . . . . . 1200 (9600 baud w/ jumper at J2 on M ain Control Board)
Data bits . . . . . .8 (7 bit ASCII with leading zero)
The Model 480/481 transmits time, RPM and temperature information
one minute after power is first applied to the unit and then ev ery 60
minutes.
The shaker’s microprocessor responds to two ASCII commands fr om the
remote: DC1 (XON), and DC3 (XOFF)
1-10Orbital ShakerThermo Scientific
Section 1
Installation
RS-232 Interface
Connector (cont.)
Page 18
The shaker will transmit Time, Temperature and RPM data upon receiving
“DC1” (XON) and will restart 60 minute interval transmissions unless
inhibited by a “DC3” (XOFF).
Receiving a “DC3” (XOFF) from the remote inhibits the shaker from
sending serial data indefinitely until a “DC1” (XON) is received.
An internal, remote alarm SPDT relay is provided to monitor alarms and
is connected by an RJ-11 (telephone style) jack located on the r ear of the
cabinet. The relay provides NO (normally open) and NC (normally
closed) output and may be wired to a central remote alarm location or to
an independent alarm system.
Figure 1-14 identifies the pin contacts. Figure 1-16 shows the location of
the Remote Alarm Connector.
A modular to modular cable, Stock No. 190388 and an RJ-11 telephone
style terminal converter, Stock No. 190392 or equivalent may be used to
convert to a screw terminal connection. Refer to Figures 1-15 and 1-16.
To protect the contents of the shaker or pr event tampering or unauthorized
access, a security lock is located on the right side of the lid. S ee the
illustration below. Two keys for this lock are in the parts package attached
to the outside of this unit when shipped.
See the serial tag on the side of the unit for electrical specifications or r efer
to the electrical schematics at the end of this manual.
Caution Connect the orbital shaker to a grounded, dedicated circuit.
The power ON/OFF switch is the mains disconnect device for the orbital
shaker. Position the shaker so the switch is easily accessible.
s
1-12Orbital ShakerThermo Scientific
Section 1
Installation
Lid Security Lock
Figure 1-17. Rear and Side Panels
Figure 1-18. Front View with Grille and Kick Plate Removed
Power Switch/Circuit Breaker
Alarm
Contacts
Security
Key Lock
Foot
Pedal
30V max/
1A max
RS-232
Interface
Power Inlet
Access
Port
Condensate Drain
Page 20
Orbital Shaker 2-1Thermo Scientific
Section 2 Operation
The Console Model 480/481 is a microprocessor controlled, incubator/
refrigerated orbital shaker designed to accommodate a wide v ariety of
flasks, test tubes and other glassware. The control system is easily
programmed and stores the user-defined time, temperature and speed
settings which remain in memory even when the shaker is turned off and
unplugged.
The computer-based speed controller continuously adjusts for line voltage
fluctuations and provides smooth start-ups and consistent RPM control.
The circuitry is designed to slowly bring the platform up to speed and
down to a stop to prevent liquid splashing from flasks or test tubes.
The insulated lid with viewing port is counter-balanced for easy opening
by hand or foot pedal. A convenience interlock requires that the lid be
closed for the drive motor, circulating fans and refrigeration system to
operate.
Caution The microprocessor speed control system may take up to one
minute to bring the platform up to speed. N ever leave the shaker
unattended when starting. Make sure all flasks and test tube racks ar e
firmly seated in the clips and check the security of the flask clip and
platform attachment screws monthly. Air circulating fans will only operate
with the lid closed. Do not operate the shaker at maximum RPM without
a load.
s
Figure 2-1. Front View
Page 21
2-2Orbital ShakerThermo Scientific
Section 2
Operation
Operating the Control
Panel
The Model 480 control panel has a liquid crystal display and eight
operating keys or buttons which are identified by word and symbol.
During programming activities, the up and down arrows increase and
decrease the numerical values of time, platform speed, or temperature.
Pressing and holding either arrow will cause the values to scroll in that
direction. Pressing and holding for about five seconds will increase the
scrolling speed.
When programming the system configuration, the Up arrow returns the
display to the system’s Operating Screen showing the Time, RPM and
Temperature, while the Down arrow advances the display to the next
programming screen.
The alarm indicator and alarm silence button complete the shaker contr ol
panel. When in alarm, the unit sounds an audible warning and flashes the
three red indicators. Pressing the Silence button turns off the audible
portion of the alarm. However, the three flashing indicators continue to
flash until the alarm condition is corrected. The audible warning will
sound again in about fifteen minutes if the condition continues.
The alarm features are discussed in detail later in this section.
Figure 2-2. Control Panel
Page 22
Orbital Shaker 2-3Thermo Scientific
Section 2
Operation
Quick Start-Up
The Model 480 Orbital Shaker may be operated as soon as the platform is
installed, the unit is plugged in, and turned on.
Note At power up, the screen at the right will
briefly appear.
s
Pressing Start and Stop will operate the shaker at the factor y settings
shown in Figure 2-2. When starting, the Actual numbers along the top of
the liquid crystal display will differ from the Setpoint values shown along
the bottom. These numbers will change as the unit begins to operate.
Time - With the time set at Hold, the time display in the upper left por-
tion of the screen will begin to count upward, showing the total operating hours and minutes. The system will reset to 00:00 whenever the unit
is stopped and restarted, using the Stop and Start buttons. The unit will
not reset if the unit is turned off and on using the po wer switch, or if the
console lid is repeatedly opened and closed.
