Assembly & installation – SPP Pumps Auto Prime - High Flow Range XF300 & 400 User Manual
Page 6

Manual No/Rev
W77-009E / 2
Operators Instructions for
XF300 & XF400 Range Centrifugal Pumps
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 6 of 23
The discharge branch is positioned at 45° 
above the centre of the pump volute. This 
allows the fitting of a ball or flap type non- 
return valve to give a horizontal discharge. 
The pump is centreline mounted and the 
volute is provided with an access point for 
examination of the impeller. 
 
The pump has been designed for use with 
an automatic priming system typically one 
using a vacuum pump with a priming tank. 
As several varieties of priming system may 
be fitted, the details and operation 
instructions for the particular priming 
system used are fully described in a 
separate 
priming
system
manual.
Reference to priming functions in this 
manual apply to all priming systems in 
general. 
 
The complete assembly is of a rigid 
construction, being intended for mounting 
on suitable baseplate with electric motor or 
diesel engine driver. A suitable coupling is 
required to transmit the rotational drive 
between pump and driver. 
 
The shaft is sealed by an oil cooled and 
lubricated mechanical seal. Alternative 
seals can be supplied by arrangement to 
suit special customer requirements and the 
liquid being pumped. 
 
The materials of construction are: 
 
Component
Material
Impeller
Stainless Steel
Volute Casing
Cast Iron
Suction Cover
SG Cast Iron
Backplate
SG Cast iron
Bearing Housing
Cast Iron
Shaft
Stainless Steel
 
Nameplate details are shown on the back 
cover of this manual, full pump specification 
can be supplied on a data sheet, if 
requested. 
4. ASSEMBLY & 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. 
 
Abrasion & Entrapment Hazard 
 
Do NOT touch any moving or rotating parts. 
Guards are provided to prevent access to 
these parts, where they have been removed 
for maintenance they MUST be replaced 
before operating the equipment. 
 
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 &
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. 
4.3 Pump Preparation
 
Remove packaging but leave the flange 
covers in place, check that the impeller 
rotates freely by hand by turning the shaft. 
 
 
 
The bearing housing requires cooling by a 
fan fitted on the shaft. This fan is supplied 
loose with each pump and must be fitted to 
the shaft before assembly of the shaft 
coupling. 
 
Abrasion & Entrapment Hazard 
The cooling fan MUST be guarded. 
Installers of pumps must provide and fit a 
suitable guard, this may be integral with the 
coupling guard provided that an average air 
velocity of 5m/sec at 2000rpm is achieved. 
 
 
 
Care must be taken to ensure that the air 
entering the fan does not exceed 40 deg C. 
Further details of suitable arrangements are 
available SPP Pumps Limited. 
 
ATTENTION
ATTENTION
