I work for a commercial refrigeration company in San Diego and we are in the middle of a heat wave (getting up to 120 degrees in some parts). I am the on call tech this weekend and have been getting a lot of calls for units tripped on high head pressure. I'll spray the coils clean with a hose and my pressures will still rise and shut off on high head pressure. I found that if I recover some of the charge the unit will start working and my pressures won't get too high and the unit will run. I know my company charges up condensing units by the sightglass and keep filling it up until the sightglass is full. I was wondering if this may be the reason the units act like they are overcharged when its hot? Thanks in advance
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