MG200 SERIES - Pentair Water Literature
Contents
1. Turn pump on side and turn impeller using screwdriver in slotted shaft Plug pump into receptacle to test operation Pump must run quietly and free of vibration WIRING DIAGRAM MARATHON BLACK SCREW ON MOTOR END BELL LINE 2 WHITE cr S GROUND GREEN gt RUN CAPACITOR CZJ INSULATED TERMINALS NON INSULATED TERMINALS TROUBLESHOOTING GUIDE Pump does not run or hum See A B C D E or F Pump runs but does not deliver water See G H J Kor L Pump runs and pumps out sump but does not stop See M Pump runs but delivers only small amount of water See l J K Lor N Fuse blows or circuit breaker trips when pump starts See K L N OorP Motor runs for short time then stops Then after short period starts again Indicates tripping overload caused by symptom shown See K L Nor P For any other symptoms contact a Myers authorized service facility Line circuit breaker may be off or fuse if used may be blown or loose Water level in sump may be too low Run in more water Pump cord plug may not be making contact in receptacle If pump is using the series cord plug the two plugs may not be plugged tightly together Float may be stuck Be sure float operates freely in basin Check tether length of switch If all symptoms check OK motor winding may be ope2. replace a cord simply unscrew turn counterclockwise cord nut from top of motor housing Once cord nut is completely loosened from housing gently pull cord upward away from housing While cord is being pulled it may be necessary to shift cord leads back and forth to guide the insulated terminals through the hole in the motor housing Once the terminals have cleared the hole gently pull cord until terminals are completely outside motor housing Then simply disconnect terminals to remove cord To install new cord reconnect terminals black to black white to white green to green and guide terminals back through hole in motor housing Once terminals have passed through the hole retighten the cord nut into housing Tighten nut firmly but do not overtighten The power cord should be replaced if it has been damaged in any way or the cord jacket has become brittle MOTOR TYPE The MG200 Series grinder pump contains a 3 4 frame 2 hp single phase 60 Hz 3450 rpm capacitor start capacitor run motor with Class F insulation and built in on winding overload protection Motor has upper and lower ball bearings and is oil cooled and lubricated A CAUTION THE MG200 SERIES GRINDER PUMP SHOULD NEVER BE WORKED ON WITHOUT FIRST DISCONNECTING THE POWER CORD OIL TYPE The motor housing contains dielectric transformer oil to provide good heat transfer and lubrication of ball bearings no other lubrication is required Oil level may
3. MYERS PARKWAY 490 PINEBUSH ROAD UNIT 4 ASHLAND OHIO USA 44805 CAMBRIDGE ONTARIO CANADA NIT 0A5 419 289 1144 800 363 PUMP WWW FEMYERS COM Warranty Rev 12 13
4. gt PENTAIR MYERS MGZUU SERIES GRINDER PUMPS INSTALLATION AND SERVICE MANUAL 2 HP Grinder Pump for Residential and Pressure Sewer Applications U E NOTE To the installer Please make sure you provide this manual to the owner of the equipment or to the responsible party who maintains the system Part 23833A664 O 2015 Pentair Ltd 02 09 15 USAGE The MG200 Series is a submersible wastewater grinder pump designed specifically for individual residential and pressure sewer applications The pumps are to be used for domestic sewage only and are not to be used for pumping commercial or industrial sewage such as from motels schools apartments factories etc THIS PUMP IS NOT FOR USE IN HAZARDOUS LOCATIONS INSPECTING PUMP Before making any piping or electrical connections check the pump for shipping damage or cracks Using a flat screwdriver placed in the slot on the shaft end turn shaft and impellers to be sure they are free DO NOT TURN IMPELLER WITH FINGERS AS EDGES ARE SHARP POWER SUPPLY The MG200 Series grinder pump should be connected only to a 230 volt single phase 60 Hz power source The pump will draw approximately 9 1 amperes at minimum flow and 15 0 full load amperes The pump must be connected to a grounded power socket DO NOT cut off the ground pin from the power cord plug POWER CORD A 20 foot power cord is attached to the grinder pump via three insulated quick disconnect terminals To
