5.52.420.00.01.07
21
These conditions have to be written down in the test book.
The owner/user is responsible to make sure that these conditions are observed.
13.2 Periodic checks
Independently from the regulations of the individual countries, lifting devices must be checked at least yearly
by a qualified person or licensed qualified person regarding its functional safety.
13.2.1 Components to be checked
The following must be checked:
Dimensions of load chain, load hooks, pawls, bolts, ratchet wheels, brake linings.
The dimensions must be compared to the dimensions in the tables.
A visual inspection for deformations, cracks and corrosion must be carried out.
13.2.2 Inspection intervals
at
commissioning
daily
checks
1st maintenance
after
3 months
Inspection
and
maintenance
every
3 months
Inspection
and
maintenance
every
12 months
Inspection
and
maintenance
every
36/60 months
Inspection of the equipment by
a qualified person
(periodic inspection)
X
screw connections X X
brake function - brake discs X X
overload protection as slipping clutch
(if relevant)
X X
overload protection by current cut-off (electric hoist) (if relevant) X X
overload protection by air relieve valve
(pneumatic hoist) (if relevant)
X X
load chain, clean and oil X X*) X X
load chain, elongation and wear X
load hook, cracks and deformation X
Bearings of chain pulleys,
check and lubricate
X
Hoist gear, oil change X*)
Trolley wheels, wear X
Trolley wheels, lubricate toothed wheels X*) X*) X*)
*) see chapter "maintenance"
13.3 Checking the load chain
CAUTION!
The load chain must be tested over its entire length!
The measure of the load chain must be carried out especially in the areas which are subject to the highest
wear. Through the lifting movement, these are the contact points of the chain with sprocket wheel and
deflection pulleys.
acc. DIN 685-part 5
L11 = pitch increase over 11 chain links
L1 = pitch increase over 1 chain link
Illustration 18
dm= detected link diameter (d1+d2)/2
Illustration 19
Chain dimensions
Dimension
mm
Chain dimension
5x15 7x21 9x27 11,3x31 16x45 23,5x66
L11 171,4 238,8 300,8 348,1 505,6 743,0
L1 16,0 22,4 28,1 32,7 47,4 69,5
dm 4,6 6,5 8,2 10,2 14,4 21,2
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