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2.4 Forbidden uses
Operation in explosive atmosphere Fire and explosion
Forbidden use
Suction of explosive, toxic and dangerous
gases
Fire and explosion
Environment pollution
Risk of operators health
Operation with flammable service liquids Fire and explosion
Suction of liquids with flow higher than the
limits of the table in the par. 2.1 - 2.2
RVS stall and possible ejection of parts
Install a liquid separator on the suction nozzle
of RVS
Long operation with shut off valve locked
Cavitation
RVS stall and possible ejection of parts
Inform the qualified personnel charged with
RVS
Operation with wrong direction of rotation RVS stall and possible ejection of parts
Operation with speed higher than the
maximum one
RVS stall and possible ejection of parts
Use suitable limits to the electric motor speed
when it is supplied with frequency converter
Operation with pressure P1 higher than
atmospheric pressure
Ejection of dangerous substances
Use a safety pressure switch
Operation with pressure P1 lower than the
minimum one
Cavitation
RVS stall and possible ejection of parts
Operation with pressure P2 higher than
maximum one
RVS stall and possible ejection of parts
Operation with temperature T1 higher
than the maximum one
Overheating
Fire
RVS stall and possible ejection of parts
Use a safety temperature switch on the
convoyed gas
Operation with temperature Tl higher than
the maximum one
RVS stall and possible ejection of parts
Use a temperature switch on
circuit
2.5 Residual Risks
Hazard
UNI EN 1012-2 Vacuum pumps
Cutting, severing, drawing in,
trapping, entanglement, friction
and abrasion
None
Fluid ejection
Overcoming the operation limits (par. 2.1 - 2.2) can cause the risk of ejection of fluids
Ejection of parts
Overcoming the operation limits (par. 2.1 - 2.2) can cause the risk of ejection of parts
Install a safety valve on the discharge in case the pump is not discharging to the atmosphere
Loss of stability
None
Electric installation
None
Only for the principal motor supplied directly by ROBUSCHI
Delivery of ROBUSCHI does not include the design of the operating environment where the
pump will be installed, nor the power circuits, control circuits and other controls or equipment
required by the specific function of the pump
Electrostatic phenomena
External influences on electrical
equipment
Thermal safety
None
Noise
None
Radiation None, related to motor and electrical equipment supplied by Robuschi.
Delivery of ROBUSCHI does not include the design of the operating environment where the
pump will be installed, nor the power circuits, control circuits and other controls or equipment
required by the specific function of the pump
Suction of liquids
Overcoming the operation limits (par. 2.1 - 2.2) can cause the risk of ejection of parts
Gas
Forbidden use can cause the risk of suction of dangerous gases
Fire and explosion Overcoming the operation limits (par. 2.1 - 2.2) can cause the risk of fire and explosion
Operation with shut-off valve locked can produce the risk of fire
The not correct maintenance can cause the overheating and the risk of fire
Failure of energy supply None
Delivery of ROBUSCHI does not include the design of the operating environment where the
pump will be installed, nor the power circuits, control circuits and other controls or equipment
required by the specific function of the pump.
Safety Related Measure and
Means
Delivery of ROBUSCHI does not include the design of the operating environment where the
pump will be installed, nor the power circuits, control circuits and other controls or equipment
required by the specific function of the pump
Emergency Stops Delivery of ROBUSCHI does not include the design of the operating environment where the
pump will be installed, nor the power circuits, control circuits and other controls or equipment
required by the specific function of the pump. Emergency button is to be installed on behalf of the
customer.
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