Samsung AM***MXWA Series - Post-Detection Actions and Precautions

ENGLISH-100
Automatic refrigerant amount checking function
• When the temperature is outside of guaranteed range, you can not obtain an accurate result.
- Indoor : 20~32 °C
- Water temperature : 15~40 °C
• If the operation cycle is not stable, refrigerant amount detection operation may end.
• Accuracy of the results may decrease if the product is not operated for a long period time before the refrigerant
amount detection function operation is activated. Use the refrigerant amount detection operation function after
operating the product in cooling mode for at least 30 minutes.
• Depending upon the operational environment, a system protection operation may be triggered. As a result, the
refrigerant amount detection result may be inaccurate.
Actions to take after the detection result
• Excessive amount of refrigerant : Discharge 5% of the detected amount of refrigerant and restart the refrigerant
amount detection operation.
• Insucient amount of refrigerant : Charge 5% of the detected amount of refrigerant and restart the refrigerant
amount detection operation.
• Insucient degree of supercooling : Charge 10 % of the detected amount of refrigerant and restart the
refrigerant amount detection operation.
• Judgment not available : Check if the refrigerant amount detection operation was executed within guaranteed
temperature range. Execute trial operation to check if there's any other problems on the system.
CAUTION
Precaution before trial operation
1. Water quality management
- It is not possible to disassemble the plate heat exchanger for cleaning or part replacement. therefore, to prevent
corrosion or water scale on the plate type heat exchanger, you must manage the cooling water quality in compliance
with standard of cooling water.(Refer to page 103.)
- If the temperature of water is higher than room temperature, make sure to keep the concentration of chloride ion
below 100 ppm to prevent corrosion and the water hardness should be below 150 mg CaCO3/L to prevent water scale.
When a scale inhibitor is used, make sure to use the a type that is corrosion-free to the stainless steel and copper.
2. Water ow management
- Insucient water ow will lead to accidents related to frozen plate type heat exchanger. Check to make sure if there
is any decrease in amount of water ow due to blocked strainer, problem on air ventilation or circulation pump after
checking the temperature/pressure dierence between the inlet and outlet of the plate type heat exchanger. If the
temperature/pressure dierence exceeds optimal range, stop the operation until remedial action is taken before the
operation is restarted.
3. Counter-measures after E436 error (anti-freeze control) display
- If E436 is displayed during operation, make sure to take care of the cause of problem before re-starting the operation.
Water may freeze partially from the point when E436 is displayed. If you re-start the operation before the problem
has been taken care of, plate type heat exchanger will shutdown and it will be impossible to melt the ice. If the water
remains frozen, plate type heat exchanger will break and cause refrigerant leakage or water may enter into the
refrigerant cycle.