The brake wear has to be checked with the brake closed, therefore:
"
Make sure that all moving parts have stopped, secure them mechanically if required!
"
Make sure that the elevator can not be moved from any other person than the one who does the
check!
8.2
Inspection intervals
During commissioning or
after the
fi
rst 3 months
every year
Distance of the rope guard
x
x
Check vibration isolation
The thickness of the vibration isolation must be the
same on the right and left.
x
x
Checking the air gap of the brake
x
x
Visual inspection of the mounting screws on the hous-
ing, brakes and traction sheave.
The locking compound must be free of damage.
x
x
Check the traction sheave if worn out
x
Check the microswitch/inductive proximityswitch
x
Table 8-2
Note: All
fi
xing screws on the housing, brakes and traction sheave are marked with locking varnish.
That means a loosened screw is optically visible. If a screw does get turned, it must be tightened
using the prescribed tightening torque, the old locking varnish needs to be removed and marking has
to be made again.
8.2.1
Checking the air gap
Figure 8-2-1-01 - Air gap measurement position
Figure 8-2-1-01 - Air gap measurement
1. The air gap "A" has to be measured three times at the circumference (see arrows) of both brakes.
The maximum value of the four has to be taken into account.
2. If the maximum value of the air gap "A" is exceeded on one of the magnets, it must be replaced
both brake rotors and the appendant O-rings.
Maximum admissible air gap "A" after wear: 0.9 mm!
Caution!
Feeler gauge do not introduce more than 10 mm into the air gap, to avoid damage to the
dampers of noise or deterioration by the springs.
Original operating instructions
ZAtop
–
model series SM250.60B
Service and maintenance
A-TBA20_02-GB 2032 Index 003
Part.-No. 01013399-GB (EU-BD 783)
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