Exterior Preservation; Exterior­preservation Procedure; Operation; Heating Element - Siemens FLENDER PLANUREX 2 PBUC Series Assembly And Operating Instructions Manual

7.4.2

Exterior preservation

7.4.2.1 Exterior­preservation procedure
• Clean the surfaces.
For separation between the sealing lip of the shaft­sealing ring and the preservative agent, the
shaft should be brushed with grease in way of the sealing lip.
• Apply preservative agent.
For preservative agent see table 5 in item 4.4.2!
8.

Operation

Observe the instructions in section 3, "Safety instructions", in section 9, "Faults, causes and remedy", and
in section 10, "Maintenance and repair"!
8.1

Heating element

At low temperatures it may be necessary to heat the gear oil before switching on the drive unit or even
during operation. In such cases heating elements may be provided, depending on the order, that convert
the electrical energy into heat which is conducted to the surrounding oil. The heating elements are located
in protective tubes inside the housing, thus making it possible to replace them without draining off the oil.
Complete immersion of the heating elements in the oil bath must be guaranteed.
The heating elements are controlled by a temperature monitor or a Pt 100 resistance thermometer which
emits a signal when minimum and maximum temperatures are reached; the signal requires amplification.
For a detailed illustration of the gear unit and the position of the add­on parts, please refer to the drawings
of the gear­unit documentation.
Never switch the heating element on unless complete immersion of the rod heater in
the oil bath is ensured. Fire hazard!
The max. heating output of 0.8 W/cm
not be exceeded.
Operation and maintenance must be in accordance with the operating instructions specified.
For technical data, refer to the list of equipment.
8.2 Oil­temperature measurement
Depending on the order specification, the gear unit may be fitted with a Pt 100 resistance thermometer for
monitoring the oil temperature in the sump. In order to measure the temperatures or temperature
differences, the Pt 100 resistance thermometer should be connected to a suitable instrument provided by
the customer. The thermometer has a connection head (protection type IP54) for the wiring.
A two­conductor circuit is fitted by the manufacturer. However, the customer may fit his own three­ or
four­conductor circuit if required.
A certain level of oil is necessary for reliable temperature measurement. For this reason, the
resistance thermometer is not suitable for use with labyrinth seals.
For a detailed illustration of the gear unit and the position of the add­on parts, please refer to the drawings
of the gear­unit documentation.
Operation and maintenance must be in accordance with the operating instructions specified.
For technical data, refer to the list of equipment.
2
on the outer surface of the heating element must
BA 9213 en 03/2012
39 / 55