VARISCO SaxMag V Series, Руководство по эксплуатации

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OPERATING MANUAL - SAXMAG V
Page 19
5.2
Installation
5.2.1 Checks
• Prior to starting installation, inspect and check the entire unit and system.
• Check to make sure that the data of the unit (specified on the rating plate, in the
documentation, etc.) is in conformity with the hazardous zone, the category and the system
requirements.
• Damage as may have occurred: the pump unit to be installed must be in a sound condition
and is required to have been stored properly (for three years max.) prior to installation. In
case of doubt or if damage is found, please contact your supplier of Varisco pumps.
• Care must be taken to make sure that hot air from other installations or systems does not
adversely affect the environs of the pump system; the ambient air temperature must not
exceed 40°C.
5.2.2 ATEX Certification
All additional components such as couplings, guards, drive, motor, peripheral equipment, etc. must be
covered by the ATEX 95 certification or certified separately for the appropriate temperature category.
The assembled pump unit is required to have a separate certification and a separate rating plate which
is supplied by the manufacturer of the pump unit.
5.3 Checks prior to installation
Mount the pump as close as possible to the tank of the liquid to be pumped and allow sufficient space
around to facilitate maintenance work, inspection and checks. Keep enough free space specifically in
front of the pump to permit the guard to be attached.
• The pump and the system must be accessible for maintenance and inspection during
operation.
• Make sure that there is unobstructed air supply to the pump, the drive and the motor.
• An electric motor should have a clearance of not less than 25% of the motor diameter.
• The pump should be mounted horizontally and placed directly on the pump feet. Any
mounting position other than specified will have an impact on draining, filling and venting of
the pump as well as on the magnetic coupling's proper function.
• The bearing bracket needs to be free-standing in the atmosphere to permit cooling and
guarantee proper functioning and lubrication of the grease-lubricated ball bearings.
Inadequate cooling may entail unacceptable surface temperatures of the bearing bracket,
insufficient lubrication and, thus, premature ball bearing failure. Where adequate cooling
cannot be guaranteed at all times there will be a need for the bearing bracket's surface
temperature to be monitored.
• Make provision for equipotential bonding between the pump and the foundation. In locations
similar to areas in potentially explosive atmospheres, the connection to electric power must
conform to IEC 60079-14.