Stober KL Operating Manual

Operating manual
Explosion-protected right angle servo gear units KL/KS/PHK/PHKX/PHQK/PK/PKX
These operating instructions contain information about the
transport, assembly, commissioning and service of gear units
from STOBER. Observe the applicable documents of
attached motors and additional drive components.
1 Operation in accordance with its
intended use
Explosion-protected gear units from STOBER meet the
requirements 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
machines 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.
• 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
order confirmation.
• Compliance with the inspection and maintenance
intervals.
• 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!
01/2019
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
instructions!
Also follow the applicable national, local and system-specific
requirements.
CAUTION!
Burns!
The surface temperature of the gear unit can significantly
exceed 65° C in operation!

Allow the gear unit to cool down sufficiently before
touching it or wear protective gloves.
2.1 Ignition hazard and protective
measures
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
assembly, 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
between components
• Exclusive use of components with ATEX approval
• Earth the gear unit housing
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
qualifications.
1
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