Installation and Operational Instructions for
ROBA
®
-ES Couplings Type 94_._ _ _._ Sizes 14
– 65
(B.9.6.EN)
11/03/2022 TK/GH/GC/MD
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 24 of 29
Guidelines and Directives for Operation in
Areas Where There is a Danger of Explosion
Initial Operation
Steel hubs and steel shrink disks have been zinc phosphated
manufacturer-side to form a basic corrosion protection. All other
components are untreated.
The hubs acc. DIN 69002 are blank and oiled.
The coupling must only be used in areas protected from the
weather. Additional corrosion protection is required for use in the
open air or if the device is subject to weather conditions. Severely
corroded coupling components mean a danger of ignition.
The functional components of the coupling must not stick together
as a result of paint or other sticky media, and electrostatic
charges must not be caused (see DIN EN ISO 80079-36 6.7).
The ROBA
®
-ES coupling must be axially secured onto the drive
and driven shaft. Correct securement must be checked before
initial operation.
The shafts and keys must be positioned in the couplings so that
the neighboring coupling parts do not contact each other (Fig.
21).
Fig. 21
In the key design, please secure the locking set screw with
sealing lacquer, e.g. Loctite 243.
Layers of dust on the coupling or operation in piles of dust is not
permitted.
It is essential that the distance dimension "E" acc. Fig. 15 and
Table 14 is adhered to. If the two coupling parts touch, there is a
risk of ignition caused through friction.
In particular for vertical applications with
sleeves, compliance with dimension "E" must
be monitored and checked as part of the
regular maintenance work (for maintenance
intervals, please see page 21).
It cannot be ruled out that the sleeve may lower
during operation due to micro-movements,
causing the sleeve and hub to come into
contact.
Attention: Danger of ignition!
The rotating coupling components must be protected against
contact and against foreign body impacts.
Please mount a suitable cover onto the coupling.
We recommend using a coupling cover made of rustproof steel.
The design must be arranged in such a way that no deformations
occur by impacting parts which cause a rubbing of the cover at
the coupling (danger of ignition).
The distance from the cover to the rotating components must be
at least 5 mm.
The cover must be electrically conductible.
Covers made of aluminum are not permitted.
Maintenance and Inspection Intervals for
Couplings in
Areas Where There is a
Danger of Explosion
Please observe section Maintenance on page
21.
The maintenance and inspection intervals
stated on page 21 must be maintained:
Should any irregularities occur, the system
must be stopped independently of imminent
maintenance and inspection intervals, and the
cause of the malfunction must be determined
using the Malfunctions / Breakdowns Table.