vacuubrand MD 4C NT, Инструкция по эксплуатации

Страница: 20 / 80

page 20 of 80
• 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.
• Pay attention to the safety symbol ”hot surfaces” on
the equipment. Depending on operation conditions and
ambient conditions dangers due to hot surfaces may
arise. Hot parts may cause burns if touched. Adopt
suitable measures to prevent any danger arising from
hot surfaces. Ensure that hot surfaces of the pump do
not cause burns. Provide a suitable contact guard if
necessary.
The surface temperature of the glass components at
the exhaust waste vapor condenser in particular might
be elevated in case of permanent high gas flow. The
temperatures that are produced during operation may
cause burns. Avoid direct contact with the surface.
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 regularly and drain
condensate in time to prevent overfilling. Install a level
sensor (see ”Accessories”, pg. 50) 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.
In case of overload, the motor is shut down by a self-hold
thermal cutout in the winding.
Note : Only manual reset is possible. Switch off the pump
and disconnect from the power source. Identify and elimi-
NOTICE