Johnson Pump TG GS2-25 - External Cleaning; Electrical Installation; Draining of Fluid; Fluid Circuits

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A.0500.501 – IM-TGGS/05.01 EN (03/2013)
3.21.2.6 External cleaning
• Keepthesurfaceofthepumpascleanaspossible.Thissimpliesinspection,theattached
markings remain visible and grease nipples are not forgotten.
• Makesurecleaningproductsdonotentertheballbearingspace.Coverallpartsthatmustnot
come into contact with fluids. In case of sealed bearings, cleaning products must not attack
rubber gaskets. Never spray the hot parts of a pump with water, as certain components may
crack due to the sudden cooling and the fluid being pumped may spray into the environment.
3.21.2.7 Electrical installation
• Maintenanceoperationsontheelectricinstallationmaybeperformedonlybytrainedand
qualified personnel and after disconnecting the electric power supply. Carefully follow the
national safety regulations.
Respect the above-mentioned regulations if performing work while the power supply is still
connected.
• Checkifelectricaldevicestobecleanedhaveasufcientdegreeofprotection(e.g.IP54means
protection against dust and splashing water but not against water jets). See EN 60529. Choose
an appropriate method for cleaning the electrical devices.
• Replacedefectivefusesonlywithoriginalfusesoftheprescribedcapacity.
• Aftereachmaintenancesessioncheckthecomponentsoftheelectricalinstallationforvisible
damage and repair them if necessary.
3.21.2.8 Draining of fluid
• Closeoffthepressureandsuctionlinesascloseaspossibletothepump.
• Iftheuidbeingpumpeddoesnotsolidify,letthepumpcooldowntotheambient
temperature before drainage.
• Foruidsthatsolidifyorbecomeveryviscousatambienttemperature,itisbesttoemptythe
pump immediately after shutting down by separating it from the piping. Always wear safety
goggles and gloves.
• Protectyourselfwithaprotectivecap.
The fluid may spray out of the pump.
• OpentheventingplugsBeandBb.
• Ifnodrainlineisprovided,
take precautions so that the liquid is
not contaminating the environment.
• OpenthedrainplugBaatthebottom
of the pump housing.
• Letdraintheliquidbygravity.
• Purgepumpspaceswithushmediaor
cleaning liquid by connecting a purge
system to the following inlet openings:
- Ba, Be: the displacement part
- Ba, Bb: space behind rotor
- Ba, Bd: space behind bearing bush and first mechanical
seal in case of GS shaft sealing versions
• Re-assembletheplugsandclosethevalves,ifany.
3.21.2.9 Fluid circuits
• Depressurizethejacketsandtheretaininguidcircuits.
• Uncoupletheconnectionstothejacketsandtothecirculatingorush/quenchmediacircuits.
• Ifnecessary,cleanthejacketsandthecircuitswithcompressedair.
• Avoidanyleakageofuidorthermaloilintotheenvironment.