Maintenance of biological microscopes and troubleshooting of common faults
The biological microscope is a precision optical instrument commonly used in biological teaching experiments. It consists of a mechanical system and an optical system.
The mechanical system includes: the transmission part of the lens barrel, the rotating part of the objective lens, the stage, the conversion part of the film pressing clamp and the shutter, the rotating part of the frame and the base, etc.
The optical system includes: eyepieces, objective lenses, condensers, reflectors, etc.
1. Maintenance and maintenance
(1) Overall maintenance: Biological microscopes should be placed in a dry, cool, dust-free, and corrosion-free place. After use, wipe it clean immediately, cover it with a dust-proof breathable cover or put it in a box.
(2) Maintenance of mechanical system: After use, wipe it with a clean fine cloth and apply some neutral grease to the sliding parts regularly. If there is serious pollution, wash it with gasoline and then dry it. However, do not use alcohol or ether to clean, as these reagents will corrode machinery and paint, causing damage.
(3) Maintenance of the optical system: After use, gently wipe the eyepiece and objective lenses with a clean and soft silk cloth. If there are stains that cannot be wiped off, use long-fiber absorbent cotton or clean fine cotton cloth dipped in a little xylene or lens cleaning fluid (3 parts alcohol: 1 part ether) to wipe. Then wipe dry with a clean soft silk cloth or blow dry with a hair dryer. It should be noted that the cleaning fluid must not penetrate into the objective lens, otherwise it will damage the objective lens. Just wipe the condenser lens (only available on XSP-13A and 16A models) and reflector after use.
2. Troubleshooting of common faults
(1) The lens barrel slides down on its own: This is one of the common failures of biological microscopes. The solution to the microscope with sleeve-type structure can be carried out in two steps.
2. Difficulty in rotating the objective lens converter or failure in positioning: Difficulty in rotating the objective lens converter may be due to the fixing screw being too tight. Makes turning difficult and can damage parts. If it is too loose, the bearing marbles inside will fall off the track and squeeze together, making rotation difficult; in addition, the marbles are likely to run outside. The diameter of the marbles is only one millimeter and is easily lost. The tightness of the fixing screw shall be based on the degree of ease when the converter rotates and there is no loosening gap in the vertical direction. After adjusting the fixing screws, tighten the locking screws immediately. Otherwise, problems will occur again after the converter is rotated.
3. Shutter positioning failure: This may be caused by the shutter fixing screw being too loose and the positioning marble escaping from the positioning hole. Just put the marble back into the positioning hole and tighten the set screw. If it is difficult to rotate the shutter after tightening, a washer needs to be added between the shutter and the stage. After tightening the screw with the thickness of the washer, the shutter can rotate easily and the positioning marble will not escape. It is better if the shutter is positioned correctly.
