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National 215-RLED Instructions Manual

Compound microscope
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Copyright © 5/28/2010
National Optical & Scientific Instrument Inc.
National Optical & Scientific Instruments Inc.
6508 Tri-County Parkway
Schertz, Texas 78154
Phone (210) 590-9010 Fax (210) 590-1104
INSTRUCTIONS FOR
MODEL 215-RLED
COMPOUND MICROSCOPE
1

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Summary of Contents for National 215-RLED

  • Page 1 National Optical & Scientific Instruments Inc. 6508 Tri-County Parkway Schertz, Texas 78154 Phone (210) 590-9010 Fax (210) 590-1104 INSTRUCTIONS FOR MODEL 215-RLED COMPOUND MICROSCOPE Copyright © 5/28/2010 National Optical & Scientific Instrument Inc.
  • Page 2 Knurled diopter ring Interpupillary scale Widefield 10x/18 Viewing head of microscope eyepieces Head locking screw Arm of microscope Objective turret (nosepiece) Rack stop adjustment screw Objective lenses Specimen holder (mechanical stage) Stage Tension adjustment collar (behind focus knob on left side) Abbe Condenser Coarse focus knob Iris diaphragm lever...
  • Page 3 Dust, dirt, or fingerprints can damage the delicate lens surfaces or adversely affect image quality. Model 215-RLED: Stand with head, two WF10x eyepieces, 4x, 10x, 40x and 100x objectives, condenser, recharger, specimen holder, dustcover, 2mm “L” hex wrench (for rack stop adjustment), 0.90mm “L” hex key wrench (Lamp Replacement).

  • Page 4: Operation

    ASSEMBLY 1. Eyepieces: Remove the dust caps from eyepiece tubes and insert eyepieces. Specimen holder: Rotate coarse focusing knob to move stage platform to its lowest position. Remove two knurled screws from mechanical stage platform. Place specimen holder on stage and using the two knurled locking screws, attach specimen holder to mechanical stage OPERATION 1.

  • Page 5: Maintenance

    8. Locate lever beneath stage that controls the iris diaphragm. Move lever until iris diaphragm is about half open. Normally, aperture of iris should become smaller for lower magnifications and larger for higher magnifications. Experiment with this setting until optimum resolution and contrast of specimen is obtained. 9.

  • Page 6: Mechanical Maintenance

    Before having costly servicing done, or before returning to National for “warranty repair”, make certain to examine the front lens element with a magnifying glass or eye loupe for the presence of such contaminants. If a microscope is returned to National for warranty repair, and it is determined that such contaminants are the problem, this is not covered under warranty and National will submit a cost estimate for cleaning.
  • Page 7 Your microscope includes 3 rechargeable AA nickel metal hydride batteries. These may be recharged up to 500 times, but if you observe that a recharge is providing significantly less than 40 hours of operation. It is probably time to replace to batteries. IMPORTANT WARNING: DO NOT USE REGULAR ALKALINE BATTERIES IN THIS MICROSCOPE.

  • Page 8: Troubleshooting

    TROUBLESHOOTING PROBLEM REASON FOR PROBLEM SOLUTION Light fails to operate. Batteries fully discharged. Recharge batteries. Rheostat control not turned far Turn rheostat to increase light enough. intensity. Light switch in ‘off’ position. Turn light switch on. LED “bulb” burned out. Replace LED “bulb”.

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