Drucker Diagnostics 642B User manual

642B
Operator’s Manual
P/N 03-0-0002-0078 Rev. H

TABLE OF CONTENTS
Caution and Warning Statements................................................................1
Model Description ....................................................................................... 2
Intended Use: ..............................................................................................2
Warranty......................................................................................................2
Supplied Equipment.....................................................................................3
Features ....................................................................................................... 3
General Specifications .................................................................................3
Setup Location .............................................................................................4
Initial Setup Procedure ................................................................................5
Operation.....................................................................................................6
Spinning Balanced Loads .............................................................................7
Rotor Removal And Installation................................................................... 7
To remove the rotor:...............................................................................7
To install the rotor:..................................................................................7
Care And Preventative Maintenance...........................................................8
Cleaning and Disinfection ............................................................................ 9
Troubleshooting.........................................................................................10
Emergency Rotor Chamber Entry ..............................................................12
Calibration Testing..................................................................................... 12
Safety .........................................................................................................12
Replacement Parts.....................................................................................13
Available Accessories................................................................................. 13

Page | 1 Drucker Diagnostics [phone] - [e-mail]
CAUTION AND WARNING STATEMENTS
•This device is intended to be operated by properly trained personnel
who have carefully read the operating manual and are familiar with the
function of the device.
•For the safety of both the operator and service personnel, care should
be taken when using this centrifuge if handling substances that are
known to be toxic, radioactive or contaminated with pathogenic
microorganisms. When Risk Group II materials are used, (as identified in
the World Health Organization “Laboratory Bio-Safety Manual”), a Bio-
Seal should be employed. The Bio-Seal accessory for the model is the
non-aerosol shield cap with appropriate tube holders (contact Drucker
Diagnostics to purchase). In the event that materials of a higher risk
group are being used, more than one level of protection must be
provided.
•The use of flammable or explosive materials as well as those materials
which have a vigorous chemical reaction is prohibited.
•For your safety and the durability of your machine, never transport or
store centrifuge with tube holders inside machine.
•Inspect centrifuge for cracks or physical damage to cabinet, lid, rotor, or
tube holders. Damage may result in unsafe operation. Discontinue use
until repairs have been performed.
•Users should also comply with the specimen receptable manufacturer’s
specific instructions for use, in addition to any other protocols
established by the testing organization

Drucker Diagnostics [phone] - [email protected] Page | 2
MODEL DESCRIPTION
The Model 642B is a continuous-duty, horizontal centrifuge. The unique
rotor design allows for horizontal operation without the need for any
extra parts beyond tube carriers. The unit is controlled by a mechanical
timer settable from 1 to 30 minutes. Samples can be safely viewed
through the transparent lid. In the event that the lid is opened during a
run, the power to the motor is disconnected.
This general-purpose laboratory centrifuge may also be used to spin
approved containers with biologics, chemicals (non-flammable, non-
explosive, non-volatile, and non-highly reactive), and environmental
samples.
INTENDED USE:
General purpose laboratory centrifuge, intended for the density-based
separation of fluids through centripetal acceleration.
WARRANTY
Drucker Diagnostics warranties that this centrifuge is free from defects in
workmanship and parts for 2 years.

Page | 3 Drucker Diagnostics [phone] - [e-mail]
SUPPLIED EQUIPMENT
One (1) six–place horizontal rotor
P/N 7786061
Six (6) 75/100mm tube holders
P/N 7713079
The rotor and accessories are rated for a rotation frequency of 4,000 RPM.
For optional accessories, see page 13 of this manual.
FEATURES
•Swing–out horizontal rotor design incorporating a unique test
tube holder that produces horizontally separated samples while
requiring no additional parts
•Cool–Flow air flow design that prevents overheating of samples
•Heavy gauge steel construction for safety and durability
•Lid safety switch that prevents the centrifuge from operating
unless the lid is closed and latched
•Removable rotor for easy cleaning
•Brushless permanent split capacitor AC motor
•Clear lid for safe observation of samples and optical calibration
of speed
GENERAL SPECIFICATIONS
Nominal Speed (Horizontal)
3,380 (+/- 100) RPM
Nominal RCF (Horizontal)
1,600 (+/- 90) xg
Maximum capacity (Horizontal)
60 mL (6 x 10 mL)
Overall Dimensions (H x W x D)
8.75 in. x 11.75 in. x 14 in.
Centrifuge Motor:
1/30 HP, p.s.c. motor
Maximum Acceleration Time
10 seconds
Protection Breaker
4 Amp. re–settable
Timer
electronic, 1 to 30 minutes,
+/– 10%
Current Requirement
1.5 Amps
Voltage Requirement
115 (+/- 10) Volts
Frequency
60 Hz
Weight
11 lbs
Any use other than those specified by the Manufacturer is explicitly prohibited.
Maximum sample density is 1.15 grams / mL, (water density = 1.0 grams / mL)

