KONE Maintenance Method
MX10 / MX20 MCP Procedures - ASME A17.1-2013 / CSA B44-13
© 2014 KONE Corporation PSK8-604-MX10/MX20
All rights reserved.
44 (-) 2014-12-15
Maintenance procedures for OL100 & OL120 Overspeed Governors
Governor components
1. Flyweight
2. Spring
3. Eccentric wheel
4. Flyweight catch
5. Rope brake device
6. Overspeed contact
7. Trip wheel
8. Contact plate
9. Tripping lever
Maintenance Procedures and Safety Measures
Maintenance Procedures
1) Cleaning (especially the flyweight springs
and rope brake)
2) Check the condition of the flyweights and
the springs
3) Check the operation of the overspeed
contact
4) Check the operation of the tension weight
contact (if provided)
5) Check the condition of the (Main) bearings
6) Check the wear of the rope groove
Safety Measures
• All safety measures for normal elevator
maintenance must be implemented and
local safety regulations assimilated into
local instructions with due regard to risk.
• Activate the emergency stop switch in
control panel or on machine (if provided) to
prevent unexpected movement of the car.
• Do not lubricate the overspeed
governor. Lubrication may reduce the
braking force.
• After every operation of overspeed
governor and safety gear check that
overspeed governor
(and safety gear) is operational.
• Do not adjust or replace any parts of the
overspeed governor.
If the overspeed governor is not properly
adjusted, please contact the factory.
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