Speed - The Actual speed will display zero RPM’s and will gradually rise
to the setpoint as the platform begins its motion.
Temperature - The temperature, shown in the upper right por tion of the
liquid crystal display, will indicate the actual ambient temperature inside
the cabinet and will gradually move toward the 37° setpoint.
The values shown in Figure 2-2 are set at the factory and are considered
default values. Other factory settings are shown in the table below.
The Model 480/481 Shaker has been shipped from the factory with the
following default settings:
Time: When the shaker is turned on for the first time, the liquid cr ystal
display will show 00:00H. (Hold time) This means the unit is set to
record accumulated operating time. Any programming changes in the
Time settings are made in increments of five minutes.
RPM: The display shows the unit ready to operate at 100 RPM.
Programming changes in the RPM are made in increments of 1 RPM.
However, if the Up or Down buttons are held for about two seconds, the
display will scroll in that direction.
Temperature: The display shows the operating temperature set at 37°C.
Changes to the Temperature program settings are made in increments of
0.1°C. However, if the Up or Down buttons are held for about two seconds, the display will scroll in that direction.
Factory Settings
Page 23
To get the most from the shaker’s microprocessor-based technology, the
Model 480 can be easily programmed to meet the most demanding
laboratory requirements. The following sections outline the procedures for
changing the settings and for programming the shaker control system.
When the unit is turned on or when the shaker is operating, Temperature,
Time and RPM values are displayed on the LCD. A typical screen is
illustrated in Figure 2-2. For convenience, this is called the Operating
Screen throughout the operating manual. All programming or setting
changes start from this screen.
The instructions to program the Model 480 are written in a step-by-step
format. For convenience, these instructions begin and end at the O perating
Screen.
Caution At any time during programming or changing settings, if no
control panel buttons are pressed for about fifteen seconds, the display will
automatically return to the Operating Screen, storing any settings made.
New settings are stored immediately when either arrow key is pressed.
s
Press the button beneath temperature setpoint (Temp°C). The temperature
value will begin to flash.
Press the up or down arrows to set the new temperature in 0.1°C
increments. Hold either button to scroll.
Press the temperature button twice again to return to the Operating
Screen.
2-4Orbital ShakerThermo Scientific
Section 2
Operation
Other Factory
Defaults
FunctionDefault
Audible AlarmON
RPM Tracking Limit (fixed)5
Temperature Tracking Limit10°C
Over Temperature Shut-down63°C to 65°C
Under Temperature Shut-down-1°C to +2°C
All Remote AlarmsON
Changing Temp, Speed
& Time Settings
Changing the Temperature
Page 24
Orbital Shaker 2-5Thermo Scientific
Section 2
Operation
Changing the RPM
Press the button beneath the Speed setpoint. RPM value begins to flash.
Press the up or down arrows to set the new speed in 1 RPM increments.
Hold either button to scroll.
Press the Speed button again to return to the Operating Screen.
The Model 480 manages operating time in two ways:
Hold - When Time is set to Hold, the value shown in the Actual portion
of the display represents total operating time and may be r eset at the
operator’s convenience. The shaker will continue to count upwards even
if the console lid has been repeatedly opened and closed, or turned off
and on with the power switch. The Time will, however, reset to 00:00
when the Stop button is pressed and the unit then restarted by pressing
the Start button.
Countdown - When the Hold setpoint is changed to Countdown, enter-
ing a time value in hours and minutes programs the shaker to operate for
that period of time and automatically shut down. The display will show
the total time in the Setpoint segment and the operating time remaining
in the Actual part of the display, as the microprocessor counts down to
zero. An additional feature of the Model 480 is Hold Temperature. This
allows the operator to program the shaker to operate at one temperatur e
and then hold the cabinet at another temperature when the countdown
reaches zero. The platform will stop, but the fans and the temperatur e
control systems will continue to operate.
1. Press the button beneath the Time
setpoint. Hold will begin to flash.
2. Press either arrow to access the Countdown Time setpoint. The preset
time setpoint will begin to flash.
3. Press the up or down arrows to set the desired operating time in five
minute increments. Hold either arrow to scroll in that direction.
4. When the desired elapsed time is set (6 hours, 30 minutes in this
example), press the Time button to return to the Operating Screen.
Pressing the Start button will start the shaker and begin the countdo wn
sequence. As it counts down, the Actual time shown will decrease.
When 00:00 is reached, the shaker will automatically shut off and the
Cycle Complete alarm will sound.
Changing the Time
Changing from Hold to
Countdown
Page 25
The Model 480 Orbital Shaker control system monitors and provides
alarms for nine operating parameters.
Both audible and visual alarm warnings for these nine parameters ar e
provided by the orbital shaker. Visual flashing of the three diagonal
indicator lights on the control panel, a progression of text messages on the
display, and an audible tone alerts the operator that an alarm condition has
occurred or currently exists.
For convenience, the audible tone is silenced b y pressing the Silence
button, but will ring back in about 15 minutes. H owever, the alarm
warning indicator lights and alarm messages continue until the alarm
condition is corrected by the operator. Then, pressing the Silence button
clears the message from the display. (The Check Belt and Check Fuse
alarm messages clear from the display when the unit is turned back on after
correcting the alarm condition.)
