Siemens FLENDER K SH Series - Explosion-Proof Heating Elements; Oil Level Indication

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BA 5846 en 05/2015
5.11 Heating element in "Ex"version
If heating elements are designed to be explosion-proof, the gear unit is additionally equipped with oil-level
monitoring by means of an oil-level limit switch. This monitoring system checks the oil level in the gear unit
for immersion of the heating elements (see item 5.11.1).
5.11.1 Oil-level monitoring of the heating elements
The gear unit is fitted with an oillevel monitoring device. This monitoring system checks the oil level in the
gear unit (minimum oil level for immersion of the heating elements at a standstill).
Wiring should be in such a way that, when the signal "Oil level too low" is given, the heating elements are
switched off. This ensures that the heating elements are not operated, if not completely immersed.
DANGER
Risk of explosion or fire
Fire hazard or risk of ignition of an explosible atmosphere through exposed heating elements.
Never switch on the heating elements, unless complete immersion of the heating elements in the oil bath
is ensured.
If heating elements are fitted afterwards, the maximum heating capacity (see table 7) on the outer surface
of the heating elements must not be exceeded.
For a detailed illustration of the gear unit and the position of the addon parts, refer to the drawings in the
gearunit documentation.
Note
Be sure to observe the operating instructions of the oillevel monitoring device for operation and
maintenance.
For technical data and control information, refer to the orderspecific data sheet or the list of equipment.
5.12 Indication of oil level
The gear unit is fitted with an oillevel indicator (oilsight glass, oillevel indicator with MIN and MAX marks
or dipstick with MIN and MAX marks) for visual oillevel checking at standstill. Checking of the oil level is
carried out after the oil has cooled down by looking through the oilsight glass or at the oillevel indicator
or at the dipstick.
For a detailed illustration of the gear unit and the position of the addon parts, refer to the drawings in the
gearunit documentation.