7 Operation
WARNING: OPERATION SAFETY
Risk of damage to the equipment. Do not start the pump more than six times within
one hour to prevent the overloading of the motor. If frequent starts ar
e needed, the
pump must operate continuously and be linked to the vacuum vessel using a valve. In
that case, regulation will be made by the valve and not by the start/stop of the pump.
With the valve closed, the pump consumes less energy.
WARNING: HOT SURFACE
Risk of burns. The pump in operation is hot and some surfaces could reach a
temperature higher than 80°C (176°F). There is a risk of bur
n by touching. Take note
of warning labels on the pump. Let the pump cool down before you start any work.
WARNING: HAZARDOUS WORKING CONDITIONS
Risk of injury. Wear ear protection in case of operation at high inlet pressur
e.
7.1 Media compatibility
Pumps can pump condensable gases and vapours, provided that the gas
ballast valve is open and the pump has attained its operating temperature.
7.2 Start-up
WARNING: AUTOMATIC RESTART
Risk of injury or damage to the equipment. To prevent the pump from operating
unexpectedly after a mains power failure, the pump must be integrated with the
contr
ol system in such a way that the pump can only be switched on again manually.
This applies equally to emergency cut-out arrangements.
WARNING: OPERATION SAFETY
Risk of injury or damage to the pump. Befor
e starting the pump make sur
e that the
pump and the
tted
accessories meet the r
equirements of your application and that
safe operation can be guaranteed.
WARNING: VACUUM HAZARD
Risk of exposure to the vacuum. Do not operate the pump with an open intake port.
Vacuum connections, oil feed and discharge openings must not be opened while the
pump is operating. Avoid exposing any part of the human body to the vacuum. There
is the risk of suf
fering injury. Observe safety information given in Mechanical hazards
on page 8.
Note:
The pump is delivered lled with oil. Before you switch on the pump, make
sur
e that the pump contains enough oil. The normal oil level in a standstill
pump is in the upper half of the sight glass. Each time before you start up
check the oil level. Do not operate the pump with an oil level below the
300956027_002_A0 - 03/2022 - © Leybold
34
Operation
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