Compressed Air Dryer
882.03168.00
2/13/2023
21
Chapter 4:
Operation
Before beginning dryer operation, make sure that there is a good compressed air connection
and that the main power is securely plugged in. Check the process hose and hopper exhaust
filter for tight connections. Check all companion equipment, such as the drying hopper;
verify that the loading system is ready for operation. The dryer will not run if a fault
condition exists. Investigate the cause of any faults.
DANGER!
Always turn the dryer off before servicing. Do not attempt to check the
alarms on the controller located within the unit enclosure unless you are a
qualified electrician.
4-1 Auto-tuning the Dryer
Although the controller is calibrated at the factory, the unit should be auto-tuned prior to
dryer start-up.
Use the following procedure to auto-tune the dryer:
1.
Select operator level 2
2.
Adjust the setpoint to the value at which you will normally operate the process
3.
Press until is displayed
4.
Press or to select
5.
In the HOME display, will flash to indicate tuning is in progress
6.
The controller induces an oscillation in the temperature by first turning the heating
or cooling on, and then off. The first cycle is not complete until the measured value
has reached the required setpoint.
7.
After two cycles of oscillation the tuning is completed and the tuner switches itself
off.
8.
The controller then calculates the tuning parameters and resumes normal control
action.
The time taken to tune the process depends on the process characteristics.
