Installation and Operational Instructions for
ROBA-stop
®
-Z Type 892.101.0
Size 125
(E073 01 046 000 4 EN)
18/05/2022 TK/HW/SU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 15 of 16
www.mayr.com
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Maintenance
ROBA-stop
®
–Z brakes are mainly maintenance-free. The friction
lining pairing is robust and wear-resistant. This ensures a
particularly long service lifetime of the brake.
However, the friction lining is subject to operational wear on
frequent EMERGENCY STOP braking actions. Normally, such
occurrences are recorded and saved by the elevator control,
or they require the intervention of qualified personnel. When
carrying out this maintenance work (especially when taking DIN
EN 13015 Appendix A into account), the causes of the
malfunction must be determined, assessed and removed by
specialist personnel. Causal events such as the air gap can be
checked and respective measures can be taken.
The brakes on the elevator system must be maintained and
repaired by a
specialist employee
, taking into consideration the
type and intensity of use of the system.
The following inspections / tests are to be conducted within the
scope of the defined elevator maintenance interval during
maintenance and repairs.
1. Visual inspection
Inspection of condition in accordance with the regulations
Brake rotors: in particular the exterior appearance of the
brake surfaces
- wear
- free of oil / lubricants
- sticking of linings
2. Tightening torque inspection of the fixing screws on the
brakes. If the brake fixing screws are covered with sealing
lacquer, a visual inspection for damage of the sealing is
sufficient.
3. Inspection of the air gap – braked
4. Inspection of toothing backlash from the splined motor shaft
to the rotors (5 and 6)
Max. permitted toothing backlash 0.3°
5. Running noise (brake rotors) during operation
Attention:
Permanent grinding of the rotors can lead to
overheating / damage to the brake linings, and therefore to a
drop in braking torque. If such indications are present, it is
essential that the braking torque is checked and the rotors
replaced if required independent of the inspection or the
determined wear value!
6. Braking torque or delay inspection (individual brake circuits)
at least once per year (within the scope of the maintenance /
main inspection)
In order to inspect the wear condition of the
rotors (5 and 6), please measure the air gap
"a", see Fig. 4.
If the brake limit air gap (1.0 mm) has been
reached, meaning that the friction linings are
worn down, the braking torque is lost and the
rotors (5 and 6) must be replaced.
Brake de-installation is carried out by following
the instructions in the section Installation (page
9) backwards.
7. Hand release function inspection.
Automatic resetting of the hand release to its
initial position (after actuation) must be given.
Replacing the Rotors (5 and 6)
Before Replacing the Rotors
Cleaning of the brake.
Please observe the section “Cleaning the
Brake”, see below.
Measure the rotor thickness “new condition” (nominal
dimension
8
-0.05
mm).
Rotor (5 and 6) replacement is carried out by following the
Installation section (page 9) backwards.
DANGER
The drive brake must be load-free on hoist
drives. Otherwise there is a danger of load
crashes!
Information on the Components
The
friction material
contains different inorganic and organic
compounds, which are integrated into a system of hardened
binding agents and fibers.
Possible hazards:
No potential dangers have been recognized so far when the
brake is used according to its intended purpose. When grinding in
the brake linings (new condition) and also in case of
EMERGENCY STOP braking actions, functional wear can occur
(wear on the friction linings); on open brake designs, fine dust can
be emitted.
Classification: Hazardous property
Attention: H-classification: H372
Protective measures and rules of behavior:
Do not inhale dusts.
Vacuum the dusts at the point of origin (tested suction devices,
tested filters acc. DIN EN 60335-2-69 for dust classes H;
maintenance of the suction devices and filter replacement at
regular intervals).
If local dust suction is not possible or is insufficient, the entire
work area must be ventilated using appropriate technology.
Additional information:
This friction lining (asbestos free) is not a dangerous product in
terms of the EU Directive.
Cleaning the Brake
Do not clean the brake using compressed air,
brushes or similar devices!
Wear safety gloves / safety goggles.
Use a suction system or wet towels to clean off the brake
dust.
Do not inhale brake dust.
In case of dust formation, a dust mask FFP 2 is
recommended.