As discussed in ‘Changing the Shaker Configuration’ in this section, the
audible alarm feature may be turned off to suit operator or laborator y
needs. Refer also to the alarms and corrective actions chart in the Service
section of this manual.
If power is interrupted for two hours or more while the Shaker is turned
on but not shaking, a Power Fail alarm will occur. The purpose of the
alarm in this case is to aler t the user that an extended duration power
failure occurred during the Hold interval after a timed shaking operation,
or during a period of incubation only. This alarm will also occur any time
the Shaker is turned on after an extended off period gr eater than 2 hours
(such as when the unit is shipped from the factory, or when it is returned
to use after a period of storage).
* The alarm will not occur if the po wer failure is less than 15 seconds in
duration.
2-6Orbital ShakerThermo Scientific
Section 2
Operation
Shaker Alarms
Page 26
Overtemp Shutdown alerts the operator
that the overtemp setpoint has been
exceeded by a few tenths of a degree.
The Overtemp Shutdown message will be displayed and the heaters turned
off, but the platform and blowers continue to operate.
In the alarm state, the audible alarm is silenced b y pressing the Silence
button, but will ring back in about 15 minutes. The screen message and
warning lights, however, will continue until the fault is corr ected. Then the
alarm message is cleared by pressing the Silence button.
Undertemp Shutdown alerts the operator
that the chamber temperature has gone
below the Undertemp setpoint by a few
tenths of a degree.
The Undertemp Shutdown message will be displayed and the refrigeration
will be turned off, but the platform and blowers continue to operate.
In the alarm state, the audible alarm is silenced b y pressing the Silence
button, but ring back in about 15 minutes. The screen message and
warning lights, however, continue until the fault is corrected. Then the
alarm message is cleared by pressing the Silence button.
Cycle Complete alerts the operator that
the end of the count-down running time
has been reached.
The Cycle Complete message shown is displayed and the shaker stops.
Pressing the Silence button clears the message from the display screen.
Power Failure alerts the operator that
electrical power to the shaker has been
interrupted, then restored during shaking.
The system will return to normal operation when power is restored,
however, the alarm message and audible tone continue to aler t the
operator. Both the display and audible tone are cleared by pressing Silence.
Orbital Shaker 2-7Thermo Scientific
Section 2
Operation
Overtemp Shutdown
Undertemp Shutdown
Cycle Complete
Power Failure
Page 27
RPM Tracking alerts the operator by
either alarm message shown below that
the platform speed has varied ±5 RPM.
Note A two minute alarm delay is built
into the software.
s
In the alarm state, the audible alarm is muted b y pressing the Silence
button, but rings back in about 15 minutes. The screen message and
warning lights, however, continue until the fault is corrected. Then, the
alarm message can be cleared by pressing the Silence button.
Check Belt alerts the operator that the
drive belt may have broken or
something is slowing or preventing platform movement.
In the alarm state, the audible alarm is muted b y pressing the Silence
button, but rings back in about 30 minutes. The screen message and
warning lights, however, continue until the fault is corrected. The alarm
message is cleared by cycling power to the unit OFF, then ON.
Sensor Fault alerts the operator that either
of the shaker’s two temperature sensors
have failed. An alarm message similar to
those shown at right indicates which
sensor has failed.
When in the alarm state, the audible alarm is muted b y pressing the
Silence button, but rings back in about 15 minutes if the fault condition
persists. The screen message and warning lights continue until the fault is
corrected.
When the sensor problem is corrected, the alarm message is cleared by
pressing the Silence button.
2-8Orbital ShakerThermo Scientific
Section 2
Operation
RPM Tracking
Check Belt
Sensor Fault
Page 28
Temperature High or Temperature Low
alerts the operator that the operating
temperature of the shaker has risen above
or fallen below the programmed
temperature tracking limit control point.
Therefore, either of the alarm messages shown at the right are displayed.
In the alarm state, the audible alarm is muted b y pressing the Silence
button, but rings back in about 15 minutes if the fault condition persists.
The screen message and warning lights continue until the fault is
corrected.
When the temperature problem is corrected, the alarm message is cleared
by pressing the Silence button.
Platform Stalled alerts the operator that
something is preventing free platform
movement. The motor automatically shuts
off and the audible alarm, screen message and warning lights are initiated.
The motor will attempt restart after approximately 15-20 seconds. The
motor will continue to cycle on and off until the obstr uction is removed,
or the unit is turned off. On motor restart, the audible alarm and warning
lights are automatically cleared. The screen message will remain until
cleared by the operator.
Check Fuse alerts the operator that
primary drive motor fuse has blown.
The audible alarm, screen message and
warning lights are initiated. When the unit is turned on after fuse
replacement, all alarm indicators are automatically cleared.
Orbital Shaker 2-9Thermo Scientific
Section 2
Operation
Temperature High or Low
Platform Stalled
Check Fuse
Page 29
To access the system Configuration menu, press the down arrow, the up
arrow, and the Silence button in that sequence.
This screen will appear on the display.
Pressing the down arrow continues with system configuration.
Pressing the up arrow returns to the Operating Screen.
