1. Why is it not possible to ventilate with outside air?
  2. Why can’t I connect via Optilink?
  3. Which program is most suitable now?
  4. Under Running hours I see that the number of internal hours is very high, why is this?
  5. When does a new day start on the storage computer?
  6. Why has my product temperature become too low?

1. Why is it not possible to ventilate with outside air?

  • The outdoor conditions are not good:
    • the outside temperature is too low or too high: check the minimum and maximum  outside temperature and adjust if necessary ;
    • the dew point outside is too high or too low. Adjust the ‘Minimum difference dew point ‘ (Omnicuro ‘Minimum dew point difference outside-product’) by lowering it to -0.5 C;
    • the difference between the outside temperature and the product temperature is too big. Adjust the ‘Minimum difference outside-product’ (Omnicuro ‘Minimum temperature difference outside-product’) by lowering it to -1 C.
  • Other reasons may be a minimum duct temperature that is too low, a product temperature or RH that has already been reached, or the maximum product temperature drop per 24 hours (day) that has already been reached.

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2. Why can’t I connect via Optilink?

  • If you have a server connection:
    • check the internet connection by looking in the ACT where the ethernet cable is plugged in. There should be two lights on (green and yellow), the yellow one flashing. Connect a laptop to the ethernet cable to check whether there is an internet signal;
    • check that the settings on the PC are correct, look at the tab ‘Server access’ and check the ‘Device ID ‘, ‘Username’ and ‘Password’. You received this from Omnivent by email;
    • check the settings in the ACT. With an ACT-40 these are listed under ‘Settings ACT’, heading ‘Network’. Fill in yes at ‘Network Connection’, and also yes at ‘Automatic IP address’. With an ACT-20 these are under ‘ Department ‘ 0, ‘Page’ 3, ‘Line’ 1, ‘Value’ yes and ‘Line’ 2, ‘Value’ yes
  • If you have a direct connection:
    • check the connection by looking in the ACT where the ethernet cable is plugged into the socket. There should be two lights on (green and yellow), the yellow one flashing;
    • check if the settings on the PC are correct, look at the tab ‘Direct access’ and check the ‘IP Address’. This should be a free IP address;
    • check the settings in the ACT. With an ACT-40 these are listed under ‘Settings ACT’, heading ‘Network’. Enter No at ‘Network Connection’, and also No at ‘Automatic IP address’. The IP address should contain a free IP address, which is obtained by searching the PC for a free IP address. If this is found then also a Subnet mask is displayed. Enter this in the ACT-40. Restart the ACT by unplugging it for 30 seconds;
    • on an ACT-20 these are under ‘ Department ‘ 0, ‘Page’ 3, ‘Line’ 1, ‘Value’ No and ‘Line’ 2, ‘Value’ No
    • Follow the same procedure as for the ACT-40.

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3. Which program is most suitable now?

If you have an Omnicuro you can use the Wizard to use the correct program with associated settings. You can also click on the links below. 

If you have an ACT-20 or ACT-40, follow this storage advice for onion and this storage advice for potato.

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4. Under Running hours I see that the number of internal hours is very high, why is this?

There could be two reasons for this:

1. The ‘maximum time without ventilation’ is set to a value that causes the fans to switch on very often. Set this to a higher value, preferably to 24 hours.

2. When working with ACT: The ‘delta temperature Product ‘ is higher than the ‘Maximum delta temperature Product’. Make sure that the maximum is higher than the measured value. When working with OmniCuro: The ‘Product temperature difference’ is higher than the ‘Maximum product temperature difference’. Make sure that the maximum is higher than the measured value.

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5. When does a new day start on the storage computer?

By default, the new day starts at 10 p.m. (22.00 h). You can change it by

With an ACT-20: Department ‘cell number’, Page General settings, Line ’04 start day’, Value ‘time wanted’.

With an ACT-40: go to a department (cell) on the page ‘General settings’, look under the heading ‘Clock’ for the value ‘Start time of day’. The value can be changed by pressing the time

With an OmniCuro: go to ‘Reports’, open ‘Run hours’ and scroll down to the bottom. Under the heading ‘Other’ you will find ‘Reset daily running hours time’

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6. Why has my product temperature become too low?

  1. When using mechanical cooling and if the ‘Room temperature control’ is set to on, it is advisable to set the ‘Temperature difference setpoint room-product’ to +1. This reduces the number of cooling actions. During Room cooling, the program does not look at the desired product temperature, which means that it can become too low.
  2. During CO2 extraction the program only looks at the desired CO2 concentration, not the product temperature. 
  3. When using the ‘RH control outside air’, by default, the ‘RH control temperature deviation setpoint low’ is set to -0.5 C. To achieve the desired RH, the product temperature can be reduced by a maximum of 0.5 C.
  4. OmniCuro: during the use of the Intensive drying program and the setting ‘Minimum external ventilation time’. This can be found on the ‘Timers’ page. This setting determines the minimum duration of outdoor air ventilation. If set at for example 2 hours, it will continue with external ventilation for a period of 2 hours, even if the conditions are no longer suitable for drying. In the meantime, the product temperature may have dropped considerably.

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