FRICK RXF-39H AMONIA

[servicetrane]

I had problems with the oil temperature of this equipment is a system that uses ammonia and serves as a chiller I leave the machine operating data before protected.

100% capacity
2.20 volume
37.5 psig suction pressure
temperature 10.8 ° C
15.4 ° C superheat

133.4 psig discharge pressure
temperature 86.2 ° c
60.6 ° C superheat
oil pressure 130 psig
temperature 73.7 ° c

process temperature 11.5 ° C
10.0 ° C setpoint
12.0 ° c boot
unemployment 9.0 ° c

I hope their comments and their help

[klove]

Is the liquid injection sytem working? Can you put the temps into Farenheit? Look at the last two items. What is "boot"? What is "unemployment"?

[servicetrane]

[QUOTE=servicetrane;8280481]I had problems with the oil temperature of this equipment is a system that uses ammonia and serves as a chiller I leave the machine operating data before protected.

100% capacity
2.20 volume
37.5 psig suction pressure
temperature 10.8 ° C(51.44°f)
15.4 ° C (59.7°f) superheat

133.4 psig discharge pressure
temperature 86.2 ° c(187.2°f)
60.6 °c(141°f) superheat
oil pressure 130 psig
temperature 73.7 ° c

process temperature 11.5 ° C
10.0 °c (50°F) setpoint
12.0 ° c(53°f) start
9.0 ° c (48.2°f) stop

I hope their comments and their help,oil cooling liquid injection is

thaks

[klove]

Oil temp is in the 165 degree F range. What's the setpoint for liquid injection to start? If injection is turned off and unit is allowed to operate, does oil temp go up? If so, does oil temp go back down when injection is energized? Does this unit have a flooded or DX evaporator? Water or air-cooled condenser? According to the pressures converted to saturated temps that you posted, you have 109 degress F discharge superheat. What's the receiver level? Is the charge level where it should be? Your post says you have 8 degrees F suction superheat, but 37.5 psig R717 is 23.5 degrees F saturated, giving you 36.5 degrees F suction superheat per your numbers posted. Pretty obvious why the resulting high discharge superheat and oil temps.

[servicetrane]

klove:

setpoints PID setup
control running
action forward
control point discharge temperature
setpoint 63°c (145.4°f)

setpoint package safeties

liquid injection enable
on when above 52°c (125.6°f)
evaporator DX
condenser water
oil cooling injection liquid (eazycool)
panel QUANTUM LX

THANKS

[klove]

...According to the pressures converted to saturated temps that you posted, you have 109 degress F discharge superheat. What's the receiver level? Is the charge level where it should be? Your post says you have 8 degrees F suction superheat, but 37.5 psig R717 is 23.5 degrees F saturated, giving you 36.5 degrees F suction superheat per your numbers posted. Pretty obvious why the resulting high discharge superheat and oil temps.

See above

[DFZ]

flooded barrel or direct expansion?

[servicetrane]

flooded barrel

[klove]

flooded barrel

You said in post #5 that the evaporator is DX. Not that it makes a difference, because if your numbers are posted correctly, you still have 36.5 degrees of suction superheat. That's where you need to start.

[DFZ]

with a flooded system the superheat should be almost non-existent

the high discharge superheat is probably the cause of the oil temp

[DFZ]

is the oil separator vertical or horizontal, and what type of oil cooling?

[servicetrane]

horizontal separator,cooling oil is inyecction liquid(eazycool frick)