Note During the following configuring procedures, menu options are given
to either modify a setting as it appears in sequence or scr oll past to the next
item. If no selection is made by pressing a button or arrow, the display will
revert to the Operating Screen in about fifteen seconds. The complete
configuration menu is shown in the chart at the end of this section.
s
Note In these procedures, values and settings for time, temperature, speeds,
alarms, and so forth are shown on the display screens. These numbers are
for example only and may not be the v alues encountered when
programming your shaker.
s
2-10Orbital ShakerThermo Scientific
Section 2
Operation
Changing the Shaker
Configuration
Page 30
Begin by pressing the down arrow, the up arrow, and
the Silence button. The screen following will appear
on the display:
When this screen opens, press the down arrow once.
At this screen (above), press the Time button beneath Audible. The
following screen will appear and the current setting will flash.
Press the up or down arrow to turn the
audible alarm function on or off.
Pressing any of the three buttons
(Time, Speed, or Temp) will return the
display to the previous screen. Not
pressing anything for about fifteen seconds returns the display to the
Operating Screen.
When the audible alarm is disabled, a warning message is placed in the
Setpoint portion of the Operating
Screen display as illustrated at right.
Three temperature alarms are programmed into Model 480 Orbital
Shaker; Overtemperature, Undertemperature, and Tracking Limits.
Orbital Shaker 2-11Thermo Scientific
Section 2
Operation
Turning the Audible Alarm
On and Off
Setting Alarm Limits
Page 31
The Overtemperature alarm activates whenever the operating temperature
goes above the Overtemp setpoint temperature by a few tenths of °C. This
adjustable limit is set at the factor y at approximately
64°C. To change this value, open the Configuration
menu by pressing the down arrow, up arrow, and the
Silence button in the sequence shown at the right.
When this screen (below) opens....
Press the down arrow once ....
And then press the Temperature button beneath Alarms.
To change the overtemperature alarm setting, press the Time button
beneath Over. The following screen will appear and the current overtemperature alarm setting will flash.
Change the temperature setting by pressing the up or down arrow. When
set, press the Temperature button to return to the previous screen or press
nothing for about fifteen seconds. The display will change to the
Operating Screen, saving the new settings into memory.
2-12Orbital ShakerThermo Scientific
Section 2
Operation
Setting the Overtemperature
Alarm
Page 32
When the overtemperature setpoint is exceeded by a few tenths of a
degree, the control system will shut the heating system do wn by turning
off the heaters.
The Overtemp Shutdown warning shown above will be displayed, the
warning lights will flash and the audible warning (if not turned off ) will
sound.
Pressing the Silence button will turn off the audible alarm. H owever, the
warning lights will continue to flash and the alarm message will continue
to be displayed until the over-temperature condition is corrected. The
audible warning will also sound again in about 15 minutes if the
overtemperature condition persists.
When the fault is corrected, press the Silence button to clear the alarm
message from the display.
The Undertemperature alarm activates whenever the operating temperature
goes below the undertemp setpoint temperature by a few tenths of a °C.
This adjustable limit is set at the factor y at
approximately -1°C. To change this value, open the
Configuration menu by pressing the down arrow,
up arrow, and the Silence button in the sequence
shown at the right.
When this screen (below) opens....
Press the down arrow once ....
And then press the temperature button beneath Alarms.
Orbital Shaker 2-13Thermo Scientific
Section 2
Operation
Setting the Overtemperature
Alarm (continued)
Setting the Undertemperature
Alarm
Page 33
To change the undertemperature alarm setting, press the Speed button
beneath Under. The following screen will appear and the curr ent
undertemperature alarm setting will flash.
Change the temperature setting by pressing the up or down arrow. When
set, press the Temperature button to return to the previous screen or press
nothing for about fifteen seconds. The display will change to the
Operating Screen, saving the new settings into memory.
When the undertemperature setpoint is exceeded by a few tenths of a
degree, the control system will shut the cooling system do wn by turning
off the refrigeration system.
The Undertemp Shutdown warning shown above will be displayed, the
warning lights will flash and the audible warning (if not turned off ) will
sound.
Pressing the Silence button will turn off the audible alarm. H owever, the
warning lights continue to flash and the alarm message r emains until the
undertemperature condition is corrected. The audible warning will sound
again in about 15 minutes if the under temperature condition persists.
When the fault is corrected, press the Silence button to clear the alarm
message from the display.
2-14Orbital ShakerThermo Scientific
Section 2
Operation
Setting the Undertemperature
Alarm (continued)
Page 34
The Temperature Tracking alarm activates whenever the
operating temperature goes above or below the setpoint
temperature by a predetermined value. This adjustable
limit is set at the factor y as 10° above and below the
temperature setpoint.
Note The above and below limits are always the same value.
s
To change this limit, open the configuration menu as in the pr evious alarm
procedures, by pressing the buttons in the sequence sho wn.
When this screen (below) opens, press the down arrow once ....
then press the temperature button beneath Alarms.
Then, from the screen below, press the temperature button beneath
Tracking.
The following screen will appear and the present temperature tracking
alarm limit setting will flash.
Change the temperature tracking limit by pressing the up or down arrow.
When set, press the Temperature button to save the setting and return to
the previous screen. If no buttons are pressed for about fifteen seconds, the
display will change to the Operating Screen, saving the new setting to
memory.
Orbital Shaker 2-15Thermo Scientific
Section 2
Operation
Setting the Temperature Alarm
Tracking Limit
Page 35
When the chamber temperature
rises above, or falls below, the
temperature tracking limit, the
appropriate message is displayed,
the warning lights flash and the audible warning (if not turned off )
sounds.
