Agilent Technologies 969-8888, Инструкция по эксплуатации

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TECHNICAL INFORMATION
104/107 87-901-011-01
INLET SCREEN INSTALLATION
The inlet screen prevent the blades of the pump
from being damaged by debris greater than 5.2
mm diameter. The inlet screen does reduce the
pumping speed by about 10%.
The inlet screen is fitted in the upper part of the
pump, as shown in the figure.
The following figure shows the ISO 250 F pump
flange section with the protection screen fitted on
it. As you can see, the overall dimensions do not
change as the inlet screen remains inside the
pump profile.
NOTE
The system is shipped with the inlet screen
mounted. Before using the system please check
that the inlet screen in the correct position.
The center ring can be installed as shown in the
following figure.
CAUTION
If the chamber of the system is "baked" at a high
temperature, a shield should be installed to pre-
vent thermal radiation heating the high vacuum
flange on the pump. The maximum temperature
allowed for the inlet flange is 80° C.
WATER COOLING CONNECTION
The pumping system is supplied with a metallic
model water cooling kit.
Two 9-10 mm internal diameter rubber or plastic
tubes from the water supply must be fitted to the
two dedicated nozzles.
NOTE
These tubes must be held on the respective noz-
zles using hose clips to avoid that the tube(s) gets
loose or disconnected during operation.
Cooling may be carried out either through an open
circuit with eventual discharge of the water, or us-
ing a closed circuit cooling system.
The water temperature must be b15°C
and +30°C, with an inlet pressure between 3 and 5
bar.
The customer can alternatively order the 90° bend
water cooling kit, plastic model (969-9348) or me-
tallic model (969-9338).
NOTE
The water electrical conductance must be
≤
500
μ
s/cm. When the conductance is higher, in closed
water circuit, the use of up to 20% of Ethyl-Glycole
is suggested.