The mechanical parts of the instrument must be moisture-proof, rust-proof, dust-proof, shock-proof, and calibrated, and the specified type of grease must be injected. The original components, power supplies, sensors, converters and displays of the electrical parts should be insulated, rat-proof, and temperature controlled to reduce damage to the electrical parts due to oxidation, aging, leakage, short circuit, and open circuit.

All kinds of glassware and optical instruments should be handled and handled with care to prevent sudden cold, sudden heat, hits, collisions, dust and mildew. In particular, the mirror and polished surfaces of optical parts cannot be taken directly by hand. Wear fine gauze gloves or pad with soft silk cloth. When wiping, you can only use fine silk cloth.

The knives, scales and indicators on various measuring instruments should be prevented from being damaged and kept clean, and the measuring department should be calibrated regularly.

For the mechanical system due to wear, corrosion, dust, oil, fracture, damage, falling into foreign objects, looseness or improper operation, the relevant moving parts appear "crash", slip, vibrate, run out of synchronization, screw screws cannot be adjusted, and sound temperature Abnormalities can be checked by watching, listening, testing and touching.

For electrical failure, the indicator does not light, the display does not display, or the data display is abnormal, you can check whether the switch, fuse, filament, or electrical device is leaking or has poor contact, and you can measure resistance, voltage, current, and injection. Signal, replace the original device in question to troubleshoot.

If the pointer is deformed, the scale is worn out, the paint is peeled off, is blurred, the electrical signal of the display is interrupted or the electrical parameters are abnormal, the normal display and accurate reading should be replaced.

Instrument disassembly

The condition of the instrument is judged through analysis. If there is a fault, it can be disassembled, and the mutual assembly relationship of various parts must be carefully observed before doing it. Assembling accuracy and disassembly procedures, it is best to record the disassembly of complex parts to prevent errors during restoration. Do not forcibly disassemble parts that are not easy to disassemble. Rubber, plastic or wooden hammers should be used, and lightly tap to loosen them before disassembly. Parts of different materials such as metal, rubber, glass, and magnetics should be stored separately, and at the same time, they should be prevented from being lost, especially when they are magnetized, which will affect their use. Do not disassemble parts that do not have to be dismantled easily. It is best to ask professional machinery to repair the fault that is not sure to be solved.

Assembly after overhaul

Rebuild the assembly after replacement and repair of damaged, incomplete, deformed, deteriorated, rusted, worn, fractured, loose, and leaked parts. The original procedure should be reset, and the front and back sides and the up and down directions cannot be reversed. Assembly The accuracy must be within the tolerance range. If it is required to be in a horizontal state (zero position), it cannot be omitted. If the lubricating oil is used, pay attention to the type of lubricating oil used and the order of oil filling do not reverse.

After the instrument is repaired, installed, and debugged, it must be tested without load and on-load. For those that directly affect the measurement readings, please mark: Verification by the measurement department to ensure that the data detected by the instrument are consistent with the performance parameters It is required to appraise the operating conditions and make records and archives.