User Manual
ATEX instruction for
OMS, OMT and OMV Special conditions
for safe use
powersolutions.danfoss.com
Revision history Table of revisions
Date Changed Rev
September 2016 Minor updates 0103
March 2016 Minor updates 0102
April 2015 First edition AA
User Manual
ATEX instruction for OMS, OMT and OMV
2 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
Introduction OMS, OMT and OMV
General information........................................................................................................................................................................ 4
Intended use...................................................................................................................................................................................... 4
Name plate data for ATEX-specified OMS, OMT and OMV motors...........................................................................5
Production place and date of the motor - OMT sample:.............................................................................................. 5
T codes and maximum surface temperature for OMS, OMT and OMV motors....................................................6
Technical information
Product description.........................................................................................................................................................................9
Operating principle for OMS, OMT and OMV motors....................................................................................................9
Technical specification for OMS, OMT and OMV motors................................................................................................... 9
Oil types / Operating fluids...........................................................................................................................................................9
Mineral oils for OMS, OMT and OMV motors..................................................................................................................10
Temperature and viscosity......................................................................................................................................................... 10
Ambient temperature.............................................................................................................................................................10
Oil temperature.........................................................................................................................................................................10
Viscosity........................................................................................................................................................................................10
Filtering..............................................................................................................................................................................................11
Painting of the motor................................................................................................................................................................... 11
Installation, operation and maintenance
Installation........................................................................................................................................................................................12
Installation of OMS, OMT and OMV motor to the system..........................................................................................12
Hydraulic connections for OMS, OMT and OMV motors............................................................................................13
Operation..........................................................................................................................................................................................14
Pre start up controls for OMS, OMT and OMV motors................................................................................................ 14
Start up.........................................................................................................................................................................................14
Maintenance....................................................................................................................................................................................15
Service and repair of OMS, OMT and OMV motors.......................................................................................................15
Safety precautions.............................................................................................................................................................. 16
Declaration
EU declaration of Conformity for OMS, OMT and OMV orbital motor........................................................................17
User Manual
ATEX instruction for OMS, OMT and OMV
Contents
©
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This documentation applies to the following products:
•
Hydraulic Orbital Motor type OMS, OMSW and OMSS
•
Hydraulic Orbital Motor type OMT, OMTW and OMTS
•
Hydraulic Orbital Motor type OMV, OMVW and OMVS
General information
Purpose of this document
This User Manual has been prepared by the manufactor 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 motors 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 Danfoss OMS, OMT and OMV motors have the following 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.
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
4 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
Name plate data for ATEX-specified OMS, OMT and OMV motors
The Danfoss OMS, OMT and OMV motors are marked for application in Group II Category 2 systems.
II 2 GD ck TX
* T-codes are listed in: T codes and maximum surface temperature for OMS, OMT and OMV motors on page
6
Explanation of the different groups:
•
Group II category 2 means it is possible to operate in following ATEX zones: zone 1 and zone 2; zone
21 and zone 22.
•
G = may operate in a gaseous environment (zone 1 and 2).
•
D = may operate in a dusty environment (zone 21 and 22).
•
c = Ignition protection by “constructional safety”
•
k = Ignition protection by “liquid immersion”
•
TX = Maximum surface temperature mainly depends on operating conditions (like e.g. ambient and
oil temperature).
Production place and date of the motor - OMT sample:
The production location and date of the motor is shown at the first 5 digits of the serial no.
Example: Serial no: N45123094
Five first digits are N4512
N is the manufacturing location (N=Nordborg ; W = Wroclaw)
4 is the year (It stands for the last digit in the possible decade).
51 is the week
2 is the day (2 = Tuesday)
The last four digits are a consecutive number.
