Iran City bus air conditioner isimportant for a well-developed bus network that makes traveling between cities easy and affordable.
Whether you're visiting historical sites, exploring different regions, or traveling on a budget, buses are a practical option. They are widely available, comfortable, and much cheaper than flights.
Drivers can perform daily inspections and diagnostics through visual inspection, auditory inspection, and physical inspection.
Visual inspection focuses on the pressure, temperature, and ammeter readings. Observe the compressor's lubricating oil level, refrigerant flow, and low-pressure pipe frost and oil leakage.
Listen for any noise or banging from operating equipment, as well as the sound of refrigerant flowing through the expansion valve. Any abnormal sound requires system shutdown and investigation.
Feel for temperature fluctuations in the system pipes, equipment heat, and compressor vibration.
Feel the condenser for a noticeable temperature difference between the inlet and outlet pipes. This difference is unlikely to indicate a blockage or low refrigerant level. The condenser should be cleaned or refrigerant added. Abnormal temperature differences between the inlet and outlet pipes, or inconsistent temperature differences before and after the filter drier, indicate a problem. Frost or condensation should form evenly on the expansion valve body, with no thick frost at the liquid inlet. There should be a slight creaking sound and a temperature difference between the front and rear of the refrigerant flowing through the expansion valve. The area between the compressor discharge valve and the expansion valve should be hot to the touch, while the area between the expansion valve outlet and the compressor suction valve should be cold. The glass inspection window should be free of bubbles, and the air in the vehicle's air vents should feel cool. The refrigeration system should be free of oil and refrigerant leaks, and there should be no abnormal noises during operation.
The condenser and evaporator are prone to bending and cracking. Flatten them with wood and weld the cracked areas. Bus air conditioner is important for a well-developed bus network that makes traveling between cities easy and affordable.
If the heat dissipation duct is cracked, remove some of the heat sink and weld it. Aluminum alloy condensers may leak slightly after welding, which can be sealed with adhesive. If the expansion valve is clogged with dirt, blow it clear with high-pressure air. If this doesn't work, disassemble and clean it. If the dynamic membrane loses pressure or the thermal sensor leaks refrigerant, repair it and refill it with refrigerant. Cracked metal pipes in pipes and joints can be repaired by welding. Damaged rubber hoses can be removed or replaced as appropriate. Damaged connections between the hose and metal joints can be repaired accordingly. Flare-type joints with insufficient surface finish can be hand-polished.
When repairing the compressor, flush the system with refrigerant and clean the air inlet filter. Lubricate seals and other components with refrigerant oil before assembly. After installation, turn the drive plate to remove any lubricant from the cylinder head.
Bus Terminals in Iran
Bus terminals are usually located on the outskirts of major cities, but they are easily accessible by taxi, metro, or public transportation. Iranian bus companies have their own ticket booths inside terminals, where you can buy tickets or wait for your departure. Most terminals also have facilities such as supermarkets, souvenir shops, restrooms, and even accommodation options.
For safety and fair pricing, it is best to use official taxis from the terminal. These taxis have regulated fares and are safer than random private cars.
Iranian city bus air conditioner operates in harsh environments and are prone to malfunctions. For example, if the air conditioner doesn't cool when the engine is idling, it may be because the engine is not running at high idle or the compressor pulley is not rotating. Check the electronically controlled high idle control, pulley, and drive belt. If the air conditioner compressor is operating normally but cooling performance is poor, it could be due to damage to the compressor valve plate or refrigerant leakage. The specific cause should be disassembled, inspected, and repaired. If the compressor pulley is not operating properly, it could be due to a faulty relay or other problem. This should be checked and replaced. Excessive compressor noise could indicate a loose or faulty mounting bracket or other component. Check and tighten or replace components.
Under certain conditions, a multimeter can be used to detect system faults and determine the problem based on the pressure readings. If moisture in the system causes intermittent cooling, replace the dryer or vacuum the system to remove the moisture and refill with fresh refrigerant. Poor cooling performance and low pressure could indicate a gas leak or insufficient refrigerant. Check for leaks and refill refrigerant. Poor refrigerant circulation and low pressure could indicate contamination in the receiver. The receiver should be replaced. No cooling and low pressure could indicate moisture or dirt obstructing the refrigerant flow. This should be checked, cleaned, or replaced. Insufficient cooling and high pressure could indicate an oversupply of refrigerant or insufficient cooling in the condenser. Clean the condenser and check the refrigerant level. Poor cooling performance and high pressure could indicate air ingress or a faulty expansion valve. Check the compressor oil and address the problem. If the system does not cool and the pressure on the low-pressure side is high and the pressure on the high-pressure side is low, there may be an internal leak in the compressor, which needs to be repaired or replaced.
