Kone MX20 - Category 5 Testing of Full Stroke Car Oil Buffers

KONE Maintenance Method
MX10 / MX20 MCP Procedures - ASME A17.1-2013 / CSA B44-13
© 2014 KONE Corporation PSK8-604-MX10/MX20
All rights reserved.
98 (-) 2014-12-15
8.6.4.20.3: OIL BUFFERS
Category 5 testing of full stroke car oil buffers
Test is not normally required for elevators with spring or neoprene buffers.
If testing an elevator equipped with reduced stroke buffer, refer to section: Perform buffer test,
car: reduced stroke buffer.
1) If there is a counterweight safety, tie down
the counterweight safety lever to prevent
counterweight safety from engaging.
2) Place a full load on the car.
3) Drive the elevator to the top terminal floor.
4) Put the elevator on inspection.
5) Disable hall calls and car calls by sliding
LCECPU switches 263 and 261 to left.
Note: Ensure no passengers are in the car.
6) Temporarily jumper bottom 136:N switch. (LCEADON2 XH23/1-3). Note: Overrides ETS
switch.
• If using ETSL, temporarily remove XME and XCT connectors from ETSL board1, so that
ETSL boards do not see the car (OSG) encoder or motor encoder signals. Note: Overrides
ETSL switch.
7) Activate Car Buffer Test.
• Set UI menu 6-72-4. Note: Overrides normal stopping means.
8) Back out of menu 6 until car position displays on User Interface.
9) Take elevator off inspection.