Multitech 1777.8/7-10 G3 operating instructions Description Product, Accessories

Page 6

 

 

 

 

 

 

 

 

Multitec

4

Description

of

the

product

and

4.2

Designation

A 32 / 8E - 2.1 12 . 65 (SP)

 

accessories

 

 

 

 

 

Multitec

 

 

 

 

 

Type series

 

 

4.1

Technical specification

 

 

 

Installation type / pump version

 

 

 

 

 

Discharge nozzle DN

 

 

 

 

 

 

 

 

 

 

Multistage centrifugal pumps in ring-section design with suction

No. of stages / impeller combination

 

impeller for low NPSH value (exception: MTC 32).

 

Hydraulic system

 

 

 

 

 

 

 

 

Material variant

 

 

 

 

 

Horizontal design, baseplate

 

Shaft seal code

 

 

 

 

 

mounted

 

 

Code for special variants (optional)

 

A

 

 

1 casing entry, drive end

 

 

 

 

 

 

 

1 rolling element bearing, drive end

4.3

Design details

 

 

 

 

1 plain bearing, suction end

 

 

 

 

 

 

axial suction nozzle

 

Pump type

 

 

 

 

 

 

 

 

 

 

 

 

 

for the entire H/Q range

 

High-pressure centrifugal pump in long-coupled (baseplate

 

 

 

same as installation type A, but

mounted) or close-coupled design, horizontal

or vertical

 

 

 

version, axial or radial suction nozzle. Radial suction and

 

 

 

radial suction nozzle

 

B

 

 

 

 

 

discharge nozzles can be turned by 90￿.

 

 

 

 

 

 

Bearings:

 

 

 

 

 

 

 

 

Radial bearings are silicon carbide plain bearings (not on

 

 

 

 

 

 

versions C and D), self-aligning. Plain bearings lubricated by

 

 

 

Horizontal design, baseplate

 

fluid handled. Fixed bearings are rolling element bearings,

 

 

 

mounted,

 

 

grease- or oil-lubricated.

 

 

C

 

 

2 casing entries, drive and suction

Shaft seals:

 

 

 

 

end

 

 

Uncooled gland packing; with or without barrier fluid.

 

 

2 rolling element bearings

 

 

 

 

drive on discharge side

 

Standardized mechanical seal (uncooled, cooled) to EN 12756.

 

 

 

for the entire H/Q range

 

Double-acting mechanical seal with standardized mechanical

 

 

 

 

seals to EN 12756 (back-to-back or tandem).

 

 

 

 

same as installation type C, but

 

 

 

 

Cartridge seals, special designs.

 

 

D

 

 

drive on suction side

 

Drive:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electric / hydraulic drives, Diesel engines or turbines up to max.

 

 

 

 

 

 

4000 1/min.

 

 

 

 

 

Horizontal close-coupled pump,

4.4

Applications

 

 

E

 

 

common bearing for pump and mo-

 

 

 

 

tor,

 

 

Municipal water supply: pumping stations, water treatment

 

 

 

rigid coupling,

 

and pressure boosting systems.

 

 

Ex

 

 

radial suction nozzle

 

 

 

 

 

 

Water treatment: filtration, reverse osmosis.

 

 

 

 

H/Q range: up to 100 m3/h, 25 bar

 

 

 

 

Pumps in industrial applications: general water supply, cold

F Fx

 

same as installation type E, but

water, washing systems, recycling, cooling circuits, boiler feed

 

axial suction nozzle

 

systems, hot water, superheated water, condensate handling,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

process, organic and inorganic liquids, degreasing agents,

 

 

 

Vertical close-coupled pump

 

washing or alkaline solutions,

lubricants, cooling, surface

 

 

 

 

treatment.

 

 

 

 

 

 

 

 

 

 

V

 

 

H/Q range: up to 204 m3/h 25 bar

Air-conditioning: large-scale

air-conditioning

systems,

 

 

 

up to 100 m3/h 40 bar

high-rise buildings

 

 

Vx

 

 

 

 

 

Irrigation: centre-pivot sprinkling systems, trickle irrigation

 

 

 

 

 

systems, square sprinkling systems, flood irrigation systems.

6

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Contents High-pressure pumps in ring-section design Operating instructions 1777.8/7-10 G3Works No Type series Multitec Contents Section Adjusting dimensions for coupling Multitec IndexSafety Multitec GeneralMultitec Transport, storageAccessories Description ProductInstalling the pump/unit Multitec Installation at siteFoundation / Checks to be carried out prior to installation Close-coupled pumpsThread Strength Drive Non-drive End Aligning the pump / drive Coupling guardBe tightened to the following torques Tightening torque 100 120 NmMax. permissible pipeline forces material codes 20 to Connecting the pipingMax. permissible pipeline forces material codes 10, 11, 12 Protection against foreign matterVacuum balance line Connection to power supplySetting the time relay Checking the direction of rotationMultitec Commissioning, start-up / Shutdown Shutdown Temperature of the fluid pumpedStart-up Gland packingMinimum flows Switching frequencyReturning to service after storage Density of fluid pumpedGeneral instructions Multitec Servicing / maintenanceBearings and lubrication PumpShaft seal Mechanical seal Oil quality / Oil changeMotor CouplingAxial suction nozzle Dismantling the bearingsDismantling the non-drive-end bearings Plain bearing Radial suction nozzleOil lubrication with labyrinth seal fig Grease lubrication figsOil lubrication with lip seal fig Grease lubricationReplacing the shaft protecting sleeve Removing a double-acting mechanical seal Intermediate bearing bush Intermediate bearing diffuser ReassemblyDismantling the hydraulic system With the rules of sound engineering practiceReassembly of hydraulic system Stuffing box housingSeals Gland packing Sealing elements Mechanical sealsHorizontal baseplate-mounted pump units Leakage at the mechanical sealTightening the shaft nuts on Multitec pumps Fixed bearing MTC 100/125/150Rolling element bearing sizes Grease-lubricated bearings Installation and returning to service Temperature of the rolling element bearingsRe-adjusting the clearance gaps Maximum clearance gaps Radial bearingMultitec Trouble-shooting General assembly drawing Pump sizes 32 toVertical design Pump sizes 32, 50 Close-coupled pump up to pump sizeRadial suction nozzle Pump sizes 100, 125Pump sizes 125 525.1/2/4 Spacer sleeve List of componentsDescription 529Achtung Attenzion BildKSB Aktiengesellschaft

1777.8/7-10 G3 specifications

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