Examples of ATEX motor lables – Motor producered in Nordborg Denmark 2014 week 51 Tuesday
P301 781
11159863
OMT 250
II 2 GD ck TX
N45123094
MADE IN DENMARK
1
2
3
4
5
1. Manufacturer
2. Motor type and displacement
3. ATEX code
4. Code number
5. Production code
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
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T codes and maximum surface temperature for OMS, OMT and OMV motors
T codes for OMS motors – Gaseous environment (G)
OMS/OMSW motors - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T4 T4
≤ 60 °C [140 °F] T4 T4 T4
≤ 80 °C [176 °F] T4 T4 T3
OMSS motors (short motor) - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T5 T4
≤ 60 °C [140 °F] T4 T4 T4
≤ 80 °C [176 °F] T4 T4 T3
T codes for OMT motors – Gaseous environment (G)
OMT/OMTW motors - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T5 T4
≤ 60 °C [140 °F] T5 T4 T4
≤ 80 °C [176 °F] T4 T4 T4
OMTS motors (short motor) - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T5 T5
≤ 60 °C [140 °F] T5 T4 T4
≤ 80 °C [176 °F] T4 T4 T4
T codes for OMV motors – Gaseous environment (G)
OMV/OMVW motors - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T5 T4
≤ 60 °C [140 °F] T4 T4 T4
≤ 80 °C [176 °F] T4 T4 T4
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
6 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
OMVS motors (short motor) - Maximum fluid and ambient temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] T5 T5 T5
≤ 60 °C [140 °F] T5 T4 T4
≤ 80 °C [176 °F] T4 T4 T4
Classification of maximum surface temperatures for Group IIG equipment
Temperature class Maximum surface temperature
°C [°F]
T3 200 [392]
T4 135 [275]
T5 100 [212]
For Group IIG 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.
Maximum surface temperature – Dusty environment (D)
OMS/OMSW 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]
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]
OMT/OMTW 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] 110 [230] 130 [266] 150 [302]
≤ 60 °C [140 °F] 120 [248] 140 [284] 160 [320]
≤ 80 °C [176 °F] 135 [275] 155 [311] 175 [347]
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
©
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OMTS 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] 75 [167] 85 [185] 95 [203]
≤ 60 °C [140 °F] 90 [194] 100 [212] 110 [230]
≤ 80 °C [176 °F] 105 [221] 115 [239] 125 [257]
OMV/OMVW 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] 120 [248] 140 [284] 160 [320]
≤ 60 °C [140 °F] 135 [275] 155 [311] 175 [347]
≤ 80 °C [176 °F] 150 [302] 170 [338] 190 [374]
OMVS 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] 75 [167] 85 [185] 95 [203]
≤ 60 °C [140 °F] 90 [194] 100 [212] 110 [230]
≤ 80 °C [176 °F] 105 [221] 115 [239] 125 [257]
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.
W
Warning
The above operating temperatures (ambient and oil) of the motor must be guaranteed by the end user.
W
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 9
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
8 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
Product description
Operating principle for OMS, OMT and OMV motors
Hydraulic orbital motors convert hydraulic energy (pressure, oil flow) into mechanical energy (torque and
speed). Danfoss orbital motors are of fixed displacement high-torque design. For a given oil flow and
given pressure the displacement (size of motor) determines the speed and torque. For a given
displacement (size of motor) the speed is determined by the oil flow rate and the torque is determined by
the pressure differential.
The operating principle of the motor is based on an internal gear design, consisting of a fixed external
gear reaching against an internal gear through which the output torque and speed are transmitted. The
distributor valve in the OMS, OMT, and OMV motors is of the disc valve design which is driven
synchronously by the internal gear through a cardan shaft ensuring that the individual chambers of the
motor are filled and emptied precisely.
151-1053.10
A
B
C
D
E
F
A: Output shaft
B: Cardan shaft
C: Gearwheel set
D: Valve drive
E: Check valve
F: Disc valve
All parts included in the motors are designed to provide long service life, i.e. long service life with high
efficiency and a minimum level of required service.
Technical specification for OMS, OMT and OMV motors
All necessary design information for instance maximum pressure rating, maximum flow, maximum radial
load etc. is provided in the Technical Information catalogues - please see Technical Information for the
OMS, OMT and OMV Orbital motors with literature number 520L0407.
