Sky Climber
ZEABORN GUIDELINES
- Page 31 -
18.11.2020 Version 1
5.4.1.3 GROUP 3 - FREEZING (0° C and below day/nigh t)
Temperature of 0° C and below without the presence of moisture do not adversely affect the Sky Lock
brake. However, if the work environment of either Group 1 or 2 changes to include freezing temperature
and sufficient moisture to form ice inside the Sky Lock brake, there is a possibility that the unit will fail to
function as intended, with resultant potential danger to the user.
Under these circumstances the operator must take reasonable precautions to prevent moisture from
entering the Sky Lock brake. To ensure that the unit is functioning properly, it should be
inspected/functionally checked at the beginning of each work shift and a minimum of every two hours
thereafter during the course of the workday. Should the Sky Lock brake malfunction when being
inspected, it can be assumed that the unit is frozen. The Sky Lock overspeed brake should be thawed
out of the Sky Lock brake with pressurised dry air.
WARNING: When using compressed air, be sure to wear safety glasses.
Then pour approximately 1 cup of alcohol into the entrance guide of the Sky Lock brake. This procedure
should clear the moisture from the inside of the Sky Lock brake and return it to a condition which will not
be adversely affected by below freezing temperature, unless subjected to additional moisture. To
confirm continued acceptable operation, the Sky Lock brake must be inspected and functionally checked
every two hours as noted above.
5.4.2 Inspecting Sky Lock overspeed brake
The following inspection procedures are for the Sky Lock (with external trip knob, 25 m/min. tripping
speed).
WARNING: If the Sky Lock overspeed brake fails any of the following inspections, it must be
replaced at once.
5.4.2.1
Inspecting “trip” Performance of Mounted Sky Lock
Use following procedure to test the Sky Lock brake prior to reeving.
1) Insert the end of a wire rope through the Sky Lock.
2) Support the wire rope and Sky Lock in a vertical position. Let the Sky Lock drop down the wire rope.
The accelerating brake should trip the mechanism, causing it to lock onto the rope before the brake
falls more than 10 cm.
3) Reset the Sky Lock brake and repeat this procedure two times. If the Sky Lock brake does not trip
and lock onto the rope before falling 10 cm during any test, it must be replaced.
Use the following procedure to test the Sky Lock brake after reeving
WARNING: Platform must be supported on a safe surface.
