MYERS SX50 Installation And Service Manual Download | Manualshive

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23833A465 03/10

SX50/SX50H

Sump Pumps

Used in Hazardous Locations Class 1, Division 1, Group D

Installation and Service Manual

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Summary of Contents for SX50

Page 1: ...23833A465 03 10 SX50 SX50H Sump Pumps Used in Hazardous Locations Class 1 Division 1 Group D Installation and Service Manual ...

Page 2: ...ns or any installation where human contact with the pumped fluid is common 21 Do not operate pump without safety devices in place 22 For hazardous locations use pumps that are listed and classified for such locations IMPORTANT Myers is not responsible for losses injury or death resulting from a failure to observe these safety precautions misuse or abuse of pumps or equipment GENERAL INFORMATION Pu...

Page 3: ... due to an overheat condition it will not start until the motor has cooled and the heat sensor reset button is manually pushed on the front of the Myers control panel This circuitry is provided in the Myers control panel designs The SX50 SX50H pumps are equipped with internal thermostats The SX50 SX50H models are designed to meet Class B heat rise of 266 F 130 C Note Failure to use proper circuitr...

Page 4: ...d required for hazardous locations An intrinsically safe control panel relay will limit the current and voltage to the level controls A Myers control panel can be supplied with this type circuitry The float level controls maintain the basin sewage water level by controlling pump turn on and turn off levels 1 The lower turn off control should be set so that the pump stops with the water covering th...

Page 5: ...age Brush new dielectric oil around the rubber portion of the stationary assembly and into the pocket in the seal housing Note keep the oil off the seal face Without scratching the seal face press the ceramic stationary portion into the seal housing A piece of PVC pipe that fits onto the face of the seal works well for installation With clean cloth lightly wipe the face of the seal surface to make...

Page 6: ...SX50 DIMENSIONS Dimensions in mm SX50H DIMENSIONS Dimensions in mm FIG 1 23833A465 6 ...

Page 7: ...SX50 PUMP PARTS FIG 2 23833A465 7 ...

Page 8: ...SX50H PUMP PARTS FIG 3 23833A465 8 ...

Page 9: ...65A013 16 RING RETAINING 1 11816A006 11816A006 17 ROTOR W SHAFT 1Ø 1 26859C101X 26859C101X ROTOR W SHAFT 3Ø 1 26859C104X 26859C104X 18 BEARING BALL LOWER 1 08565A018 08565A018 19 HOUSING UPPER SEAL 1 21574D100X 21574D100X 20 SEAL SHAFT 2 21576A010 21576A010 21 RING RETAINING 1 12558A006 12558A006 22 ELECTRODE W RESISTOR 1 22578A003 22578A003 23 O RING 6 1 8 x 5 7 8 x 1 8 2 05876A125 05876A125 24 F...

Page 10: ... x x 23833A465 10 WIRING DIAGRAMS FIG 6 CORD CONNECTORS NOTE All components shown must be approved for hazardous locations ...

Page 11: ...23833A465 11 WIRING SCHEMATIC FOR 230V 1Ø SIMPLEX SYSTEM FIG 7 ...

Page 12: ...8 WIRING SCHEMATIC FOR 230V 3Ø DUPLEX SYSTEM X Z NOTES 1 Level switches must be rated a minimum of 2 amps 120V 2 Torque all white field wiring terminals to 8 in lbs 3 Field wiring must be 60 C copper wire minimum 4 items not supplied in panel ...

Page 13: ...MATIC FOR 230V 3Ø SIMPLEX SYSTEM NOTES 1 Level switches must be rated a minimum of 2 amps 120V 2 Torque all white field wiring terminals to 8 in lbs 3 Field wiring must be 60 C copper wire minimum 4 items not supplied in panel ...

Page 14: ...MATIC FOR 460V 3Ø SIMPLEX SYSTEM NOTES 1 Level switches must be rated a minimum of 2 amps 120V 2 Torque all white field wiring terminals to 8 in lbs 3 Field wiring must be 60 C copper wire minimum 4 items not supplied in panel ...

Page 15: ...e only at an authorized service station Note readings should be taken with line leads disconnected from the control panel Resistance of Windings Every motor winding has a fixed resistance The windings must check close to the values given in the tables to operate properly See the motor electrical data chart Figure 4 Use an ohmmeter and set to the one ohm scale Read the resistance with the motor lea...

Page 16: ...en with control box before pulling pump 2 If this condition happens after an electrical storm motor or control box may be damaged by lightning 3 Resistance reading of the motor with lead wires disconnected from the control box can determine if trouble is in motor or control box 1 Impeller may be partially clogged with some foreign objects causing noise and overload on the motor 1 Lower control swi...

Page 17: ...23833A465 NOTES ...

Page 18: ...V OLPLWHG ZDUUDQW ZLOO QRW DSSO D WR GHIHFWV RU PDOIXQFWLRQV UHVXOWLQJ IURP IDLOXUH WR SURSHUO LQVWDOO RSHUDWH RU PDLQWDLQ WKH XQLW LQ DFFRUGDQFH ZLWK WKH SULQWHG LQVWUXFWLRQV SURYLGHG E WR IDLOXUHV UHVXOWLQJ IURP DEXVH DFFLGHQW RU QHJOLJHQFH F WR QRUPDO PDLQWHQDQFH VHUYLFHV DQG SDUWV XVHG LQ FRQQHFWLRQ ZLWK VXFK VHUYLFH G WR XQLWV ZKLFK DUH QRW LQVWDOOHG LQ DFFRUGDQFH ZLWK DSSOLFDEOH ORFDO FRGHV ...

Page 19: ......

Page 20: ...______________________________ D Incoming line voltage _________________________ Actual _____________________________ E Voltage to pumps ____________________________ Actual _____________________________ F Type of junction box _____________________________ Manufacturer _______________________ G Are floats installed in wet well _______________________________________________________ H Are floats set...

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