The rated data which we publish in our Technical Information is based on the use of premium mineral
based hydraulic oil with a viscosity of 35 mm2/s.
Danfoss declines any responsibility in case of use of the motor in operating conditions not allowed
according to the information shown in this User Manual and above Technical Information.
Oil types / Operating fluids
In a hydraulic system the most important task of the oil is to transfer energy. At the same time the oil
must lubricate moving parts in hydraulic components, protect them from corrosion, and transport dirt
User Manual
ATEX instruction for OMS, OMT and OMV
Technical information
©
Danfoss | September 2016 11160602 | AQ00000213en-US0103 | 9
particles and heat out of the system. To ensure that hydraulic components operate without problems
and have long operating life it is therefore vital to select the correct oil type with the necessary additives.
Mineral oils for OMS, OMT and OMV motors
For systems containing Danfoss hydraulic motors mineral hydraulic oil with anti-wear additives, type HLP
[DIN 51524] or HM (ISO 11158) must be used.
Mineral oils without anti-wear additives or engine oils can also be used, provided operating conditions
are suitable.
W
Warning
It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the motor. Maximum surface temperature for Group IIG and IID can be found under:T
codes and maximum surface temperature for OMS, OMT and OMV motors on page 6.
Mixing oils of different brands or different oils of the same brand may lead to the formation of sediment
and sludge. Consequently a rapid, irreversible deterioration of the system is induced.
Temperature and viscosity
Ambient temperature
Maximum ambient temperature depends on the requested ATEX class needed – please see T codes and
maximum surface temperature for OMS, OMT and OMV motors on page 6.
In general the ambient temperature should be between -30 °C [-22 °F] and +90 °C [+210 °F] to ensure that
the shaft seal retains its sealing capacity.
Oil temperature
Maximum oil temperature depends on the requested ATEX class needed – please see T codes / Maximum
surface temperature.
Under normal operating conditions it is recommended to keep the temperature in the range of 30 °C [86
°F] to 60 °C [140 °F].
Fluid temperature affects the viscosity of the fluid and resulting lubricity and film thickness. High
temperatures can also limit seal life, at most nonmetallic materials are adversely affected by use at
elevated teperatures.
Fluids may break down or oxidize at high temperature, reducing their lubricity and resulting in reduced
life of the unit. Oil life is greatly reduced if its temperature exceeds +60 °C [+140 °F]. As a general rule, oil
life is halved for each 8 °C [46 °F] its temperature exceeds +60 °C [+140 °F].
Viscosity
Maintain fluid viscosity within the recommended range for maximum efficiency and bearing life.
Minimum viscosity should only occur during brief occasions of maximum ambient temperature and
severe duty cycle operation. Maximum viscosity should only occur at cold start. Limit speeds until the
system warms up.
User Manual
ATEX instruction for OMS, OMT and OMV
Technical information
10 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
Fluid viscosity limits
Conditions mm2/s (cSt) SUS
Minimum 12 66
Continuous 20 - 80 98 - 370
Maximum 1500 6950
We recommend the use of an oil type having a viscosity of 35 mm2/s at the actual operating temperature.
Filtering
It is necessary to keep the level of oil contamination at an acceptable level to ensure problem-free
operation. The recommended maximum level of contamination in systems with Danfoss hydraulic orbital
motors is 22/20/16 (ISO 4406-1999).
Painting of the motor
W
Warning
Danfoss ATEX certified motors are without painting. In case of additional painting of the motor please
make sure that the thickness is in accordance with the relevant standards.
User Manual
ATEX instruction for OMS, OMT and OMV
Technical information
©
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This section is intended for personnel assigned to install the motor on the machine or system for which
the unit has been purchased. Therefore the importance of this section is emphasized since the optimum
operation of group machine/system – motor is the consequence of correct assembly of the parts; the
correct installation will limit the sources of danger for people working near to the structure.
Installation
Installation of OMS, OMT and OMV motor to the system
When assembling the motor in the machine/system it is the builder’s responsibility that the parts used
conform to the ATEX directive and that the components are assembled and running according to the
operational data/design found in product data sheets and instructions.
