Unibor Airbor 2 User manual

Operating instructiOns
To help you get the best possible
performance from your new Airbor 2
Magnetic Drilling Machine, this guide
contains simple, sensible pointers for the
safe, effective and long term use of the
equipment.
• Please read it carefully, together
with the motor manual and the Guide
to Good Drilling, BEFORE using the
machine, taking especial notice of the
sections relating to the Air Motor.
• ENSURE that you have observed all
the general, local and specific safety
procedures, PARTICULARLY those
relating to the environment in which you
will be using the machine.
43, Catley Road,
Darnall,
Sheffield S9 5JF.
England.
Tel: [phone]
Fax: [phone]
www.unibor.com e-mail: [email protected]
A Nitto Kohki Company
2010
editiOn

The Airbor 2 requires clean, dry lubricated air at a
maximum pressure of 6.2 bar (620kPa/90 psi) .
The air supply should always be turned off and
disconnected before installing or removing any accessory
on this machine.
Connect the chosen coolant delivery system to the arbor.
To commence drilling, place the machine in the correct
drilling postion. To activate the magnet, extend the
telescopic magnet handle for more leverage, and pull it to
the left.
Re-check the unit is correctly positioned for the hole to be
cut, and close the magnet handle extension.
To start the motor, disengage the motor lever locking pin by
pulling the handle on motor actuating lever, then move the
handle to the left. The motor will start.
While the motor is running, the magnet cannot be
disengaged.
When the cut is complete, stop the motor by moving the
lever to the right
Operating instructiOns

WARNING
• Non-compliance with any of these Special
Conditions could result in ignition of explosive
atmospheres.
• Rubbing and friction can cause sparks or
elevated temperatures that may be a source of
ignition of an explosive atmosphere.
Application & Installation
Bearing overload will cause premature bearing
malfunctions that may result in rubbing and
friction.
Comply with the following to prevent bearing
overload.
1 . Do not exceed factory recommendation for
maximum allowable shaft radial load versus
speed.
2. Refer to catalog data and/or an IR Technical
Specialist for specific technical information &
recommendations.
3. Driven loads should be balanced to eliminate
abnormal loading of the air motor bearings due
to radial vibration.
Ensure that motor shaft and driven rotating or
oscillating components do not come in contact
with other components.
1. Enclose or guard moving parts.
2. Mount air motor securely. A loose motor will
cause abnormal operation or may drop from
mounting.
3. Guard air motor from impact that may result in
a spark.
Motor Operation Conditions
Elevated surface temperature, an indication of
overload or potential failure of bearings or other
mechanical components, may create an ignition
source.
1 . The maximum expected surface temperature
(Tmax) of the entire machine, into which the
motor is incorporated, should be measured
and stated for the ATEX Directive Marking
Requirement and Certificate of Conformance.
2. Maximum bearing temperatures should not
exceed WC for an extended length of time.
3. Monitor air motor bearings and housing
temperatures during motor operation for
unusually high operating temperatures.
ROTARY AIR MOTORS
Special Conditions for incorporating into a machine for use in
Potentially Explosive Atmospheres
The EC Declaration of Incorporation in this manual states that these Air Motor model have been
reviewed as components for compliance with European Community Directive 94/9/EC for
equipment intended for use in potentially explosive atmospheres, commonly referred to as the
ATEX Directive.
These Air Motors were reviewed for conformance to ATEX designation:
ll 2 GD c llB 950 C X
These ATEX designations define the applications, the type and duration of the potentially explosive
atmospheres, the type of protection and the maximum surface temperature.
The ‘X’ indicates that additional special conditions are required for safe application, installation, operation
and/or maintenance when used in potentially explosive atmospheres.
The explosive hazard assessment of the complete machine into which this air motor will be incorporated will
determine the final ATEX marking and conditions. Because this air motor’s final machine incorporation is not
known, it has not been marked with the ATEX Directive symbols.
NOTICE
• All Special Conditions must be followed for this component to conform to
the ATEX Directive and for the ATEX Declaration of Incorporation to be valid.
Special Conditions for
Safe Application, Installation, Operation and Maintenance