Drucker Diagnostics [phone] - [email protected] Page | 4
SETUP LOCATION
1. Unpack the centrifuge and verify that all of the supplied
equipment is present.
2. Choose a setup location which meets the following criteria:
a. A clearance height of 20” is required to open the lid.
b. The clearance envelope is the space around the centrifuge
which is required for safety. Choose a setup location which
will allow for a clearance envelope of at least 24” x 24”,
(with the centrifuge at the center). No person or hazardous
material shall be permitted in the clearance envelope during
operation. The operator time within the envelope shall be
limited to the time necessary for loading, unloading and
centrifuge operation only.
c. Proper ventilation is necessary to prevent the overheating of
samples as well as premature failure of the centrifuge.
Choose an area which will allow unencumbered air flow.
d. The centrifuge is designed to secure to the operating surface
by four suction feet. No adjustment is necessary for leveling
the centrifuge; however, the surface should be flat and level.
e. Be sure the outlet is always within reach as the line cord is
the means of emergency disconnection!

Page | 5 Drucker Diagnostics [phone] - [e-mail]
INITIAL SETUP PROCEDURE
If any problems are found during the initial setup procedure, refer to the
troubleshooting section on page 10. For further assistance, contact
Drucker Diagnostics at 814-692-7661.
1. Plug the centrifuge in to an approved electrical outlet. For
electrical safety, the unit must always be properly grounded.
2. Spin the rotor by hand, check for free and level rotation. If the
rotor does not spin freely refer to page 10 on troubleshooting.
3. Place the six test tube holders inside the rotor and verify that
they are seated properly.
4. Close the lid. Rotate the lid knob clockwise to its complete stop
position.
5. Turn the centrifuge on by turning the timer to 10 minutes.
6. The test tube holders will slide up into the horizontal position
and the unit will accelerate to full speed.
7. Listen to the sound of the centrifuge. A smooth whirring sound
should be heard. If there are any loud or unusual sounds, stop
the centrifuge by turning the timer to zero (0).
8. While the machine is running, try to turn the latch
counterclockwise.
9. Power should be cut to the motor
10. If the motor power is not cut when the lid latch is opened,
contact Drucker Diagnostics for assistance
After the centrifuge has passed this procedure, it is ready for operation.

Drucker Diagnostics [phone] - [email protected] Page | 6
OPERATION
NOTE: Follow the initial setup procedure on page 6 before initial operation.
1. Plug the centrifuge into an approved 115 Volt A.C., 60 Hz. outlet.
2. Turn the latch counterclockwise and open the lid.
NOTE: If the desired rotor is not installed, go to page 8 for the rotor removal and
installation procedure.
3. Place the test tube samples into the tube holders. Be sure to
follow the rules for balanced loads (page 7).
4. Close the lid and turn the lid knob clockwise to its complete stop
position.
5. Turn on the machine by turning the timer to the desired run
time. The centrifuge should begin to spin.
IF A PROBLEM IS FOUND DURING A SPIN THAT REQUIRES THE CENTRIFUGE TO
SHUT DOWN, PRESS THE ‘OPEN / STOP’ BUTTON!
6. Once the timer reaches zero (0), power will be cut to the motor
and the rotor will coast to a stop. Do not open the lid until the
rotor has come to a complete stop.
7. Turn the lid knob counterclockwise and open the lid.
8. Remove the samples.
9. The centrifuge is immediately ready for operation.

Page | 7 Drucker Diagnostics [phone] - [e-mail]
SPINNING BALANCED LOADS
Your centrifuge must contain a balanced load in order to work properly.
Use the following rules when loading the rotor.
Spinning balanced loads will extend the life of the machine and produce
better results.
1. Opposing tube holders must be identical and must contain the
same cushion, or none at all.
2. Opposing tube holders must be empty or loaded with equally
weighted samples.
3. If an odd number of samples is to be spun, fill a tube with water
to match the weight of the unpaired sample and place it across
from this sample.
ROTOR REMOVAL AND INSTALLATION
TO REMOVE THE ROTOR:
1. Unlock the centrifuge by pushing the ‘OPEN / STOP’ button and
unlatch and open the lid.
CAUTION: Unplug the centrifuge from the electrical outlet to
eliminate the possibility of electrical shock or other injury.
2. Remove the test tube holders.
3. Remove the nut in the center of the rotor by turning it
counterclockwise (a tool may be required).
4. The rotor is sitting on a cone-shaped adapter. Pull the rotor up
and off this adapter.
TO INSTALL THE ROTOR:
1. Place the rotor back onto the cone-shaped adapter. You may
need to turn the rotor slightly to line it up properly.
2. The rotor should slide onto the rotor cone freely.
3. Once a proper fit has been achieved, replace the nut and turn it
until it is hand-tight, (a tool may be required).
4. Replace the tube holders and verify that they are seated
properly.
5. It is recommended that the initial setup procedures be
performed to ensure that the rotor has been installed correctly
and that no damage has been done to the centrifuge during
either the rotor installation or possible rotor chamber cleaning.
See page 6 for this procedure.