Only use the motor as required by the explosion protection shown on the name plate.
Always ensure that the following is maintained:
•
The supporting frame, chassis, or structure of equipment containing the motor shall be constructed
of electrically conducting material and shall be so arranged as to provide a leakage path to earth
(ground) for any static electricity which occurs on the motor.
•
It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the motor. Maximum surface temperature for Group IIG and IID can be found under T
codes and maximum surface temperature for OMS, OMT and OMV motors on page 6.
•
Make sure that all type of accessory installed on the motor are ATEX certified and have been installed
in accordance with ATEX requirements.
•
There are no creeping metal elements external to the motor.
•
There are no plastic parts that might accumulate electrostatic; or they are shielded.
•
Do not connect any object with an electrical resistance greater than 109 Ω to the motor.
•
The maximum permissible oil and ambient temperature is monitored and not exceeded for the
category and temperature class of the associated zone.
•
For installation in zones 21 and 22 the user has to adopt a scheduled periodic clearing plan of the
motor surface and recesses to prevent more than 5 mm thickness of dust deposits.
Regarding the assembly flange on the machine/system where the motor has to be installed: the relevant
surface has to be perfectly smooth, completely de-greased and non-deforming.
It is necessary to verify the perfect aligment between the motor output shaft and the counter part – the
fitment between motor shaft and application’s driven shaft must be executed so that no radial or axial
pre-load is generated – these extra loads reduce the bearings expected lifetime.
151-2062.10
User Manual
ATEX instruction for OMS, OMT and OMV
Installation, operation and maintenance
12 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
151-2063.10
Hydraulic connections for OMS, OMT and OMV motors
Main inlet hoses connections (Y)
The motor has two port connections on the end cover which can be both inlet or outlet ports depending
on the application.
Drain line connection (Z)
The drain line relieves the pressure on the shaft seal to tank. The tank pressure must be less than or equal
to the maximum permissible seal pressure – see seal graph shown in the Technical Information catalogue
for OMS, OMT and OMV motors.
151-1091.10
Y
Z
The following main rules apply to drain lines fitted to Danfoss hydraulic motors:
•
We recommend a drain line when the maximum pressure on the shaft seal is exceeded, i.e. the life of
the shaft seal can otherwise be significantly reduced.
•
We always recommend a drain line when
‒
A short motor (bearing less motor) is built together with e.g. a gear.
‒
The motor is used in hydrostatic transmissions that do not have a separate flushing valve.
Tightening torque
The recommended tightening torque for the hoses are shown in the table below.
Maximum tightening torque
Screwed connection G 1/4 G 1/2 G 3/4 G 1
- with steel washer 40 N•m [350 lbf•in] 130 N•m [1,150 lbf•in] 210 N•m [1,850 lbf•in] 280 N•m [2,500 lbf•in]
- with cutting edge 40 N•m [350 lbf•in] 130 N•m [1,150 lbf•in] 210 N•m [1,850 lbf•in] 280 N•m [2,500 lbf•in]
User Manual
ATEX instruction for OMS, OMT and OMV
Installation, operation and maintenance
©
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Operation
The purpose of this section is to indicate the necessary procedures to perform the motor start up.
Pre start up controls for OMS, OMT and OMV motors
Before performing the first motor start up, the following points have to be checked:
•
Hydraulic components must be installed in accordance with their individual instruction.
•
To avoid contamination, plastic plugs in connection ports must not be removed until just before
connections are made.
•
Make sure the motor hydraulic connections allow the motor to rotate in the desired direction. For
motors with standard direction of rotation:
‒
Clockwise rotation (viewed facing the output shaft) with inlet pressure in the A port.
‒
Counter-clockwise rotation (viewed facing the output shaft) with inlet pressure in the B port.
B BA A
151-1050.10
•
Select the hydraulic fluid as specified in the “Oil types / Operating fluids on page 9 section.
•
There must be full contact between motor mounting flange and connecting part.
•
Avoid pressing the motor into place by tightening the fixing bolts.
