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override control.The override control Overload Heaters: installed on the discharge side of the also brings on the second pump inIf the Hydromatic electrical panel is check valve,so if necessary to service case of failure of the first pump. the check valve,the line pressure can not used,starters with 3-leg overload be cut off. Single pumpsystems are extra floats with appropriate controls g Y an be supplied for alarm functions. protection must be supplied.On sometimes installed without a check triplex systems use four controls: 3 phase pumps the heaters must valve,where it is desirable to self- one set at turn-off,one set at turn-on be sized in accordance with the drain the discharge line to prevent nameplate amps on the motor freezing.This can be done onlywith for one pump,one set at turn-on for housing.The amp draw on these short discharge lines,otherwise water two pumps,and one set at turn-on for submersible motors is slightly higher will return to the sum and cause three pumps.Pumps alternate each than a corresponding horsepower P successive cycle. short cycling of the pump. surface motor,so heaters must be Three pumps operate together only if sized by the nameplate rating. NEMA 4 Junction Box: (Optional) sump level rises to the fourth control Single phase pumps with capacitor If electrical control panel is to be (second override).This control also start have a run and a start winding; set remote from the pumpsum a brings on the third pump in case of each a different current.To p' failure of either or both of the first drawing NEMA 4 junction box should be adequately protect these windings used to make power and control two pumps. with the appropriate heaters,consult connections.The Hydromatic NEMA Alarm Controls: the factory. 4 junction box is provided with The alarm level is usually set above the NOTE:Red lead is always start compression connectors for sealing all override level so the alarm will signal winding of pump using single phase. wires.No sealing compound is needed only if the override level is exceeded. to make connections waterproof. However,some engineers prefer to Installation The size wire to use from panel to have the alarm level set below the sump depends on motor size and override level as it is possible for one Instructions distance in feet. pump to fail and the other pump to Installing Sump Level Control Be sure each wire is checked out so operate on the override level with the Float Controls: that a wrong connection will not be sump level never reaching the alarm made.An ohmmeter or Megger can be level.This is particularlytrue in cases In either simplex,duplex or triplex used to check wire continuity. if low inflow capacity. systems the lower or turn-off control is to be set to maintain a minimum Installing Float Switch Controls: electrical Control Panel: level in the sump.This level shall be no more than 3W' from the top of the The controls are supported by a It is recommended that the motor housing down to the surface mounting bracket that is attached to Hydromatic control panel be used of the sewage. sump wall or cover,or to the NEMA with all pumps,as proper starter 4 junction box. heaters,and connections for heat The second or turn-on control is set sensor wires are furnished. above the lower turn-off control.The Cord snubbers are used to hold the exact distance between the two floats cord in place. Control lever can be IMPORTANT: If Hydromatic must be a compromise between a changed at any time by loosening the electrical controls are not used and frequent pumping cycle(10 starts per snubber and readjusting cord length. the motor fails because of improper hour max.) to control septicity,solids In either simplex or duplex system components or if the heat sensors and a slower cycle for energy the lower or turn-off control is set are not properly connected,the economy.This distance should be just above the top of volute so that warranty is void. determined by the engineer or the volute will always be submerged consulting engineer,depending on during the pumping cycle.The Hydromatic electrical equipment the conditions of the application. second,or turn-on control,is set is installed in a weatherproof about 24 inches above the lower NEMA 3R enclosure.The electrical Installing Pump in Sump: turn-off control. equipment includes a main circuit Before installingin , breaker for each pump,a magnetic pump P sump, More distance between turn-on and starter with overload protection for lay it on its side and turn impeller turn-off controls can be used,but manually.Impeller may be slightly sewage maybecome septic and each pump,an H-O-A switch and stuck due to factorytest water,so it g P run light for each pump,an electric excessive solids may collect for alternator and a transformer to must be broken loose with small bar the pump to handle.A frequent provide appropriate control for control or screwdriver in edge of vanes.The pumping cycle is recommended circuit and alarms. impeller should turn freely. for best operation. Clean all trash and sticks from sump If an alarm system is used,this tower Cords: and connect pump to piping. control is usually set about 6 inches ''he power cord and heat sensor seal A check valve must be installed on above the override control.Some failure cord are potted into the each pump.A gate or plug valve in engineers,as described previously, connection box cap.The cords must each pump discharge line is also prefer to have the alarm control set not be spliced. recommended.This valve should be below the override control. 3