0.3 Thermal Hazards
1 With the pump warm from operation, the housing and oil temperature
may exceed 70 °C. Protect hot parts against being touched. Let pump
and oil cool down. Always wear protective gloves and protective gog-
gles, also for protection against aggressive residues in the oil.
2 Handle the pump only while vented and after having let it cool down.
3 Take note of the warning information on the housing surface. If this
warning information was removed, covered or obstructed, then pro-
vide corresponding additional warning information.
4 Never open the oil fill or oil drain plugs while the pump is running.
There is the risk of suffering burns.
0.4 Hazards Caused by Materials and Substances
1 The pump is not suited for pumping of:
■
combustible and explosive gases and vapours (except within the
permissible scope for pumps certified in accordance with ATEX
Category 3 inside)
■
radioactive and toxic substances
■
gas mixtures with an oxygen share exceeding 21%
■
pyrophorous (self-igniting) substances.
Moreover, the pumps are not suited for placement and operation
within explosion hazard areas.
Please consult us first when planning such an application.
2 Before commissioning the pump, make sure that the media which are
to be pumped are compatible with each other so as to avoid hazar-
dous situations. All relevant safety standards and regulations must be
observed.
3 Before operating the pump with a gas ballast or a purge gas (option)
check the compatibility of the gas with the pumped media so as to
avoid dangerous conditions during operation.
4 Pump with installed purge gas unit:
When operating the pump with a purge gas valve, secure the purge
gas supply so that in the event of a malfunction no overpressure can
occur in the system.
5 When nitrogen is used as the purge gas or as the gas ballast, small
quantities of nitrogen can escape to the surroundings. Ensure sufficient
ventilation for the room in which to pump has been installed.
6 The vacuum line must be leaktight. Reactive or corrosive process
gases may escape or the pumped gases can react with air or atmos-
pheric humidity. After installation of the pump and after servicing work
on the vacuum, a leak search will always be necessary.
Please note the special information on the pump’s shaft seal given in
the following.
CAUTION
DANGER
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