The trap can not discharge condensate, the trap for a long time without response, the 4A Air Control Valve surface temperature drop, which is the trap can not open the state.
The reason for this failure:
1, the filter or pipe is impurity, stolen goods blocked, condensate can not flow into the steam trap. The filter, tubing and valve dirt must be cleaned.
2, the amount of condensate discharged from the trap is very small or the action interval length, then it is necessary to replace the small capacity of the trap.
3, do not drain condensate water trap is hot, steam or secondary steam produced by the phenomenon of steam plug Once the steam is condensed, the steam seal that disappeared. This is due to the installation of steam traps caused by unreasonable, the middle of the entrance pipe can not have place to stay condensate.
4, water attack float damage water can not be floating, should replace the new float.
5, the pressure is too large. The pressure of the steam equipment exceeds the maximum working pressure of the trap so that the trap can not be opened. Replace the working pressure of the trap or adjust the working pressure to reduce the steam equipment.
6, water heater coil vacuum, hinder emissions. Install a vacuum damper between the heat exchanger and the pneumatic solenoid water valve.
How to determine the trap is different from the different methods of judging the trap, the simple method requires very professional experience, of course, there are many professional methods of traps, which require some equipment. Since you say that the condensate is serious, that is, the trap does not drain, or the displacement is lower than the amount of condensate produced, which can be seen in the field is very simple. However, there are many reasons for the serious cause of water hammer, may be improper selection, the installation is wrong, there is no filter before the filter or filter failure, resulting in trap clogging.