Common problems and solutions of UV lamps

(1) Is it completely out of light, or does it emit light abnormally?

If it does not light up at all, check it. If the capacitors and transformers are in good condition, and the lines are smooth, and there is no bad contact (there is voltage at both ends of the lamp), the problem is the lamp itself, usually the electrode. , or the light has leaked.  

If the light is abnormal and the color is dim and greenish-yellow, it may be due to the wrong power parameters of the lamp, the slow leakage of the lamp, the unclean exhaust of the lamp during production, and the small transformer configuration.

(2) If there is a pattern on the outside of the lamp tube

This is the phenomenon that occurs when you touch the wall of the lamp tube with your hand during installation.

If there is a pattern on the inside of the wall, the quartz tube is not cleaned enough when making the lamp.

Such a situation will affect the life to a certain extent, so when operating, pay strict attention and do not touch the tube body with your hands.

(3) What is the reason why the metal head of the UV lamp always melts and burns out?

 The metal lamp holder has been used for a long time, the copper frame is oxidized, the local poor contact causes the current to be too large, and the ignition causes melting.  

 The melting of the new lamp is because the metal head of the UV lamp is in poor contact with the lamp holder, and the virtual connection causes the melting to be fired.

 Check:

1. Whether the copper contacts of the lamp holder are oxidized 

2. Whether the spring is elastic.

(4) What is the reason for the sudden exposure of the UV lamp during use?

 It can be viewed from the following aspects: 

Excessive current (such as short circuit of capacitor line) 

Dirt hits the wall of the pipe during suction.  

 The electrode molybdenum and platinum are poorly sealed.

(5) What is the reason for the fogging of UV lamps?

If there is fog in the tube, it is:

(1) The problem of the quartz tube, that is, the dehydroxylation is not good.

(2) Or the exhaust is not good during the production process.

(3) Then the purity of the gas charged is not enough.

If there is fog outside the tube, it is:

The gas volatiles of ink and varnish are attached to the tube wall, which can be wiped regularly with solvents such as alcohol.  

(2) What are the main reasons for the deformation of the UV lamp, and what are the adverse reactions after the deformation?  

The main reason for the deformation of the UV lamp is that the temperature is too high. Slight deformation will not affect normal use, but the life will be shortened a lot. Severe deformation will make the tube wall on one side of the lamp thin and rupture.

Check whether the fan is damaged or the exhaust duct is too long and the exhaust is not smooth.  

(3) What is the matter with the adsorption of crystals in the UV lamp tube?  

In the process of UV lamp production, the quartz tube is not clean and there are impurities.

(4) What happens when the UV lamp tube deforms into a bubble shape and bursts?  

It is because the local temperature is too high, or because the quartz tube wall is too thin, check whether the exhaust system is smooth.

(5) What is the reason why the metal head of the UV lamp always melts and burns out?  

 The metal lamp holder has been used for a long time, the copper frame is oxidized, the local poor contact causes the current to be too large, and the ignition causes melting.

The melting of the new lamp is because the metal head of the UV lamp is in poor contact with the lamp holder, and the virtual connection causes the ignition to melt.

Check whether the copper contacts of the lamp holder are oxidized, and check whether the spring is elastic.

(6) What is the reason why the UV lamp tube cannot be lit after a few hours of use (the lamp is intact)?

If it is a metal halide lamp, it is because the halide ratio is not appropriate, or the output of the transformer is too low, or the tube voltage of the lamp is too high.

If it is a mercury lamp, it may be due to the electrode or the inherent quality of the lamp, or the lamp has leaked.

(7) What is the matter with the blackening of both ends of the UV lamp?

It is the electrode powder that peels off and adheres to the tube wall, but the service life is normal, and it is abnormal if it is used for one to two hundred hours.     

(8) What is the reason for the sudden exposure of the UV lamp during use?  

Excessive current (such as short circuit of capacitor line) 

 Dirt hits the wall of the tube when inhaling.  

 The electrode molybdenum and platinum are poorly sealed.    

(9) What is the reason why the UV lamp always drops in pressure and cannot be recovered during use?  

 Excessive exhaust air 

The temperature of the cold end electrode does not rise.  

The electrical parameters of transformers, capacitors and lamps do not match.  

The network voltage is too low, causing the transformer output voltage to be too low.

(10) After the UV lamp is used for 300-500 hours, why does the pattern appear on the wall of the tube like a hand pattern?  

This phenomenon occurs when you touch the wall of the lamp tube with your hand during installation.  

The inner side of the wall is that the quartz tube is not cleaned enough when it is used as a lamp.

(11) The current and voltage of the UV lamp are normal, but the light is not normal, and the light is green and yellow. What is the reason?

(1) The lamp power parameters are incorrect.

(2) The lamp tube has a slow leakage phenomenon.

(3) The exhaust of the lamp tube is not clean when it is made.

(4) The transformer configuration is small.  

(12) The UV lamp can be turned off normally for the first time, but it can't be lit again. What's the matter?

If the capacitors and transformers are in good condition, and the lines are unblocked, and there is no bad contact (there is voltage at both ends of the lamp), the lamp itself is the problem, usually the electrode is faulty, or the lamp has leaked.