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New compressor weighed in charge and still no colling

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WHEN CHANGING A COMPRESSOR THE FILTER DRIER NEEDS TO BE CHANGED. ALSO, A SOLDERED JOINT COULD BE BLOCKED. YOU MIGHT NEED TO CHECK THEM. DID YOU PUMP THE SYSTEM DOWN FOR AT LEAST 10 MINS AND THEN ADD THE SPECFIED CHARGE??

Posted on Dec 02, 2008

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Posted on Jan 02, 2017

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Add 134-a to refrigerator


You will need to install line taps on the service pigtails in the compressor compartment. Attach your gauges and remove the remaining refrigerant from the system. Cut the 2 access pigtails just below the temporary access valves and braze permanent Schrader valves for gauge access. Install gauges and draw a vacuum on the system. Find the charge listed on the spec. tag that mentions model and serial number. Get an accurate scale that weighs in ounces and weigh in exactly the charge by the ounce. The charge is critical and since this temperature control measures coil temperature and not cooler temperature it will not shut off without a close charge. Hope this helps and good luck.

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What happen if my refrigerator compessor is overloaded with freon


If overcharged during charging of Freon compressor will be stressed and cooling will affected. Charging refrigerators are very sensitive to overcharging because refrigerator's use very little Freon, only about 6 ounces. Symptoms of overcharging are high compressor amperage and difficulty cooling. Best to weigh Freon while charging and always use a new filter drier. Refrigerator's are also extremely sensitive to have even one drop of room air in the lines (sealed system)before recharging and require a long and perfect vacuum before recharging. Symptoms of air in the sealed system are compressor starting and then shutting down because small amounts of room air in the system cause compressor to strain bogging compressor. Air in the system will cause water droplets to freeze in the capillary tube causing a blockage that causes the compressor to stop and start again once the droplets thaw out. I will be glad to explain more should you have more questions, Thanks, Sea Breeze

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Recently had a line and Freon replacement after which the Compressor worked for 2 hours and now stopped and only intermittent kicking.


Was the system properly evacuated and a new drier installed ?
Was the refrigerant charge weighed in ?

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Model km-250baf hoshizaki with weighed in correct amount of 404a the head preasure risies to over 400 psi i think it is the txv advise me if i am right


There are a lot of variables that cause high head pressure. Be sure the cool ing fan is operating properly. It should come on whenever the condenser coil feels warm to the touch. It will cycle on and off as the pressures change. A clogged up coil will also cause high head pressure. If you don't have sufficient water flowing over the evaporator plate, where the ice freezes, the head pressure will go up. You need to check the low side head pressure as well. Weighing the charge is a good start to charging the machine , but the first question I would ask is why are you charging it? Was there a leak, or compressor change?
If you had a compressor burnout, did you replace tthe drier-filter?If not, it may be stopped up from burnout residue. That will also cause high head pressure. If you did not vacuum the system there may have been refrigerant still in the system before you started the new charge. Check the items I mentioned and see if that helps.

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1 Answer

My window ac is not providing cooling. The compressors runs but it doesnt colles the cooling coil. The regerent is also charged


the start capacitor is either defective or if the compressor has a ptc overload relay,this could be the problem then

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1 Answer

Compressor working, cooling coils hot, but unit won't cool below


When you say fully charged, did you weigh the refrigerant? These small systems cannot tolerate overcharging by even small amounts because it will result in overpressure on the suction side. If there's too much refrigerant you get hot coils and cool but not cold evaporator. I typically pump the refrigerant into a recovery tank and then weigh it back in to get exactly the amount on the mfg label.

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Ac fulley charge not getting coole


your compressor clutch might be shot in wich case the system although charged will not circulate the freeon.

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Compressor keeps running, and really noisy, seems to be working though, when thermostat set to off the compressor shuts off, so the thermostat should be good right, could it be a low charge, or just a bad...


i agree with you its is one of those problems you mention or both,so lets look at cost first:under new EEU regulations an engeneer has to drain you old gas from your fridge back into a special containor he will charge you for disposing it, then he will charge you for finding your leak/s and repairing it or them and last he will tell you what you already know your compressor is on its way out.I want you weigh up the costs of repair which im sure will be quite substantional to the price of a new or good second hand fridge your call ,.hope this helps you.adrian

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Saniserve 707a margarita machine


The best thing to do would be to recover the 404a into a clean recovery jug,weighing how much you take out. Check the nameplate on back it will tell total ref charge. in either oz or lbs. then weigh the charge back into the unit. this is the best wayto verify if you have a proper charge.If the unit is low on charge then you will want to find and repair the leak as soon as possible.

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