Siemens FLENDER K DH Series, Руководство по сборке и эксплуатации, Страница: 82 / 109

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BA 5846 en 05/2015
7.2.8 Heating
The heating rods can be controlled by a temperature monitor which emits a signal when minimum and
maximum temperatures are reached; the signal requires amplification.
The gear unit is fitted with an oil­level monitoring device. This oil­level monitoring system checks the
minimum oil level of the gear unit, which is required for immerging the heating rod.
The signal must be wired so that, when the "Oil level too low" signal is given, the heating rods 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 a potentially explosive atmosphere through exposed heating elements
possible.
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.
Note
Be sure to observe the operating instructions of the oil­level monitoring device for operation and
maintenance.
The correct setting of the switch points must be checked (see item 5.10).
For technical data and control information, refer to the data sheet and/or the list of equipment.
7.2.9 Checking procedure
The following visual checks must be conducted and recorded when starting up:
□
Presence of "Ex" explosion­protection marking
□
Oil level
□
Leaktightness of the oil­cooling or oil­supply lines
□
Opening condition of the shut­off valves
□
Effectiveness of the shaft seals
□
Freedom of the rotating parts from contact
The tension pressures or pretensioning forces shown in item 6.3.2.2 must also be recorded in this
document.
Note
The record must be kept with these instructions.