Pressing the Silence button turns off the audible alarm. However, the
warning lights continue to flash and the alarm message r emains until the
high or low temperature condition is corrected. The audible warning
sounds again in about fifteen minutes if the o ver or under temperature
tracking condition persists.
When the fault is corrected, press the Silence button to clear the alarm
message from the display.
From the Operating screen, press the down arrow, up
arrow and Silence button in that sequence (shown at
the right) to open the Configuration menu.
From the screen below, press the down arrow twice to bring up the
following screen.
Press the Speed button beneath RPM.
The value shown on this screen is the present speed setpoint. Using the up
and down arrows, increase or decrease the platform speed until the r eading
on an independent, accurate speed measuring device matches the shaker
speed setpoint.
When finished, press the Speed button to save the setting. The display will
return to the Calibrate - RPM Temp screen. Or, if nothing is pressed for
about fifteen seconds, the display will revert to the Operating Screen and
the setting will be automatically saved to memory.
2-16Orbital ShakerThermo Scientific
Section 2
Operation
Calibrating the RPM
Setting the Temperature Alarm
Tracking Limit (continued)
Page 36
Begin by pressing the down arrow, the
up arrow, the Silence button, and then
the down arrow twice. The screen below
will appear on the display:
Press the Temperature button beneath Temp.
Using the up and down arrows, increase or decrease the temperature value
to match an independent, accurate temperature measuring device. When
selected, press the Time, Speed, or Temp button to save the setting. The
display will return to the Calibrate - RPM Temp screen. (Or, if nothing is
pressed for about fifteen seconds, the display will r evert to the Operating
Screen and the setting will be automatically sav ed to memory.)
Any of the alarm states described per viously can alert a remote alarm
monitoring system through an internal SPDT relay connected to an RJ-11
jack on the rear of the shaker cabinet. For the convenience of the
laboratory, these remote alarms can be individually turned on or off . Any
or all of the remote alarms which are set to On will activate the internal
relay.
If no buttons are pressed, the display will automatically return to the
Operating Screen after about fifteen seconds, saving the selection to
memory.
Note The Remote Overtemp Shutdown and Check Fuse alarms cannot be
deactivated.
s
Orbital Shaker 2-17Thermo Scientific
Section 2
Operation
Calibrating the
Temperature
Remote Alarm System
Page 37
To set the remote alarms to On or Off, open the Remote Alarm
Configuration menu by pressing
the down arrow, up arrow, and
silence buttons in that sequence.
Then, press the down arrow
three times until the screen
below is showing.
Press Rmte (remote). The alarms will be shown in the sequence following.
Toggle the Cycle Complete alarm with either the up (O n) arrow or the
down (Off) arrow. Pressing the Next (temperature) button advances the
display to the next alarm, saving the shown Cycle Complete alarm setting
to memory.
Toggle the Power Failure alarm with either the up (ON) arr ow or the down
(OFF) arrow. Pressing the Next (temperature) button advances the display
to the next alarm, saving the Power Failure setting to memory.
Toggle the RPM Tracking alarm with either the up arrow (ON) or the
down arrow (OFF). Pressing the Next (temperature) button advances the
display to the next alarm, saving the RPM Tracking setting to memory.
2-18Orbital ShakerThermo Scientific
Section 2
Operation
Cycle Complete
Remote Alarm System
(continued)
Power Failure
RPM Tracking
Actual
Setpoints RunHrs
for more
Rmte
Heat%
Page 38
Toggle the Check Belt alarm with either the up (on) arr ow or the down
(off) arrow. Pressing the Next (temperature) button advances the display to
the next alarm, saving the Check Belt setting to memory.
Toggle the Sensor Fault alarm with either the up (ON) arrow or the down
(OFF) arrow. Pressing the Next (temperature) button advances the display
to the next alarm, saving the on/off setting to memor y.
Toggle the Temperature High/Low alarm with either the up (ON) arr ow
or the down (OFF) arrow. Pressing the Return (temperature) button
returns the display to the previous screen.
Whether the shaker has been operated in the H old or Countdown modes
and/or has been turned off and unplugged many times, the micr oprocessor
control system maintains a running total operating hours.
To view this information, access
the Configuration menu by
pressing the down and up arrows
and the Silence button in
sequence, then pressing the
down arrow three times.
Orbital Shaker 2-19Thermo Scientific
Section 2
Operation
Check Belt
Sensor Fault
Temperature High or Low
Viewing the Total
Operating Hours
Page 39
Pressing RunHrs shows the total accumulated run hours as displayed in the
illustration below. In about fifteen seconds, the display will r eturn to the
Operating Screen.
Caution Heat percentages are intended for factory use only, and can be
helpful in troubleshooting the heat control system.
s
To view this information, press
Heat % from the previous screen
or access the Configuration
menu by pressing the down
arrow, the up arrow and the
Silence button in that sequence, then press the down arrow three times.
Press Heat %.
Main Heat % is the percentage of time that the temperature control
system’s heaters are turned on during a five second
period. Example: If the heaters are being cycled on
for two seconds and off for three seconds, the Heat %
value is 40 percent.
Refrig Heat % is the percentage of time that the r efrigeration system
capillary tube heater is operating during a fiv e second period.
