35NRR 2-52, NRR 2-53, URB 55 - USA- Installation & Operating Manual - 850698-00
Changing the equipment settings
Code switch D - sliding switch, white
NRR 2-52, NRR 2-53 level controller
Code switch D
S1 S2 S3 S4 Configuration
OFF Fill control (factory setting)
ON Drain control
OFF N/A
ON Input for connecting an NRGT 26-x (level transmitter)
Fig. 20
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