l
Screw on the filler cap (CLF) for the cooling liquid.
Saving the operating parameters
As soon as the vacuum pump is working under normal conditions after
being switched on:
l
Measure the working current of the motor and save it as reference
value for all future maintenance and repair work.
Recommendations on operation
Application
WARNING
The vacuum pump is designed for use under the conditions
specified here.
If these conditions are not met, there is a risk of damage to or total
destruction of the vacuum pump and its components!
The vacuum pump may only be operated under the conditions
specified below.
The COBRA NS vacuum pumps are designed for use in industrial
applications and similar industries.
Maximum permissible inlet pressure: atmospheric pressure
l
Make sure that the maximal counterpressure at the discharge of
0,2 bar is never exceeded. If there is a risk of obstruction of
exhaust lines, a permanent discharge pressure monitoring is
recommended.
They can be used to draw gases and gas mixtures.
WARNING
When using toxic, inflammable and/ or explosive gases, make sure
that the system corresponds in design to applicable local and
national safety regulations and that all applicable safety measures
are followed.
All product-specific safety regulations must be observed.
Solid particles must not get into the vacuum pump. Procedural errors
can result in the pump sucking in a certain quantity of liquid. If the
pump has sucked in liquid, a short drying time is necessary at the end
of the process.
The temperature of the sucked gas depends on the inlet pressure. The
lower the inlet pressure (Pa) is, the higher the temperature of the
drawn gas can be (TGas). The following values apply:
–
Pa < 50 mbar, TGas < 200°C
–
Pa > 50 mbar, TGas < 70°C
The vacuum pump is designed for use in an environment which is
potentially non-explosive environment.
Max. permissible number of startings per hour: 6.
As far as temperature is concerned, the pump is suitable for continuous
duty at any inlet pressure between atmospheric and ultimate pressure.
CAUTION
The surface temperature of the vacuum pump can exceed 70°C
when the vacuum pump is in operation.
Risk of burns!
The vacuum pump may not be touched when it is in operation. If
touching the pump is unavoidable, wait until the surface
temperature has cooled down or wear protective gloves.
CAUTION
The intensity of the noise of the vacuum pump is higher within a
certain area of the pump.
Risk of hearing damage!
Users must wear ear protection when spending a longer period of
time in the vicinity of a non-insulated vacuum pump.
CAUTION
The COBRA NS vacuum pumps are always delivered without oil,
without cooling water and without cooling liquid.
Operation without oil will result in damage to the vacuum pump!
Operation without coolants will result in damage to the vacuum
pump!
The vacuum pump must remain in a horizontal position when it has
been filled with oil.
CAUTION
The cooling water flow, which is checked by the flowmeter FIS-/01,
must be at least 2 l/min regardless of the position of the
thermostatical valve TV.
l
Make sure that all caps, safeguards and similar covers are
mounted.
l
Make sure that the protective device will not be disconnected.
l
Make sure that the inlet and outlet for the cooling air are not
covered any way.
l
Make sure that the system does not leak. Leakages of dangerous
substances must be prevented.
l
Make sure that the “Installation prerequisites” are followed and
ensure that adequate cooling is provided.
The following must be noted when the pump is shut down for a longer
period of time:
CAUTION
If there is a risk of frost, all the cooling water must be drained out of
the vacuum pump if the pump is shut down for a longer period of
time!
–
Drain the cooling liquid.
u
Unscrew the drain plug (CLD) for the cooling liquid.
u
Drain the cooling liquid completely.
u
Screw on the drain plug for the cooling liquid again.
u
Collect the cooling liquid and recycle it or dispose of it
according to local or national regulations.
–
Drain the cooling water.
u
Disconnect the cooling water inlet and outlet lines.
u
Drain the cooling water completely.
NS 0070-0160 C
Installation and Commissioning
0870570353 (En)
Page 11
Filler cap
Max
Summary of Contents for COBRA NS 0070-0160 C
Page 23: ...Note...
