NEWS

1. Requirement of Installation

（1） The compressor should be installed in the ventilation ,dry area with less dust.

（2）When install the compressor ,keep certain room around it so as to assemble and disassemble and maintain.

（3）The basement screw of compressor should be load and reliable, in case of causing pipe leakage of parts loosen by over vibration.

（4）Each of the first-installed pipe should blow cleanly, avoiding other things entering the system.                        

2. Check before in rotation

（1）Check if the each pulley belt is properly slackened.

（2）Check if the filtered lubricating oil in the crankcase is reached between the two scales.

（3）Check if the compressor is all right by rotating the pulley.

3. Check when in rotation

（1）Before regular starting ,the electric switch is switched on and off to see if the turn direction of pulley is right or not.

（2）Pay attention to the cooling water supply of the water-cooling air compressor. The supply water pressure is 0.15MPa, Water yield is about 0.5 t/h .

（3）Open the first stage safety valve, let the compressor run without load for about half an hour, close the valve ,then increase pressure step by step.

（4）During the rotation, should not have oil leakage, water leakage or gas leakage

（5）Check each stage safety valve, pneumatic control device or electric control device to see they are in the normal work state.

4. Check after sotpping

（1）Stop the air compressor without loading as soon as possible.

（2）Cut off electricity.

（3）If  the compressor is water-cooling ,should cut off  water resource, drain off  the cooled water in the cooler.

（4）Open the valve under gas bottle to drain off water after operation every 16 hours .

5.  Requirement of maintenance

（1）Clean the inner of muffler ,dirt and greasy dirt regularly.

（2）Replace lubricating oil regularly, clean the greasy dirt in the crankshaft box.

（3）Check the wear allowance of each motion parts regularly.

（4）Check the function of safety valve ,pneumatic control device or electric control device regularly.

（5） It is necessary to remove the excessive carbon deposits on the gas valve ,clean it in the 20% caustic soda solution at 70℃~80℃，the wash it in warm water .

（6）Check the gas bottle according to the provision of regulation of safety an Technology of Pressure Vessel.

6. Common Breakdown Removal Method

Item	Character of breakdown	Possible cause	Removal method
1	The compressor can’t start	1.The electricity is breakdown or the voltage is to low 2.Not start without loading	1.Overhaul to removal breakdown 2.Check pressure control device and one-way valve to removal breakdown
2	Unusual sound in the crankcase and cylinder	1.The screw and nut of he connecting rod become loosen 2.The top end of piston beats the cylinder spacer 3. The valve disks are broken, the broken fall into the cylinder. 4. The piston pin hole is much worn. 5. The connecting rod bearing is much worn	1. Screw tightly the connecting rod screw. 2. Repair and maintain spacer 3. Repair the valve disk or the other damaged parts and remove the broken pieces 4. Check and replace the piston 5. Adjust the spacer or replace the connecting rod .
3	Insufficient air discharge	1.The running speed is reduced 2. The spring of the inlet valve is broken or the valve disks are seized. 3.The filter is clogged 4.The piston ring is worn by friction or seized by the ring groove 5. The connecting of the inlet valve seat and chamber is not sealed well 6.The air feed system is leakage	1. Ensure a normal running speed 2. Replace the spring ,repair and maintain the valve. 3. Replace or clean the filter. 4. Replace the piston ring and clean the ring groove. 5. Clean the valve system 6.Check and removal the breakdown
4	The discharge air temperature suddenly rises	1. The valve disk or the spring is broken 2. Carbon deposits heavily on the discharge valve 3.The cool effect is nit effective	1.Repair and maintain or replace 2.Clean and remove it 3.Clean cooler
5	The temperature of the lubricating oil is too high .the supply oil increases	1. The piston and cylinder are seized 2. The piston ring and piston are seriously worn 3. The oil in crankshaft case is too much	1.Replace or repair and maintain 2.Check and replace the piston ring or piston 3. Check oil position
6	Increase of power consumption	1. The piston ring and cylinder are seized 2. The connecting rod bearing bushing holds the crankshaft 3. The air passage of the inlet and discharge valve is not free	1. Replace or repair and maintain     2. Replace or repair an maintain 3. Check and clean it