Operating manual
Explosion-protected variable speed drive RD11
1
03/2017
WE KEEP THINGS MOVING
ID 443006_en.00
en
www.stober.com
These operating instructions contain information about the
transport, assembly, commissioning and service of gear units
from STOBER. Observe the applicable documents of at-
tached motors and additional drive components.
1
Operation in accordance with its in-
tended use
Explosion-protected gear units from STOBER meet the re-
quirements of the ATEX Directive 2014/34/EU and comply
with the following standards:
•
EN 1127-1:2011-07
•
EN ISO 80079-36:2016-04
•
EN ISO 80079-37:2016-04
The gear units are intended for installation in commercial ma-
chines and systems. Intended use includes:
•
Use of the gear unit exclusively for the application that it
was designed for.
•
No modifications to the gear unit by the customer.
•
No overpainting of the gear unit housing (the increased
coating thickness can cause the gear unit housing to
become electrostatically charged).
•
Use of the gear unit only in the zone subject to explosion
hazard that corresponds to the identification on the ATEX
nameplate.
•
Use of the gear unit in the surrounding temperature range
Ta that is specified on the ATEX nameplate.
•
The maximum thickness of the dust deposit on the gear
unit may not be more than 5 mm according to EN 50281-
2-1.
•
No overload of the gear unit with regard to the maximum
permitted speeds and torques that are specified in the or-
der confirmation.
•
Compliance with the inspection and maintenance inter-
vals.
•
Observe these operation instructions.
WARNING!
Unintended use of the gear unit can lead to explosions
that can cause serious injuries or even death.
Only use the gear unit as intended!
2
Safety information
WARNING!
Failure to comply with these operating instructions can
cause ignition sources when using the gear unit in areas
subject to explosion hazard and lead to explosions that
can cause serious injuries or even death.
Comply with the instructions in these operating instruc-
tions!
CAUTION!
Burns!
The surface temperature of the gear unit can significantly ex-
ceed 65° C in operation!
Allow the gear unit to cool down sufficiently before touch-
ing it or wear protective gloves.
Also follow the applicable national, local and system-specific
requirements.
2.1 Ignition hazard and protective mea-
sures
The following is an overview of ignition hazards that can arise
when operating the gear unit and protective measures that
are described in these operating instructions.
Ignition hazard: hot surfaces
Possible causes: increased friction due to improper assem-
bly, wear, overload or leaks.
Protective measures:
•
Compliance with the maximum permitted torques and
speeds
•
Limitation of the motor current
•
Control before commissioning
•
Measurement of the maximum surface temperature
during commissioning
•
Regular inspection and maintenance
Ignition hazard: mechanically generated sparks
Possible causes: improper assembly of leaks
•
Control before commissioning
•
Regular inspection and maintenance
Ignition hazard: electrostatic discharge
Possible causes: friction processes, potential differences be-
tween components
•
Exclusive use of components with ATEX approval
•
Earth the gear unit housing
•
Load-separating processes on the gear unit housing are
avoided (no friction on the clothing of the operating
personnel; cleaning of the plastic covers with a damp
cloth)
2.2 Personnel requirements
All work on the electrical equipment of the drive units must be
performed by qualified electricians. Installation, maintenance
and repairs of mechanical parts must be performed by fitters,
industrial mechanics or persons with comparable qualifica-
tions.