5. shredding ring as described above and remove bolts from volute case and remove case Plastic hammer can be used to bump on casing discharge to loosen Place gasket in oil to prevent drying out DO NOT loosen the pump impeller further it is the seat for the seal spring 7 After case is removed wrap emery paper around shaft and hold with vice grip pliers Use cloth on impeller and screw up against shoulder Now pump can be reassembled 8 Clean all threads with wire brush and file smooth any threads that may have been nicked 9 Use Never Seez or other graphite compound on threads before replacing grinding impeller 10 Be sure cap screw in bottom of shaft is tight Hold impeller with a screwdriver between cutter bar and teeth of shredding ring while tightening cap screw 11 Be sure impeller turns freely by hand after reassembly Some drag will occur due to the seal but there should be no binding or tight spots when turning the grinder impeller 12 If impeller rubs or drags on shredding ring loosen bolts in shredding ring plate and tap with plastic hammer to loosen retighten screws Be sure to pull screw down evenly applying pressure on all three screws DO NOT TIGHTEN ONE SCREW CLEAR DOWN BEFORE ADJUSTING OTHER SCREWS 13 ALWAYS use a rag on the impeller when turning to prevent cutting hands on the sharp corners of shredding ring TO REPLACE CAPACITORS ONLY 1 Remove oil fill plug near the top of motor housing and
6. ING RING All repairs must be done at the factory or at an authorized Myers service facility A CAUTION DISCONNECT ALL POWER AND CONTROL WIRES TO MOTOR AT CONTROL PANEL BEFORE STARTING DISASSEMBLY OPERATIONS NEVER RELY ON OPENING CIRCUIT BREAKER ONLY DISASSEMBLY OF SHREDDING RING AND GRINDER IMPELLER 1 Remove three screws from grinder ring flange Grinder ring is pressed into flange for easy removal 2 Using Allen head socket wrench thread two screws into tapped back off holes in flange Evenly tighten screws to guide grinding ring out of pump volute case 3 Hold grinder impeller by prying against impeller cutting bar and remove cap screw from end of shaft 4 Use large screwdriver in slot in end of shaft and bump on cutter vane with plastic hammer Bump in counterclockwise direction as thread is right hand It may take several bumps to loosen impeller DO NOT CONTINUE TO POUND ON IMPELLER AS IMPELLER AND SHAFT MAY BE DAMAGED 5 If impeller comes off easily clean and replace if worn 6 Be sure pump impeller has not loosened when grinder impeller is removed This can be checked on reassembly of grinder impeller and shredding ring Tips of impeller cutter vanes should extend about 1 8 below bottom of shredding ring If distance is more it means the pump impeller has loosened and if it is less it means the shredding ring is not properly seated If the pump impeller has loosened remove grinder impeller and
7. SST 07597A018 SCREW FLAT HEAD 1 4 x 3 4 LONG 25338B001 CORD POWER 21582B000 IMPELLER GRINDING 05013A039 SCREW SET 1 4 x 3 8 LONG 2 REQ D 26434C010 IMPELLER PUMP PLASTIC MG200 26434C000 IMPELLER CAST IRON OPTIONAL MG200 22640C013 IMPELLER DUCTILE IRON MGH200 26434C060 IMPELLER PLASTIC MG200F 26430D001 PLATE SEAL BEARING 05014A181 GASKET TETRASEAL 7 x 6 3 4 x 1 8 25327D000 HOUSING MOTOR 19100A012 SCREW CAP 5 16 x 1 1 4 LONG 8 REQ D 21576A010 SEAL 7 8 SHAFT 26466C200 MOTOR 230V 16 2 HP 05022A092 PLUG PIPE 1 4 NPT 05030A235 WASHER SST 3 32 THICK 05014A193 GASKET RUBBER 05030A234 WASHER SST 1 32 THICK 25341A002 NUT SOLID 145700041 RUN CAPACITOR 12141A000 START CAPACITOR THIS PAGE INTENTIONALLY LEFT BLANK STANDARD LIMITED WARRANTY Pentair Myers warrants its products against defects in material and workmanship for a period of 12 months from the date of shipment from Pentair Myers or 18 months from the manufacturing date whichever occurs first provided that such products are used in compliance with the requirements of the Pentair Myers catalog and technical manuals for use in pumping raw sewage municipal wastewater or similar abrasive free noncorrosive liquids During the warranty period and subject to the conditions set forth Pentair Myers at it
