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1

IDENTIFICATION

1.1

Manufacturer
VARISCO S.p.A. - Terza Strada, 9 - Zona Ind. Nord - 35129 PADOVA - ITALY

1.2

Type of pump

Horizontal self-priming centrifugal pump with open impeller for handling liquids containing solids in suspension.  These pumps can operate
satisfactorily with liquids containing air or dissolved gases.

1.3

Model

The model is given on the pump nameplate.

1.4

Year of manufacture

The year of manufacture is given on the pump nameplate.

1.5

Instruction book identification

Edition 2001 

Rev.: 01

Code 400 

1.6

Nameplate information

Ratings refer to testing with water at 20°C and with a density of 1,000 kg/m

3

1.7

Field of application

Pumps are suitable for handling liquids of viscosity up to 50 cSt containing solids in suspension. They are used in industry, civil engineering,
shipbuilding, waste water treatment, construction and agriculture.

1.8

In case of breakdown

Call the following number: 

+39 049 82 94 111

2

WARRANTY

VARISCO S.p.A. warrants that only top-quality materials are used in the construction of their pumps and that machining and assembly are
carried out to high standards.

-

The company also warrants units supplied, in conformity with general terms of sale, against defective materials or faulty workmanship for
a period of one year from the material's date of delivery unless specifically stated otherwise in writing.

- The warranty is not valid if the unit has been tampered with by third parties.
-

Replacement of parts or of the unit itself can only be carried out after careful examination in an authorized workshop by qualified
personnel. The unit should be sent carriage paid.

-

This warranty does not cover materials subject to deterioration or normal wear and tear (seals, diaphragms, pressure and vacuum gauges,
rubber or plastic items, etc.), electrical material, or damage caused by misuse or improper handling of the unit by the end user.

-

Materials replaced under warranty become the property of VARISCO S.p.A..

3

GENERAL INSTRUCTIONS

The goods must be examined on arrival to ascertain any damage, particularly that incurred in transit. Also check that the goods correspond
exactly to the description on the transport documents. Any damage or differences must be reported to the forwarding agent straight away
on the transport document, and reported to the Manufacturer by means of registered letter with advice of delivery within seven days, or
they will not be acknowledged. Always quote the pump type printed on the relevant nameplate, or the serial number.

The pumps must be used only for applications for which the Manufacturer has specified:

- construction materials
- operating conditions (pressure, speed, temperature, etc.)
- fields of application

For any applications not contemplated by the Manufacturer, contact VARISCO S.p.A.'s Servicing Department - Tel. 

+39 049 82 94 111

TYPE

indicates the model of the
pump and/or pump unit

TYPE

MATR.

ITEM

m

3

/h (max)

m (max)

kW

RPM (max)

kg

MATR.

this is the
pump serial
number

ITEM

this is the number with which the
pump is associated in the agreement
documents (not always indicated)

kg

this is the weight of the pump
and/or pump unit, not including
the weight of water in the pump
casing and diesel fuel in the tank

Year of manufacture

m

3

/h 

(max)

this is the pump's
maximum flow rate,
measured at top speed
(rpm)

(max)

this is the pump's
maximum working
pressure, measured at
top speed (rpm)

kW

this is the maximum
power that can be
applied to the pump at
top speed (rpm)

RPM 

(max)

this is the pump's maximum
operating speed. The pump 

must

never

be allowed to exceed this

speed

4

Summary of Contents for ST-R Series

Page 1: ...30 C E R T I FIERAT LEDNINGSSY S T E M ISO 9001 ISO 14001 Self priming Trash Pumps ST R Series Instructions for Use and Maintenance www collyflowtech se info collyflowtech se Tel 08 703 01 30 C E R T...

Page 2: ...for use and maintenance are observed the unit will give full performance for a long time This manual also contains information for the prevention and elimination of most common operating problems The...

Page 3: ...ing the front wear plate 8 13 5 Replacing the valve 8 13 6 Replacing the seal 8 13 7 Impeller positioning with respect to the wear plate 9 13 8 Bearing maintenance 10 13 9 Replacing bearings 10 13 10...

Page 4: ...oration or normal wear and tear seals diaphragms pressure and vacuum gauges rubber or plastic items etc electrical material or damage caused by misuse or improper handling of the unit by the end user...

Page 5: ...fig 3 7 STORAGE Store the pump under cover wherever possible If the pump must be stored in the open cover it with a tarpaulin lubricate bearings to prevent rust fig 4 Prevent moisture from building up...

Page 6: ...he anchor bolt nuts and recheck alignment as illustrated in figure 6 and adjust them depending on the type of coupling as specified in sections 13 10 13 11 13 12 replace the coupling guard before star...

Page 7: ...prime do not operate it for more than 3 minutes to avoid overheating the liquid If the pump does not prime refer to section 14 1 Engine driven pumps should be brought up to running speed gradually Ne...

Page 8: ...he cover 26 Unscrew the nuts 57 2 Remove and replace the wear plate 02 To reassemble repeat the procedure in reverse Make sure the impeller is positioned accurately with respect to the wear plate as i...

Page 9: ...distance between impeller 03 and machined surface of the casing 01 B distance between wear plate 02 and machined surface of the inspection cover 26 R distancing value adopted in the range 0 5 0 7 mm...

Page 10: ...r fig 13b with a gauge measure the distance between the two halves of the coupling in at least four points and adjust so that the difference b a is as close to zero as possible see table fig 13 Tighte...

Page 11: ...e liquid is higher than expected contact VARISCO once you have measured the viscosity of the liquid Viscosity for centrifugal pumps should not exceed 50 cSt Check for other possible causes see point 5...

Page 12: ...1 DISASSEMBLING PUMP FROM SYSTEM Follow procedure given in section 16 Remove nuts securing the suction and delivery flanges Remove bolts fastening the pump to the base plate Pull the pump from the cou...

Page 13: ......

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Page 16: ...30 www collyflowtech se 08 752 99 92 info collyflowtech se Stockholm Colly Flowtech AB Box 81 Raseborgsgatan 9 164 94 Kista Tel 08 703 01 30 Fax 08 752 99 92 G teborg Colly Flowtech AB Elementsv gen...

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