Spec Sheet

Grundfos
2001 Butterfield Rd, Ste 1700
Downers Grove, IL 60515
The name Grundfos, the Grundfos logo, and be think innovate are registered trademarks owned by Grundfos Holding A/S or Grundfos A/S, Denmark. All rights reserved worldwide. L-SQ-SL-001 10-16
www.grundfos.us
www.grundfos.ca
www.grundfos.mx
HOW THE SQ PROTECTS AND REDUCES WEAR
VOLTAGE HANDLING
Increased winding temperature caused by undervoltage
often results in reduced lifetime. The SQ motor is protected
against over and undervoltage, and voltage fluctuation
generally.
DRY RUNNING PROTECTION
The SQ pump is factory pre-set based on minimum power
consumption, and dry-running protection is activated
40 seconds after power is connected to allow priming of the
pump. When there is no water in the hydraulics, power
consumption is reduced. The SQ stops automatically when
below the dry run power limit and restarts automatically
within 5 minutes after cut-out.
ADDED FEATURES THAT PROTECT YOUR SQ PUMP
Compared with a conventional 4” pump and motor, the
added features of voltage handling and soft start, power
supply, and dry running protection offer simplicity and
reliability for your installation.
TECHNICAL DATA
• Flow up to 36 gpm (8.2 m
3
/h)
• Head up to 780 ft (180 m)
• Nominal power supply: 1x200-240 V – 50/60 Hz
• Max. acceptable media temp: 86°F (40°C) when flow past motor
• Pump diameter: 2.9 in. (74 mm) Min. well diameter: 3 in. (76 mm)
• Weight (min./max.): 10.4-14.1 lbs (4.7-6.4 kg)
• Thread connections: RP 1¼˝ / RP 1½˝
• Materials (Stainless steel): DIN W.-Nr. 1.4301/1.4401, AISI 304/316
• The SQ pump can be installed vertically or horizontally
• Built-in electronics
• Permanent magnet motors
• Torgue exceeds that of traditional motors
• Higher efficiency than traditional motors
SOFT START
Soft start ensures a low starting current with a smooth and
steady acceleration. This offers excellent starting reliability at
low voltage, prevents overload of the mains power, reduces
water hammer in the pipe, and reduces pump wear. Low
current draw and soft start allows use of smaller gauge wire
compared to traditional 4” motors. This can reduce the
overall cost of installation.
POWER SUPPLY
Low ampere usage makes it
possible to connect more
appliances to the same fuse group
or reduce the size of the power
line. Small generators can be used
with SQ.
Grundfos recommends to use a generator with a capacity
50% higher than rated pump power consumption.
The SQ pump provides several features that simplify your installation and add reliability to the system.
150 180 200
207 V 244 V
Conventional AC Motor
SQ SQ
220 240 260 280 315
Supply voltage [V]
Current
Time
Soft start
Direct online (DOL)
2 sec.
Properties
& features
SQ
Conventional
AC motor
Overvoltage/undervoltage
protection
Yes No
Integrated dry running
protection
Yes No
Over temperature protection Yes No
Overload protection Yes No
Start function with high torque
and without starter box
Yes No
H
Q
Q
P
P1
P
cut-out
H
Q
Q
P
P1
P
cut-out
LSQSL001_SQ Range Leaflet.indd 2 10/26/2016 9:21:10 AM