NOTICE
The air motor’s maximum surface
temperature measured 71oC with an
ambient temperature of 21oC. These
measurements were taken with the air
motor running at free speed and with
air pressure at the inlet at 6.2 bar
(620 kPa/90 psig).
Elevated vibration levels of the air motor, an
indication of imbalance or potential failure of
bearings or
other mechanical components, may create an
ignition source.
1. Measure and state normal acceptable vibration
levels during operation for the completed
machine.
2. Monitor air motor shaft and housing vibration
for abnormal conditions.
Operation
Always use clean, dry, lubricated air at 6.2 bar
(620 kPa/90 psig) maximum air pressure at the
inlet. Higher pressure may result in hazardous
situations including excessive speed, or incorrect
output torque or force resulting in premature
failure of bearings or other components.
1. Refer to manufacturer’s specification supplied
with the air motor for proper airline lubrication.
Maintenance
Follow all lubrication and maintenance
recommendations as found in the manual supplied
with the air motor.
1. Do not perform maintenance or repairs in an area
where hazardous atmospheres are present.
2. Do not clean or lubricate air motor with
flammable or volatile liquids, such as kerosene,
diesel or jet fuel, which create a potentially
explosive atmosphere.
“Special Conditions” (Continued)
NOTICE
• Place the recommendations given
in these special conditions, and any
similar recommendations identified by
the explosive hazard assessment of the
complete machine, in the accompanying
literature of the machine into which the
air motor is incorporated.
• To safely use this product and conform
with the provisions of the Machinery
Directive all instructions given in the
accompanying literature, in addition
to all conditions, notices and warnings
given herein, must be followed.
• The EC Declaration of Incorporation
in this manual states that the air motor
used in this machine has been reviewed
for compliance to European Community
Directive 94/9/EC for equipment for use
in potentially explosive atmospheres.
Air motors are intended to be integrated
or incorporated into a larger machine.
The motor manufacturer cannot foresee
all of the ways that this component
may be applied and, therefore, cannot
provide all of the safety aspects of the
larger, completed machine.
It remains, therefore, the responsibility
of the user to ensure that all of the
safety requirements for application,
installation, operation, inspection and
maintenance of the machine are met, in
accordance with all applicable standards
and regulations (local, state, country,
federal, etc.).

Explanation of ATEX and Declaration of Incorporation
1 . Assess their products to prevent creation of an
explosive atmosphere or a source of ignition of an
explosive atmosphere.
2. Certify that when the products are properly
installed, maintained and used for their intended
purpose, they do not endanger the health and
safety of persons, animals or property.
The ATEX Directive recognizes that the probability
of a serious event occurring varies with:
- the explosive properties of the atmosphere
- the probability of the atmosphere being present
- the probability of the machinery causing an
explosive atmosphere
- the probability of the machinery causing an
ignition source
The ATEX Directive recognizes the need for
special conditions of installation, operation and
maintenance that must be followed to reduce or
eliminate this potential for a serious event.
The ATEX Directive requires a completed machine
be marked to indicate that the completed machine
has been certified for use in potentially explosive
atmospheres and to inform users of limits and
special conditions of use.
ATEX Directive Markings
ll 2 GD c llB Tmax X
serves as an example of an ATEX Directive marking
on a complete machine, where the following
symbol indicates:
1. Ex Mark:
signifies certification for use in an
explosive atmosphere, followed by
other symbols indicating the details of
that certified use.
2. Equipment Group:
- ll - Equipment Group 11 - Non-Mine use.
3. Equipment Category:
- 2 - Group 11 Equipment Category 2 -
Equipment in Category 2 is intended for
use in places classified as zone 1 or 21
(defined in standard EN 1127-1) in which
explosive atmospheres are only likely
to occur. Protection is ensured during
normal use and in the event of frequently
occurring disturbances or normal
equipment faults. Category 2 equipment
can also be used where Category 3
equipment is required.
4. Type of Explosive Atmosphere:
- G - Evaluation for explosive atmospheres
caused by gases, vapors or mists.
- D - Evaluation for explosive atmospheres
caused by dust.
5. Protection Method (Optional marking):
- C - Type of explosion protection per standard
EN 13463-5 in which constructional
measures are applied so as to provide
safety against the possibility of ignition.
6. Gas Group (Optional marking):
Gases are grouped by their MESG (Maximum
Experimental Safe Gap) and MIC (Maximum
Ignition Current), with Group A being least
explosive and Group C being most explosive.
Gas Groups are defined in standard EN 50014.
- llB - Certification for use in Group B which
covers gases with an MIC ratio of 0.45
to 0.8 and MESG value of 0.55 to 0.9
mm. If certified for Group B it would be
safe in Group A, which covers gases
with MIC ratio above 0.8 and MESG
above 0.9 mm.
7. Maximum Expected Surface Temperature
-Tmax-The maximum surface temperature in
degrees Centigrade calculated from the
measured maximum temperature with
corrections for ambient and a factor of
safety.
8. Special conditions required for
safe application, installation, operation and
maintenance (Optional marking).
- X - Indicates that there are special
conditions that MUST be followed for
the certification to apply.