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INSTRUCTIONS FOR THE USE AND
MAINTENANCE OF VARISCO "M"
SERIES PROGRESSING CAVITY PUMPS
Z.I. Nord - Terza Strada, 9 - 35129 PADOVA - ITALY
Tel.+39.049.8294111 Email: export@variscospa.com
Fax+39.049.8076762
SUMMARY
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Varisco S.p.A.
Web: www.variscospa.com
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Table of Contents
Related Manuals for VARISCO M Series
Summary of Contents for VARISCO M Series
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Page 1: Table Of Contents
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com INSTRUCTIONS FOR THE USE AND MAINTENANCE OF VARISCO “M” SERIES PROGRESSING CAVITY PUMPS SUMMARY 1 PREMISE 1.1 CE MARKING 1.2 NOISE 1.3 SAFETY WARNINGS... - Page 2 Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 7 STARTUP 7.1 ADVICE FOR OPTIMAL OPERATION 7.2 PUMPS FOR FOOD 7.2.1 WHEN TO PERFORM CLEANING 7.2.2 CIP CYCLE 7.3 TEMPORARY REST 7.3.1 PROCEDURES...
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Page 3: Premise
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 1 PREMISE This Functioning and Maintenance Manual (hereinafter named “Manual”) was written according to par. 1.7.4 of the E.C.C. Directive 891391/ C.E.E., par. 1.7.4 of D.P.R. 459 of 24 July 1996... -
Page 4: Repairing
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 1.7 REPAIRING The customer shall gather in advance detailed information on the pump, as illustrated in the repairing instructions. The service staff shall be trained and repairing work shall be monitored. -
Page 5: Specific Warnings For Progressing Cavity Pumps
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com This machine has been designed considering its nominal working performance. Any indication concerning the nominal working performance is to be meant as a limit value, and shall not be exceeded in any case. -
Page 6: Brief Description Of The Product
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com The fluid coming from the stator/rotor group is conveyed to the central body, and then ejected through the outlet. Outlet Rotor... -
Page 7: Available Configurations
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 3.4 AVAILABLE CONFIGURATIONS Progressing cavity pumps can be assembled in different configurations, according to the needs: • Feedbox and screw feeder •... -
Page 8: Closed Coupling
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 4.3.2 CLOSED COUPLING Closed coupling mounting does not take into account the use of a male shaft, therefore the hollow shaft of the pump is linked directly to the motor male shaft. In this case, it is necessary to use motors (or motoreducer in the case) capable of standing axial stresses coming from counter- pressure reactions during pumping. -
Page 9: Protection Against Delivery Overpressure
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 4.6.2 PROTECTION AGAINST DELIVERY OVERPRESSURE The overpressure protection consists of a security valve set to the desired pressure and a bypass pipe which closes delivery or reduces the flow in case the pump may not be stopped. -
Page 10: Storage
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com • Make sure that the motor is not running and that it cannot be accidentally started. • Move unit slowly carefully,... -
Page 11: Bearing Housing Version (With Elastic Joint)
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com Therefore, during assembly, it is necessary to be careful not to move excessively the axis of the hollow shaft. Oil the male shaft of the motor/converter, place it so that its key is in line with the corrispondant bore. -
Page 12: Pipe Assembly
Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com Contact Varisco if you need to change the direction of rotation for pumps that use mechanical seal. IMPORTANT: In close coupled versions, it is necessary to check periodically that the shaft grub screw were well tightened and fits properly in the propeller shaft cavity, especially if the pump is employed in both directions. -
Page 13: Startup
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com LENGTH L PUMP 1 STAGE 2 STAGE 3 STAGE 4 STAGE 1230 1050 2110 1260 1580 7 STARTUP IMPORTANT • Never operate the pump when dry - this is mandatory, otherwise the stator, made of elastomeric material will overheat and may burn. -
Page 14: Cip Cycle
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com Several companies supply products for CIP cleaning. Make sure the products used are compatible with the material to be pumped. 7.2.2 CIP CYCLE •... -
Page 15: Stators And Sealing Systems
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com • Through the cleaning windows if present on the pump body. • Manually, disassembling the pump • Automatically (CIP) for pumps with suitable connectors. -
Page 16: Lubrication
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 8.4 LUBRICATION 8.4.1 IN GENERAL The Nova Rotors progressing cavity pump is supplied with lubricant for about 3250 working hours. In case of replacement of parts involving lubrication, it is advisable to re-lubricate. To this purpose,... -
Page 17: Disassembly And Assembly Of Components
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com Air leakage at intake Difficult intake Air intake from seal or packing Too Low speed Wrong direction of rotation Available NPSH below required The pump is working dry The stator is faulty –... -
Page 18: Ceramic Rotor
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 3. Remove the screws holding outlet flange (04) and the housing (05) (bearing housing or close coupled housing pumps) to the base (06). -
Page 19: Rotor/Joint Disassembly And Joint Replacement
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com WARNING When inserting the rotor into the stator, your fingers may get hurt. 9.3 ROTOR/JOINT DISASSEMBLY AND JOINT REPLACEMENT WARNING When re-assembling joints with sleeves, sleeves shall be dipped into hot water in order to soften them, thus easing their fitting in their cavities. -
Page 20: Joint Type Sn3
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 9.3.4 JOINT TYPE SN3 1. Remove the screws (6) that hold the joint to the rotor. 2. Extract the propeller shaft (6b) in the direction of the black arrow. -
Page 21: Joint Type Sn5
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com To re-assemble the internal flat sleeve (10), it is advisable to grease the sphere and use two tools simultaneously (e.g. two large screwdrivers). -
Page 22: Joint Type Sn8
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com This kind of joint has no spare parts available. In case of malfunctioning it shall be fully replaced. 9.3.9 JOINT TYPE SN8 1. -
Page 23: Replacement Of Seals
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 6. Pull the sphere in the direction of the black arrow. Since it is integral with the propeller shaft (41), they’ll both be free of the joint. Then, the hexagonal-head screws holding the bell to the rotor (or hollow shaft depending on the joint involved) will be visible at the bottom. -
Page 24: Mechanic Seal Replacement
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 9.4.2 MECHANIC SEAL REPLACEMENT 9.4.2.1 SMALL-SIZED PUMPS (MOD. 010 – 015 – 020 – 022) DISASSEMBLY 1. Remove stator and pump body following the steps outlined in Chap. 9.3.1 (p. 1 and 2) 2. -
Page 25: Re-Assembly
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 3. Loosen the fixing grub screw in the threaded hole (02) and extract from the support (05) the drive (03) + housing (04) in the direction of the black arrow. -
Page 26: Re-Assembly
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 5. Extract the drive housing slowly, making sure not to damage the seals inside (see picture B). 6. Remove the separating ring (05), the mobile part of the seal (06) and the fixed part (07). -
Page 27: Motors Connection
Varisco S.p.A. Z.I. Nord - Terza Strada, 9 - 35129 PADOVA – ITALY Tel.+39.049.8294111 Email: export@variscospa.com Fax+39.049.8076762 Web: www.variscospa.com 1. Ambient temp. °C between -16 and +40 2. Elevation less than 1000 m. 9.5.2 MOTORS CONNECTION Single-speed motors with star-delta connection (6 terminals) STAR−DELTA...