One of the most common problems in the routine use of a car air conditioning system is that a compressor suction cannot be properly adsorbed. This not only affects refrigeration effects, but may also cause further damage to the entire air conditioning system. In response to the question “air-conditioning compressors do not smoke”, this paper will be summarized in terms of reasons analysis, inspection steps and maintenance methods, and presented in visual form in tables。
I. Analysis of the causes of the problem
Serial number
Type of cause
Specific performance
Aging or damaged suction
The suction is not flexible enough to fit the surface of the compressor
Vacuity inadequate
Refrigerant leaks or vacuum pumps work abnormally, resulting in no effective negative pressure on the suction
Inappropriate installation
The suction was not properly installed, or installed in the wrong location, resulting in a lack of sealing
Compressor surface is uneven
The compressor's shell is rusty, deformed or dirty, affecting the suction
Control system failure
The air conditioner control module or pressure switch failed, resulting in a failure of the compressor to function properly
Ii. Inspection and diagnostic steps
Steps
Check contents
Operational description
Watch the vacuum state
Check if the vacuum is broken, ageing or deformed
Test vacuum
Use of vacuum pumps to test system vacuum compliance (usually -0. 8 bar)
Check the compressor surface
Cleaning of compressor casings to check for rust, oil pollution or deformation
Checking refrigerant pressure
Use pressure gauges to detect normal pressure on the side
Check the control system signal
Read the failure code of the air conditioner control module and determine whether there is a circuit or sensor problem
Iii. Maintenance methodology
Reason for the problem
Maintenance methods
Aging or damaged suction
Replace the new suction, ensure model matching, clean the surface of the pre-installation compressor
Vacuity inadequate
Rehabilitating refrigerant leaks, revacuating vacuums and injecting appropriate refrigerants
Inappropriate installation
Re-install the suction to make sure the position is accurate and the screws are strong. Medium
Compressor surface is uneven
Cleans the surface of the compressor and, if necessary, grinding or replacing the compressor
Control system failure
Check and repair associated circuits and replace control modules or pressure switches as necessary
Iv. Notes
- before any maintenance is carried out, the power supply of the vehicle must be cut to avoid the risk of exposure。
- when replacing a suction, select the original plant or fittings of reliable quality to ensure sealing。
- in case of difficulties in self-maintenance, it is recommended to contact professional maintenance staff so as not to cause greater losses。
The above analysis and maintenance methods will effectively address the problem of “no sucking in car ac compressors”. Regular maintenance and inspection are key to preventing such malfunctions, helping to extend the useful life of air-conditioning systems and enhance driving comfort。