•
Avoid unsuitable seal materials, for example, twine and Teflon, on threaded unions. Use only the seals
supplied, such as O-rings, steel washers.
•
Make sure that all couplings are completely tightened to prevent leakage – never use more torque
than max values given in instructions.
•
Check to make sure the purity of the oil is better than 22/20/16 (ISO 4406-1999) and always use a filter
when replenishing the system.
W
Warning
The motor must be filled with fluid prior to any load applications.
Start up
During and immediately after the motor start up, any hydraulic system must be closely and frequently
checked.
Recommendation - To assure best motor performance, run the motor for approximately one hour at 30%
of rated pressure and speed before running at full load. When running make sure the motor and oil
temperature and noise level are sufficiently low. High temperature or noise level might be symptoms of
unforeseen operation conditions that have to be analyzed and cleared.
Check for system leakage and make sure the system is operating satisfactorily.
To ensure that the contamination in the hydraulic system does not damage the orbital motor, Danfoss
recommends the following procedure after a brief period in operation.
User Manual
ATEX instruction for OMS, OMT and OMV
Installation, operation and maintenance
14 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
•
After a brief period in operation, have a hydraulic fluid specimen analyzed for the required cleanliness
level.
•
If the required cleanliness level is not reached clean or replace oil filter or change the hydraulic fluid.
During operation
The product is a component which requires no settings or changes during operation. The machine/
system manufacturer is responsible for the proper project planning of the hydraulic system and its
control.
Danfoss recommends:
•
Regularly verify that the temperature of the ambient and the operating oil are those initially
determined.
•
Do not subject the motor to pressure, pressure drop or speeds exceeding the maximum values stated
in the appropriated catalogues.
•
Filter the oil to maintain the grade of contamination at 22/20/16 (ISO 4406-1999) or better.
Maintenance
W
Warning
If maintenance has to be performed in an explosive and hazardous atmosphere, an anti-sparking safety
tool must be used.
•
With hydraulic systems the main criterion for reliability and operating life is very thorough regularly
maintenance.
•
Regularly check the system for presence of leakage and the oil level.
•
During system’s function, it is necessary regularly to verify that the temperature of the ambient and
the operating oil are those initially determined.
•
Replenish and change the oil, the oil and air filters as stated in the respective instructions.
•
Regularly check the condition of the oil – viscosity, oxidation, filtration level etc.
‒
Viscosity - verify that the viscosity level is within the recommended values as indicated in the
Temperature and viscosity on page 10 section.
‒
Oxidation - mineral oil gets oxidized proportional to the usage degree and operating
temperature. The oxidation of oil is evident because of its change of color, bad smell, acidity
increase and because of the generation of sludge inside the tank. In case symptoms of this kind
are detected, the system oil must be immediately changed.
‒
Water presence – the presence of water inside oil can be determined by taking oil samples from
the bed of the oil tank: oil floats on water, if present, water tends to stay on the tank’s bed. If its
presence is determined, water must be regularly purged. Presence of water in the hydraulic
system can severely damage the motor.
‒
Degree of contamination – a high degree of contamination of the operating oil causes a severe
wear of all hydraulic components: for this reason, the cause of the contamination must be
identified and eliminated. In order to avoid mixing of different oils, when replacing the operating
fluid. It is necessary to empty all the machinery and pipes, clean them carefully and clean the tank.
•
For installation in zones 21 and 22 the user has to adopt a scheduled periodic clearing plan of the
motor surfaces and recesses to prevent more than 5mm thickness of dust deposits.
Service and repair of OMS, OMT and OMV motors
In case a service or repair intervention on the motor is required, it has to be performed according to the
information shown in below mentioned Repair Instructions.
The Repair Instruction includes the spare part list and information about how dismantling and
assembling of the motor is done properly.
