at 690 kPa (100 psig). Pipe relief vents to receiver tank. Relief valve capacity shall equal or exceed pump capacity at set pressure. Electric Motors: Open drip proof, standard hp base. Select motor size so that the motors are not overloaded at any point on the pump performance curve. Motor shall be designed for 40 degrees C (104 degrees F) ambient temperature. Receiver Tank: Drawings will show when an existing sump or receiver is to be reused. Unless otherwise noted, a new receiver is required. New receiver shall be vertical, cylindrical, cast iron sides and bottom, designed for service underground or below the floor. Receiver capacity and size shall be as shown. Locate inlet connection 225 mm (9 inches) below the cover plate. Receiver Cover Plate: Heavy gauge steel designed to support weight of pumps, motors, and accessories with no deflection. Cover plate shall include provisions for mounting of pumps, motors and accessories by bolting and shall be designed to allow easy removal of same. Provide threaded or flanged openings for piping connections. Openings for pipe sizes above 50 mm (2 inches) must be flanged. Cover plate shall be designed to fit new or existing receiver tank or sump as shown. Provide bolted inspection plate for viewing interior of receiver. All bolted connections to cover plate and between cover plate and receiver shall be gasketed so that no vapor will escape into the room. Controls: Pump Operation: Provide float switches mounted on receiver cover plate to start and stop the pumps in response to changes in the water level in the receiver. Float rod penetrations of the receiver cover plate shall be sealed to prevent the escape of vapor. Floats and connecting rods shall be copper, stainless steel or bronze. When a duplex pump unit is required, provide an alternator and a control to automatically start the second pump, when the first pump fails in keeping the receiver water level from rising. Starters: Provide combination magnetic starters with fusible disconnect switches or circuit breakers. Provide low voltage control circuits (120-volt maximum). Indicating Lights: Provide red light for each pump to show that the pump is running, green lights to show power is on. Manual Selector Switches: Provide "on-off-automatic" switch for each pump.
at 690 kPa (100 psig). Pipe relief vents to receiver tank. Relief valve capacity shall equal or exceed pump capacity at set pressure. Electric Motors: Open drip proof, standard hp base. Select motor size so that the motors are not overloaded at any point on the pump performance curve. Motor shall be designed for 40 degrees C (104 degrees F) ambient temperature. Receiver Tank: Drawings will show when an existing sump or receiver is to be reused. Unless otherwise noted, a new receiver is required. New receiver shall be vertical, cylindrical, cast iron sides and bottom, designed for service underground or below the floor. Receiver capacity and size shall be as shown. Locate inlet connection 225 mm (9 inches) below the cover plate. Receiver Cover Plate: Heavy gauge steel designed to support weight of pumps, motors, and accessories with no deflection. Cover plate shall include provisions for mounting of pumps, motors and accessories by bolting and shall be designed to allow easy removal of same. Provide threaded or flanged openings for piping connections. Openings for pipe sizes above 50 mm (2 inches) must be flanged. Cover plate shall be designed to fit new or existing receiver tank or sump as shown. Provide bolted inspection plate for viewing interior of receiver. All bolted connections to cover plate and between cover plate and receiver shall be gasketed so that no vapor will escape into the room. Controls: Pump Operation: Provide float switches mounted on receiver cover plate to start and stop the pumps in response to changes in the water level in the receiver. Float rod penetrations of the receiver cover plate shall be sealed to prevent the escape of vapor. Floats and connecting rods shall be copper, stainless steel or bronze. When a duplex pump unit is required, provide an alternator and a control to automatically start the second pump, when the first pump fails in keeping the receiver water level from rising. Starters: Provide combination magnetic starters with fusible disconnect switches or circuit breakers. Provide low voltage control circuits (120-volt maximum). Indicating Lights: Provide red light for each pump to show that the pump is running, green lights to show power is on. Manual Selector Switches: Provide "on-off-automatic" switch for each pump.