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12100 POLARIZING MICROSCOPE SERIES 

UNITRON

® 

20

MAINTENANCE 

Please remember to 

never

 

leave the microscope with eyepieces removed and always protect the 

microscope with the dust cover when not in use. 

SERVICE 

UNITRON

®

 microscopes are precision instruments which require periodic servicing to keep them 

performing properly and to compensate for normal wear. A regular schedule of preventative maintenance 
by qualified service personnel is highly recommended. Your authorized UNITRON

®

 distributor can 

arrange for this service. Should unexpected problems be experienced with your instrument, proceed as 
follows: 

1. Contact the UNITRON

®

 distributor from whom you purchased the microscope. Some

problems can be resolved simply over the telephone.

2. If it is determined that the microscope should be returned to your UNITRON

®

 distributor or to

UNITRON

®

 for warranty repair, pack the instrument in its original Styrofoam shipping carton. If you no

longer have this carton, pack the microscope in a crush-resistant carton with a minimum of three inches
of a shock absorbing material surrounding it to prevent in-transit damage. The microscope should be
wrapped in a plastic bag to prevent Styrofoam dust from damaging the microscope. Always ship the
microscope in an upright position; 

NEVER SHIP A MICROSCOPE ON ITS SIDE

. The microscope or

component should be shipped prepaid and insured.

LIMITED MICROSCOPE WARRANTY 

This microscope is warranted to be free from defects in material and workmanship for a period of five (5) years for 
mechanical  and  optical  components  and  one  (1)  year  for  electrical  components  from  the  date  of  invoice  to  the 
original (end user) purchaser.  This warranty does not cover damage caused in-transit, misuse, neglect, abuse or 
damage  resulting  from  improper  servicing  or  modification  by  other  then  UNITRON

®

  approved  service  personnel.

This warranty does not cover any routine maintenance work or any other work, which is reasonably expected to be 
performed  by  the  purchaser.  Normal  wear  is  excluded  from  this  warranty.  No  responsibility  is  assumed  for 
unsatisfactory operating performance due to environmental conditions such as humidity, dust, corrosive chemicals, 
deposition  of  oil  or  other  foreign  matter,  spillage  or  other  conditions  beyond  the  control  of  UNITRON  Ltd.    This 
warranty expressly excludes any liability by UNITRON Ltd. for consequential loss or damage on any grounds, such 
as  (but  not  limited  to)  the  non-availability  to  the  End  User  of  the  product(s)  under  warranty  or  the  need  to  repair 
work  processes.    Should  any  defect  in  material,  workmanship  or  electronic  component  occur  under  this  warranty 
contact  your  UNITRON

®

  distributor  or  UNITRON

® 

at  (631)  543-2000.    This  warranty  is  limited  to  the  continental

United States of America.  All items returned for warranty repair must be sent freight prepaid and insured to Unitron 
Ltd.,  73  Mall  Drive,  Commack,  NY  11725 

–  USA.    All  warranty  repairs  will  be  returned  freight  prepaid  to  any 

destination  within the continental United States of America. For all foreign warranty repairs, return freight charges 
are the responsibility of the individual/company who returned the merchandise for repair.   

Summary of Contents for 12100 Series

Page 1: ...12100 Polarizing MICROSCOPE SERIES MANUAL 100 Lauman Lane Suite A Hicksville NY 11801 Tel 877 877 7274 Fax 516 801 2046 Email Info nyscopes com www microscopeinternational com LVWULEXWHG E ...

Page 2: ... MOUNTING THE VIEWING HEAD 9 MOUNTING THE CONDENSER 9 EYEPIECE INSTALLATION 9 COMPONENT SPECIFICATIONS 10 12 ADJUSTMENT AND OPERATION ADJUSTING INTERPUPILLARY DISTANCE 13 FOCUSING 13 ADJUSTING FOCUSING TENSION 14 ADJUSTING THE CONDENSER APERTURE DIAPHRAGM 14 CENTRATION 15 REPLACING THE FUSE 16 SPECIFICATIONS 16 TROUBLESHOOTING 19 MAINTENANCE 20 SERVICE 20 WARRANTY 20 ...

Page 3: ...let A grounded 3 wire cord is provided CARE AND MAINTENANCE 1 Do not attempt to disassemble any component including eyepieces objectives or the focusing assembly 2 Keep the instrument clean remove dirt and debris regularly Accumulated dirt on metal surfaces should be cleaned with a damp cloth More persistent dirt should be removed using a mild soap solution Do not use organic solvents for cleaning...

Page 4: ...roscope arrived packed in a molded shipping carton Do not discard the carton the shipping carton should be retained for reshipment of your microscope if needed Avoid placing the microscope in dusty surroundings or in high temperature or humid areas as mold and mildew can form The components of the 12100 Polarizing Microscope are shipped double boxed inside the inner cartons the microscope and its ...

Page 5: ...r The clamp is accessible by removing the Illuminator Housing at the base of the mainframe To remove the clamp Grip the finger grooves on the sides of the housing and slide the housing off the microscope frame Use the hex key tool provided to remove the three screws securing the gold toned clamp NOTE Retain this clamp and screws for reuse in the event the microscope is reshipped Replace the Illumi...

