OHAUS Frontier FC5306 User manual

FrontierTM Centrifuge FC5306
SERVICE MANUAL
Ohaus Corporation 7 Campus Drive, Suite 310, Parsippany, NJ 07054 [phone]

FrontierTM Centrifuge FC5306
SERVICE MANUAL
The information contained in this manual is believed to be accurate at the time of publication, but Ohaus
Corporation assumes no liability arising from the use or misuse of this material. Reproduction of this
material is strictly prohibited.
Material in this manual is subject to change.
© Copyright 2014 Ohaus Corporation, all rights reserved.
® Registered trademark of Ohaus Corporation.

TABLE OF CONTENTS
FrontierTM Mini Centrifuge FC5306 Service Manual i Ohaus Corporation www.ohaus.com
CHAPTER 1 GETTING STARTED Page No.
1 Introduction..............................................................................................................1-1
1.1 Service Facilities......................................................................................................1-1
1.2 Tools and Test Equipment Required........................................................................1-2
1.2.1 Standard Tools and Test Equipment.................................................................1-2
1.2.2 Special Tools....................................................................................................1-2
1.3 Calibration Masses Required...................................................................................1-2
1.4 Service Strategy.......................................................................................................1-2
1.5 Specifications...........................................................................................................1-4
CHAPTER 2 DIAGNOSIS
2. Diagnosis.................................................................................................................2-1
2.1 FC5306 Setup and Examination...............................................................................2-1
2.2 Preliminary Checks..................................................................................................2-1
2.3 Troubleshooting Tables............................................................................................2-1
2.4 Testing The AC Adapter...........................................................................................2-2
CHAPTER 3 REPAIR PROCEDURE
3. Repair Procedures...................................................................................................3-1
3.1 Repair Major Components .......................................................................................3-1
3.1.1 Replacing Housing Assembly...................................................................................3-1
3.1.2 Replacing The Motor................................................................................................3-5
CHAPTER 4 FINAL TESTING & CALIBRATION
4.1. Part Lists..................................................................................................................4-1
LIST OF TABLES
TABLE NO. TITLE Page No.
1-1 Specifications ......................................................................................................1-3
2-1 Equipment Will Not Turn ON with AC Adapter.....................................................2-1
2-2 Equipment Motor Does Not Rotate......................................................................2-2
4-1 FC5306 Housing and Parts..................................................................................4-3
LIST OF ILLUSTRATIONS
FIGURE NO. TITLE Page No.
3-1 Releasing the Angle Rotor from Clamp................................................................3-1
3-2 Lifting the Rotor...................................................................................................3-1
3-3 Screws Holding the Bottom Housing with Top Housing .......................................3-2
3-4 Bottom Housing Removed...................................................................................3-2
3-5 Location of J5 and J6...........................................................................................3-2
3-6 Screws Holding the PCBA in Place......................................................................3-3
3-7 Removing the Plastic Holding..............................................................................3-3
3-8 Plastic Holding with Motor Attached.....................................................................3-4
3-9 Security Bracket inside the Housing ....................................................................3-4
3-10 Security Bracket outside the Housing ..................................................................3-5
3-11 Location of J5......................................................................................................3-5
3-12 Motor Attached....................................................................................................3-6
3-13 Motor Removed...................................................................................................3-6
4-1 FC5306 Housing and Parts Front and Back View................................................4-2
4-2 Motor Assembly FC5306 .....................................................................................4-2

CHAPTER 1 GETTING STARTED
FrontierTM Mini Centrifuge FC5306 Service Manual 1-1 Ohaus Corporation www.ohaus.com
1. INTRODUCTION
This service manual contains instructions for the diagnosis and repair work to be performed by
Ohaus Dealers or Ohaus authorized service centers. Knowledge of the operation of the
equipment is assumed. Instruction manuals may be required with this service manual. For
complete information on operation, refer to the Instruction Manual.
This manual covers maintenance on the following:
FrontierTM Mini Centrifuge FC5306
The contents of this manual are contained in two chapters.
Chapter 1 Introduction - Contains information about service facilities, tools, test equipment,
service strategy and equipment specifications.
Chapter 2 Diagnosis- Contains Preliminary checks, troubleshooting tables and replacing major
components.
Chapter 3 Replacing Major Components- Contains information for replacing major
components.
Chapter 4 Parts Lists - Contains overall views identifying all major serviceable replacement
components with associated parts lists.
1.1 SERVICE FACILITIES
To service the equipment, the service area should meet the following requirements:
Must have a stable power supply.
Be clean and free of excessive dust.

