S pumps, range 58
25
Product description
Features
SmartTrim
On conventional pumps, maintaining factory-set
impeller clearance is a time-consuming and costly task.
The pumps need to be disconnected from the pipework
and to be totally dismantled, and new parts need to be
mounted in order to maintain full pumping efficiency.
Not so with Grundfos SmartTrim!
All Grundfos heavy-duty channel-impeller pumps,
whether for submerged or dry installation, are equipped
with the unique SmartTrim impeller clearance
adjustment system. This enables you to easily restore
factory-set impeller clearance and maintain peak
pumping efficiency. All you need to do is to tighten the
adjustment screws on the exterior of the impeller
housing. This can be done on site, quickly and easily,
without dismantling the pump and without using special
tools.
A:
With Grundfos SmartTrim impeller clearance
adjustment system
B:
Without impeller clearance adjustment system
SmartSeal
For pumps with 10" discharge or larger, the Grundfos
SmartSeal auto-coupling gasket mounted on the pump
discharge flange provides a completely leak-proof
connection between the pump and the base unit of the
auto-coupling system. This optimises the efficiency of
the entire pumping system and keeps operating costs
at a minimum.
Ball bearings
The bearings are greased for life.
Main bearings:
Double-row angular contact ball
bearing
Support bearings:
Single-row deep-groove ball
bearing.
Shaft seal
The pumps have a shaft seal consisting of a primary
and a secondary shaft seal.
The material combination of the primary shaft seal of all
pump types is silicon carbide/silicon carbide. For the
secondary shaft seal, the mateial combination is silicon
carbide/carbon.
The shaft seals are placed in the oil chamber of the
pump. The oil chamber provides reliable sealing
between the pumped liquid and the motor.
The shaft seals have no springs or other parts in direct
contact with the pumped liquid. This prevents rags and
fibres from getting caught. The shaft seals are
bidirectional, meaning that they can operate in either
direction thus allowing for opposite rotation caused by
back-flow of liquid through the pump.
Motor
The motor is a watertight, totally encapsulated motor
with:
• insulation class H (356 °F (180 °C))
• temperature rise class F (221 °F (105 °C))
• enclosure class IP68.
For motor protection and sensors, see section
Sensors
below.
Power cables
Standard cable
EMC cable
Control cable
The cables are 40 ft (15 m) long as standard. Other
cable lengths are available on request. See section
List
of variants
on page 13.
The number and dimension of cables depend on the
motor size.
T
M
04 23
91 25
08
Factory-set impeller clearance
Efficiency drop in %
Years
B
A
0
3
6
9
12
15
1
2
3
4
5
Cable type
[mm
2
]
Outer cable diameter
[inch (mm)]
Bending
radius
min.
max.
[inch (mm)]
4 x 6
0.62 (15.7)
0.68 (17.2)
4.3 (110)
4 x 10
0.82 (20.9)
0.92 (23.4)
5.5 (140)
Cable type
[mm
2
]
Outer cable diameter
[inch (mm)]
Bending
radius
min.
max.
[inch (mm)]
3 x 6
0.54 (13.6)
0.6 (15.2)
3 (76)
3 x 10
0.7 (17.8)
0.78 (19.8)
3.9 (99)
Cable type
[mm
2
]
Outer cable diameter
[inch (mm)]
Bending
radius
min.
max.
[inch (mm)]
7 x 1.5
0.57 (14.4)
0.63 - 0.65
(16.0 - 16.4)
4 (100)
S_Range_58-60Hz.book Page 25 Thursday, July 8, 2010 2:30 PM
