7 Inspection and maintenance
01.2019 45
7.17 Trolley
Wheels, wheel drive and runway
• Visual inspection of wheels for wear.
• Visual inspection of runway beam for wear.
• Inspection of flanges for wear.
Danger of material damage
If any one of the limits for wear d1, b2 is attained, the part must be replaced.
Ensure that the trolley runs smoothly over the whole distance.
7.18 Operating hours counter
The integrated operating hours counter measures the hoisting time only, thus the value
measured must be doubled.
Example: 123 h measured; 246 h to be recorded
The mechanism (motor and gear; not applicable to wearing parts) of the ST chain hoist is
classified according to ISO. The theoretical full load lifetime in hours shown opposite (D)
is applicable for normal hoist applications.
If the full load lifetime (D) minus the lifetime expired is nought, the wire rope hoist must
be overhauled by the manufacturer.