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 1-2 FrontierTM Mini Centrifuge FC5306 Service Manual
1.2 TOOLS AND EQUIPMENT
1.2.1 Standard Tools and Test Equipment
The service shop should contain the following equipment:
1. Digital Voltmeter (DVM).
2. Standard Electronics tool kit.
3. Razor blades.
1.3 SERVICE STRATEGY
The repair method for the FrontierTM Mini Centrifuge FC5306 available repair parts are listed in
Table 2-1.
The FrontierTM Mini Centrifuge FC5306 contains 2 major replaceable assemblies: Housing
Assembly and Motor.
1.4 SPECIFICATIONS
The technical data is valid under the following ambient conditions:
Operating temperature: 5°C to 40°C
Relative humidity: 20% to 85% relative humidity, non-condensing
Height above sea level: Up to 2000 m
Pollution degree: 2
Installation category: II
Main supply voltage fluctuations: up to ±10% of the nominal voltage

CHAPTER 1 GETTING STARTED
FrontierTM Mini Centrifuge FC5306 Service Manual 1-3 Ohaus Corporation www.ohaus.com
1.4 SPECIFICATIONS
TABLE 1-1. SPECIFICATIONS

CHAPTER 1 GETTING STARTED
Ohaus Corporation www.ohaus.com 1-4 FrontierTM Mini Centrifuge FC5306 Service Manual
1.5 COMPLIANCES.
Compliance to the following standards is indicated by the corresponding mark on the
product.
Marking
Standard
This product conforms to the EMC directive 2004/108/EC
and the Low Voltage Directive 2006/95/EC. The complete
Declaration of Conformity is available online at
http://europe.ohaus.com/europe/en/home/support/complia
nce/cedeclaration-of-conformity.aspx.
Disposal
In conformance with the European Directive 2002/96/EC on
Waste Electrical and Electronic Equipment (WEEE) this
device may not be disposed of in domestic waste. This also
applies to countries outside the EU, per their specific
requirements.
Please dispose of this product in accordance with local
regulations at the collecting point specified for electrical and
electronic equipment.
If you have any questions, please contact the responsible
authority or the distributor from which you purchased this
device.
Should this device be passed on to other parties (for private
or professional use), the content of this regulation must also
be related.
For disposal instructions in Europe, refer to
http://europe.ohaus.com/europe/en/home/support/weee.aspx.
Thank you for your contribution to environmental protection.

CHAPTER 1 GETTING STARTED
FrontierTM Mini Centrifuge FC5306 Service Manual 1-5 Ohaus Corporation www.ohaus.com
FCC Note
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Industry Canada Note
This Class B digital apparatus complies with Canadian ICES-001.

CHAPTER 2 DIAGNOSIS
FrontireTM Mini Centrifuge FC5306 Service Manual 2-1 Ohaus Corporation www.ohaus.com
2. DIAGNOSIS
This section contains information needed to properly evaluate the reported problem and
diagnose its cause.
2.1 FC5306 SETUP AND EXAMINATION
Set up the equipment according to the Instruction manual. And examine the equipment for any
physical damage.
2.2 PRELIMINARY CHECKS
Power up the equipment using the original AC adapter. In the case where the equipment will not
power up, check the AC adapter.
2.3 TROUBLESHOOTING TABLES
Troubleshooting tables 2-1 through 2-2 identify actual types of problems that could be
encountered with FC5306.
TABLE 2-1. EQUIPMENT WILL NOT TURN ON WITH AC ADAPTER
SYMPTOM
PROBABLE CAUSE
REMEDY
Unit will not turn on
with AC adapter
supplied
Adapter defective
Check the AC adapter voltage output
(Section 2.4). If voltage is low or
nonexistent, replace the AC adapter.
If OK, proceed.

CHAPTER 2 DIAGNOSIS
Ohaus Corporation www.ohaus.com 2-2 FrontireTM Mini Centrifuge FC5306 Service Manual
TABLE 2-2. Equipment motor does not rotate.
SYMPTOM
PROBABLE CAUSE
REMEDY
Motor does not
rotates
Centrifuge lid cover is not
closed
Defective AC Adapter
Defective motor
Close the lid cover.
Troubleshoot the AC Adapter.
Replace the motor.
2.4. TESTING THE AC ADAPTER
Before testing the Power Adapter, make sure the Power Adapter is original and rating agrees
with the power source being used. The Power Adapters are rated with a universal power input
and output of 24 V dc at 2.0A. Power Adapters can fail by having shorted internal windings
producing low voltage output or no output at all.
1. Plug the Power Adapter in a suitable power source and measure the open circuit voltage
on connector it should be approximately 24V in output.

