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#YORK YCAL LOW AMBIENTKIT FULL#
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Your condenser level set point may be 40, 50 ,70 % what ever gets it into the bottom of the glass that is your base point, then you can check your approach when all the oil is returned to see if you are properlly charged. The machine protects it's sell from low super heat by backing off until it gets above 10 degrees. Make sure there are not big swings in the condenser water temperature as that causes oil loss as well. Keep your condenser water at 70 to 74 degrees that is not your problem. The drier and line on the return eductor should be cold to the touch and the drier and line should be insulated so as the oil laden refrigerant can make the lift back to the seperator. Make sure your oil heater is working and make sure your oil return is working. Trouble is there is usally some oil that leaves at start up and foules up the charge for awhile until it returns.This causes the low discharge temperature. When the unit starts it changes that condenser set point to a lower number so as not to starve the evaporator. Raise the level until you see refrigerant just in the bottom of the condenser sight glass. The condenser level setting is a arbatrary number it is offten not accurate and needs set for your job. I have had the same problem with the same machine.

The chiller is back on line and is not in alarm, it looks like the valve preset time worked so far I will be checking temps and pressures and compring them to the opti view readings I just changed that up to 85 seconds and am restarting the machine. I can not find the time setting for the varible orifice, is it the valve preset time on the condenser/refrigerant level control page? this value is at 50 seconds. The oil level appeared ok durring start up I have been looking for a chart that I can plot my dp/fthd to figure out were I am in the required gpm range but had no luck. The sales order screen dp pressure for the eavp was 26 psi, so I am definitly low. I raised the vfd max to 100% and my dp went up to about 17. I took a dp across the evap and came up with 15psi, and found the chill water tripple duty valve on the discharge of the pump fully adjusted out and the vfd for the pump was running ay 93%( the pumps vfd is for soft start only). The chiller started up and had low discharge SH for the first few minutes but went away and has not come back.

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