Wilo 4/5 TYPE 17, Инструкция по установке и эксплуатации

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Installation and operating instructions WILO Mather and Platt – Sump Pumps 17
4. Product Description
4.1 Pump Casing
Volute type pump casing designed for high stress resistance
and maximum performance.
4.2 Impeller
Impeller is of the closed type, with twisted vane design for
maximum performance, dynamically balanced. It is keyed at
the end of the shaft and secured by means of an impeller nut
and locked by means of lock washer to ensure positive locking.
4.3 Back Cover
It is provided with “O - Ring” for positive leak proof join t
between pump casing and back cover. Back cover holds the
throttle bush at the end of the impeller.
4.4 Stuffing Box
Stuffing box is provided with mechanical seal on request.
4.5 Mechanical seal (Refer Fig. 11; Page No. 11)
Pumps supplied with vapor proof construction or
pressurized designs are furnished with an upper stuffing box
equipped to take mechanical seal.
4.6 Bearings & lubrication
Press fitted bearing in the back cover and intermediate bearing
brackets to support the shafts. The intermediate bush
bearings shall be lubricated with the liquid handled by the
pump and hence it is necessary that the liquid handled should
have sufficient lubricating properties. External water should
be supplied to lubricate the bearing, if liquid to be handled
contains suspended solids.
Double row angular contact ball bearings are grease lubricated
and mounted at the top of the head shaft in the bearing
housing. It takes axial thrust and shaft and Impeller weights.
4.7 Shaft
Top, Intermediate and pump shaft of ample strength and
rigidity. Bearing span is to keep as per API-610 standard.
4.8 Couplings
Flexible coupling M&P make pin and bush type coupling are
standard design. Other makes also supplied on request.
4.9 Muff coupling assembly
The accurately machined muff coupling, and split collars are
used to connect the two shafts length wise.
4.10 Support pipes
Support pipes top, intermediate, bottom is fabricated from
steel/stainless steel pipes. Flanges are accurately machined
faced for parallelism. Holes are provided in pipes for overflow.
4.11 Intermediate bearing bracket
It is rigid housing contains the bush bearings which in turn
supports and align the shaft perfectly. It is accurately face
machined to maintain the parallelism and accurately bored to
keep the perfect alignment.
4.12 Delivery pipe
It is included in standard scope of supply. It brings the pump
liquid to mounting plate level.
Delivery pipe flanges are as per ANSI 150 class FF or RF.
We can also supply as per IS6392 table no. 17
4.13 Mounting plate
It is machined from both sides and carrying the
entire pump weight.
4.14 Motor Stool
It is fabricated from steel and is accurately machined for
parallelism of faces and concentric bores to maintain perfect
alignment of motor and pump shafts. Motor is mounted on
motor stool.
4.15 Lubrication pipeline
Pipelines are connected to bearing brackets to lubricate the
bush bearings by pumping liquid or external lubrication.
4.16 Bottom pipe
It is the additional piece provided at the suction side of
casing. It is in between the suction strainer and pump casing.
It is provided when the installation depth goes above 6m. It
is mandatory in AOP & EOP designed pumps.
4.17 Product Name Plate
Product Name plate is affixed on the motor stool.
The data on the Name plate is as shown below,