Installation and Operational Instructions for BRE250 and BRE400
ROBA-stop
®
-M brake Type 891.
0_ _._
Sizes 250 and 500
(E070 09 203 001 4 EN)
31/10/2019 TK/MW
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 20 of 20
your reliable partner
Malfunctions / Breakdowns
Malfunction
Result of Malfunction
Possible Causes
Solutions
The brake must always be dismantled in order
to remove damage and malfunctions.
Damaged parts must be replaced in order to
solve the respective problem.
The brake must be cleaned before re-installa-
tion.
Slipping;
permanent grinding of
the brake under load;
increase in friction
work
Too low
Braking torque
Brake run-in procedure not carried
out
Carry out a run-in procedure
Do not carry out regular condition-
ing
Carry out conditioning of the friction pairing
Incorrect dimensioning
Check the required braking torque
Incorrect spring configuration
Check the spring configuration; have the brake
checked at the place of manufacture
Drop in braking torque
Excessive wear on the rotor
Wear inspection
Changes to the friction behaviour
on the friction lining due to the
maximum sliding speed being ex-
ceeded
Check for correct wiring, switching times and di-
mensioning
Changes
in braking torque
Unpermittedly high friction work,
squeaking, type and quality of the
counter friction surface
Check for correct wiring, switching times and di-
mensioning
Corrosion on the counter friction
surface
Check the brake for corrosion
Ambient influences, oil,
Water, cleaning media,
condensation formation
Check protection against environmental influences
Type and quality of the counter
friction surface
Check the counter friction surface
Extremely low
friction speeds
Check the dimensioning
Brake cannot be re-
leased
Excessive pull-in distance
due to unpermitted wear
Wear inspection; replace the rotor
No voltage connection
Check the voltage connection
mayr
®
will take no responsibility or guarantee for replacement parts and accessories which have not been delivered by
mayr
®
, or for damage resulting from the use of these products.
