Goulds Pumps ICM - IOM - Manual (Page 19)

Installation and Operating Instructions
Model ICM/ICMP, for life grease lubrication
9330-050-en Revision 05
TM 5409 MPE/Re/Wm Page 11 Date 03/2003
5 Installation
5.1 Safety regulations
Equipment which is operated in potentially
explosive areas must satisfy the explosion
protection regulations.
People with a pacemaker are at risk from the
strong magnetic field of the magnetic drive. It
may be life-threatening for them to stay at a
distance of less than 50 cm to the pump.
5.2 Installation of pump/unit
The structural work must be prepared in accordance
with the dimensions in the installation drawing.
Method of installation: on a grouted base plate and
firm foundation
¾
Align base plate on the ground foundation.
¾ Insert foundation bolts and grout base plate.
¾ Do not tighten the foundation bolts uniformly and
firmly until the mortar has set.
5.3 Alignment of pump - coupling -
motor
The following information is of a general na-
ture. If necessary, special notes of the cou-
pling manufacturer are to be observed.
After attachment of the base plate on the
foundation and connection of the pipes, the
alignment of the coupling must be carefully
checked and, if necessary, the unit re-aligned with the
motor.
¾
A coupling check and possible re-alignment is also
necessary if the pump and motor are supplied on a
common base plate and aligned.
¾ Prior to alignment undo the support bracket 183
and then tighten it without stress.
¾ The pump is to be aligned in all directions using a
spirit level (on shaft/discharge nozzle) (admissible
position deviation max. 0.2 mm/m).
¾ A distance depending on the coupling used is to
be observed between the pump and motor shafts.
See installation drawing.
¾ Use supports in the direct vicinity of the bolts foun-
dation/base plate.
Ensure that the unit cannot be started during
work without the coupling guard.
5.4 Piping
Before the pump is installed, both the suction and
supply lines as well as the discharge line are to be
cleaned.
Dirt or damage to the sealing surfaces is best
avoided if the flange covers remain on the flanges
until just before installation.
Use flange gaskets suitable for the medium.
The screw tightening torques in Section 1.2 are to
be observed for tightening the flange screws.
5.4.1 Nominal size
The operating design point of a centrifugal pump lies
at the intersection of the pump curve and the pipe
curve, see Fig. 2. The pump curve is provided by the
pump manufacturer. The pipe curve is determined
using diagrams or PC programs.
Under no circumstances can the nominal size of the
piping be derived from the connected nominal size of
the pump.
The pipe nominal size can also be determined using
the flow rate as a rough guide.
v m s
Q m s
A m
3
2
( / ) =
( / )
( )
The velocity in the suction line should not exceed 2.0
m/s and 5.0 m/s in the discharge line.
When determining the suction line nominal size, the
NPSH value (net positive suction head) must also be
observed. The NPSHR value required for the pump
is specified in the data sheet.
The NPSHR available in the plant
should be at least 0.5 m higher than
the NPSHR required for the pump.
Otherwise, this will lead to a drop in the delivery
head, cavitation or even failure of the pump.
Fig. 2