Page 6: ... 1 Binocular Head Objective Nosepiece Rotating Stage On Off Switch Lamp Intensity Control Knob Microscope Frame Fine Focusing Knob Nosepiece Standard Eyepiece Reticle Eyepiece Bertrand Lens Turret Bertrand Lens Centering Screw Analyzer Condenser Illuminator Housing ...

Page 7: ...sion Adjustment Collar Coarse Focusing Knob Condenser Adjustment Knob Condenser Centering Screws Analyzer Rotator Wheel Analyzer Rotator Lock Screw Intermediate Tube Lock Screw Intermediate Tube Objective Centering Screw Stage Vernier With Lock Screw Condenser Swing out Top Lens Condenser ...

Page 8: ...mounting flange This pin must engage the corresponding slot on the top flange of the Bertrand Analyzer assembly Secure the viewing head by tightening the hex type set screw on the right side of the Bertrand Analyzer assembly Mounting The Condenser The condenser incorporates a registration pin on its mounting flange This pin engages a corresponding groove in the condenser mounting bracket Bertrand ...

Page 9: ...ed RIGHT Turn the top of the Measuring eyepiece with reticle clockwise until it stops and is in its lowest position Before inserting the eyepiece look through the eyepiece to determine the correct orientation of the scale i e it should be horizontal and readable Insert the eyepiece into the right eyepiece tube by aligning the notches on the eyepiece slightly to the left of the tabs on the eyepiece...

Page 10: ... 0 17 light blue 60x optional 0 8 0 17 0 3 light blue Component Description Viewing Head Seidentopf binocular or Trinocular depending on model ordered Eyepieces WF10x 20mm field of view with 5 to 5 diopter adjustment Two eyepieces are supplied 10x Standard eyepiece no reticle 10x Measuring eyepiece with 0 1mm division horizontal scale and vertical crosshair Also supplied Plain 20mm field stop eyep...

Page 11: ...late is placed in the optic path Pulling the slider fully out introduces a 1 4λ retarder This plate is used to amplify very weak birefringence and the determination of x and y of the specimen 2 The Quartz Wedge Compensation Plate is installed in the DIN accessory slot to enable an approximation of the retardation in the range of 1 6 Lambda Rotatable stage The stage diameter is 160mm It incorporate...

Page 12: ...bracket It has a 360 scale When set to 0 zero degrees the orientation of polarization is East to West There are detents at 0 90 180 and 270 degrees A lock screw permits it to be secured in any orientation Illuminator Housing The slide out illuminator housing is easily removable for access to the LED bulb and the shipping clamp installed prior to shipping the microscope to protect the focus mechani...

Page 13: ...se operator fatigue and will disrupt the objective parfocality Focusing To ensure that you obtain sharp images with both eyes since eyes vary especially for those wearing glasses any eyesight variation can be corrected in the following manner Select the 10x objective Place a specimen on the stage and secure it with the stage clips Set both eyepiece diopter collars to 0 The right eyepiece contains ...

Page 14: ...r counter clockwise to reduce tension according to individual preference Adjusting the Condenser Aperture Diaphragm The condenser contains an iris type variable diaphragm usually referred to as the microscope s Aperture Diaphragm The diameter of the aperture opening is controlled by moving the control lever that projects from the front of the condenser housing The scale facilitates the setting of ...

Page 15: ... may be necessary to repeat steps 7 and 8 several times The factory specification for centration is approximately 2 div of the Measuring eyepiece horizontal scale 10 Remove the two stage centering tools when satisfied with the centration 11 Tighten the stage rotation clamp thumbscrew The stage now rotates on the optic axis of the 10x objective Do not move the specimen OBJECTIVES NOTE The following...

Page 16: ...l flat head screwdriver and insert it into the notch on the bottom of the plug receptacle on the back of the microscope and pull it toward you to slide the fuse holder out Press the tab on the bottom of the fuse holder to release the fuse Insert a new fuse into the holder and slide the fuse holder back into the bottom of the plug receptacle making sure it is firmly in place ...

Page 17: ...iew field Dirt on the specimen Clean specimen Dirt on the surfaces of eyepieces Clean eyepieces Image is not clear Dirt on the surface of objectives Clean objectives Image is not clear while focusing change Diopter adjustment is not correct Readjust diopter Focusing is not correct Readjust it The focusing knob does not turn smoothly The focusing knob is too tight Loosen it to a suitable position D...

Page 18: ...es while focusing Revolving nosepiece is not in the click stop position Revolve the nosepiece to the click stop position Image tinged yellow Lamp intensity is too low Blue filter not used Adjust the light intensity by rotating the intensity control dial and or iris diaphragm Use daylight blue filter Image is too bright Lamp intensity is too high Adjust the light intensity by rotating the intensity...

Page 19: ... Cover glass is to thick Diopter adjustment is not set properly Turn the slide over so the cover glass faces up Use a 0 17mm cover glass Readjust the diopter settings as outlined in section 4 3 Lamp does not light when switched on No electrical power Lamp bulb burnt out Fuse blown out Check power cord connection Replace bulb Replace fuse Slippage of focus when using the coarse focusing knob Tensio...

Page 20: ... workmanship for a period of five 5 years for mechanical and optical components and one 1 year for electrical components from the date of invoice to the original end user purchaser This warranty does not cover damage caused in transit misuse neglect abuse or damage resulting from improper servicing or modification by other then UNITRON approved service personnel This warranty does not cover any ro...

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