Desmi H Series Operation And Maintenance Instructions

Contents

Desmi H Series Operation And Maintenance Instructions Manual pdf 8 page image

______________________________________________________________________________DESMI Pumping Technology A/S 8Tagholm 19400 Nørresundby – DenmarkTel: +45 96 32 81 11 Fax: +45 98 17 54 99E-mail: desmi@desmi.comwww.desmi.com6.2 FITTING SHAFT WITH BEARINGSLead shaft with bearings into the bearing housing. Fit sunk key (16).6.3 FITTING WATER DEFLECTORAssemble the bearing housing and the shaft seal cover. Lead the water deflector over theshaft until it touches the shaft seal cover and then further 1-1.5 mm into the shaft seal cover.6.4 FITTING SHAFT SEALBefore fitting the seat, clean the recess in the shaft seal cover. When fitting the seat, removethe protective coating without scratching the lapped surface. Dip the outer rubber ring of theseat intoolive oil (or another neutral oil). Now press the seat into place with the fingers and check thatall parts are correctly imbedded. If it is necessary to use tools for assembling, then protectthe sliding surface of the seat to prevent it from being scratched or cut. Lubricate the innerdiameter of the slide ring rubber bellows with olive oil and push it over the shaft. The use ofa fitting bush as shown on the assembly drawing is recommended to avoid that the rubberbellows is cut. Push the slide ring over the shaft with the hand. If the rubber bellows is tight,use a fitting tool and take care that the slide ring is not damaged.If the carbon ring is not fixed, it is important to check that it is fitted correctly, i.e. thechamfered/lapped side is to face the seat. The carbon ring can be held by a little grease.When using oil on the shaft, the bellows will settle and seat in about 15 minutes, and untilthen tightness should not be expected. After start, check by viewing the leak hole that thereare no leaks.6.5 FITTING IMPELLERFit the sunk key in the shaft and lead the impeller towards the shoulder of the shaft. Takecare that the ring at the end of the shaft seal spring locates in the recess of the impeller.Secure the impeller with a washer and a nut.6.6 FITTING BEARING HOUSING AND SHAFT SEAL COVERPlace the gasket between pump casing and shaft seal cover on the shaft seal cover where itcan be held with a little grease. Fit and fasten bearing housing with shaft seal cover. Checkthat the drain passage for the shaft seal faces downwards.6.7 SHAFTWhen the pump has been assembled, check that the shaft rotates freely.