Possible Sources Of Danger - vacuubrand PC301 VARIO select Series Instructions For Use Manual

Safety information
Observe vacuum
pump design
Note mechanical
load capacity
Prevent backup in
the outlet line
18
Prevent foreign bodies inside the pump
Particles, liquids and dust must not get inside the vacuum pump.
ð Do not pump any substances which could form deposits in-
side the vacuum pump.
ð Install suitable separators and/or filters upstream of the in-
let. Suitable filters are chemical-resistant, clog-proof and
have a reliable flow rate, for example.
ð Replace porous vacuum hoses without delay.

2.8 Possible sources of danger

Take mechanical stability into account
The high compression ratio of the pump may result in a higher
pressure at the outlet than the mechanical stability of the system
allows.
ð Always ensure that the outlet line is clear and non-pressur-
ized. The outlet must not be blocked to ensure that gases
can exit freely.
ð Prevent uncontrolled overpressure, e. g, due to a locked or
blocked piping system, condensate or clogged outlet line.
ð At the gas connections, the connections for the inlet IN and
outlet EX must not be mixed up.
ð Be aware of the max. pressures at the inlet and outlet of the
pump as well as the max. admissible differential pressure
between the inlet and outlet, according to the technical
data.
ð The system to be evacuated as well as all hose connections
must be mechanically stable.
ð Fix coolant hoses to the hose nozzles such that they cannot
inadvertently become loose.
Prevent condensate return
Condensate can damage the pump head. Condensate must not
flow back into the outlet and pump head through the hose line.
Liquid must not accumulate inside the exhaust gas hose.
ð Avoid condensate return by using a separator. Condensate
must not enter the inside of the housing via the hose lines.
ð Preferably route the exhaust gas hose with a fall from the
outlet, i.e., running downward so that no backup can form.
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