low temperature

[karim9]

hi gays i have problem with TRANE water chiller
with low temperature
model CGE with 407C what does't means
best regards

[nike123]

hi gays i have problem with TRANE water chiller
with low temperature
model CGE with 407C what does't means
best regards
Probably nobody here is not gay and therfore lack of answers to your question. I am not gay too, so maybe I sholdn't answer this question, but, what a hell?:D
Chiller is supposed to chill. What is the problem?

[karim9]

sorry guys
the problem is just some times it makes fault with low temperture and one red led on the main board is switchin and when i restart it there is no more prblem for several days and it com back again
can u help me plz

[Brian_UK]

Check water flows.

[superswill]

as brian says check water flow and also water strainer (if fitted)

[karim9]

i have cheked the strainer is clean and the water flow is good
other idea plz
thk u

[superswill]

is the chiller set point lower than temperature alarm set point?

is the glycol concentration correct?

[karim9]

what is the prolem if it have high concatration glycol??
set point was adjusted by technician of trane.
more idea plz

[superswill]

what is the prolem if it have high concatration glycol??
set point was adjusted by technician of trane.
more idea plz


please see


http://www.probrewer.com/resources/refrigeration/glycol.php

[nike123]

hi gays i have problem with TRANE water chiller
with low temperature
model CGE with 407C what does't means
best regards

Do you have problem with low temperature alarm or you cannot achieve required low temperature since this is not clear from your question.

If you have low temperature alarm problem, it is probably set point too low or water flow is insufficient or low temperature alarm is set too high.
If you cannot achieve required low temperature, than problem could be inefficient chiller capacity for actual load or chiller doesn't perform satisfactory (some problem in chiller operation).

[nike123]

i have cheked the strainer is clean and the water flow is good
other idea plz
thk u

How did you checked water flow.
What are temperatures of water at inlet and outlet.
What is set water temperature. What is set differential.
Does chiller thermostat act at right temperatures.

[karim9]

Dear nike123
i have problem with low temperature alarm
the set point is 10c and low temperature alarm is 5.5c
the water flow was cheked by the gage on the water pump and it is right
the water inlet is 12c and out let is 7 c
i thing as super will said is problem on glycol consatration witch was added after and i don't knew the concentration
for narkom the water dioffrence across the evaporator is 0.5 bar
what else plz

[nike123]

Dear nike123
i have problem with low temperature alarm
the set point is 10c and low temperature alarm is 5.5c
the water flow was cheked by the gage on the water pump and it is right
the water inlet is 12c and out let is 7 c
i thing as super will said is problem on glycol consatration witch was added after and i don't knew the concentration
for narkom the water dioffrence across the evaporator is 0.5 bar
what else plz

If you have correct flow with dT of 5°C than set temperature of 10°C (10-5=5) could easy trigger the alarm because set temperature is controlled by water return probe and antifreeze alarm is controlled by water out temperature (which ever is lower). Make your set temperature 12°C and see if this error repeat, or, if you have glycol, than set antifreeze alarm at lower temperature (according to glycol concentration).

[karim9]

thk u nike123
i will do it and i will let u knew the result
thkx

[goshen]

hi if your alarm is low temp water,, then all above is ok ,but if the alarm is low temp refrrigerant, then check your charge ,or the sensors in the evaporator ,trane units with smm control are notorious for the life of their sensors.

[karim9]

dear goshen

the alarm as i have righted is low water teperature
thkx