EBARA CDX 70 - Pump Model Identification and Curve Interpretation; Pump Type Key; Performance Curve Interpretation Guidelines

CENTRIFUGAL PUMPS CDX
TYPE KEY AND CURVE SPECIFICATIONS 60Hz
202
EBARA PUMPS EUROPE S.p.A.
Rev. E
TYPE KEY
/
HP 0.75
HP 2
HP 3
ONLY SINGLE PHASE
ONLY AISI 316 VERSION
MODEL
HSW
CDX H M 70
OPTIONAL VERSION
206
L
HYDRAULIC CODE
HP 1
HP 1.5
106
106
POWER CODE
156
076
HW
HS
306
70
200
120
H
PERFORMANCE CURVE SPECIFICATIONS
The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906 Annex A
The curves refer to effective speed of asynchronous motors at 60 Hz
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity
of  = 1 mm
2
/s (1 cSt)
The NPSH curve is an average curve obtained in the same conditions of performance curves.
The continuous curves indicate the recommended working range. The dotted curve is only a guide.
In order to avoid the risk of over-heating, the pumps should not be used at a flow rate below 10% of best
efficiency point.
Symbols explanation:
Q = volume flow rate
H = total head
P
2
= pump power input (shaft power)

= pump efficiency
NPSH = net positive suction head required by the pump