Atlas Copco

F2

UnclassifiedCooling

What This Code Means

High compressor element outlet temperature; High cooling water outlet temperature; High dewpoint; High DP (differential pressure) of oil separator; Fan motor overload; Regulator does not allow to enter a new command which is situated before the last command in the list timewise; Programmed start/stop commands are not executed; Shut-down warning screen is displayed; Outlet temperature of the compressor element is too high; LED (7) is alight; Main screen displays '*Serv Requir*'; Indicators (**) are blinking; Service warning message appears; <<Inputs>> is blinking in the Status data menu; <<Plans>> is blinking in the Status data menu; Compressor is shut down; LED (7) blinks; Display shows Element Outlet temperature exceeding maximum limit (e.g., 122 C, Shd Max 120); Motor overload condition; Service warning; Service condition; The screen shows the compressor is shut down (Shd); Compressor element outlet temperature actual reading (e.g., 122 °C) is higher than the shut-down setting (e.g.,

Possible Causes

  • •Element outlet temperature reaching or exceeding the shut-down or shut-down warning threshold settings
  • •Cooling water outlet temperature or dewpoint reaching warning thresholds
  • •Oil separator reaching maximum pressure drop threshold
  • •Fan motor overload contacts status change
  • •Regulator programming restriction that prevents inserting a chronological command before the final command in the active sequence
  • •Clock function is not activated
  • •Compressor element outlet temperature exceeded the maximum limit (e.g., 116 °C vs Max 110 °C)
  • •Programmed service level of a component is exceeded (e.g., maximum pressure drop of the oil separator)
  • •Service plan interval is exceeded
  • •Too high a temperature at the compressor element outlet
  • •Motor overload
  • •Service interval reached or service condition triggered
  • •Compressor element outlet temperature exceeded the programmed shut-down setting
  • •Fan motor overload relay (F15) tripped
  • •A parameter reached a programmable warning level below the shut-down level

Suggested Actions

  1. 1Navigate to Menu -> Modify Params -> Protections -> Element outlet and press Mod (F2) to modify the shut-down (<<Shd>>) or shut-down warning (<<Shdw>>) threshold settings.
  2. 2Modify the warning (<<Warn>>) protection settings in the parameters menu.
  3. 3Modify the service warning (<<Serv>>) protection settings for the oil separator pressure drop.
  4. 4Check the status of the fan motor overload contacts in the compressor conditions parameters list.
  5. 5Scroll through the display until the command before which the new command must be entered is followed by a horizontal arrow.
  6. 6Press the 'Mod' key.
  7. 7Change this command to the new command and press the 'Prog' key.
  8. 8Press the down arrow (↓) key, add the original last command of the list, and press the 'Prog' key.
  9. 9Activate the clock function (change status to <<Activated>> in the Clock function menu)
  10. 10Stop the compressor by pressing button 0 and wait until it stops
  11. 11Switch off the voltage
  12. 12Inspect the compressor and remedy
  13. 13Allow warning condition to disappear automatically for the warning message to clear
  14. 14Stop the compressor and switch off the voltage
  15. 15Replace the oil separator
  16. 16Switch on the voltage
  17. 17Scroll in the Status data menu to <<Inputs>> and press the Rset key to reset the service message
  18. 18Carry out the service actions related to the indicated plans
  19. 19Reset the timers of the related plans
  20. 20Reset the shut-down condition using the Rset (F3) key

Related Atlas Copco Fault Codes

F3F4F1F15<<WARN>>L7<<SHDW>>L8<<SHD>>LOW COOLANT ALARM<<SERV>>LOW VOLTAGE WARNING
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