VACUUBRAND PC 3012 VARIO plastic housing - Manual (Page 21)

page 21 of 129
• Pumping at high inlet pressure may lead to overpres-
sure at the gas ballast valve. Pumped gases or con-
densate might be expelled if the valve is open. If an in-
ert gas supply is connected to the gas ballast, ensure
that its inlet pipeline is not contaminated.
• You must take suitable precautions to prevent any
dangerous situation from arising if the controller starts
a NT VARIO or VARIO-B pump, switches a coolant
valve or opens a venting valve.
• Attention: If the controller is set to Autostart, the pro-
cess will start immediately after a power failure with-
out pressing any further key. It is your responsibility to
ensure that automatic start-up of the system will not
lead to any dangerous condition. Provide appropriate
safety measures. Check prior to starting the process
whether the option ”Autostart” (menu: configuration) is
enabled.
• Pay attention to the safety symbol ”hot surfaces” on
the equipment. Hot parts may cause burns if touched.
Adopt suitable measures to prevent any danger aris-
ing from hot surfaces or electric sparks. Ensure that
hot surfaces of the pump do not cause burns. Provide
a suitable contact guard if necessary.
• Ensure that the coolant outlet pipe at the waste vapor
condenser is always free and that it cannot get blocked.
Prevent the backpressure of gases and the backflow of
condensates at the outlet.
Check the liquid level in the catchpots or in the collecting
flask regularly and drain condensate in time to prevent
overfilling. Install a level sensor (see ”Accessories”, pg.
92) for monitoring, if necessary.
Provide appropriate protective measures to allow for the
possibility of failure and malfunction. The protective mea-
sures must also allow for the requirements of the respec-
tive application.
NOTICE