Model SDC-101Download SDC-101 Installation InstructionsDownload SDC-101 BrochureThe ProblemFailure to establish programmed flow after pump turn on signal has been applied.Failure to maintain proper flow during normal operation due to line clogging, line rupture, incorrect valve positioning, etc. The SolutionInsertion of an SDC-101 shut down control in the input power line of pumps, heaters, valves, etc., that are flow critical will interrupt power automatically upon loss of flow.Power will remain off until the problem has been corrected and proper flow re-established.Loss of pump prime is a persistent fluid system problem. A flow switch at the pump output is a viable solution, except that it presents a “Catch 22″ situation, i.e. lack of flow at start up will not allow the flow switch to supply power to the pump. A manual push to start or automatic time delay relay switch in parallel with the flow switch is required to supply power to the pump motor during startup. After the pump is up to speed the parallel switch kicks out and the flow switch takes over flow monitoring. Model SDC-101 is provided with a parallel variable time delay relay switch/flow switch combination to provide pump protection during startup as well as the continuous phase of operation. SDC-101 modules may be connected to monitor:Critical points in simple one pump systems or, in series, with pumps, heaters, valves, etc., so that failure of any part will shut the whole system down.Isolated or remote components and sub-systems.For Use InChemical process industrySanitationFood processingAerospace ground support systemsWater treatmentMiningAgricultureTransportationAdditional Features:Continuous adjustment of time delay cycle.120/240 VAC and DC power optionsRain resistant housing for rugged, industrial usageCan be used in mobile vehicles, ships, trains, etc.Operational Features:Supplied pre-wired and ready for immediate installationAll components UL listed or recognizedInput and output power lines are quickly and easily attached to 30 AMP terminal blockTerminal block positions are numbered and wiring is color coded for easy, fast and accurate installation and servicing.Performance checks are quick and straightforward using an uncomplicated, standard multimeter.SpecificationsControl BoxRain resistant type 3R – UL listed J&P Box 312J, P/N 70233A Time Delay RelayOperationWhen rating voltage is applied to the input, the timing cycle begins and the DPDT relay is activated. At the end of the timing cycle, the relay is de-activated and remains in that condition until power is removed from the input. Switching off and then turning on of input power re-starts the timing cycle. This timing sequence will repeat each time the system is turned on.Input Voltage – 120/240 VAC, 50/60 HzOutput Contact Arrangement – DPDTContact Rating10 AMP, 1/2 HP @ 120/240 VAC, 50/60 HzStandard Time Cycle1 to 180 seconds, Continuously adjustableAmbient Operating Temp. Range -5° to 140°FTermination – 1/4″ quick disconnect terminalsMotor Contactor SpecificationsOperating Coil120 VAC or 208-240 VAC 50/60 HzInrush: 31 VAContinuous Use: 7 VAPickup: 90 VAC (120 VAC Coil)170 VAC (208 VA Coil)Coil Insulation: class BCoil Connections: Double Male 1/4″ quick connectMaximum Ambient Temperature: 155°Output Power ContactsType: DPST – Normally OpenContact rating per pole. Switch Performance DataRefer to manufacturer’s specification sheets for information regarding performance of:Harwil Fluid Flow switchesHarwil Air Flow switchesPressure switchesMotion Limit switchesProximity Switches, etc. which may be used in conjunction with, but are not included with, the SDC-101 module. Complete operating instructions. Mechanical and Electrical installation drawing and a numbered parts list is supplied with each unit.Maintenance and checkout is a snap for your present personnel using an uncomplicated standard test meter.Terminal Strip – 812 SeriesElectrical RatingRated voltage – 1600 Volts RMSCurrent rating – 30 AMPSWire SizeWill accommodate lugs for wire sizes AWG #14 to #12HardwareScrews and terminals – brass, nickel platedSolder terminals – brass, hot-tinnedMolded MaterialG.P. phenolic (94V-0).UL RecognizedUL File No. E47811CSA File No. 21356Installation drawing and a numbered parts list is supplied with each unit.Special One Day Delivery Available.
