Gorman-rupp-pumps 81 1/2D3-E.50 3P 262113 and up Bedienungsanleitung

OM−00751−08January 23, 1980Rev. B 02-25-10ACDETHE GORMAN-RUPP COMPANY  MANSFIELD, OHIOwww.grpumps.comGORMAN-RUPP OF CANADA LIMITED  ST. THOMAS, ONT

80 SERIES OM−00751PAGE B − 3INSTALLATIONmum use of elbows and fittings, which substan-tially increase friction loss. If elbows are necessary,use the l

OM−00751 80 SERIESPAGE B − 4 INSTALLATIONtance equal to at least 3 times the diameter of thesuction pipe.Suction Line PositioningThe depth of submerge

80 SERIES OM−00751PAGE B − 5INSTALLATIONBypass LinesIf a system check valve is used due to high dis-charge head, it may be necessary to vent trappedai

OM−0075180 SERIESOPERATION PAGE C − 1OPERATION − SECTION CReview all SAFETY information in Section A.Follow the instructions on all tags, labels andde

OM−00751 80 SERIESOPERATIONPAGE C − 2OPERATIONLines With a BypassClose the discharge throttling valve (if soequipped) so that the pump will not have t

OM−0075180 SERIESOPERATION PAGE C − 3STOPPINGNever halt the flow of liquid suddenly. If the liquidbeing pumped is stopped abruptly, damagingshock wave

TROUBLE POSSIBLE CAUSE PROBABLE REMEDYPUMP FAILS TOPRIMEStrainer clogged. Check strainer and clean if neces-sary.Suction lift or discharge head too hi

TROUBLE POSSIBLE CAUSE PROBABLE REMEDYPUMP STOPS ORFAILS TO DELIVERRATED FLOW ORPRESSURE (cont.)PUMP REQUIRESTOO MUCHPOWERPUMP CLOGSFREQUENTLYFree imp

OM−0075180 SERIESTROUBLESHOOTING PAGE D − 3PREVENTIVE MAINTENANCESince pump applications are seldom identical, andpump wear is directly affected by su

80 SERIES OM−00751MAINTENANCE & REPAIR PAGE E − 1PUMP MAINTENANCE AND REPAIR - SECTION EMAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WI

Register your newGorman-Rupp pump online atwww.grpumps.comValid serial number and e-mail address required.RECORD YOUR PUMP MODEL AND SERIAL NUMBERPlea

80 SERIESOM−00751MAINTENANCE & REPAIRPAGE E − 2SECTION DRAWINGPARTS PAGEFigure 1. Pump Model 81 1/2D3−E.50 3P

80 SERIES OM−00751MAINTENANCE & REPAIR PAGE E − 3PARTS LISTPump Model 81 1/2D3−E.50 3P(From S/N 262113 Up)If your pump serial number is followed b

80 SERIESOM−00751MAINTENANCE & REPAIRPAGE E − 4PUMP AND SEAL DISASSEMBLYAND REASSEMBLYReview all SAFETY information in Section A.Follow the instru

OM−0075180 SERIESMAINTENANCE & REPAIR PAGE E − 5Apply oil to the seal area of the shaft and work it upunder the rubber bellows. Remove the hardwar

80 SERIESOM−00751MAINTENANCE & REPAIRPAGE E − 6SEAL PLATEIMPELLERSHAFTSTATIONARYSEATSTATIONARYELEMENTROTATINGELEMENTDRIVE BANDIMPELLERSHIMSIMPELLE

OM−0075180 SERIESMAINTENANCE & REPAIR PAGE E − 7Install the vane plate O-ring (12) and the pump cas-ing gasket (4). Carefully slide the pump casin

For U.S. and International Warranty Information,Please Visit www.grpumps.com/warrantyor call:U.S.: 419−755−1280International: +1−419−755−1352For Canad

TABLE OF CONTENTSiINTRODUCTION PAGE I − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAFETY - SE

TABLE OF CONTENTS(continued)iiPARTS LIST:Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

80 SERIESOM−00751PAGE I − 1INTRODUCTIONINTRODUCTIONThank You for purchasing a Gorman-Rupp pump.Read this manual carefully to learn how to safelyinstal

80 SERIESOM−00751PAGE A − 1SAFETYSAFETY - SECTION AThis information applies to 80 Serieselectric motor driven pumps. Refer tothe manual accompanying t

80 SERIESOM−00751PAGE A − 2 SAFETYThe electrical power used to operatethis pump is high enough to cause inju-ry or death. Obtain the services of a qu-

80 SERIES OM−00751PAGE B − 1INSTALLATIONINSTALLATION − SECTION BReview all SAFETY information in Section A.Since pump installations are seldom identic

OM−00751 80 SERIESPAGE B − 2 INSTALLATIONing, check for loose hardware at mating sur-faces.c. Carefully read all tags, decals, and markingson the pump