8.2.1
Checking the air gap
Figure 8-2-1-01 - Air gap measurement position
Figure 8-2-1-02 - 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: 0.8 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.
8.3
Spare parts
Spare parts and accessories not supplied by ZIEHL-ABEGG SE have not been tested or approved by
us. These parts may be lower in function or quality and there fore can reduce functionality or safety of
the elevator machine installation. Will assume no liability or guarantee for damages caused by
ZIEHL-ABEGG SE spare parts that are not approved.
Available spare parts:
1. Absolute encoder
2. Complete brake
2.1 Brake rotors with O-rings
2.2 Micro switch for brake
2.3 Inductive proximity switch for brake
3. Traction sheave
4. Rope guard
5. Rope retainer
6. Installation of forced ventilation side B
7. Forced ventilation installation on top
Translation of the original operating instructions
ZAtop SM250.45B
Service and maintenance
A-TBA17_04-GB 2023/28 Index 004 Part.-No. 01013409-GB (EU-BD 760/1)
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