Both the automatic restoration of the HMI technological parameters to the defaults and blank screen are caused by the bad contact of the communication cable. Try to plug in the USB interface again.

Regarding LandGlass flat&bent; bi-directional glass tempering furnace, following steps should be concerned for the conversion procedure between flat & bent tempering.

Most of the spontaneous breaking of the tempered glass happens due to the nickel sulfide stones in the glass sheet. Through homogeneity treatment of the tempered glass, the probability of spontaneous explosion of tempered glass during use can be reduced.

Spontaneous explosion is one of the features of tempered glass. Usually it occurs during tempering, storage or using without being exerted any mechanical external force. But how this happens and how to prevent it?

Stress marks may be seen on the tempered glass, which are usually due to the reflection under the polarized light, such as sunlight or other forms of reflected light.

The dampproof powder sticks to the glass when it is damped or there are sundries on the surface of the glass, which are not cleaned up before tempering; 2. Some of the thermal insulation layer falls off from the top of the heating furnace.

Most of the hardware faults of PLC on the glass tempering furnace are caused by periphery ones, for the processor can inspect itself constantly during the runtime of PLC and the problems on its own would be alerted by the panel light.

According to the national standard, the overall bow of flat tempered glass should not exceed 0.3% and local wave should not exceed 0.2%. The flatness of tempered glass is one of the major indicators of the glass quality.

During the working process of glass tempering furnaces, some major faults may turn up such as sudden power failure, system halt, malfunction of the furnace door caused by air source or mechanical problems, glass breakage in the heating furnace or chiller, glass sticking to the ceramic roller, etc. Measures must be taken in such emergencies, or heavy loss may probably come about.