SRC Service Manual 
Revision 02 
Aug 2007 
 
Page 23 of 56 
 
4.3.2 Outputs 
 
All outputs are digital. 
Digital Outputs (J1 & J3) 
J1 1   Common 
J1  4  NO1  Compressor Contactor (KM1) 
J1 6 C4  Alarm (Common) 
J1  7  NO2  “Dryer On” Relay (KA2) 
J1 9 NO4 Alarm/Warning (N/O) Contact 
J1 10 NO3 Drain Solenoid Valve (YV1) 
J1  12 NC4  Alarm/Warning (N/C) Contact 
 
4.3.3 Electrical Specifications 
 
Power Supply  24 Vac ± 20% 
Temperature Sensor (B1 & B2) Reading Range  -10
o
C to +90°C  ± 1°C 
Input for High & Low Pressure & Remote On-Off  24 Vac 
Output for Drain Level Sensor  5Vc.c. - 15mA 
Output to KM1, YV1 & KA2  V
max
 30Va.c. - I
max
 1A 
Output for Alarm/Warning  V
max
 30Va.c. - I
max
 1A 
 
 
4.3.4 User Interface 
 
On – Off 
Switch
Energy Saving Indicator 
 
 
 
 
Digital Display
 
 
 
 
Control Buttons
 
 
 
 
 
The main control panel of the dryer consists of: 
•  On/Off Switch with door block, 
•  7-segment, 3-digit digital display, 
•  4 LED Lights, and 
• 4 Buttons.