LEYBOLD VARODRY VD100 - Important Safety Information; Mechanical and Electrical Hazards

2 Important Safety Information
Pressur
es given in bar or mbar are absolute values. If exceptionally a gauge
pressure is meant, a “g” is added (for example, bar (g)).
2.1 Mechanical hazards
WARNING:
When rotated in the wr
ong direction, the pump will generate up to 4.5bar (g) pressure
at the inlet. If a vacuum system is connected, the pressure build up can lead to
explosion of the system.
1. Avoid exposing any part of the human body to the vacuum.
2. Select a secure place for the appliance (level surface).
3. Never operate the pump without a connected intake line or without
tting a blank ange.
4. The discharge port of the pump must not be blocked or constricted.
Never operate the pump with a seal-off stopper in place blanking off
the exhaust port. Operate the pump only with a connected vacuum
system to the intake ange.
5. With a closed exhaust pipe, the pump can generate up to 1.5 bar (g)
overpressure on the exhaust. The exhaust pipes should be laid out
accordingly.
6. Condensates from the pump can collect inside or at the exhaust,
escape and spill onto the oor, when operating the pump without an
exhaust line or during transport with an exhaust being not blanked off.
In this case there exists the risk of slipping.
7. Take note of the labelling of inlet and outlet. A mix-up can lead to
dangerous build-up of pressure in the vacuum system or in the
system. After each change of the electrical connection, check the
pump's rotational direction.
8. In case of power supply outage, the vacuum system is ventilated by
the pump. If this is not wanted, install a non-return valve at the inlet.
9. After a loss of power, the pump restarts independently. If this is not
wanted, install a restart inhibitor.
10. Do not operate the pump with any of the covers removed. This may
result in serious injury.
2.2 Electrical hazards
DANGER:
After a mains power failure the pump will run up automatically again. This also applies
in the case of an emer
gency shut-down. In order to prevent the pump from running
up automatically again, the pump must be integrated within a control arrangement
such that it can only be switched on manually again after the mains power has
returned.
1. Housing parts must not be removed.
2. The electrical connection must only be provided by a trained person.
3. Obey the national regulations in the country of use like EN 50110-1 for
Europe.
7
300766038_002_C3 - 09/2021 - © Leybold
Important Safety Information