8. al codes ordinances and good trade practices le if the unit is moved from its original installation location f if unit is used for purposes other than for what it is designed and manufactured g to any unit that has been repaired or altered by anyone other than Pentair Myers or an authorized Pentair Myers service provider h to any unit that has been repaired using non factory specified OEM parts Warranty Exclusions PENTAIR MYERS MAKES NO EXPRESS OR IMPLIED WARRANTIES THAT EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF PENTAIR MYERS SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE Liability Limitation IN NO EVENT SHALL PENTAIR MYERS BE LIABLE OR RESPONSIBLE FOR CONSEQUENTIAL INCIDENTAL OR SPECIAL DAMAGES RESULTING FROM OR RELATED IN ANY MANNER TO ANY PENTAIR MYERS PRODUCT OR PARTS THEREOF PERSONAL INJURY AND OR PROPERTY DAMAGE MAY RESULT FROM IMPROPER INSTALLATION PENTAIR MYERS DISCLAIMS ALL LIABILITY INCLUDING LIABILITY UNDER THIS WARRANTY FOR IMPROPER INSTALLATION PENTAIR MYERS RECOMMENDS INSTALLATION BY PROFESSIONALS Some states do not permit some or all of the above warranty limitations or the exclusion or limitation of incidental or consequential damages and therefore such limitations may not apply to you No warranties or representations at any time made by any representatives of Pentair Myers shall vary or expand the provision hereof gt PENTAIR MYERS 1101
9. be checked by removing the nut and washers from the top of the motor housing The oil level should be filled to the bottom of the end shield Do not overfill with oil Only dielectric transformer oil obtained from a Myers authorized service center should be used PUMP SWITCH INSTALLATION INSTRUCTIONS NOTE In accordance with third party approval pump must be submerged a minimum of 8 1 2 from bottom of the legs on volute case during operation Mounting the Switch 1 Determine pumping range for installation Do not tether less than 3 1 2 from pipe 2 Tighten strap around discharge pipe keeping switch cable between strap and pipe to prevent slippage 3 Space small ties at least 1 apart To readjust ties press small tie tabs down 4 To lock releasable tab run remaining strap between tab and head Tuck strap back through head Piggyback Plug Install A Electrical outlet must not be located in pump chamber A Electrical outlet voltage piggyback plug voltage and pump voltage must match 1 Follow steps 1 through 4 of Mounting the Switch 2 Insert switch s piggyback plug into outlet 3 Plug pump into piggyback plug 4 Check installation Allow system to cycle to ensure proper operation Direct Wire Install 1 Follow steps 1 through 4 of Mounting the Switch 2 Further wiring of switch should be done by qualified professionals only 3 Check installation Allow system to cycle to ensure prop
10. er operation junction box liquid tight connector In 230 VAC pump installations one side of the line going to the pump is always HOT This condition exists if the switch is on or off Install double pole disconnect on all 230 VAC pump circuits SAFETY WARNINGS A WARNING Risk of electrical shock Pumps are supplied with a grounding conductor and grounding type attachment plug on the power cord except MG200 21L P To reduce the risk of electrical shock be certain that it is connected only to properly grounded grounding type receptacle DO NOT cut off ground pin or use an adapter fitting DO NOT use an extension cord with this pump When wiring this pump follow all local electrical safety codes and ordinances as well as most recent National Electric Code NEC ANSI NFPA The MG200 Series grinder pumps have a GROUND WIRE that is connected to a screw in the metal motor housing This wire goes to the receptacle or control box which must be connected to a good outside GROUND such as a metal water pipe or GROUND STAKE driven at least 8 feet into the ground CALIFORNIA PROPOSITION 65 WARNING AWARNING This product and related accessories contain chemicals known to the State of California to cause cancer birth defects or other reproductive harm DISMANTLING PUMP FOR REPLACEMENT PARTS Before dismantling pump for replacement parts clean pump thoroughly REPLACING GRINDER IMPELLER AND GRINDER SHREDD