Return to the RunHrs Rmte Heat% screen by pressing any of the three
buttons beneath the display. If no buttons are pressed, the display will
automatically return to the Operating Screen in about fifteen seconds.
2-20Orbital ShakerThermo Scientific
Section 2
Operation
Heat %
Viewing the Total
Operating Hours (cont.)
Actual
Setpoints RunHrs
for more
Rmte
Heat%
Time
for more
Rmte
Speed Temp C
Heat%
o
Actual
Setpoints RunHrs
Page 40
Software Version is for factory use only and will be impor tant if
troubleshooting the microprocessor programming is ever necessary.
To access this screen, press
the down arrow, the up
arrow, the Silence button,
and then the down arrow
button four more times.
The screen below will appear on the display:
Press the Time button beneath SwVers and the following screen will appear
showing the Model 480 software version in the control system memory.
To return to the previous screen, press the Time
button. To return to the Operating Screen, wait
about fifteen seconds.
Temperature Sensor Readings is for factory use only and will be important
if troubleshooting the microprocessor programming is ever necessary.
To access this screen, press the down arrow, the up arrow, the Silence
button, then the down
arrow button four more
times. The screen below
appears on the display:
Press the Speed button beneath O-temp
and the screen at the right will appear,
showing the temperatures being measured
or read by the Overtemperature sensor.
To return to the previous screen, press the Time, Speed, or Temperature
button. To return to the Operating Screen, wait about fifteen seconds.
Orbital Shaker 2-21Thermo Scientific
Section 2
Operation
Software Version
Temperature Sensor
Readings
Overtemp Sensor
Actual
Setpoints
SwVers O-temp
return
Actual
Setpoints
SwVers O-temp
return
Page 41
This control allows the shaker to be operated without heat or r efrigeration.
To access this screen, press
the down arrow, the up
arrow, the Silence button,
then the down arrow four
more times.
The screen shown below will appear on the display:
Press the temperature button beneath T-ctrl and the screen shown below
will appear.
Toggle the Temperature Control with either the up (ON) arr ow or the
down (OFF) arrow.
Pressing the Time, Speed, or Temp buttons returns the screen to the
previous (SwVers O-temp T-ctrl) display. If no buttons are pressed, the
display will automatically return to the Operating Screen after about fifteen
seconds, saving selection to memory.
Defrosting of this shaker automatically takes place about ev ery eight hours.
When turned on, the system increases the cabinet temperature until it
reaches the 12°C or 14°C defrost setpoint. At that time, the defrost
continues for about three minutes, then shuts off.
2-22Orbital ShakerThermo Scientific
Section 2
Operation
Defrost Control
Temperature Control
Actual
Setpoints
SwVers O-temp T-ctrl
to return
Page 42
To turn the defrost system on and off, press the down arrow, the up arrow,
the Silence button, then the down arrow button five more times.
The screen shown below will appear on the display:
Press the Speed button beneath On/Off and the following screen will
appear:
Toggle the Defrost Control with either the up (ON) arrow or the down
(OFF) arrow.
Pressing the Time, Speed or Temp buttons will return the screen to the
previous (Defrost on/off, Temp) display.
If no buttons are pressed, the display will automatically return to the
Operating Screen after about fifteen seconds, saving selection to memor y.
To toggle the defrost temperature between 12°C and 14°C, press the down
arrow, the up arrow, the Silence button, then the down arrow button five
more times.
The screen shown below will appear on the display:
Orbital Shaker 2-23Thermo Scientific
Section 2
Operation
Turning the Defrost
System On and Off
Setting the Defrost
Temperature
Page 43
Press the temperature button beneath Temp and the following screen will
appear:
Toggle between the two defrost temperatures using the up and down
arrows.
Press Time, Speed, or Temp to return to the previous screen or press
nothing and the display will automatically return to the Operating Screen
after about fifteen seconds, also saving the setpoint to memor y.
Another useful feature of the Model 480 Series Shaker is the ability to hold
the product at a specific temperature after operating for a predetermined
time.
A typical scenario is shown below. The illustration shows the shaker
operating at 250 RPM with the cabinet temperature at 37°C. The 06:30
time value in the lower left corner of the screen indicates that the shaker is
counting down and will stop in 6 hours and 30 minutes.
The next illustration shows that the time has counted down to zero and
the shaker has stopped orbiting (zero RPM’s). The temperature value of
5.0° in the lower right corner of the screen is the temperature at which the
product is being held. This hold will continue at this temperatur e until the
Start button is pressed or a new hold or operating temperature is entered.
2-24Orbital ShakerThermo Scientific
Section 2
Operation
Hold Temperature
Control
Setting the Defrost
Temperature (continued)
Page 44
To set a new hold temperature, press the temperature button twice. The
screen below will appear. The Hold temperature will flash.
Using the up and down arrows, program a new hold temperature. Press the
temperature button to save the new setting and return to the Operating
Screen.
Orbital Shaker 2-25Thermo Scientific
Section 2
Operation
Hold Temperature
Control (continued)
Page 45
2-26Orbital ShakerThermo Scientific
Page 46
Orbital Shaker 2-27Thermo Scientific
Page 47
2-28Orbital ShakerThermo Scientific
Page 48
Orbital Shaker 2-29Thermo Scientific
Page 49
2-30Orbital ShakerThermo Scientific
Page 50
Orbital Shaker 2-31Thermo Scientific
Page 51
Page 52
Orbital Shaker 3-1Thermo Scientific
Section 3 Maintenance
The Model 480/481 Shaker uses a brushless DC motor and oversized,
permanently lubricated bearings which require no maintenance.
