The machine has been in storage for some months but we now need to use it. The old out-going machine has 2 water hoses but this one only has one and presumably draws only from the cold water (hope this is ok as it was a present!!). 2 copper pipes are connected to the incoming pipe under the sink, to which the existing hoses are connected - how do we close off the hot one? Someone's mentioned capping it off - how do we do this or do we really need a plumber?