Solve the salt spray test chamber chamber cover can not be opened normally

when clicking on the salt spray test chamber cylinder rise button, encountered the chamber cover can not be opened normally, can be in accordance with the following troubleshooting ideas and solutions to carry out troubleshooting step by step, to ensure that the test chamber to return to normal operation.

I. Check the salt spray test chamber intake air pressure meter

Intake air pressure gauge is like the control chamber cover switch “electric switch”, insufficient air pressure, the chamber cover can not be opened normally. We first find the back of the salt spray test chamber into the air pressure table, check the dial value is 0.5 - 0.6MPa within the normal range. If the air pressure is lower than the standard value, the cause of the failure is usually air compressor failure, airway blockage or improper adjustment of the pressure reducing valve.

(A salt spray test chamber inlet air pressure gauge pressure close to 0.6MPa, indicating normal)

Troubleshooting and solutions:

Check the salt spray test chamber air compressor: see if the compressor is running normally. If it does not start, you need to check the power supply and compressor control switch; if it is running but the air pressure is not enough, it may be the wear and tear of the internal parts of the salt spray test chamber, it is recommended to contact a professional for maintenance.

Check the salt spray test chamber gas pipeline: check whether the pipeline is bent, broken or blocked. If the pipe is bent, straighten it; if broken, replace it in time; if it is blocked, use compressed air to reverse blowing salt spray test chamber air piping to dredge.

Adjust the salt spray test chamber pressure reducing valve: if the test chamber air pressure table value is too low, slowly rotate the adjustment knob, the air pressure to the normal range, adjusted to closely observe the value of the change, to prevent damage to the equipment too high air pressure.

II. Check the salt spray test chamber side cylinder

If the test chamber intake air pressure meter shows normal, click the cylinder up button; if you click the salt spray test chamber cylinder up button, the lid still can not be opened, you should check the side cylinder sealing.

Specific operations are as follows:

Find the salt spray test chamber side cylinder, pull out one side of the gas pipe, in the other side of the normal air intake, observe the upper side of the cylinder, under normal circumstances there should be no gas leakage. If you find that there is gas outflow, it means that the cylinder seal failure, need to be replaced in time.

Salt spray test chamber cylinder replacement steps:

Cut off the gas source: first turn off the salt spray test chamber gas main switch, the gas pressure valve valve up, counterclockwise rotation to fully open, such as the pressure gauge shows the inlet air pressure is 0, to ensure safe operation.

Remove the old cylinder: First remove the two fixing screws at the top of the cylinder of the salt spray test chamber, then remove the four fixing screws at the base of the lower end, unplug the upper and lower air tubes, and then push the cylinder back to take it out.

Separate Parts: After removing the cylinder, remove the 4 screws on the base and use an adjustable wrench or socket wrench to loosen the nuts and separate the connecting rod from the cylinder. If the nut is rusted and cannot be removed, replace the salt spray test chamber connecting rod and cylinder together.

Installation of new cylinder: After replacing the new cylinder, install back the base and fish-eye connector in order. Before installing back the equipment, put two support pads at the bottom of the salt spray test chamber door to facilitate the fixing of screws. Then put the cylinder diagonally into the chamber, so that the fisheye connector from the top hole out, determine the position, and then fixed with screws. Salt spray test chamber on both sides of the cylinder replacement method is the same.

Test acceptance: After the completion of the replacement of the gas supply, test the salt spray test chamber lid can be normal switch, if the switching process is no abnormal sound, no jamming phenomenon, then the maintenance is complete.

III.Other potential causes and solutions

Salt spray test chamber lid can not be opened, in addition to the above two main reasons, may also be caused by the control chamber relay failure, poor line contact, or lid seal aging adhesion.

Corresponding measures are as follows:

Relay and line problems: check the salt spray test chamber control cabinet relay, if found contacts burnt or can not be normal suction, need to be replaced in a timely manner. At the same time, carefully check the relevant lines to see whether the connection is firm, there is no damage, short circuit. For loose joints, re-insertion and extraction fixed; line damage, need to repair.

Salt spray test chamber sealing strip aging adhesion: If the sealing strip aging adhesion caused by the salt spray test chamber lid is difficult to open, the hair dryer can be used to evenly heat the test sealing strip, to be softened, carefully pry the lid edge. After successfully opening the lid, the sealing strip should be replaced in time.