Drucker Diagnostics [phone] - [email protected] Page | 8
CARE AND PREVENTATIVE MAINTENANCE
With proper care and maintenance your centrifuge will provide years of
laboratory service. For proper care, the following steps should be taken:
1. Provide Adequate Ventilation: For cooling purposes, the Model
642B draws in ambient air through the air intake cover on the
top of the lid and exhausts this air in the rear of the base. The
centrifuge should be placed on a hard smooth surface for good
air circulation.
2. Always Spin Balanced Loads: Make certain that you are always
spinning a balanced load. The Model 642B has a unique counter
balanced motor mounting design which, along with its rubber
suction feet, produces excellent vibration dampening. However,
out–of–balance loads may break glass test tubes and may
produce unsatisfactory separation results. Proper load balancing
will improve sample separation and extend the life of the
centrifuge. Refer to page 7 on balanced loads for additional
information on balancing the load.
3. Keep the Tube Holders Clean: NOTE: Always follow the safety
guidelines of your laboratory to properly clean up and/or dispose
of materials in the event that a substance known to be
potentially toxic, radioactive or contaminated with a pathogenic
microorganism is spilt in or on the centrifuge. Small glass
fragments left in the tube holder after a tube breakage may
adhere to the next test tube inserted in that holder. When this
tube is handled, these fragments may puncture protective gloves
and lacerate the operator’s fingers or hand. Remaining fragments
may provide stress points on subsequent tubes and result in
additional breakage. If a tube breakage occurs, carefully remove
the tube holder. Properly dispose of the sample and tube
fragments and thoroughly clean both the inside and outside of
the tube holder. Insert a new tube cushion (if necessary) and
replace the tube holder in the rotor.
4. Motor and Electrical Maintenance: The Model 642B uses a
brushless permanent split capacitor AC motor. It should not need
routine servicing for the life of the centrifuge. The electrical
components are selected for high reliability and should not need
routine service.
5. Tube Holder Replacement: It is recommended that the tube
holders be replaced after 24 months of use. Inspect tube holders
regularly for cracks. If cracks are discovered, replace
immediately.

Page | 9 Drucker Diagnostics [phone] - [e-mail]
6. Remove Accessories Before Moving: All tube holders, samples,
and caps must be removed from the rotor chamber before
transporting or storing the centrifuge to prevent damage and
injury.
CLEANING AND DISINFECTION
To prolong the life of the centrifuge cleaning and disinfection is
recommended every six months, or whenever there is a spillage or tube
breakage. Contaminants must be removed immediately, or corrosion and
premature degradation of components can occur.
1. Unplug the centrifuge before cleaning.
2. Apply cleaning solutions with a towel or cloth. Do not submerge
the centrifuge in water or other cleaning solutions as this will
cause damage and void the warranty.
3. ONLY isopropyl alcohol, soap and water, or a 10% (5500 PPM)
bleach solution should be used for cleaning and disinfection of
the centrifuge and accessories.
4. All surfaces must be dried immediately after cleaning and
disinfecting.
5. TBQ Germicidal products shall not be used, as they will cause
damage to the centrifuge and void the warranty.
6. The use of fully/partially halogenated hydrocarbons, ketones,
esters, ethers, benzyls, ethyl benzenes, and all other chemicals
not prescribed by the manufacturer shall not be used as they
may cause damage to the rotor chamber, rotor, tube holders,
accessories and centrifuge exterior and void the warranty.
7. It may be necessary to remove the rotor and clean the rotor
chamber. Follow the instructions on page 8 to remove and
reinstall the rotor.

