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Technical Support, Controls Info no.: 0179-100
Web: www.sabroe.com
Revision: 3.2 - Updated: 07-03-2022 Author: IVH/JAN Page 2 of 9
Jumpers in Unisab III
The Unisab III is delivered with jumpers for digital inputs.
If you do not use the below mentioned digital inputs it is necessary to use these jumpers in
order to make the compressor start and run properly without any alarms or shutdowns.
See picture below:
Digital inputs: Connect jumpers if not used
Terminal row terminal Function
X3 3-4 R: Intermediate oil return, S: Oil pump feedback*
X3 5-6 R: High p. oil return, S: Cooling fan/ Oil pump2 feedback*
X3 11-12 External start permission/ normal stop
X3 13-14 External start permission/ instant stop
X3 19-20 PMS feedback
X3 27-28 Thermistor for motor temperature
R = Reciprocating, S = Screw
*On screw compressors do not connect jumpers for Oil pump/ Oil pump2 feedback. If no oil
pumps, leave the inputs open.