DSHR 1-75 DT

These mono and three phase controllers are used for duty sharing and back-up of dual fan systems where continuous ventilation is needed. They are fitted out with TK contacts for thermal motor protection and RT/FS for external or remote starting and stopping. There are two inputs for differential pressure switches to monitor air flow. 

The motors toggle time can be adjusted by internal jumpers: 2, 4, 8, 24 hours (standard). These  controllers  are designed  to  keep  running  even  in  urgent  situations. The  overrun mode is implemented. Both motors start to work together in case of emergency. Turn on/ off can be accomplished by connecting or disconnecting 230 Vac to the overrun input.The environment is evaluated by LEDs. An alarm is implemented for fault condition warn- ing.