Mop handle damaged machine No. 3 and No. 4: After checking found that the fill valve is damaged pump pressure (Valve only used in environments without water) -> Commune not be water when the water output wipe the machine's locked -> Overload pump -> fire pump No. 3 and No. 4. UK please see the image of a pressure control valve damaged.
I also checked the rest of the current machine springs inside the van with signs of rust very heavy and will damage the same like machine No. 3 and No. 4, this is very dangerous for the water pump. Given the above I would suggest the following treatment solutions:
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