•
Orbital Motor OMS/OMSW Repair Instruction: Literature number L1012850
User Manual
ATEX instruction for OMS, OMT and OMV
Installation, operation and maintenance
©
Danfoss | September 2016 11160602 | AQ00000213en-US0103 | 15
•
Orbital Motors OMT Series 2 Repair Instruction: Literature number 520L0595
•
Orbital Motor OMV Repair Instruction: Literature number 520L0594
Safety precautions
Always consider safety precautions before beginning a service procedure. Protect yourself and others
from injury. Take the following general precautions whenever servicing a hydraulic system.
Tools
W
Warning
It is compulsory to use anti sparking safety tools in case the service/repair activity has to be performed in
explosive hazardous atmosphere.
Unintended machine movement
W
Warning
Unintended movement of the machine or mechanism may cause injury to the technician or bystanders.
To protect against unintended movement, secure the machine or disable/disconnect the mechanism
while servicing. Follow the manufacturers instructions for securing the machine.
Personal safety
W
Warning
Protect yourself from injury. Use proper safety equipment, including safety glasses, at all times.
Flammable cleaning solvents
W
Warning
Some cleaning solvents are flammable. To avoid possible fire, do not use cleaning solvents in an area
where a source of ignition may be present.
Fluid under pressure
W
Warning
Escaping hydraulic fluid under pressure can have sufficient force to penetrate your skin causing serious
injury and/or infection. This fluid may also be hot enough to cause burns. Use caution when dealing with
hydraulic fluid under pressure. Relieve pressure in the system before removing hoses, fittings, gauges, or
components. Never use your hand or any other body part to check for leaks in a pressurized line. Seek
medical attention immediately if you are cut by hydraulic fluid.
User Manual
ATEX instruction for OMS, OMT and OMV
Installation, operation and maintenance
16 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
EU declaration of Conformity for OMS, OMT and OMV orbital motor
User Manual
ATEX instruction for OMS, OMT and OMV
Declaration
©
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User Manual
ATEX instruction for OMS, OMT and OMV
©
Danfoss | September 2016 11160602 | AQ00000213en-US0103 | 19
User Manual
ATEX instruction for OMS, OMT and OMV
20 | © Danfoss | September 2016 11160602 | AQ00000213en-US0103
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electronic components. We specialize in providing state-of-the-art technology and solutions
that excel in the harsh operating conditions of the mobile off-highway market. Building on
our extensive applications expertise, we work closely with our customers to ensure
exceptional performance for a broad range of off-highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring
vehicles to market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.powersolutions.danfoss.com for further product information.
Wherever off-highway vehicles are at work, so is Danfoss. We offer expert worldwide support
for our customers, ensuring the best possible solutions for outstanding performance. And
with an extensive network of Global Service Partners, we also provide comprehensive global
service for all of our components.
Please contact the Danfoss Power Solution representative nearest you.
Local address:
Danfoss
Power Solutions GmbH & Co. OHG
Krokamp 35
D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Danfoss
Power Solutions ApS
Nordborgvej 81
DK-6430 Nordborg, Denmark
Phone: +45 7488 2222
Danfoss
Power Solutions (US) Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000
Danfoss
Power Solutions Trading
(Shanghai) Co., Ltd.
Building #22, No. 1000 Jin Hai Rd
Jin Qiao, Pudong New District
Shanghai, China 201206
Phone: +86 21 3418 5200
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
©
Danfoss | September 2016 11160602 | AQ00000213en-US0103
Products we offer:
•
Bent Axis Motors
•
Closed Circuit Axial Piston
Pumps and Motors
•
Displays
•
Electrohydraulic Power
Steering
•
Electrohydraulics
•
Hydraulic Power Steering
•
Integrated Systems
•
Joysticks and Control
Handles
•
Microcontrollers and
Software
•
Open Circuit Axial Piston
Pumps
•
Orbital Motors
•
PLUS+1® GUIDE
•
Proportional Valves
•
Sensors
•
Steering
•
Transit Mixer Drives
Comatrol
www.comatrol.com
Schwarzmüller-Inverter
www.schwarzmuellerinverter.com
Turolla
www.turollaocg.com
Hydro-Gear
www.hydro-gear.com
Daikin-Sauer-Danfoss
www.daikin-sauer-danfoss.com
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