The anodized brushed aluminum platform and powder-coated steel cabinet
surfaces can be cleaned with common laborator y materials. However,
liquids should not be allowed to enter the shaker cabinet from under the
platform. All spills should be cleaned up immediately. If necessary, remove
the platform. Follow ‘Installing the Platform’ procedure in Section 1 when
re-installing the platform.
The microprocessor control panel uses sealed push buttons and liquid
crystal display and may be cleaned with laborator y detergents and dried
with a soft cloth.
The air filter (9.5” x 23.625”) is located behind the grille on the fr ont of
the cabinet. The grille is held in place b y six press-in type retainers and is
easily removed by grasping it by its edges and pulling it off .
The air filter is held in place by four retaining springs (Figure 3-1) and is
easily removed. It may be washed in water with a mild detergent and dried
between two lint-free towels.
Shaker Platform and
Cabinet
Control Panel
Cleaning/Replacing
the Cabinet Air Filter
Figure 3-1. Interior View of Front Grille with Filter
Page 53
3-2Orbital ShakerThermo Scientific
Section 3
Maintenance
Servicing the Drive
Belt
The motor drive pulley, the large mechanism pulley, belt and motor
mounting bolts will be visible, after removing the grille (Figure 3-2).
Loosening the three 1/4-20 bolts at the base of the driv e motor allows the
belt to be changed or tension applied to the belt. Tighten the three bolts
and torque to 120 in/lbs.
To remove the pulleys from their shafts, use a 1/8” Allen wr ench to remove
two set screws from the belt groove of the larger pulley; use a 5/32” Allen
wrench to remove the single set screw from the belt groove of the smaller
pulley.
When replacing the pulleys, seat the larger pulley completely against the
shoulder of the mechanism drive shaft. The smaller pulley, however, is
installed with 0.300” space between it and the baseplate.
Figure 3-2. Front View of Cabinet with Grille Removed
Figure 3-3. Motor/Belt Drive System
Page 54
Orbital Shaker 3-3Thermo Scientific
PREVENTIVE MAINTENANCE
Shakers
Your equipment has been thoroughly tested and calibrated before shipment. Regular preventive maintenance is important to keep your unit function-
ing properly. The operator should perform routine cleaning and maintenance on a regular basis. For maximum performance and efficiency, it is rec-
ommended that the unit be checked and calibrated periodically by a qualified service technician.
The following is a condensed list of preventive maintenance requirements. See the specified section of the instruction manual for further details.
We have qualified service technicians, using NIST traceable instruments, available in many areas. For more information on Preventive Maintenance
or Extended Warranties, please contact us at the number below.
Cleaning and calibration adjustment intervals are dependent upon use, environmental conditions and accuracy required.
Tips for all shakers:
• Use only Thermo standard flat-head screws for flask clips.
• Use only Thermo standard round-head screws for test tube racks, holders and utility trays.
•401 Millcreek Road, Box 649 •Marietta, Ohio 45750 USA •740-373-4763
•USA and Canada 888-213-1790 •Telefax: 740-373-4189 •http://www.service.led.marietta@thermofisher.com
Page 55
3-4Orbital ShakerThermo Scientific
Preventive Maintenance for Models 480 and 481 Shakers
Refer to Manual SectionActionDailyMonthlyYearly
--Clean the unit with mild detergent and wipe dry as needed.þ
--Clean the window with a mild detergent and wipe dry.þ
--Check under the platform for broken glass or other debris.þ
--Inspect and/or clean the condenser.þ
4.1cInspect air filter. Clean as needed.þ
3.8* Check and document calibration of temperature, alarms, speed and time, as applicable.þ
--* Verify operation of circulation fan motor.þ
5.2Change the HEPA filter as needed.þ
* Qualified service technicians only
Page 56
Orbital Shaker 4-1Thermo Scientific
Section 4 Service
Warning The procedures outlined in this section should be carried out
only by qualified service personnel or people trained and cer tified in
electrical/ mechanical repair of laboratory equipment.
s
With the exception of the HEPA filter, the Model 480/481 Orbital Shaker
contains no user-serviceable components. The following table lists display
messages which may help diagnose abnormal conditions.
If the microprocessor control system senses a fault, malfunction or
abnormal operating condition, alarm messages will appear on the liquid
crystal display. These messages will be helpful should ser vice or repair
assistance be necessary. Refer to the table below and to the alarm matrix
following in this section.
Table 4-1. Alarm Messages and Fault Conditions
Alarms and Alarm
Conditions
Alarm MessageFault Condition
Overtemp Shutdown System shutdown due to overtemp condition
Main Temp SensorTemperature sensor has failed
Over Temp SensorTemperature sensor has failed
Temperature is HighTemp tracking has sensed higher temperature than setting
Temperature is LowTemp tracking has sensed lower temperature than setting
RPM HighRPM tracking has sensed shaker speed higher than setting
RPM LowRPM tracking has sensed shaker speed lower than setting
Power FailurePower has failed during shaker operation
Cycle CompleteEnd of countdown cycle has been reached
Check BeltMotor V-belt has broken or slipped
Audible is Disabled! Continuously notifies operator that audible alarm has been disabled
Platform StalledFree movement of the platform is obstructed
Check FusePrimary drive motor fuse has blown
Page 57
4-2Orbital ShakerThermo Scientific
Section 4
Service
Changing the HEPA
Filter
The HEPA filter (P/N 760164) is located on the left side of the chamber
and is accessed by pulling up on the four, black press-in fasteners and
sliding the cover off. Refer to the illustration below.
