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BA-
45.01.0 • US •01/15
4-6
4. Installation
4.4.5
Thermometer (4.1/8)
The thermometer for monitoring the compression
temperature must be positioned together with the non-
return valve in the pressure pipe directly behind the
pressure nozzle (attach threaded sleeve R ½" for this
purpose). The thermometer must be inserted into the
pipe to half the pipe diameter.
The indication range of the thermometer
must cover the range from 0 to 200°C.
4.4.6
Safety valve (4.1/6)
After each compressor, a non-lockable safety valve
must be fitted (accident prevention regulation VBG
16). The valve should be designed and adjusted so
that pressures of more than 10% above the permitted
operating pressure are prevented. It must be able to
expel the entire transport capacity of the rotary
compressor/compressor and vacuum pump. The valve
must also be fitted with a manual ventilation facility.
If the ventilation valve is mounted or fitted
incorrectly or interfered with, an increase
of the vacuum and the temperature could
CAUSE AN EXPLOSION
!
When fitting the safety valve, the following points must
be observed:
Installation directly behind the machine before any
other shut-off mechanism (especially the shut-off
slide),
The setting must correspond to the maximum
permitted operating pressure (cf. Machine data),
The setting must be protected from unauthorized or
accidental alteration,
The valve must not be blocked,
The safety valve must not be used to regulate the
air volume in pressure operation.
Correct function must be checked each
week by activating the manual ventilation.
4.4.7
Manometer (4.1/7)
For continuous pressure monitoring. Measurement
range conforming to the operating pressure. Mounted
directly behind the pressure nozzle.
4.4.8
Contact prevention
The drive of the machine and the hot pressure pipe
must be provided with a contact prevention
mechanism. Accidental touching of rotating or moving
machine parts must be impossible.
The surface temperature must not exceed 80°C.
4.4.9
Oil level monitoring
A monitoring device must be fitted in the oil reservoir
to indicate when the oil level is too low.
The oil level monitoring device can be
omitted if adherence to the minimum oil level
is
guaranteed
by
the
operator
in
accordance with 6.2 (visual control at the oil
level window).
4.4.10 Rotation speed monitoring
A rotation speed indicator on the machine and an
indicator
in
the
operating
area
are
to
be
recommended. For the permitted rotation speed
ranges, see
4.6, Drive
.
Water cooling
A forced-circulation cooling system with air-cooled
cooler and rotary pump is necessary for re-cooling the
cooling water.
The rotary pump should be installed so that it operates
only when the compressor is running.
A thermometer must be installed in the water return.
Rotary Compressor and
Vacuum Pump
Type
RFW
150
DV
RFW
200
DV
RFW
260
DV
Heat to be dissipated
at 0.5 bar
overpressure
11.5
19.0
24.0
at 2.0 bar
overpressure
14.5
20.0
28.0
at 400 mbar
vacuum
kW
11.0
17.0
19.0
Required pumping capacity of
water pump, at least
at 0.5 bar
overpressure
15
25
35
at 2.0 bar
overpressure
20
29
40
at 400 mbar
vacuum
l/min
15
24
28
Pipework dimensions
R1
R1
R1
Recommended equalizing
tank
I
10
10
10