1 GENERAL INFORMATION Varvel speed reducers and variators are not in the field of application of the Machinery Directive, Article 1(2), and they must be not put into service until the machinery into which they are to be incorporated, has been declared in conformity with the provisions of Article 4(2), Annex II (B) of Machinery Directive 98/37/CE and, for Italy only, of DL 459/96.
ACNH B.V. http://www.wentellagers.nl VARVEL SAFETY WARNINGS PRODUCTS LAYOUT 2 SAFETY WARNINGS 2.1 Products Operation During operation, outer surfaces of gearboxes and variators may warm up because of in motion parts and also by external environmental conditions. Everything referred to transport, stocking, assembling, setting up, starting and maintenance must be performed by trained personnel and that follows this manual within specific national / regional regulations about safety and prevention of accidents.
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT 3.1 Series RC The layout shows the general structure of a two-stage foot-mounted helical gearbox type FRC. The exact identification of spare parts is sent to the appropriate Catalogue MRC. Oilseal Bearing Housing Bearing...
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Series RD The layout shows the general structure of a two-stage foot-mounted helical gearbox type FRD. The exact identification of spare parts is sent to the appropriate Catalogue MRD. Input cover Spacer Hollow input...
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Series RP and XA The layout shows the general structure of a one-stage flange-mounted helical gearbox type FRP and FXA. The exact identification of spare parts is sent to the appropriate Catalogue MRP or MXA.
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Series RS The layout shows the general structure of a foot-mounted worm gearbox type FRS. The exact identification of spare parts is sent to the appropriate Catalogue MRS. Housing Bearing Side cover Oilseal Flange IEC...
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Series RT The layout shows the general structure of a foot-mounted worm gearbox type FRT. The exact identification of spare parts is sent to the appropriate Catalogue MRT. Housing Bearing Side cover Oilseal Flange IEC...
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Torque Limiter Option TLI The layout shows the general structure of a built-in torque limiter type TLI fitted inside a worm gearbox MRS or MRT. The exact identification of spare parts is sent to the appropriate Catalogue TL.
ACNH B.V. http://www.wentellagers.nl VARVEL PRODUCTS LAYOUT Series VR The layout shows the general structure of a flange-mounted variator without gearbox type FVR. The exact identification of spare parts is sent to the appropriate Catalogue MVR. 05 06 24 23 22 21 20 19...
ACNH B.V. http://www.wentellagers.nl VARVEL INSTALLATION 4 INSTALLATION 4.1 Tolerances Tolerances are recommended according to DIN 748 as follows • Shafts: solid input or output ISO h6 hollow input ISO E8 hollow output ISO EH7 centre hole DIN 332, DR •...
ACNH B.V. http://www.wentellagers.nl VARVEL INSPECTIONS AND MAINTENANCE 6 INSPECTIONS AND MAINTENANCE 6.2 Maintenance Servicing Observance of maintenance intervals is recommended to ensure the appropriate working conditions. • GEARBOXES According to working conditions: Eliminate by means of a vacuum cleaner any dust accumulation thicker than 5 mm Every 500 working hours or every month: Oilseal visual check to monitoring any lubricant leakage.
ACNH B.V. http://www.wentellagers.nl VARVEL LUBRICANTS 8 LUBRICANTS 8.1 Recommended Types The units are delivered already filled with synthetic long-life oil The safe operation of the units with ISO VG 320 grade lubricant is recommended in the ambient temperature range -20 e +55 ° C.
9.2 Prevalent Use VARVEL-ATEX gearboxes and variators are identified like « components », fundamental but without any autonomous function to operate units and protection systems for production, transport, storage, measurement, control and conversion of energy, or the processing of materials which are capable of causing an explosion through their own potential source of ignition.
The electric motors and all the other elements, also enclosed the combinations of other power transmission elements to fit at the input or at the output of the products VARVEL-ATEX, must be ATEX approved according the Directive 94/9/CE. Temperature classes and max. temperature must be compatible with expected temperature limits of different product types.
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ACNH B.V. http://www.wentellagers.nl VARVEL DIRECTIVE 94/9/CE - (ATEX) 9.5 Safety Instructions Pulse generator wiring must be made before variator installation: • rotate the variator output shaft until a pole piece (A) of the friction ring holder is shown through the side threaded hole of the housing;...
ATEX Marking The Varvel Series RC, RD, RP, RS, RT, XA, VR are according to design requirements asked by Group II, Category 2 and to operate in areas with explosion danger of gas (Zone 1 and Zone 2) and of combustive dusts (Zone 21 and Zone 22).
VARVEL MAINTENANCE SCHEMES VARIATORS SERIES VR Friction ring replacement Friction ring replacement of variators VR VARVEL-ATEX must be carried out by appointed Service Centres . • Unscrew the nuts (44) and remove the motor • Unscrew the screws (01) and remove motor flange (02) •...
Notifi- cato di deposito del fascicolo tecnico 0080 INERIS, F-60550 Verneuil en Halatte were deposited at the Notified Body of Tech- nical File Deposit Firma autorizzata VARVEL SpA (Funzione: Presidente) Authorized Signature (Function: President) (Francesco Berselli) Luogo e data dell’emissione Crespellano, 25.07.2003...
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