ULTRASOURCE ULTRAVAC 2100, Руководство пользователя

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through a shell-and-tube type heat exchanger. The cir-
culation of the pump oil through the shell is created by
vacuum in the pump, but the circulation of the cooling
water through the tubes is thermostatically controlled.
The flow rate of the cooling water is controlled by a ther-
mostatically activated valve (see Fig. 3) that senses,
through a capillary bulb mounted in the exhaust box,
the pump's oil temperature as it is discharged from the
compression chamber. The valve will open at its set
point and close at approximately 3°F to 5°F below the
set point. The valve set point is adjustable as follows:
(a) Rotate the valve adjustment screw counter-
clockwise to cause the valve to open at a higher tem-
perature. This makes the pump run hotter.
(b) Rotate the valve adjustment screw clockwise to
make the valve open at a lower temperature. This
makes the pump run cooler.
The thermostatic valve can be manually opened by
inserting a screwdriver under each side of the spring
guide and prying the spring and guide upward away
from the valve body.
The water cooling option can be used to cool pumps
operating in high ambient temperatures, or it can be
used to maintain a pump at elevated temperatures to
prevent condensation inside the pump in wet applica-
tions. Contact Busch Engineering in Virginia Beach for
details.
2.6 Oxygen Service Pumps
Oxygen service pumps must be used in oxygen
enriched applications that are defined as any applica-
tion which has a process gas that is 25% or more oxy-
gen. If this pump is contaminated by organic com-
pounds do not attempt to use it on oxygen service until
it has been decontaminated.
These pumps have been manufactured, solvent
washed (to remove organic contaminants) and assem-
bled according to the latest technical standards and
safety regulations. If this pump is not installed properly
or not used as directed, a dangerous situation or dam-
age might occur.
It is mandatory that these operating instruc-
tions be read and understood prior to vacu-
um pump installation and start-up!
For overhaul/repair of oxygen service pumps,
Busch Inc. strongly recommends that all major repair
operations be conducted at the factory.
Improper
handling of repairs could result in extreme
danger to personnel operating the pump.
3.0 MAINTENANCE
R5 Series, Single Stage, Rotary Vacuum Pumps require
very little maintenance; however, to insure optimum
pump performance, the following steps are recom-
mended.
3.1 Pump Oil
3.1.1 Oil Level
With the pump installed relatively level, make sure that
there is sufficient clean oil in the pump (see Section
1.5). The oil level should be observed on a daily basis
and/or after 8 hours of operation and should be replen-
ished if it drops below the 1/4 mark on the oil sight
glass.
Oil level readings should be done only when the pump
is turned off. Oil can be added to the oil fill port (Ref.
88) if the pump is shut off and the circulating oil has suf-
ficient time to return to the oil sump. The oil might
appear to be foamy, which is a normal phenomenon
with aerated oil.
Thermostat valve
Fig. 3 - Water Cooled Pump
WARNING: This pump is filled with a special
operating fluid. Do not use any other type
of fluid, oil and/or grease. Use one of the
following:
• Fomblin LC 250
• Tyreno Fluid 12/25V (perfluorinated poly
ether)
• KRYTOX ®Vacuum pump fluid by Du Pont
Company
If you have any questions, please phone our
Customer Service Department for more information.
CAUTION: Do not add oil while the pump is
running since hot unfiltered oil vapor may
escape through the oil fill port.
WARNING: Insufficient oil quantity in the
pump has the potential, under certain con-
ditions, to lead to self-ignition of the
remaining oil in the pump
.
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