FLYGT 3085 - 3.2 Monitoring equipment; 3.3 The data plate

Position Denomination Description
2 Impeller There are multiple types of impellers. For information about the pumps
impellers, see Parts List.
3 Mechanical seals One inner and one outer seal in a combination of materials:
• Aluminium oxide Al
2
O
3
• Silicon carbide RSiC
• Corrosion-resistant cemented carbide WCCR
For information about the pumps mechanical seals, see Parts List.
4 Oil housing The oil housing includes a coolant that lubricates and cools the seals; the
housing acts as a buffer between the pumped fluid and the drive unit.
5 Main bearing The bearing consisting of a two-row angular contact ball bearing.
6 Motor
For information about the motor, see Motor data (page 67)..
7 Stator housing The pump is cooled by the ambient liquid/air.
8 Support bearing The bearing consisting of a single-row ball bearing.
3.2 Monitoring equipment
The following applies to the monitoring equipment of the pump:
• The stator incorporates three thermal contacts connected in series that activate the
alarm and stops the pump at overtemperature
• The thermal contacts open at 125°C (257°F).
• Ex-approved pumps must have thermal contacts connected to the control panel.
• The sensors must be connected to either the MiniCAS II monitoring equipment or an
equivalent equipment.
• The monitoring equipment must be of a design that makes automatic restart
impossible.
• Information in the junction box shows if the pump is equipped with optional sensors.
Optional sensors
FLS
FLS is a miniature float switch for detection of liquid in the stator housing. Due to its
design it is best suited for pumps in a vertical position. The FLS sensor is installed in
the bottom of the stator housing.
CLS CLS is a sensor for detection of water in the oil housing. The sensor initiates an alarm
when the oil contains approximately 35% water. The sensor is installed in the bearing
housing/bearing holder with its sensing part in the oil housing. The CLS sensor is not
applicable to Ex-approved pumps.
NOTICE:
The CLS sensor body is made of glass. Handle the sensor with care.
One CLS and one FLS sensor can be used in the same pump, if they are connected in
parallel.
3.3 The data plate
The data plate is a metal label that is located on the main body of the products. The data
plate lists key product specifications. Specially approved products also have an approval
plate.
3 Product Description
12 Flygt 3085 Installation, Operation, and Maintenance Manual