To Next Page

To Previous Page

Form no.: L453147GB– revision 06/2013

7. Service and maintenance

7.1 Checking the shaft seal

Checkthepump'sshaftsealforleaksonaregularbasis.Iftheshaft

sealisleaking,replaceitoritsrelevantpartsasdescribedbelow.

7.2 Replacing the shaft seal

Thesectionaldrawing(page3)showsthepositionandconstruction

oftheshaftseal(applyingbothtoordinarysealsandsealswith

liquid/steamushing).

Toreplacetheshaftsealitisnecessarytodismantlethepump.

Followthestepsdescribedbelowandrefertothesectional

drawing(page3).

1. Disconnectthepowersupplyinthemotorisolatorbyremoving

thefusesanddisconnectingthecables.

2. Turnoffthesteamandushingliquidsupply.

3. Closethepumpsuctionanddischargepointanddrainthepump

housing.Ifthepumpisusedforhotand/oraggressiveliquids,

specialprecautionsmustbetaken.Insuchcases,observethe

localregulationsforpersonalprotectionwhenworkingwiththese

products.

4. Opentheclampring(item9a)orthehousingscrewsoncetheinlet

and outlet pipes have been properly isolated.

Dismantlethepumphousing(item1a,1b)andremovetheimpeller

(item4).

5. Takethestationarysealface(item5.6)installedinthebackplate

(item7a,7b)outwithyourngers.

6. Removetheo-ring(item5.5)fromthestationarysealface.

7. Useyourngerstoremovetherotarysealface(item5.7)ttedin

theimpeller(item4).

8. Removetheo-ring(item5.5)fromtherotarysealface.

9. Cleanthechambersofthestationaryandrotarysealfacewithair

or water.

9a Therearstationarysealface(item5.6)ismountedonthepressure

ring*(item5.11).Therotarysealface(item5.7)ismountedonthe

shaft(item11).Theseareremovedinthesamewayasthefront

sealcomponents.

*TheW+50/600pumphas2identicalpressurerings.

Dismantling the pump

Dismantling the shaft seal

APV

APV W+ Series User Manual

Other manuals for APV W+ Series