Figure 4-1. Lid Open Showing Locations
If the shaker platform will not operate with the unit plugged in and the
power switch turned on, the following conditions may be present:
•The lid may be open - Lo wer the lid to its fully closed position.
•Time countdown reached - Reset the time or change to a pre-set
program.
Three fuses are located on the left side of the r elay tray located in the lower
part of the console cabinet. Figure 4-2 shows the location of the fuses.
Access to the relay tray is made by removing the grille on the front of the
cabinet. It is held in place by six press-in type retainers and is easily
removed by grasping the edges of the grille and pulling.
To remove the panel beneath the grille, r emove six Phillips screws; three on
the bottom of the panel and three on the top. The two Phillips screws on
the left side of the foot pedal will need to be loosened to allo w the panel
to be slid outward.
If the Shaker Will Not
Operate
Fuses
Page 58
Orbital Shaker 4-3Thermo Scientific
Section 4
Service
Table 5-2. Fuses
Caution Do not substitute! Replace these fuses with fuses of identical
electrical ratings only.
s
Figure 5-2. Fuse and Connector Locations
Warning Never use the recorder plug-in outlet with the grounding
conductor disconnected.
s
Fuses, Model 480
RatingApplicationPart Number
0.25 amp Main Power Relay Board230144
1.6 amp Drive Motor 230145
0.1 amp Recorder (opt.)30107
Fuses, Model 481
Rating Application Part Number
0.15 amp Main Power Relay Board230142
0.8 amp Drive Motor 230141
0.1 amp Optional Recorder 230107
Fuses (continued)
Page 59
Five circuit boards control the Orbital Console Shaker. Four boards are
located in the relay tray compartment, the fifth is behind the liquid cr ystal
display. Figure 4-3 identifies the circuit boards and other major
components in the relay tray.
Refer also to the relay tray illustrations on Page 4-7 & 4-8.
Two temperature sensors are located behind a perforated cover plate on the
right side of the chamber (refer to Figure 4-4). To access these sensors,
pull outward on the two black press-in fasteners on the top edge of the
cover and lift the cover upward. The cover is held in place by four metal
clips.
Figure 4-4. Right Side Chamber - Temperature Sensor Cover Plate Removed
To replace the cover, make sure all four clips engage
the metal edges of the chamber and the two fasteners
are firmly seated in their holes. Press the top of the
fastener inward until a “click” is heard. (Refer to
Figure 4-5.)Figure 4-5. Press-in
Sheet Metal Fastener
Locations of the blower motor and ambient fan motor are shown in Figure
4-6 (refrigeration unit removed).
Removal of the relay tray is necessary to service the blower motor or the
heating elements.
Figure 5-6. Air Plenum with Heating and Air Moving Components
Orbital Shaker 4-5Thermo Scientific
Section 4
Service
Temperature Sensors
Blower Fan Motors
and Heating Elements
Page 61
A manual reset circuit breaker is located between the heating element
electrical connectors on the side of the air plenum. (F igures 4-6 and 4-7)
To access this circuit breaker, remove the front grille and remove the four
Phillips screws securing the relay tray. Move or tip the relay tray far
enough away from the air plenum to reach the reset button.
Warning Disconnect and lock-out electrical power when working on or
near the relay control tray and heating element connectors. Allow sufficient
time for the heating elements to cool before reaching into that area.
s
After the console cabinet is in place, leveled and the platform installed,
turn the unit on and set the RPM to 300. Kneeling in fr ont of the
console, lightly touch the lower left and right corners of the cabinet. I f one
side seems to vibrate more then the other, raise or lower the corner support
leg using the 3/4” open end wrench supplied in the parts bag. Continue
this “fine tuning” until the vibrations are lowered as far as possible.
4-6Orbital ShakerThermo Scientific
Section 4
Service
Heater Element
Circuit Breaker
Figure 4-7. Heating Element Connectors and Manual Reset Circuit Breaker
Humidity . . 80% RH at or belo w 31°C, decreasing linearly to 50% RH
at 40°C
Mains Supply Fluctuations Operating Voltage Range
Installation Category II
1
Pollution Degree 2
2
Class of Equipment I
Climatic Condition - ST (EN 60335, S ubtropical)
_________________________________________
1 Installation category (overvoltage category) defines the level of transient over-
voltage which the instrument is designed to withstand safely. It depends on
the nature of the electricity supply and its o vervoltage protection means. For
example, in CAT II which is the categor y used for instruments in installations supplied from a supply comparable to public mains such as hospital and
research laboratories and most industrial laboratories, the expected transient
overvoltage is 2500V for a 230V supply and 1500V for a 120V supply .
2 Pollution Degree describes the amount of conductive pollution present in the
operating environment. Pollution Degree 2 assumes that normally only nonconductive pollution such as dust occurs with the ex ception of occasional conductivity caused by condensation.