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Use and maintenance manual of magnetic drive type cycloidal pumps of Features the New “PWD” Magnetic Coupling by CDR Pompe S.p.A. series Milano, Italy...
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ATTENTION! VARISCO MAGNETIC DRIVE TYPE PUMPS UTILISE HIGH INTENSITY RANGE MAGNETS. MAINTENANCE OF THESE PUMPS THEREFORE, RECOMMENDED USERS PACEMAKERS Before starting the pump, read this instruction manual carefully. If the instructions for use and maintenance are observed, the pump will yield full performance for a long time.
The pumps must be used only in applications intended by the manufacturer: - the construction material - the operating conditions ( pressure, speed, temperature, etc.) - the field of application In case of doubt, contact the Technical Department of VARISCO POMPE at the following number: 049 82 94 111...
Maximum lifting velocity : V CONSTRUCTION AND FUNCTIONING The series V-TRM are magnetic drive type volumetric pumps which are a mono block construction version with a stainless steel and cast iron support. The main characteristics of these pumps is the magnetic type transmission. The external magnetic nucleus (847.1) (see figure 7 of Page 11) connected to the crank shaft (213)
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8.5 The base plate onto which the unit is mounted should be sufficiently robust and should absorb vibrations rather than cause or amplify them. Steel base plates supplied by Varisco meet these requirements. The foundations onto which these base plates are to be mounted should be perfectly level and at least 50-100 mm wider than the base plate.
10.1 described below. For any problems, doubts or information, VARISCO technicians are at your complete disposal. Do not hesitate to contact us in order to avoid operations which could compromise the correct operation of the pump.
Tolerances are too tight for the liquid to be pumped. The brushes overheat and seize, and the extremity of the idler pin on the cover heats to over 80° C. Stop the pump and increase the tolerances as indicated by Varisco. 10.5 The pump wears out quickly Rapid wear of the pump causes a sudden drop in performance.
ROUTINE MAINTENANCE 11.1 Regulation of the by-pass valve. (fig. 6) Example of calibration of the by-pass at 8 bar Calibration must be performed while the system is running. Unscrew the cap. Loosen the lock nut. Close it almost completely by means of the regulation screw (turn it in the clock wise sense in order to load the spring). Adjust the delivery valve of the piping system until the pressure gauge reading on the delivery side reaches the requires setting (in our example , 8 bar): Loosen the regulation screw (turn it anti clockwise in order to unload the spring) until the pressure gauge reading starts to fall below the...
If the pump is under warranty, do not disassemble it without consulting the manufacturer or their authorised representative. If this is not done, then the warranty will not be applicable. Prior to opening the pump, check that: it is free from internal pressure. if liquefied gas is being pumped, that all the gas has been vented.
When mounting the idler in its position, apply continual force. In the V180 and V200 models, preheat the idler and the support- flange to 80° C prior to introducing the bush. Wait for complete cooling and work the hole with a machine tool until the tolerance indicated by Varisco is reached. STORAGE If the pump is to be stored for a certain period of time, it is advisable to empty and clean it.
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VARISCO POMPE S.r.l. Zona Industriale Nord - Terza Strada, 9 - 35129 PADOVA - Italy Tel. 049 82 94 312 - Fax 049 80 76 762 e-mail: export@variscopompe.com Web site : www.variscopompe.com...