ENGLISH
18 Code 9828093379 ed 00 05/2020
14.4 COMMAND AND CONTROL PANEL (BASE CONTROLLER VERSION)
(FIG.17b)
BEFORE CARRYING OUT THE OPERATION TEST, READ CAREFULLY AND GET A GOOD KNOWLEDGE OF THE
CONTROL FUNCTIONS.
1) Electronic controller
– Base Controller
2) Emergency stop button with rotate-to-unlatch mechanism
3) Dryer
’s “OFF - ON” switch
4) Dryer
’s digital controller
COMPRESSOR CONTROLLER
14.4.1 INTRODUCTION
In general, the controller has following functions:
- Controlling the compressor;
- Protecting the compressor;
- Monitoring service intervals;
- Automatic restart after voltage failure (made inactive).
AUTOMATIC CONTROL OF THE COMPRESSOR
For 2.2-4 kW (3-5.5 HP) machines, the controller automatically switchs on/off the machines to maintain the pressure in the desired range.
For 5.5-7.5 kW (7.5-10 HP) and 4 kW (5,5 HP) single phase 60Hz machines, the controller maintains the net pressure between programmable
limits by automatically loading and unloading the compressor. A number of programmable settings, e.g. the unloading and loading pressures, the
minimum stop time and the maximum number of motor starts are taken into account. The controller stops the compressor whenever possible to
reduce the power consumption and restarts it automatically when the net pressure decreases. If the expected unloading period is short, the
compressor is kept running to prevent too short standstill periods.
PROTECTING THE COMPRESSOR
SHUTDOWN WARNING
The shutdown warning is a programmable warning that advises the operator about a possible problem before the shutdown. If one of the
measurements exceeds the programmed shutdown warning level, this will also be indicated to warn the operator before the shutdown level is
reached.
2
1
4
3
COMPRESSOR CONTROLLER
CONTROL PANEL DRYER
FIG. 17b
