OPERATING MANUAL 6. SERVICING
ThyssenKrupp Aufzugswerke GmbH 44 Issue 06.2004
• Repeat test at 2. brake circuit.
Deceleration values:
Minimum deceleration for one brake circuit 0.4 m/s²
Minimum deceleration for both brake circuits 1.0 m/s²
Attention: after testing the brake, remove the continuous control voltage at
the 2. brake ciruit and establish the original condition (both brakes acting at
the same time). Enable the release control switches at the brakes again.
Simple testing of braking deceleration without measuring device:
(this inspection method only applies to travel heights ≥ 7m and control point
observable from brake operation point.)
Inspection sequence:
• The details described in „a“ are to be observed.
• Provide terminal for continuous power supply at brake circuit of the 2.
brake coil.
Move the fully loaded car at least two landings above the bottom-most
landing.
• Mark ropes at the height of the control point.
The control point shall be easily visible from the brake operation position.
(Marking at bracket height, for example).
• Move the car upwards to the nearest landing.
• While testing, apply continuous control voltage at 2. brake.
Note: voltage must be present even with the main switch disabled. If not,
both brakes will become effective.
• Move fully loaded car downwards at normal speed. Observe control point
and ropes from brake operation position.
• Switch off main switch as soon as marking reaches the control point.
• Measure distance between marking and control point. This distance
corresponds approximately to the stopping distance of the tested brake
circuit.
• Remove continous operating voltage and apply at tested brake coil.
• Compare stopping distance result and reference value.
Stopping distance
The max. stopping distance for single brake circuit shall not exceed:
1.8 m for installations with V
N
1.0 m/s; 3.5 m for installations with V
N
1,6 m/s;
5.0 m for installations with V
N
2.0 m/s.
(These values only apply to simple testing)
• Repeat described testing for 2. brake circuit.
Attention: when the brake is tested, the original switching condition is to be
established (operation of both brake coils at the same time and connection of
brake test switch).
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