5.1.4a
5.1.6
5.1.5 5.1.5
5.1.4b
Page 40
of
68
INDUSTRIAL PUMPS
www
.debem.com
Chapter 5 - commissioning and shutdown
Translation of original instructions -
S
CUBIC-
S
BOXER
rev.
2021
Noise
Gas
MAX
Suction
negative
5.1.4 SPEED ADJUSTMENT
5.1.4
If an adjustment of the pump speed is required according to the viscosity of the
fluid to be pumped, it is
possible to operate in two different ways:
5.1.4a
Adjust the network air supply pressure;
5.1.4b
Depending on the pilot valve installed, shutter the volume of air (flow rate) by means of the needle valves
on the oscillator or by adjusting the operating speed remotely from the PLC.
CAUTION
: risk of premature wear and/or diaphragm breakage.
Do not close or operate on the product suction valve to choke the fluid.
5.1.5
During operation, check that there is no abnormal noise and that there is no "gas" in the outlet fluid
; the
presence of vortices at the suction point creates cavitation and malfunctions.
Cavitation, besides being a harmful phenomenon for the pump, can be particularly dangerous in poten-
tially explosive atmospheres: it is necessary to check that the pump has been correctly sized; in case of
doubt, do not hesitate to contact DEBEM technicians
.
CAUTION
: risk of damaging the pump and/or premature wear/diaphragm breakage.
An abnormal noise or the presence of “gas” in the fluid exiting from the pump indicate an abnormal con
-
dition for which it is always necessary to determine the cause before continuing;
in such cases, imme
-
diately stop the pump and resolve the anomalous condition before continuing.
5.1.6
If the mounted pump has negative suction or is used with a very viscous fluid, reduce the pump speed
as
described in 5.1.5
.
Non-primed pumps have a negative suction capacity that varies depending on the type
of diaphragm and seals fitted; FOR FURTHER INFORMATION CONTACT THE MANUFACTURER'S
SERVICE.
CAUTION
For pumps with split manifolds, do not use fluids with different viscosities;
standstill, early diaphragm
and pneumatic circuit wear/breakage may occur.
5.1.7
The diaphragms, (internal and in contact with the product) are components subject to wear. Their duration is
strongly affected by the conditions of use and by the chemical and physical stresses. From tests carried out
on thousands of installed pumps (with head equal to 0.5 m at 20°C), it was found that the normal duration
exceeds 100,000,000 (one hundred million) cycles.
CAUTION
For safety reasons, in environments with a potentially explosive atmosphere, and when pumping flammable
fluids (permitted by marking), the pump diaphragms must be dismantled and checked every 10,000,000 (ten
million) cycles, and replaced every 20,000,000 (twenty million) cycles.
Perform the maintenance and replacements provided for by the Manufacturer on a regular basis.
20°C
ASPIRAZIONE NEGATIVA
Max 5.000 Cps a 20°C
(peso specifico di 1,4 Kg/l)
0,5 m
SOTTO BATTENTE
Max 20.000 Cps a 20°C
Page 20
of
68
INDUSTRIAL PUMPS
www
.debem.com
Chapter 2 - Introductory Information
Translation of original instructions -
S
CUBIC-
SBOXER
rev.
2021
20°C
0.5 m
NEGATIVE SUCTION
Max 5.000 Cps a 20°C
(specific weight of 1.4 Kg/l)
POSITIVE SUCTION
HEAD
Max 20.000 Cps a 20°C
TECHNICAL DATA
unit of
measure-
ment
S
MIDGET
S
CUBIC
S
BOXER 7
S
BOXER
15
S
MICRO
S
BOXER
50
S
MINI
S
BOXER
81
S
BOXER
90
S
BOXER
100
Suction/delivery fittings
inches
1/4” f
3/8” f
1/4”f
3/8”f
1/2”f
1/2”f
1/2”f
1”f
1”f
1”f
Air fitting
inches
1/8” f
3/8” f
1/8”f
3/8”f
1/4”f
3/8”f
3/8”f
3/8”f
3/8”f
3/8”f
Air pressure (MIN-MAX)
bar
8
8
2 - 8
2 - 8
2 - 8
2 - 8
2 - 8
2 - 8
2 - 8
2 - 8
Solids passing MAX
Ø mm
0
0.5
0.5
0.5
2
4
4
4
4
4
Dry suction capacity
(1)
(PTFE membrane)
m
3
3
3
3
5
4
5
4
4
4
Max head (
water 20°C)
m
80
80
80
80
80
80
80
80
80
80
MAX flow rate
(2)
water 20°C
(immersed suction manifold)
l/min
6
17
9
17
30
50
50
100
110
150
MAX fluid
temperature
( zone 1 - 21)
( zone 2 - 22)
PP+CF
°C
65
65
65°
65°
65°
65°
--
65°
--
65°
PVDF+CF (ECTFE)
°C
--
80
80°
80°
80°
80°
--
80°
--
80°
ALU - AISI 316
°C
--
--
--
--
80°
80°
80°
80°
80°
80°
MAX fluid
temperature
PP
°C
65
65
65°
65°
65°
65°
--
65°
--
65°
PVDF (ECTFE)
°C
--
95
95°
95°
95°
95°
--
95°
--
95°
ALU - AISI 316
°C
--
--
--
--
95°
95°
95°
95°
95°
95°
Weight
(empty)
PP and
PP+CF
Kg
0.52
1.4
1.1
1.6
--
5
3.6
7.5
--
7.6
PVDF (ECTFE)
Kg
--
1.4
1.4
1.9
--
6.5
4.2
8.5
--
9.6
ALU
Kg
--
--
--
2
--
6.5
4
8.2
--
8.5
INOX
Kg
--
--
--
3.8
6.5
10.5
--
11
7
11.7
Noise
(5 bar rubber balls)
dB (A)
60
65
60
65
65
70
70
70
70
75
2.
7
TECHNICAL FEATURES
The performance technical data of the
S
CUBIC and
SBOXER
series pumps refer to standard versions. The “MAX
Delivery” values refer to pumping of water at 20°C, with an immersed suction pipe with a head of 50 cm
(see figure
1)
. The “Suction Capacity” values are measured with a vacuum gauge.
NOTE
The declared capacity of dry negative suction refers to the intake of fluids with a viscosity and specific weight
equal to 1. The performance and duration of the pump’s membrane depend on the following factors:
•
The fluid’s viscosity and specific weight;
•
The length and diameter of the suction pipe and/or presence of suction bends on the product circuit;
•
Presence of abrasive solid particles.
NEGATIVE SUCTION
:
with fluids max up to 5.000 Cps at 20°C and a maximum specific weight of 1.4 Kg/l.
BELOW HEAD SUCTION
:
with fluids max up to 20.000 Cps at 20°C
(see Pump model)
.
Higher viscosities result in physical factors that require correct evaluation, therefore, it is always neces-
sary to contact the Manufacturer’s Technical Department in advance.
The following tables show the Technical Data, the maximum overall dimensions, the clamping points and the
weights;
for the dimensional values and the specific technical data of the supply, see the Technical Data
Sheets of the specific model.