Gorman-rupp-pumps 81 1/4B3-E.33 1P 24971 and up Manuel d'utilisateur

OM−00793−03February 25, 1981Rev. B 01-21-10ACDEGWTHE GORMAN-RUPP COMPANY  MANSFIELD, OHIOwww.grpumps.comGORMAN-RUPP OF CANADA LIMITED  ST. THOMAS,

80 SERIES OM−00793PAGE B − 3INSTALLATIONmum use of elbows and fittings, which substan-tially increase friction loss. If elbows are necessary,use the l

OM−00793 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−00793PAGE B − 5INSTALLATIONBypass LinesIf a system check valve is used due to high dis-charge head, it may be necessary to vent trappedai

OM−0079380 SERIESOPERATION PAGE C − 1OPERATION − SECTION CReview all SAFETY information in Section A.Follow the instructions on all tags, labels andde

OM−00793 80 SERIESOPERATIONPAGE C − 2Lines Without a BypassOpen all valves in the discharge line and start themotor. Priming is indicated by a positiv

OM−0079380 SERIESOPERATION PAGE C − 3After stopping the pump, disconnect the incomingpower to the motor and lock it out to ensure that thepump will re

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−0079380 SERIESTROUBLESHOOTING PAGE D − 3PREVENTIVE MAINTENANCESince pump applications are seldom identical, andpump wear is directly affected by su

80 SERIES OM−00793MAINTENANCE & 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−00793MAINTENANCE & REPAIRPAGE E − 2SECTION DRAWINGPARTS PAGEMOTOR END VIEWFigure 1. Pump Model 81 1/4B3−E.33 1P

80 SERIES OM−00793MAINTENANCE & REPAIR PAGE E − 3PARTS LISTPump Model 81 1/4B3−E.33 1P(From S/N 24971 Up)If your pump serial number is followed by

80 SERIESOM−00793MAINTENANCE & REPAIRPAGE E − 4PUMP AND SEAL DISASSEMBLYAND REASSEMBLYReview all SAFETY information in Section A.Follow the instru

OM−0079380 SERIESMAINTENANCE & REPAIR PAGE E − 5Seal Removal(Figures 1 and 2)Remove the seal spring.Apply oil to the seal area of the shaft and wo

80 SERIESOM−00793MAINTENANCE & REPAIRPAGE E − 6PUMP CASINGMOTORSHAFTSTATIONARYSEATSTATIONARYELEMENTROTATINGELEMENTDRIVE BANDIMPELLERSHIMSIMPELLERS

OM−0079380 SERIESMAINTENANCE & REPAIR PAGE E − 7Suction Flap Valve Reassembly andInstallationIf the suction flap valve was disassembled, securethe

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−00793PAGE I − 1INTRODUCTIONINTRODUCTIONThank You for purchasing a Gorman-Rupp pump.Read this manual carefully to learn how to safelyinstal

80 SERIESOM−00793PAGE A − 1SAFETYSAFETY - SECTION AThis information applies to 80 Serieselectric motor driven pumps. Refer tothe manual accompanying t

80 SERIESOM−00793PAGE A − 2 SAFETYthe applicable local code, the Nationalor local code shall take precedence.The electrical power used to operatethis

80 SERIES OM−00793PAGE B − 1INSTALLATIONINSTALLATION − SECTION BReview all SAFETY information in Section A.Since pump installations are seldom identic

OM−00793 80 SERIESPAGE B − 2 INSTALLATIONing, check for loose hardware at mating sur-faces.c. Carefully read all tags, decals, and markingson the pump