Wilden PX4 series, Инженерия, эксплуатация и обслуживание, Страница: 19 / 43

P E R F O R M A N C E
PX8 HS Performance 17 WILDEN PUMP & ENGINEERING, LLC
SET
TING 4 PERFORMANCE CUR
VE
EMS CUR
VE
PX8 S
ANIFL
O HS REDU
CED S
TROKE PTFE SIPD-FITTED
(Sanitary Integrate Piston Diaphragm)
EXAMPLE
A PX8 Sanifl
o HS, reduced stroke PTFE SIPD-fi
tted pump operating
at EMS setting 4, achieved a fl
ow rate of 197 lpm (52 gpm) using 93
Nm3/h (55 scfm) of air when run at 4.1 bar (60 psig) air inlet pressure and 1.4 bar (20 psig) discharge pressure (See dot on performance curve). The end user did not require that much fl
ow and wanted to reduce
air consumption at his facility
. He determined that EMS setting 3
would meet his needs. At 1.4 bar (20 psig) discharge pressure and EMS setting 3, the fl
ow “X factor” is 0.87 and the air “X factor” is
0.74 (see dots on EMS curve). Multiplying the original setting 4 values by the “X factors” provides the setting 3 fl
ow rate of 171 lpm (45 gpm) and an air consumption of 69
Nm3/h (41 scfm). The fl
ow rate was reduced by 13% while the air con-
sumption was reduced by 26%, thus providing increased effi
ciency
.
For a detailed example for how to set your EMS, see beginning of performance curve section. Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.
The Effi
ciency Management System (EMS)
can be used to optimize the performance of your Wilden pump for specifi
c applications.
The pump is delivered with the EMS adjusted to setting 4, which allows maximum fl
ow
.
The EMS curve allows the pump user to determine fl
ow and air consumption at
each EMS setting. For any EMS setting and discharge pressure, the “X factor” is used as a multiplier with the original values from the setting 4 performance curve to calculate the actual fl
ow and air consumption values
for that specifi
c EMS setting. Note: you can
interpolate between the setting curves for operation at intermediate EMS settings.
TECHNIC
AL D
A
T
A
Height
. . . . . . . . . . . . . . . . . . . . . . . . .
1008 mm (39.7”)
Width
. . . . . . . . . . . . . . . . . . . . . . . . . . .
460 mm (18.1”)
Depth
. . . . . . . . . . . . . . . . . . . . . . . . . . .
498 mm (19.6”)
Ship W
eight
. . . . . . . . . . . . . . . . . . . . .
49 kg (109 lbs.)
Air Inlet
. . . . . . . . . . . . . . . . . . . . . . . . . . .
19 mm (3/4”)
Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51 mm (2”)
Outlet
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51 mm (2”)
Suction Lift
. . . . . . . . . . . . . . . . . . . . . .
2.3 m Dry (7.4’)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.0 m W
et (29.5’)
Disp. Per Stroke
. . . . . . . . . . . . . . . . . .
0.4 l (0.11 gal.)
1
Max. Flow Rate
. . . . . . . . . . . . . . . .
405 lpm (107 gpm)
Max. Size Solids
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mushroom V
alve
. . . . . . . . . . . . . . . . .
6.4 mm (1/4”)
Ball V
alve
. . . . . . . . . . . . . . . . . . . . . . .
12.7 mm (1/2”)
Surface Finish
. . . . . . . . . . . . . . . .
Ra 0.8 µm (32 µ-in)
1
Displacement per stroke was calculated at 4.8 bar (70 psig)
air inlet pressure against a 2 bar (30 psig) head pressure. Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi
guratio
n.
When alternate check valve options are used, multiply fl
ow rate by appropriate factor: For optimum life and performance, pumps
should be specifi
ed so that daily operation parameters fall in the center of the pump performance curve.