Flowserve CPXVC - Manual (Page 11)

CPXVC USER INSTRUCTIONS ENGLISH 26999930 03-11
Page 11 of 32 flowserve.com
3 DESCRIPTION
3.1 Configurations
The pump is a modular designed cantilever
centrifugal sump pump for medium duty chemical
process liquid pumping requirements.
3.2 Name nomenclature
The pump size will be engraved on the nameplate
typically as below:
2K3x3CPXVC-R10
Mark 3 wet end
impeller drive size
Nominal suction size in mm/25
Nominal discharge size in mm/25
C = Cantilever version of CPXV sump pump
R = Recessed Impeller and Casing
Nominal maximum impeller diameter in mm/25
The typical nomenclature above is the general guide
to the CPXVC size and configuration description.
For the 1.2 m nominal depth there are two sizes
available at the maximum 4 pole 50 Hz and 60 Hz
motor speeds, 2K2x2CPXVC-R10 and the
2K3x3CPXVC-R10 size. Identify the actual pump size
and serial number from the pump nameplate. Check
that this agrees with the applicable certification
provided.
3.3 Design of major parts
3.3.1
Pump casing
The recess pump casing is designed for operation
when submerged in the sump liquid.
3.3.2
Impeller
A recessed impeller is fitted which is recessed within
the back of the casing and the impeller setting is to
the rear backvanes.
3.3.3
Shaft
The shaft has a keyed drive coupling. It is supported
by rolling bearing(s) above the soleplate and has no
bearing(s) below the soleplate.
3.3.4 Bearing housing
The bearing housing enables adjustment of impeller
rear face clearance via the bearing carrier jacking
screws.
3.3.5
Pump bearings and lubrication
The pump is fitted with a thrust type ball bearing that
may be configured differently dependent on use.
The thrust bearing(s) are grease lubricated.
3.3.6
Soleplate seal
The modular design enables one of a number of
sealing options to be fitted.
3.3.7
Driver
The pump is normally driven by a flange mounted
electric motor. An air or hydraulic motor may be
utilized.
The position of the terminal box can be changed by
rotating the complete motor. To do this, remove the
fasteners from the motor flange, rotate the motor and
re-fit the fasteners.
3.3.8
Accessories
Accessories may be fitted when specified by the
customer.
3.4 Performance and operating limits
This product has been selected to meet the
specifications of the purchase order. See section 1.5.
The following data is included as additional information to
help with your installation. It is typical, and factors such
as temperature, materials, and seal type may influence
this data. If required, a definitive statement for your
particular application can be obtained from Flowserve.
3.4.1
Operating limits
Maximum pump ambient temperature: +55 ºC
(131 ºF) where driver is also rated for this ambient.
Maximum pump speed: refer to the nameplate.