SCCB TYPE G-203-P00 Service Manual for Producers Page 3
PPUH „GECO” EDITION I PRINTOUT DATE 2014-04-15
I. GENERAL CHARACTERISTICS
The Self-contained Control Block, called further GC203 is a modern device, comfortable and easy to
use. The controller has been made using microprocessor techniques with the application of automatic surface
assembly process.
Owing to the twin part case and revolutionary technical design, the G-203-P00 can be applied to any
refrigerated counters or refrigeration chambers. The safe voltage operated control panel (5 V) may be installed
in any place, without the necessity of cutting any additional openings or running a number of power supply
cables far away from the equipment being controlled.
The GC203 has possibility to work with two temperature sensors and depend on parameter
configuration it can be equipped with a door open sensor (magnetic of optic) or third temperature sensor. All
sensors work under a safe voltage operated (5 V). Controller’s module has also four outputs allowing direct
connecting of the 230 V operated equipment, with loading ability as summarized in table 1.
The Controller is equipped with a sound signal (as a standard) which is activated while pressing buttons
on keyboard and in the event of the alarm.
In order to provide comfort of using the controller, capacitive (touch) buttons were used in the
keyboard.
GC203 stabilizes temperature and controls automatic defrosting mode. Defrosting mode period can be
adjusted to specific surrounding parameters. GC203 has also a button user for manual defrosting of an
evaporator. The GC203 has also been equipped with lighting system switch (depends on keyboards version)
which is operated independently of the main switch.
No special maintenance measures are required for these thermostats; the keyboard has been made
from high temperatures resistant plexi as well as resistant to most chemicals. However, cleaning plexi with
sharp objects is not allowed. Instead, use the damp cloth and clean the front panel with it from time to time.
II. METHOD OF MARKING AND TECHNICAL DATA
Model: GC203.0X
0X – number indicating the version of the controller
01 – three-relay controller controlling following devices:
compressor/fan/heater or valve.
Keyboard of the controller’s panel without light button.
The standard input 1-2 enables the connection of an additional sensor whose selection depends on
the parameter r6. Depending on the setting of this parameter, we can connect the door opening
sensor (mechanical or magnetic) or an additional temperature sensor that performs the function of a
thermometer (for r6 = 3).
02 - four-r relay controller controlling following devices:
compressor/light/fan/heater or valve.
Keyboard of the controller’s panel with light button.
The standard input 1-2 enables the connection of an additional sensor whose selection depends on
the parameter r6. Depending on the setting of this parameter, we can connect the door opening
sensor (mechanical or magnetic) or an additional temperature sensor that performs the function of a
thermometer (for r6 = 3).
03 - single-relay controller controlling the work of a larger power compressor. The controller's keypad is
made without a light button.
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