SPP Pumps Unistream - Manual (Page 5)

Operators Instructions for
Unistream Centrifugal Pumps
Manual No/Rev
W21-002E / 10
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 5 of 24
parts for storage with the pump.
The pump shaft should be rotated by hand at
least five turns every six weeks. For special
protection of the coupling and electric motor,
where applicable, refer to the manufacturers'
instructions in the relevant appendix.
2.3.3 Exposed or Extreme Conditions Storage
For exposed storage or extreme variants in
atmospheric or environmental conditions,
please refer to SPP Pumps Ltd. for special
storage instructions to suit the conditions
applicable.
3. General Description
SPP Pumps Ltd. Unistream Pumps are a
range of horizontal centrifugal pumps that
comply with Pump Standard DIN24255. The
materials of construction can be either all
iron or iron with bronze fittings.
3.1 Pumps
The mechanical assembly comprises a rigid
shaft, supported by oil-lubricated bearings
with a double shrouded type impeller
mounted in a removable bearing housing
assembly. This is attached to an end suction
volute casing fitted with wear ring(s). The
bearing
housing, shaft and impeller
assembly can be withdrawn from the volute
for maintenance without disconnection of
pipework.
The discharge branch is positioned vertically
opposite the main pump mounting feet, an
additional mounting foot is fitted at the outer
bearing position for stability.
The complete assembly is of a rigid
construction, being intended for mounting on
suitable baseplate with electric or other
motor driver. A suitable coupling is required
to transmit the rotational drive between
pump and motor. A spacer coupling can be
fitted to allow the removal of the pump
rotating assembly without disconnecting
pipework and removal of the motor.
The shaft is sealed with a soft packed gland
for fire pump applications.
Nameplate details are shown on the back
cover, full pump specification can be
supplied on a data sheet, if requested.
Note (1) Head specified is the Duty Head generated by
the pump only.
(2) Suction pressure must be included when
assessing the Maximum Working Pressure.
3.2 Long Coupled Pumpsets
These pumpsets are supplied with
baseplate, coupling and electric motors,
specified to meet the pump duty and
customer requirements. Baseplates are
usually of the SPP Pumps Ltd. steel plate
design but fabricated baseplates may be
supplied to meet additional requirements.
A proprietary flexible coupling is fitted, this
has been selected to meet the power
transmission
and other operating
requirements for the pumpset. Coupling
details are given in the manufacturers
instructions in Appendix II.
For details of the motor supplied, refer to the
manufacturer's instructions in Appendix III.
4. Assembly and Installation
Shearing Hazard
Do NOT place fingers or hands etc.
into the suction or discharge pipe
outlets and do NOT touch the impeller, if
rotated this may cause severe injury. To
prevent ingress of any objects, retain the
protection covers or packaging in place until
removal is necessary for installation.
4.1 Initial Inspection for Damage
During transport and storage, accidental
damage to the pump may have occurred.
When the pump is to be installed, or in the
event of a handling accident, carefully
check that no damage has been sustained
by the pump before installation and
commissioning.
4.2 Preparation for Mounting
Before installation, check that the pump
mounting location is suitable for accepting
the pump unit. Refer to Section 8, for details
of pump installation dimensions or to a
certified General Arrangement Drawing
when available.