The NMRV reducer must be installed on a flat, sturdy base; the mounting bolts must be securely tightened to ensure vibration resistance. Following installation, the connecting shaft extensions of the prime mover, the reducer, and the driven machine must be precisely aligned with one another. The outer diameters of the input and output shaft extensions are manufactured to an h6 tolerance; consequently, the inner bores of matching transmission components-such as couplings, pulleys, and sprockets-must be sized to appropriate tolerances to prevent bearing damage caused by an overly tight fit, or compromised power transmission resulting from an overly loose fit. When mounting transmission components-such as sprockets or gears-onto the shaft extensions, they should be positioned as close as possible to the bearings to minimize bending stress on the shaft. When installing the motor, a thin layer of grease should be applied to the inner bore wall and keyway of the worm shaft head to facilitate assembly and prevent the shaft-bore interface from seizing or rusting over time. When utilizing direct-drive reducer configurations with various types of motors, if the motor is particularly heavy, an auxiliary support mechanism should be installed.

1. If the operating environment temperature for the NMRV reducer falls below -30°C or exceeds +60°C, the standard oil seals must be replaced with seals made of specialized materials suitable for extreme temperatures.

2. The motor paired with the NMRV reducer must be rated for operation in low-temperature environments, and its power output must be sufficient to meet the torque requirements for starting under cold conditions.

3. Prior to initial operation, the viscosity of the lubricant may be relatively high; therefore, the unit should undergo a no-load test run before any load is applied to prevent potential equipment malfunction.

4. For the initial use of the NMRV reducer, the lubricant should be changed after approximately 300 to 500 hours of continuous operation (the "break-in" period). Subsequently, the recommended oil change interval is every 6 months or 6,000 hours (whichever occurs first). In harsh operating environments, the oil change interval should be shortened accordingly. It is recommended to use ISO VG220–320 gear oil; furthermore, lubricants from different brands or of different grades should never be mixed.

5. Periodically inspect the quantity and quality of the lubricant. Ensure that an adequate supply of lubricant is maintained, and promptly replace any oil that has become contaminated with impurities or has degraded. The oil level should be kept between the 1/2 and 2/3 marks on the oil sight glass or dipstick; an excessive oil level may lead to oil leakage, while an insufficient level will accelerate component wear. The service factor for an NMRV reducer depends on the actual operating environment. When selecting an appropriate service factor, one must take into account various factors, such as the nature of the output load, the daily operating duration, and the frequency of starts.

Prior to operation, inspect the fastening bolts to ensure they are secure and verify that the protective covers are intact. During operation, monitor for abnormal noises (normal operation produces a uniform sound; sharp or percussive noises require immediate shutdown for inspection), temperature (the temperature rise of the housing should not exceed 45°C above ambient temperature), and vibration. After shutting down, clean any dust or oil residue from the surface of the reducer.

If the reducer is to remain idle for an extended period (exceeding 3 months), thoroughly drain the old oil and flush the internal cavity using kerosene or a specialized cleaning agent; apply anti-rust grease to the input shaft; and store the unit in a dry environment (relative humidity ≤ 60%), avoiding direct sunlight.

Non-professional personnel must not attempt to disassemble the unit without authorization, as this may compromise the precision of the gear meshing. Overloading the unit must be avoided; ensure that the operating load remains within the rated capacity.