Drucker Diagnostics [phone] - [email protected] Page | 10
TROUBLESHOOTING
Note: The latch must be turned completely clockwise to its stop position
in order for the centrifuge to operate.
The rotor does not spin
freely.
oMake sure nothing has fallen into
the rotor chamber.
oIf there is nothing obstructing the
rotor, the rotor may be damaged.
contact Drucker Diagnostics for
further assistance.
Excessive noise when
the machine is
running.
oCheck to see that the load is
balanced.
oMake sure that nothing has fallen
into the rotor chamber.
oMake sure that the nut in the
center of the rotor is tight.
oHave a technician test the motor
and replace it if necessary.
The centrifuge does
not run.
oCheck the electrical outlet.
oMake sure the lid latch is turned
completely clockwise to its stop
position.
oCheck the circuit breaker switch at
the bottom left of the machine. If
the switch is white, the breaker has
tripped. Contact Drucker
Diagnostics for further assistance.
oThe printed circuit board may be
damaged. Have a technician test
and replace the circuit board if
necessary.

Page | 11 Drucker Diagnostics [phone] - [e-mail]
The machine does not unlock
after a run has completed.
The lid should remain locked until
the rotor has nearly come to a
complete stop and then unlock
for 60 seconds. If additional
unlock time is needed, press the
’OPEN / STOP’ button with
the machine plugged in and the
rotor stopped. If the lid remains
locked after this and will not
unlock, the electronics may have
been damaged. Contact Drucker
Diagnostics for assistance. To
access the rotor chamber, follow
the procedure on next page,
“Emergency Rotor Chamber
Entry”.

Drucker Diagnostics [phone] - [email protected] Page | 12
EMERGENCY ROTOR CHAMBER ENTRY
In the event of power failure, it may be impossible to unlock the lid by
conventional means. In this case, entry into the rotor chamber may be
made by removing the latch label and using a
pen to manually disengage the locking
mechanism (see photo). Pull the mechanism
towards the control panel and then unlatch
and open the lid. If the unit is damaged,
contact your authorized dealer or Drucker
Diagnostics.
CALIBRATION TESTING
It is recommended that the top speed be tested every two years for
continued safe operation. Contact Drucker Diagnostics for further
information or testing availability.
SAFETY
The Model 642B complies with US, Canadian, and European Safety standards.
Lid Safety Switch: The Model 642B lid is secured to the top of the cabinet
by a latching knob and pawl system. When the knob is rotated clockwise,
the pawl grips the underside of the cabinet opening and prevents the lid
from opening. A mechanical stop positions the pawl and prevents it from
rotating completely. When rotated to the stop position, the pawl makes
contact with a micro–switch mounted underneath the cabinet top. The lid
safety switch prevents the centrifuge from operating while the lid is open.
Note: After the centrifuge has started spinning, it may be possible
to rotate the lid knob enough to cause the pawl to lose contact
with the lid safety switch. If this happens, the centrifuge motor
may lose power. If the knob is accidentally moved and this
situation should occur, rotate the knob fully clockwise to its stop
position and the centrifuge will resume operation.
Circuit Breaker: The Model 642B is protected with a 4 Amp circuit breaker
located at the rear of the machine mounted to the base. Any electrical
short circuit will cause the breaker to cut power to the machine.

Page | 13 Drucker Diagnostics [phone] - [e-mail]
REPLACEMENT PARTS
Part No.
Description
7724037K
Foot, rubber (Pack of 4)
02-006-1-0012
Lid Switch Assembly
7786061
Rotor, six-place horizontal
02-005-1-0006
Motor Assembly, 1/30 H.P., 115 V.A.C.
permanent split capacitor
7729009
Capacitor, 5uF, 250V A.C.
7751043
Circuit Breaker, 4A
7724071
Hinge, friction
7732018
Seal, lid gasket
02-002-1-0027
Lid assembly
03-0-0003-0076
Front Panel Label
AVAILABLE ACCESSORIES
0.5 to 1mL Tube
Adapter (Pack of 6)
p/n 7713068K
1.5 to 2mL Tube
Adapter (Pack of 6)
p/n 7713065K
SmartView™
Platform
p/n 00-079-009-001

Made in the USA by
FDA LISTED
INSTRUCTIONS FOR DISPOSAL OF WEEE BY USERS IN THE EUROPEAN UNION
This product must not be disposed of with other waste.
Instead, it is the user’s responsibility to dispose of their waste
equipment by handing it over to a designated collection
point for the recycling of waste electrical and electronic
equipment. The separate collection and recycling of your
waste equipment at the time of disposal will help to conserve
natural resources and ensure that it is recycled in a manner
that protects human health and the environment. For more
information about where you can drop off your waste
equipment for recycling, please contact your local city office,
waste disposal service, or where you purchased the product.
200 Shady Lane, Suite 170 • Philipsburg, PA 16866
[phone] (U.S. only) • [phone] • www.druckerdiagnostics.com
Protected by U.S. Patents #6,811,531, & #D718463 Other Patents Pending
RoHS
Compliant