TRIVAC
"A"
Manual,
Edition L
Death or serious injury can result from the improper use or
application of this pump. If the pump will be exposed
to
toxic, explosive, pyrophoric, highly corrosive,
or
other
hazardous process gases including greater than atmos-
pheric concentrations of oxygen, contact Leybold for
specific recommendations.
Ground the motor properly during installation. Disconnect
the power before beginning installation, maintenance, or
repair work or before interchanging the input leads when cor-
recting the direction of rotation. Disconnecting the power
also
avoids an unexpected start-up for pumps with automat-
ically resetting thermal overloads. Most of our single-phase
motors have automatically resetting thermal overloads.
Don't run the pump without an exhaust line and an adequate
exhaust system if hazardous gases or
vapors are expelled
from the pump.
Don't exceed a maximum back pressure of 7 psig. Exces-
sive pressure in the pump could damage the seals,
blowout
the sight glass, or rupture the pump housing. In addition, ex-
cessive backpressure can result in hazardous process gas
or contaminated oil leaking out of the pump. Don't install an
exhaust line with a smaller
10
than the exhaust port or allow
restrictions or deposit buildup
in
the exhaust line. If you are
purging the
oil
caSing
with inert gas, limit the inert-gas flow .
to avoid exceeding the 7 psig limit.
Hazardous process gases can concentrate in the vacuum
pump, its oil, and its filters. If the pump has been used
on
toxic, explosive, pyrophoric, corrosive, volatile, or other haz-
ardous substances, take the proper safety· precautions
before opening the pump or filters. Proper precautions could
include inert gas purging before and after you drain the oil to
sweep hazardous gas from the pump or filters;
gloves or
protective clothing to avoid skin contact with toxic or highly
corrosive substances; specially ventilated work areas; fume
hoods, safety masks; breathing apparatus; etc.
Before sending any equipment to our fadtory or to one of
our service centers, notify
us
of any toxic or other harmful
products that may be
in
the pump, its oil, or its filters.
You
will also
needto
supply us with the pump's serial and
catalog numbers from the
10
plate on the end of the oil
cas Figure
1-1).
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