omi ESD 1300, Instruction And Maintenance Manual

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Cod. 710.0159.01.00 Rev0A – 10.2011
9 - 275
6.4 Functions menu
Press and release button to enter the Functions menu.
When in “Functions Menu” the icon is illuminated.
Press and release to close the Functions menu or wait 15 sec. (Automatic close).
Functions Menu allows to:
1. Show and reset the active alarms (“ALrM” function).
2. Show or reset the ALARM LOG (“ALOG” function).
3. Show and reset the time running hour counters of refrigerant compressor (“C1Hr” function).
4. Upload the parameters from the controller to the Hot Key (“UPL” function).
6.5 Alarms
The controller is able to recognize particular types of faults in the drying circuit. When this occurs, the display shows the required
information necessary to find out the cause.
The controller is programmed to recognize and display prealarms and alarms.
Alarm conditions read - out
When a fault is detected the Lower display shows a blinking alarm label and the correspondent
icon alternating with the temperature. The Upper display always shows the Dew Point
temperature.
Buzzer active.
Silencing the Buzzer (if present)
When an alarm is activated, the electronic board will emit an acoustic signal (buzzer).
The buzzer can be stopped in two ways:
- Automatically: when the alarm condition is recovered.
- Manually: push and release one of the keys of the controller; the buzzer is stopped even if the alarm is still active.
6.5.1 Prealarms and Alarms description
Prealarms show conditions of critical operation of the dryer, they will not stop the refrigerant compressor.
When this situation occurs it’s suggested to make the required maintenance to eliminate the prealarm condition.
Alarms means conditions of critical operation of the dryer for a determinate preset delay, normally they are preceded by a prealarm
signalling. Alarms stop the refrigerant compressor, except Pb2, Pb3 and Pb4.
When this situation occurs it’s necessary to make maintenance for recover the fault condition.
6.5.2 For display and reset an alarm
1. Enter the “FUNCTIONS MENU” ( button).
2. Find “ALrM” using the buttons and .
3. Push button to display the alarms:
- Lower display will show the code of the active alarm.
-
Upper display will show “rSt” label if the alarm can be resetted or “NO” label if it is not resettable.
- To reset an alarm push button when “rSt” label is lighted (at reset done the controller automatically skips to next alarm).
- Scroll all alarms by using and buttons.
4. Quit by pushing button or wait for automatic quit.
Resettable alarms
An alarm is defined resettable (rSt) when the generating cause disappears. These alarms can be directly resetted by the controller
proceeding as follows:
- Display the alarms following the above instructions, then push button when “rSt” label is lighted (at reset done the
controller automatically skips to next alarm, if present).
-
Quit by pushing button or wait for automatic quit.