11. n take to service center for repair Check valve may be installed backward Arrow on valve points in direction of flow Discharge shut off valve if used may be closed Pump may be air locked Start and stop several times by plugging and unplugging cord Check vent hole on pump case for plugging Pump head may be too high Horizontal distance does not affect pumping except loss due to friction Inlet holes in pump base may be clogged Remove pump and clean out openings Impeller or volute openings may be plugged or partially plugged Remove pump and clean Check tether length of switch Float is stuck in up position Be sure float operates freely in basin Pump impeller may be partially clogged causing motor to run slow resulting in motor overload Fuse size or circuit breaker is too small Must be 20 amps Defective motor stator Return to Myers service center 15 MOTOR END PARTS yA Le A EZ A ZZ COMMON PARTS LIST For use with product built with Marathon motor Part Number Description 26433D002 CASE VOLUTE 21584B000 FLANGE W SHREDDING RING MG200 21584B002 FLANGE W SHREDDING RING MGH200 21584B004 FLANGE W SHREDDING RING MG200F 190994012 SCREW CAP 1 4 x 1 LONG SST 3 REQ D 21583B000 RETAINER IMPELLER
12. pour oil out 2 Loosen the cord nut on power cord until cord is loose enough to push cord down into motor housing 3 Remove four bolts from motor housing and bump housing with a plastic hammer to loosen Lay pump on its side 4 Remove the housing carefully to be sure that enough cord is pushed into the housing so as not to create tension on cord WIRING DIAGRAM AO SMITH PROTECTOR SENSATA TECHNOLOGIES TYPE 15HM2412 WHITE RUN START CAPACITOR CAPACITOR Es e RED U ee BLUE 20 uF 324 pF 389 uF 125V 370V MAIN BROWN BLACK YELLOW ORANGE PHASE 5 Slide motor housing up far enough to expose the capacitors and to be able to lay the housing down 6 Disconnect wiring from capacitor and loosen capacitor clamp and slide capacitor out Replace with new capacitor tighten clamp and reconnect 7 Check all wiring connectors to be sure they are secure 8 Be sure tetraseal gasket is in place 9 Slide motor housing back onto pump while pulling the cord out slowly Assemble motor housing with four bolts 10 Reassemble cord nut Be sure washers are seated and cord is pulled up against the washers Tighten nut securely 11 Put pump upright and refill motor with Myers submersible pump oil DO NOT OVERFILL WITH OIL Reassemble washer gasket and nut in motor housing Retighten nut firmly but do not overtighten 12 Be sure pump turns freely before connecting power
13. s discretion will repair or replace to the original user the parts that prove defective in materials and workmanship Pentair Myers reserves the right to change or improve its products or any portions thereof without being obligated to provide such a change or improvement for prior sold and or shipped units Start up reports and electrical schematics may be required to support warranty claims Submit at the time of start up through the Pentair Myers website http forms pentairliterature com startupform startupform asp type m Warranty is effective only if Pentair Myers authorized control panels are used All seal fail and heat sensing devices must be hooked up functional and monitored or this warranty will be void Pentair Myers will cover only the lower seal and labor thereof for all dual seal pumps Under no circumstance will Pentair Myers be responsible for the cost of field labor travel expenses rented equipment removal reinstallation costs or freight expenses to and from the factory or an authorized Pentair Myers service facility This limited warranty will not apply al to defects or malfunctions resulting from failure to properly install operate or maintain the unit in accordance with the printed instructions provided b to failures resulting from abuse accident or negligence c to normal maintenance services and parts used in connection with such service d to units that are not installed in accordance with applicable loc
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