LEYBOLD SCROLLVAC plus - Installation; Safety Design Considerations; Conforming Use

6Installation
CAUTION: INSTALLATION SAFETY
Risk of injury to the pump. Follow all safety instructions and take note of all
appropriate precautions. If the equipment is used in a manner not specied by this
manual, the protection provided by the equipment may be impaired.
Make sure that the pump is suitable for the application. If in doubt, refer to
the our Safety Booklet in which the hazards and general safety concepts
for design, operation and maintenance of vacuum systems are explained or
contact us for advice.
A suitably trained and supervised technician must perform the installation
of the pump. Obey the safety instructions listed below, especially when
connecting the pump into an existing system. Details of the specic safety
precautions are given at the appropriate point in the instructions.
▪ Wear the appropriate safety clothing if contact with contaminated▪
components is anticipated. Dismantle and clean contaminated
components inside a fume cupboard.
▪ Vent and purge the vacuum system before installation work is started.▪
▪ Make sure that the installation technician is familiar with the safety▪
procedures that relate to the products handled by the pumping system.
▪ Disconnect the other components in the pumping system from the▪
electrical supply to prevent accidental operation.
6.1Safety design considerations
Consider the following points when designing the pumping system:
▪ Use a suitable valve to isolate the pump from the vacuum system if▪
the pump needs to warm up before pumping condensible vapours or if
vacuum needs to be maintained when the pump is switched off.
▪ Avoid high levels of heat input into the pump from the process gases,▪
otherwise the pump may overheat and cause the thermal protection
system to operate.
▪ Make sure that the exhaust pipeline cannot become blocked. If an▪
outlet-isolation valve is tted, make sure the pump cannot be operated
with the valve closed.
▪ Provide for a purge of inert gas when the pumping system is shut down,▪
to dilute dangerous gases to safe concentrations.
6.2Conforming use
The pump is designed to pump the following gases:
▪ Air▪
▪ Carbon dioxide▪
▪ Helium▪
▪ Carbon monoxide▪
▪ Nitrogen▪
▪ Argon▪
▪ Oxygen (O
2)
▪
The pump can be used to pump water vapour. Caution must be taken to
make sure that vapour does not condense inside the pump. Refer
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26 300668736_002_C7 - © Leybold
Installation