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normal greasing interval. During this time, very carefully monitor the bearing locations involved.
Then resume the normal greasing intervals.
NOTICE
Damage due to mixing grease types
If you mix greases and oils with different soap or oil bases, then the lubricating properties
may no longer be guaranteed.
Mixing low-temperature grease with normal temperature grease can cause lumps to form in
the lubricant. The consequence can be damage to the roller bearings due to overheating.
Never mix greases that have different thickening agents and different base oils.
9.1.7.7
Cleaning the cooling air passages
● Regularly clean the cooling air passages through which the ambient air flows, e.g. using
9.1.7.8
Maintenance and repair for machines of protection type "Ex d"
The machine marking based on IEC / EN 60079–0 was added with the "X" symbol.
Maintain the special conditions for repairs. The gap dimensions for the electric machine do not
comply with the standardized values in IEC / EN 60079–1. For repair work, obtain the gap
dimensions of the electrical machine from the manufacturer.
Perform maintenance, repair and modification work on explosion-protected machines in strict
compliance with the corresponding national health and safety legislation, the safety
instructions and descriptions in the general maintenance instructions.
Work influencing explosion protection must be carried out by the manufacturer or by a specialist
workshop for electrical machinery authorized by the manufacturer. This includes the following
operations, for example:
● Repairs to the stator or rotor windings and to the terminals
● Repairs to the ventilation system
● Repairs to the bearings
LOHER CHEMSTAR 1PS5
Operating Instructions 03/2014
dry compressed air.
NOTICE
Cleaning intervals depend on the degree of fouling
The frequency of the cleaning intervals depends on the local degree of fouling. The
machine will overheat if the cooling air ducts are polluted and the cooling air cannot flow
without obstruction.
Regularly check for pollution, and clean the cooling air ducts through which the ambient
air flows.
Maintenance
9.1 Inspection and maintenance
93
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