landochiller
New Member
Regarding this article, will inform you of the Ultimate Guide to Aquarium Water Chiller System.
The content includes the following:
1. How to do when high-pressure alarms?
2. How to do when low-pressure alarms?
3. How to do when oil pressure differential alarm?
4. How to do low when compressor thermal protection?
5. Cooling capacity is poor, No reach the set temperature?
6. How to do when exhaust temperature alarm?
7. How to do if the evaporator frosting serious?
8. How to do when compressor oil back bad?
9. How to do when compressor suction temperature is too high?
10. How to determine the refrigerant charge?
Guide 1 – How to do when high-pressure alarm?
1. Reasons :
1) Cooling water (or air) flow is too small to take the heat from the compressor condensation.
2) Cooling Water (or air) temperature is too high to take the heat from the compressor condensation, also the heat transfer is not good.
3) There is air in the system, which makes the condensation pressure rise.
4) Excessive refrigerant charge, the liquid occupies the effective condensation area then make the condensation pressure increased.
5) The condenser disrepair. Heat transfer surface fouling is serious, it can also lead to condensation pressure rise.
There are plenty of other reasons, but consider from the bellow first:
1. There is much more refrigerant in the condenser.
2. Refrigeration Systems have other impurities that occupy the condenser heat transfer.
3. The condenser does not condense well
2. How to process?
1) Check whether there is any problem with the high voltage control and whether there is an error alarm.
2) Touch the condenser, if the condenser is hot, then the heat transfer effect is not good. So need to check whether the problem with the cooling water (or condensation Fan).
3) Try releasing a little bit of the refrigerant.
(Cleaning water-cooled condenser)
Guide 2- How to do when low- pressure alarms?
1. Reasons:
There are many reasons for the low evaporation temperature. Usually, it will be affected by the lack of refrigerant in the evaporator or the poor heat transfer of the evaporator
1) The expansion valve is less open.
2) The cooling system is short of refrigerant
3) The capillary or expansion valve is blocked
4) The filters are clogged.
5) Lack of internal airflow
6. Evaporator frosted seriously
1 ~ 4 points are mainly analyzed from the refrigerant less, 5 ~ 6 points main analysis evaporator heat transfer is not good.
2. How to process?
1) Check the low voltage control, make sure the voltage control has no problem and no false alarm.
2) Check the evaporator for dirt, block up the return air of the evaporator (whether the water-cooled evaporator has incrustation affected heat transfer).
3) Check the evaporator to see if the frost is serious, if so, check the evaporator fan (or frozen water) whether has the problem, exclude the small air or small water volume.
4) Check the expansion valve is dirty block and other faults, remove the expansion valve opening small cause of low evaporation pressure.
Guide 3 – how to do when oil pressure differential alarm?
1. Reason :
A compressor is a complicated machine running at high speed. It is the basic requirement to keep the compressor running normally to ensure the lubrication of the crankshaft, bearing, connecting rod, piston and so on.
The main reasons are as follows:
1) The refrigeration oil insufficient causes the compressor crankcase oil level is insufficient, the oil pump can not suck the oil.
2) The oil dirty, cause oil pump filter plug.
3) The oil differential relay is out of order.
4) Failure of the oil pump.
5) There is a large amount of freon in the frozen oil, causing the oil pressure to fail to build up.
6) The return fluid —— The danger is in the dilution of the lubricant.
2. How to do?
1) Add enough refrigerant oil to the standard liquid level of the Mirror.
2) Replace the new cooling oil, cleaning the filter screen.
3) Replace the new oil differential relay.
4) Replace oil pumps.
5) Shutdown, through the compressor’s own electrolytic heat in the crankcase heating, plays up the oil fluorine separation or the next start-up needs to ensure that the refrigeration oil above normal temperature.
6) Diluted lubricating oil to the friction surface, low viscosity, can not form a thick enough to protect the oil film, over time will cause wear, adjust the over-liquid evaporator.
