Sterling SDA 1000-5100 Manual Do Utilizador

Large Dehumidifying Dryers  

Troubleshooting 

51 

The Alarm Screen will pop up to show what alarm the dryer is having that moment.  Look 
through the window on the door to see the screen. 

 

The Main Air Valve did not maintain or find 
position. 
Possible Motor or Limit Switch Failure. 

Immediate 
Shut Down  

The Closed Loop Cooling Valve did not find 
position. 
Possible Motor or Limit Switch Failure. 

Immediate 
Shut Down 

The process supply air temperature switch 
opened. 
Possible thermocouple failure. 

Process 
Shut Down 

The regeneration air temperature switch opened. 
Possible thermocouple failure. 

Regeneration 
Shut Down 

Process air temperature deviation is above high 
limit value. 
Possible solid state relay failure. 

Process 
Shut Down 

Process air temperature deviation is below low 
limit value. 
Possible heater failure. 

Alert Only 

Regeneration air temperature deviation is above 
high limit value. 

Regeneration 
Shut Down 

The dew point value is above the high limit 
value. 
Possible ambient air contamination or failed 
regeneration cycle. 

Alert Only 

Process blower is not running. 
Possible overload fault, contactor fault. 

Process 
Shut Down 

Regeneration blower is not running. 
Possible overload fault, contactor fault. 

Regeneration 
Shut Down 

Process air filter (PF) or regen air filter (RF) 
requires cleaning. 

Alert Only 

The process redundant air temperature 
thermocouple is out of range. 
Possible thermocouple or solid state relay 
failure. 

Immediate 
Shut Down.