20 300598802_002_C0 - 10/2016 - © Leybold
Operation
NOTICE
NOTICE
WARNING
WARNING
4 Operation
4.1 Media Compatibility
TRIVAC
®
T pumps can pump condensable gases and vapours, provided that
the gas ballast valve is open and the pump has attained its operating tempera-
ture.
4.2 Start-up
Each time before starting up check the oil level. The pump must never be
operated with an oil level below the minimum.
Open all valves blocking the exhaust lines. The pump must never be op-
erated with a blocked or constricted exhaust line.
Check the direction of rotation before starting the pump for the first time and
after each change in the electrical connection (see Chapter 3.4).
On initial start-up, after prolonged idle periods or after an oil change, the speci-
fied ultimate pressure cannot be attained until the oil is degassed.
This can be done by running the pump for approx. 30 min. with the intake line
closed and the gas ballast valve (6/4) open.
The TRIVAC
®
T pump cannot continuously run at operating pressures
over than 100 mbar (absolute). It should reach to pressure lower than
100 mbar (absolute) within 20mins.
Use matching accessories only
Before starting the pump ensure that the pump and the fitted accessories
meet the requirements of your application and that safe operation can be
guaranteed.
Start up the pump only after it has been fully installed
Never operate the pump with an open intake port. Vacuum connections
as well as oil feed and discharge openings must not be opened while the
pump is operating. Avoid exposing any part of the human body to the vac-
uum. There is the risk of suffering injury.
Observe Safety Information 0.1.
4.2.1 Start noise
There is start noise which is a little bit bigger than pump running normal-
ly when the pump starts in the initial time after stop for a while, especially
in the condition of lower ambient temperature. The reason is when the
temperature of pump is lower, the viscosity of pump oil is higher so that
the vanes can not get out of vane slot of rotor smoothly, which causes
start noise. The noise will reduce to normal level after the pump runs nor-
mally.
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