Chapter
2 –
Description
D28045104F - 02/2008
45
©
Stä
ubli
F
averg
es 2
008
2.11.
PRESSURIZATION SYSTEM FOR DUSTY SURROUNDINGS OR SPATTERING
WITH LIQUIDS
2.11.1.
PURPOSE
For very severe applications in dusty surroundings or with spattered liquids, the objective is to keep the
pressure inside the arm above atmospheric pressure in order to avoid migration of dust and liquids.
2.11.2.
INSTALLATION
a)
Plate with pneumatic system
P3
:
•
Use this fitting to connect the unit.
b)
Plate without pneumatic system
P3
:
•
If the hose
(P2)
between
(9)
and
(10)
is not used, cut the pipe
(P2)
at
(9)
and plug
(P2)
at
(10)
.
•
If
(P2)
is used for another function, add a pressure sealed union to the connector mount (black plate at
base of arm to which the electrical connector is attached).
•
Attach the unit with
4
screws (
Ø 6
max.) at item
(8)
(screws not supplied) to a rigid vertical wall in direction
shown by arrow; the air inlet
(1)
being to the left of the regulator
(2)
.
•
Provide for air inlet at
(1)
, this is a
G1/4
tapped hole; the air pressure is
10 bar
maximum. Before the
pressure arrives at
(1)
, make sure that the regulator
(2)
is completely screwed out and that the valve
(3)
is completely screwed in. Before pressurizing the arm, also make sure that the arm is correctly connected
and correctly sealed (covers closed, plugs in hoisting ring tapped hole, pipe connected at
(6)
and at
(9)
,
etc.).
•
Install a pipe with an outside
Ø 8
between the unit (output
6
) and the arm (input
P2
). Provide a male
G1/
4
union for the pipe with an outside
Ø 8
. At
(P2)
, the hole is a
G1/4
tapped hole for the complete
RX
range.
•
Pressurize the arm.
1)
Slowly screw in the regulator. First adjust the pressure to
1 bar
max. (pressure shown on pressure
gage
11
).
Note:
At this stage, the low pressure gage
(5)
must remain at
0 mbar
.
2)
Very slowly screw out the valve
(3)
;
the value on the pressure gage
(5)
must increase
progressively. When this value reaches
5
to
10 mbar
and remains stable, adjustment is
considered as correct.
•
If however the valve
(3)
is completely screwed out and it is impossible to reach
5 mbar
, check that:
a)
The circuit is tight (unit, arm, pipe, etc.)
b)
The pressure gage
(5)
is not unserviceable (damaged by a pressure greater than
40 mbar
).
If the
2
points
a
and
b
are correct, the pressure can be increased by means of the
(2)
regulator without
however exceeding
2 bar
.
Note:
It is preferable for safety reasons (valve
4
opens between
15
and
25 mbar
s) and
consumption reasons to work with minimum pressures (high and low pressures).
CAUTION:
The overpressure must never exceed
20 mbar
.
CAUTION:
An excessive value (above
40 mbar
) will make the pressure gage
(5)
unusable.
Summary of Contents for RX Series
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Page 22: ...Chapter 2 Description D28045104F 02 2008 21 Stäubli Faverges 2008 CHAPTER 2 DESCRIPTION ...
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Page 25: ...24 D28045104F 02 2008 Stäubli Faverges 2008 Figure 2 2 B A C D E F 3 4 5 2 1 6 RX 90 RX 90 R ...
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Page 35: ...34 D28045104F 02 2008 Stäubli Faverges 2008 Figure 2 7 Effective tapped depth 8 mm ...
Page 37: ...36 D28045104F 02 2008 Stäubli Faverges 2008 Figure 2 8 Figure 2 9 Figure 2 10 Figure 2 11 ...
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Page 43: ...42 D28045104F 02 2008 Stäubli Faverges 2008 Figure 2 15 shielded VACUUM VACUUM ...
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Page 83: ...82 D28045104F 02 2008 Stäubli Faverges 2008 Figure 7 4 M4 M4 1 3 3 4 4 2 A 5 7 6 M3 M3 ...
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