Will update other guides soon.
The content includes the following:
1. How to do when high-pressure alarms?
2. How to do when low-pressure alarms?
3. How to do when oil pressure differential alarm?
4. How to do low when compressor thermal protection?
5. Cooling capacity is poor, No reach the set temperature?
6. How to do when exhaust temperature alarm?
7. How to do if the evaporator frosting serious?
8. How to do when compressor oil back bad?
9. How to do when compressor suction temperature is too high?
10. How to determine the refrigerant charge?
Guide 1 – How to do when high-pressure alarm?
1. Reasons :
1) Cooling water (or air) flow is too small to take the heat from the compressor condensation.
2) Cooling Water (or air) temperature is too high to take the heat from the compressor condensation, also the heat transfer is not good.
3) There is air in the system, which makes the condensation pressure rise.
4) Excessive refrigerant charge, the liquid occupies the effective condensation area then make the condensation pressure increased.
5) The condenser disrepair. Heat transfer surface fouling is serious, it can also lead to condensation pressure rise.
There are plenty of other reasons, but consider from the bellow first:
1. There is much more refrigerant in the condenser.
2. Refrigeration Systems have other impurities that occupy the condenser heat transfer.
3. The condenser does not condense well
2. How to process?
1) Check whether there is any problem with the high voltage control and whether there is an error alarm.
2) Touch the condenser, if the condenser is hot, then the heat transfer effect is not good. So need to check whether the problem with the cooling water (or condensation Fan).
3) Try releasing a little bit of the refrigerant.
(Cleaning water-cooled condenser)
Guide 2- How to do when low- pressure alarms?
1. Reasons:
There are many reasons for the low evaporation temperature. Usually, it will be affected by the lack of refrigerant in the evaporator or the poor heat transfer of the evaporator
1) The expansion valve is less open.
2) The cooling system is short of refrigerant
3) The capillary or expansion valve is blocked
4) The filters are clogged.
5) Lack of internal airflow
6. Evaporator frosted seriously
1 ~ 4 points are mainly analyzed from the refrigerant less, 5 ~ 6 points main analysis evaporator heat transfer is not good.
2. How to process?
1) Check the low voltage control, make sure the voltage control has no problem and no false alarm.
2) Check the evaporator for dirt, block up the return air of the evaporator (whether the water-cooled evaporator has incrustation affected heat transfer).
3) Check the evaporator to see if the frost is serious, if so, check the evaporator fan (or frozen water) whether has the problem, exclude the small air or small water volume.
4) Check the expansion valve is dirty block and other faults, remove the expansion valve opening small cause of low evaporation pressure.
Guide 3 – how to do when oil pressure differential alarm?
1. Reason :
A compressor is a complicated machine running at high speed. It is the basic requirement to keep the compressor running normally to ensure the lubrication of the crankshaft, bearing, connecting rod, piston and so on.
The main reasons are as follows:
1) The refrigeration oil insufficient causes the compressor crankcase oil level is insufficient, the oil pump can not suck the oil.
2) The oil dirty, cause oil pump filter plug.
3) The oil differential relay is out of order.
4) Failure of the oil pump.
5) There is a large amount of freon in the frozen oil, causing the oil pressure to fail to build up.
6) The return fluid —— The danger is in the dilution of the lubricant.
2. How to do?
1) Add enough refrigerant oil to the standard liquid level of the Mirror.
2) Replace the new cooling oil, cleaning the filter screen.
3) Replace the new oil differential relay.
4) Replace oil pumps.
5) Shutdown, through the compressor’s own electrolytic heat in the crankcase heating, plays up the oil fluorine separation or the next start-up needs to ensure that the refrigeration oil above normal temperature.
6) Diluted lubricating oil to the friction surface, low viscosity, can not form a thick enough to protect the oil film, over time will cause wear, adjust the over-liquid evaporator.
Will update other guides soon.
