Safety Information
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300407956_002_C1 - 01/2017 - © Leybold
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Select the location where the pump is installed so that all controls can
be easily accessed. Place the pump only on a floor which is level. It
can topple when it is tilted by more than 10° with respect to the verti-
cal axis.
For pumps on castors only
Because of the fitted castors, the pump must only be placed on a level
floor capable of supporting the pump’s weight, as otherwise there
exists the risk of the pump rolling away. Moreover, the pump may only
be moved on a level floor! Moving the pump along sloping paths or
ramps is prohibited! The pump must only be transported with a forklift
or a crane! At the installation location, screw down the adjustable feet.
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Before beginning with any maintenance and servicing work always
ensure that
no gas can flow backwards
through the pump since
then the rotors might turn against the normal direction of rotation. For
this reason vent the vacuum chamber to the discharge pressure level
or ensure through suitable valves that the vacuum chamber and the
lines are reliably separated from the pump. When connecting several
pump systems, pressure differences between inlet and discharge can
give rise to uncontrolled turning of the pump’s shafts.
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During operation, the cooling water circuit must not be shut off. A
cooling water discharge which has been blocked can cause the for-
mation of gas bubbles and result in excessively high pressures.
12
Lay electric feed and cooling water lines so that there is no risk of
trip-
ping
over these.
13
When changing the oil remove any escaped oil as otherwise there is
the risk of slipping.
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Before doing installation work on the pump system make sure that no
vacuum is present in the pump and that all media connections have
been depressurised.
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Before disassembling any cooling water lines, leave the pump to cool
down, shut off the feed line.
0.2 Electrical Hazards
1
The electrical connection must only be provided by a trained person.
Observe the national regulations in the country of use like EN 50110-1
for Europe, for example.
2
Potentially lethal voltages are present at the mains connections. Before
beginning with any maintenance or service work on the pump, discon-
nect the pump from all power supplies (lockout/tagout).
3
Install a device for a safe disconnection from the power supply.
4
High electric voltages! When touching parts at high electric voltages,
there is the risk of suffering severe injuries by an electric shock! Covers
marked with this symbol must only be opened by trained electricians
after having reliably deenergised (lockout/tagout) the equipment.
5
Always operate the pump with a properly connected protective earth
conductor and make sure that the motor casing is closed.
DANGER
