ARO SCD501BN08-V Series Operatör El Kitabı - Sayfa 5
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Pump does not work when the liquid level rises above 10
cm (4 inches) higher than the open end of the High Level
Sensing Tube.
Check the air supply pressure, normal range is 2-7 bar (29-
101 psig).
Check the LLS air pressure, normal range is 0.2-0.5 bar (2.9
- 7.25 psig).
Check the connections of the Sensing Tubes and the
connections of tubes inside the LLS. Ensure that there is no
air leakage at the fittings.
A
D
C
E
Pump
2" metallic EXP
2" metallic PRO
2" plastic EXP
3" metallic EXP
3" metallic PRO
* NOTE: Dimensions for LLS installed on the same side of the air input line.
SCD501BN08-VXX (en)
TROUBLESHOOTING
DIMENSIONAL DATA
Figure 9
DIMENSIONS
A
B
mm
in.
mm
553.1
21.8
711.7
466.8
18.4
710.8
426.1*
16.8*
819.0
570.5
22.5
855.4
480.0
18.9
856.9
Pump stops working when the liquid level falls to the open
end of the Low Level Sensing Tube.
The open end of the Low Level Sensing Tube may be
blocked by silt. Clean the silt or reinstall the open end to a
higher place.
Pump stops working when liquid level approaches the High
Level Sensing Tube's open end. The Low Level Sensing Tube
is not functional.
Air supply pressure may drop below 2 bar (29 psig) when
the pump starts. Change to a bigger air supply hose or
increase the air supply pressure.
222 mm
(8.8 inches)
B
C
in.
mm
in.
28.0
172.5
6.8
28.0
169.5
6.7
32.2
188.3
7.4
33.7
195.9
7.7
33.7
195.7
7.7
236.5 mm
(9.3 inches)
D
E
mm
in.
mm
300.0
11.8
723.1
297.0
11.7
660.0
315.9
12.4
731.0
323.5
12.7
728.1
323.3
12.7
664.8
Page 5 of 8
in.
28.5
26.0
28.8
28.7
26.2