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Product data
SQFlex
IO 100 switch box
The IO 100 is an on/off switch box designed as a posi-
tive disconnect for the system voltage supply.
IO 101 switch box
The IO 101 is an on/off switch box designed as a posi-
tive disconnect for the system voltage supply.
The IO 101 is used with SQFlex systems supplied by
solar panels and with a generator supply backup.
IO 102 breaker box
The IO 102 is an on/off switch box designed as a posi-
tive disconnect for the system voltage supply.
The IO 102 is used with wind-powered SQFlex systems
or with SQFlex systems powered by wind and solar
energy.
IO 102 acts as a brake which makes it possible to slow
down or stop the wind turbine.
CU 200 control unit
The CU 200 control unit is a combined status and
control unit for the SQFlex pump system. Furthermore,
the CU 200 enables connection of a level switch placed
in a water reservoir or similar tank.
Solar modules
Grundfos’ solar modules have been developed espe-
cially for the SQFlex system. The solar modules are
equipped with plugs and sockets enabling easy and
simple installation.
Grundfos offers data sheets for available solar
modules. For further information please contact your
local Grundfos Company.
Generator
If the electricity supply from its primary source of
energy is temporarily insufficient, the SQFlex system
can be supplied by a generator. The generator can
either be diesel or gasoline driven.
Batteries
The SQFlex system can be supplied by batteries with a
voltage supply of 30 - 300 VDC, minimum current 7A.
Type keys
Type key for helical rotor pumps
Type key for centrifugal pumps
Pumped liquids
The SQF pumps are designed for pumping thin, clean,
non-aggressive, non-explosive liquids, not containing
solid or long-fibred particles larger than sand grains.
Sand content:
max. 50 ppm.
A higher sand content will reduce the pump life consid-
erably due to wear.
pH:
5 - 9
Liquid temperature:
32°F to +104°F
The pump can run at free convection (~ 0 ft/sec) at max.
+104°F.
Salt content
The table below shows the resistance of stainless steel
to Cl
-
. The figures in the table are based on a pumped
liquid with a pH-value of 4 - 9.
Example
6
SQF
-2
x
Rated flow at 3000 rpm [US
GPM]
Type range
Number of stages
Blank = Stainless steel
AISI 304
Example
25
SQF
-3
x
Rated flow at 3000 rpm [US GPM]
and pump generation
Type range
Number of stages
Blank = Stainless steel
AISI 304
Stainless steel
Cl
-
content
[ppm]
Liquid
temperature
[°F]
EN/DIN
AISI
1.4301
304
0 - 300
< 104
300 - 500
< 86
