8 Technical Reference
8.1 Motor data
Feature
Description
Motor type
Squirrel-cage induction motor
Frequency
50 Hz or 60 Hz
Supply
1-phase or 3-phase
Starting method
• Direct on-line
• Star-delta
• Soft starter
Maximum starts per hour
15 evenly-spaced starts per hour
Code compliance
IEC 60034-1
Voltage variation without overheating
±10%, if it does not run continuously at full load
Voltage imbalance tolerance
2%
Stator insulation class
F (155°C [311°F])
Motor encapsulation
Motor encapsulation is in accordance with IP68.
8.1.1 Thermal contacts, opening temperature
The table shows the opening temperature for the thermal contacts on products approved
for hazardous locations.
Temperature and
temperature class
Motor
3-phase
1-phase
125°C (257°F), T4
13-08-2BB
13-08-4BB
13-10-2BB
13-10-2BB
13-10-4BB
140°C (284°F), T3
13-10-4BB
8.2 Application limits
Data
Description
Liquid temperature
Maximum 40°C (104°F)
The pump can be operated at full load only if at least half the stator housing is
submerged.
The stainless steel version of the pump can be operated at full load only if the
complete stator housing is submerged.
Warm-liquid version: 70°C (158°F) maximum
Liquid density
1100 kg/m³ (9.2 lb per US gal) maximum
pH of the pumped media
5.5–14
Depth of immersion
Maximum 20 m (65 ft)
Other
For the specific weight, current, voltage, power ratings, and speed of the pump,
see the data plate of the pump.
8.3 Minimum permitted liquid level
In hazardous areas, this information is critical for the safety of the installation of this
product.
This pump can be partly submerged during operation, but it must be submerged to half
the drive unit length.
8 Technical Reference
58
Flygt 3069 Installation, Operation, and Maintenance Manual
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