CHAPTER 3 REPAIR PROCEDURE
FrontireTM Mini Centrifuge FC5306 Service Manual 3-1 Ohaus Corporation www.ohaus.com
3 REPAIR PROCEDURES
3.1 REPLACING MAJOR COMPONENTS.
This segment will explain replacing major components for FrontierTM Mini Centrifuge FC5306.
3.1.1 REPLACING HOUSING ASSEMBLY.
This segment will show the steps when replacing the FC5306 housing assembly.
1. Remove the AC Adapter from the mini centrifuge.
2. Remove the installed rotor from the shaft of the drive motor.
3. Hold the outside edge of the rotor, and push the protruding clamp towards its center with
two thumbs, and then lift the rotor upwards.
Figure 3.2 lifting the rotor.
Figure 3.1 Releasing the angle rotor from the clamp.

CHAPTER 3 REAPOR PROCEDURE
Ohaus Corporation www.ohaus.com 3-2 FrontireTM Mini Centrifuge FC5306 Service Manual
4. Flip the FC5306 over where you can gain access to the bottom housing of the mini
centrifuge.
5. Locate and remove the 4 screws which securing the bottom housing to the equipment
top housing.
6. Remove cable connection to Motor (J5) and to Switch (J6) from PCBA.
Figure 3.3 Screws holding the
bottom housing with top housing.
Figure 3.4 Bottom housing
removed.
Figure 3.5 Location of J5 and J6.

CHAPTER 3 REPAIR PROCEDURE
FrontireTM Mini Centrifuge FC5306 Service Manual 3-3 Ohaus Corporation www.ohaus.com
7. Remove the 3 screws holding the PCBA to Top housing and secure remove the PCBA
from the housing.
8. Remove the motor plastic holding (where motor is attached to) by gently pressing the
outer side of the motor plastic holding until the whole assembly is removing from the top
housing.
Figure 3.6 Screws holding the PCBA in position.
Figure 3.7 Removing the plastic holding.

CHAPTER 3 REAPOR PROCEDURE
Ohaus Corporation www.ohaus.com 3-4 FrontireTM Mini Centrifuge FC5306 Service Manual
9. Motor plastic holding with motor attached.
10. Remove the security bracket from the top housing (a plastic bracket and a spring) and
place it back to the new housing assembly.
Figure 3.8 Plastic holding with motor attached.
Figure 3.9 Security bracket inside the housing.

CHAPTER 3 REPAIR PROCEDURE
FrontireTM Mini Centrifuge FC5306 Service Manual 3-5 Ohaus Corporation www.ohaus.com
Note: When the mini centrifuge lid is closed this security bracket will have contact with
the main PCB and the motor/rotor will star to spin when the lid is release the contact will
break and the motor will stop spinning (for stopping the process and for safety reason).
Make sure you place back the security bracket accordingly when you change the new
housing.
3.1.2 REPLACING THE MOTOR.
1. Follow step 1 till 5 of replacing housing and just remove J5 which the motor cable is
connected to the main PCB. After that you can remove the motor from the red plastic
holding.
Figure 3.10 Security bracket
outside the housing.
Figure 3.11 Location of J5.

CHAPTER 3 REAPOR PROCEDURE
Ohaus Corporation www.ohaus.com 3-6 FrontireTM Mini Centrifuge FC5306 Service Manual
Figure 3.12 Motor attached.
Figure 3.13 Motor removed.

CHAPTER 4 PARTS LISTS & DIAGRAMS
FrontierTM Mini Centrifuge FC5305 Service Manual 4-1 Ohaus Corporation www.ohaus.com
4. PARTS LISTS
This section of the manual contains exploded views for the FC5306 Mini Centrifuge.
The exploded view drawings are designed to identify the parts which can be serviced
on the equipment in the field.
NOTE:
In all cases where a part is replaced, the scale must be thoroughly checked after
the replacement is made. The scale MUST meet the parameters of all applicable
specifications in this manual.
If further technical information is needed, please contact your local Ohaus office, or:
Ohaus Corporation, www.ohaus.com
7 Campus Drive
Suite 310
Parsippany, NJ 07054 USA
Tel: [phone]
Fax: [phone]
In the United States call toll free, 800-526-0659 between 8:00 a.m. and 6:00 p.m. EST.

CHAPTER 4 PARTS LISTS & DIAGRAMS
Ohaus Corporation www.ohaus.com 4-2 FrontierTM Mini Centrifuge FC5305 Service Manual
4.1 Drawings and Parts Lists
Figure 4-1. FrontierTM Mini Centrifuge FC5306: Housing and Parts front and back view.
Figure 4-2 Motor Assembly FC5306