White OMS Manuel utilisateur
User Manual
ATEX instruction for OMS
Contents
Chapter 1: Introduction........................................................................................... 5
General information.............................................................................................................................................. 6
Intended use...........................................................................................................................................................6
Marking of ATEX motors......................................................................................................................... 6
Maximum surface temperature for OMS.................................................................................................. 8
Chapter 2: Technical information......................................................................... 11
Product description..............................................................................................................................................12
Operating principle for OMS motors...................................................................................................... 12
Technical specification for OMS motors............................................................................................................ 12
Oil types / Operating fluids................................................................................................................................. 12
Mineral oils for OMS motors.................................................................................................................. 12
Temperature and viscosity...................................................................................................................................12
Ambient temperature...............................................................................................................................13
Oil temperature........................................................................................................................................13
Viscosity..................................................................................................................................................13
Filtering............................................................................................................................................................... 13
Painting of the motor...........................................................................................................................................13
Chapter 3: Installation, operation and maintenance........................................... 15
Installation...........................................................................................................................................................16
Installation of OMS motor to the system................................................................................................ 16
Hydraulic connections for OMS motors................................................................................................. 17
Operation.............................................................................................................................................................17
Pre start up controls for OMS motors..................................................................................................... 17
Start up.................................................................................................................................................... 18
Maintenance........................................................................................................................................................ 19
Service and repair of OMS motors..........................................................................................................19
Chapter 4: Declaration........................................................................................... 21
ATEX Certified Orbital Motors | Contents | iii
General information
Purpose of this document
This User Manual has been prepared by the manufacturer in order to provide important information regarding the safe
installation, operation and maintenance of ATEX certified motors.
This User Manual is a supplement to existing product instruction as ATEX components are subjected to some
limitations compared to standard components. The limitations are described in this ATEX instruction.
It is intended for machine/system manufacturers, fitters and service technicians. Please read this User Manual
carefully before you work with and start-up the motor.
This User Manual must lie close to the motor.
Manufacturer responsibility
The manufacturer declines any responsibility in case of:
• Use of the product not according to safety regulations and legislation valid in the user’s country.
• Use of the product in operating conditions not allowed according to the product technical documentation.
• Improper installation: the instructions given in this User Manual are not followed or not properly followed.
• Hydraulic system problems.
• Modification of the product.
• Operations executed by personnel not properly trained or not assigned to such a kind of operations.
Product safety
The safety of the product depends upon the strict observation of the indications given in this User Manual: in
particular, it is necessary to:
• Always operate within allowed product working operating conditions (please refer to the Technical Information of
the motor in usage).
• Always perform an accurate ordinary maintenance activity.
• Assign the inspection activity as well as maintenance activity to duly trained personnel.
• Only use original spares.
• Always use the product according to the indications you find in this manual.
Intended use
Hydraulic motor converts hydraulic energy (pressure, oil flow) into mechanical energy (torque and speed). They are
designed for mobile and stationary applications.
The motors fulfill the explosion requirements with the Directive 2014/34/EU for the category shown on the name
plate.
The OMS motors have an identifying name plate. The name plate provides essential information and specification for
correct and safe use.
This identifying plate has to be maintained so that the data can be clearly read; consequently, a periodic cleaning of
the plate is required.
Marking of ATEX motors
The OMS motor is marked for application in gaseous and dusty environments according to the below:
ATEX Certified Orbital Motors | Introduction | 6
Figure 1: Example label only
Key to label image:
1. CE Conformity marking
2. EU marking (per 2014/34/EU) - Directive part
Description EU Marking
CE conformity marking CE
Explosion protection marking
Equipment group II
Equipment Category 2G / 2D
3. EU marking (per EN ISO 80078-36.2016 Standard part)
Description EU Marking
Protection principle h
Explosion protection marking Ex
Equipment group II / III
Equipment protection level (EPL) Gb / Db
OMS Gas T5...T3
Dust T75°C...T125°C
OMSS Gas T5...T3
Dust T85°C...T125°C
ATEX Certified Orbital Motors | Introduction | 7
Table 1: EPL/Equipment category
Definition Level of
protection
Typical
zone of
application
EN ISO EU
EPL Group Category Group
Gas
atmosphere
Very high 0 Ga II 1G II
High 1 Gb 2G
Enhanced 2 Gc 3G
Dust
atmosphere
Very high 20 Da III 1D II
High 21 Db 2D
Enhanced 22 Dc 3D
4. See item 3
5. Min and max ambient temperature
6. Manufacturer
7. Motor type and displacement
8. Code number
9. Production number, date, and series number
Example of item 9: N95123094
NManufacturing location (N = Nordborg)
9Year 2019
51 Week 51
2Tuesday (1 = Monday)
3094 Consecutive number
Maximum surface temperature for OMS
Classification of maximum surface temperatures for Group II equipment
Temperature class Maximum surface temperature
°C [°F]
T3 200 [392]
T4 135 [275]
T5 100 [212]
Note:
For Group II with T4 classification it is acceptable that small surface areas (total areas ≥ 20 mm2 and ≤ 1000 mm2)
can have surface temperature up to 200 °C.
For T5 classification it is acceptable that small surface areas (total areas ≤ 1000 mm2) can have surface temperature
up to 150 °C.
ATEX Certified Orbital Motors | Introduction | 8
Maximum surface temperature – Dusty environment (Group III)
Table 2: OMS motors - Maximum surface temperatures
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] 115 [239] 135 [275] 155 [311]
≤ 60 °C [140 °F] 130 [266] 150 [302] 170 [338]
≤ 80 °C [176 °F] 145 [293] 165 [329] 185 [365]
Table 3: OMSS motors (short motor) - Maximum surface temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] 85 [185] 95 [203] 105 [221]
≤ 60 °C [140 °F] 100 [212] 110 [230] 120 [248]
≤ 80 °C [176 °F] 115 [239] 125 [257] 135 [275]
Note: Above maximum surface temperatures are without any deposited dust on the motors. The possible insulation
effect of a dust layer on the surface has to be taken into account by the safety margin to the minimum ignition
temperature of the dust concerned. For up to 5 mm [1.97 in] layer thickness the safety margin is 75 °C [167 °F]. For
further information please see IEC 60079-14.
Warning: The above operating temperatures (ambient and oil) of the motor must be guaranteed by the end
user.
Warning: It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the motor. See also Oil types / Operating fluids on page 12
ATEX Certified Orbital Motors | Introduction | 9
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