Let me begin by saying that I have no idea about refrigeration and am posting here only to see if I could further help the refrigeration guy who is going to pay a visit to sort out the issue I have in a day or two.
I dont know if you guys knows how a cycle runs in the drycleaning machine but let me explain. First the garment is washed, then drying happens, followed by cooling and then deodorization.
Sometime in the last week of April we called the refrigeration technician and asked him to check if the fridge was okay and do leak testing. He said he charged the gas and did a nitrogen leak test. Ever since the machine is tripping when it runs the cooling phase. Immediately after drying, cooling proceeds and within the first 20 secs the machine triggers an alarm saying lack of fridge water. There is no problem with the fridge water because water pressure is correct(2 bar) and the temp of the water is also correct(50F). Fridge water is supplied through an external chiller connected to the machine. It also aids in distillation of the solvent.
I asked an industry associate of mine in the US and he said he suspects that the fridge has been overcharged. He said it leaves no room for the gas to expand and hence is tripping and triggering the alarm. The last 6 weeks is my location are traditionally the hottest weeks of the year. Average temp during the period was about 115F in the plant.
What I want to know if how much gas there should be present in the fridge for optimum functioning? I know the technician should know all this but my hunch is that he may be inexperienced because he got it wrong on the first attempt.
Please look at the attachments to see if they can aid you in giving me a suggestion.
Thanks a ton!
P.S> I'm located in India.