SEW-Eurodrive X Series User manual

*22760652_1216*
Drive Technology \ Drive Automation \ System Integration \ Services
Addendum to the Assembly and
Operating Instructions
Industrial Gear Units
X.. Series Helical and Bevel-Helical Gear Units
Oil-Air Cooler for Splash or Bath Lubrication /OAC
Edition 12/2016 22760652/EN

SEW-EURODRIVE—Driving the world

Table of contents
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 3
Table of contents
1 Important information .............................................................................................................. 4
2 Oil-air cooler for splash or bath lubrication /OAC................................................................. 5
2.1 Structure/function............................................................................................................5
2.2 Wiring diagram (schematic illustration) ...........................................................................8
2.3 Installation/assembly.....................................................................................................10
2.4 Notes on checking the oil level .....................................................................................12
2.5 Startup ..........................................................................................................................13
2.6 Inspection/maintenance ................................................................................................14
2.7 Malfunctions..................................................................................................................15
2.8 Permitted lubricants ......................................................................................................16
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1Important information
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
4
1 Important information
INFORMATION
This addendum describes amendments to the oil-air cooler operating instructions.
Observe the additional information specified in this document.
This document does not replace the detailed operating instructions.
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2
Oil-air cooler for splash or bath lubrication /OAC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 5
2 Oil-air cooler for splash or bath lubrication /OAC
2.1 Structure/function
2.1.1 Structure
An oil-air cooler can be used if the thermal rating of a naturally cooled gear unit, or the
cooling via a fan on the input shaft is not sufficient.
INFORMATION
• The following information applies to gear units with splash lubrication or bath lub-
rication.
• Also refer to the operating instructions of the cooling system manufacturer.
SEW‑EURODRIVE uses 2 types of oil-air coolers:
• Oil-air cooler with a combined pump and fan motor
• Oil-air cooler with separate motors for pump and fan
2.1.2 General information
The cooling system is delivered as a complete unit on a mounting frame for separate
installation but without electrical wiring and piping. As an option, the cooling system
can be mounted to the gear unit as a complete unit. In this case, the cooling system is
delivered with piping but without wiring.
Depending on the design, the standard delivery of the cooling system includes:
Design with common pump and fan motor
The standard delivery of the cooling system includes:
• Pump and fan with directly mounted asynchronous motor
• Oil-air heat exchanger
• Temperature switch /TSK2 with 2 switching points for
– Controlled start of the pump motor and fan motor at an oil temperature > 60°C
– Monitoring of the oil-air cooler, i.e. warning or gear unit shutdown at an oil tem-
perature > 90°C
Design with separate motors for fan and pump
The standard delivery of the cooling system includes:
• Pump with directly mounted asynchronous motor
• Fan with directly mounted asynchronous motor
• Oil-air heat exchanger
• Temperature switch /TSK2 with 2 switching points for
– Controlled start of the pump motor and fan motor at an oil temperature > 60°C
– Monitoring of the oil-air cooler, i.e. warning or gear unit shutdown at an oil tem-
perature > 90°C
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2Oil-air cooler for splash or bath lubrication /OAC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
6
Optional accessories
The cooling system can be equipped with the following components as an option:
• Oil filter with electrical/optical maintenance indicator
– Single filter
– Duplex filter
• Flow rate sensor
• Manometer
• Thermometer
• PT100 temperature sensor
2.1.3 Function
Observe the following control information for the individual components.
Pump/fan
The driving motor of pump and fan is switched on and off depending on the tempera-
ture.
When the pump is operated, a pressure control valve integrated in the cooler limits the
plant pressure.
INFORMATION
Do not change the default setting of the valve.
Temperature switch /TSK2
The temperature of the plant is monitored via a temperature switch with defined
switching points.
• At T > 60°C →COOLER ON
• At T < 50°C →COOLER OFF
• At T > 90°C →STOP GEAR UNIT/WARNING
PT100 temperature sensor (optional)
Optionally, a PT100 temperature sensor instead of a temperature switch/TSK2 can be
used to control the cooling system. The evaluation of the temperature signal and the
controlling of the operator's switching devices is performed by the operator's control.
• At T > 60°C →COOLER ON
• At T < 50°C →COOLER OFF
• At T > 90°C →GEAR UNIT STOP / WARNING
Filter (optional)
The filter is monitored visually by a pressure deviation indicator, and electrically by a
pressure deviation monitoring device.
When mp > 2.2 bar →WARNING (clean filter)
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Oil-air cooler for splash or bath lubrication /OAC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 7
2.1.4 Interlocking specifications
Enabling of the gear unit
The gear unit is enabled if the following condition is met:
• Oil temperature T < 90°C
STOP gear unit/warning
STOP gear unit/warning if the following condition is met:
• Oil temperature T > 90°C
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2Oil-air cooler for splash or bath lubrication /OAC
Wiring diagram (schematic illustration)
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
8
2.2 Wiring diagram (schematic illustration)
The wiring diagrams show a possible setup of the control for the cooling system when
a TSK2 temperature switch and, optionally, a PT100 temperature sensor are used.
Use the wiring diagrams according to the structure of the cooling system.
2.2.1 Control circuit with control via temperature switch /TSK2
F2
F1
L1
N
K1 K2K3
S1
S2 K3
Temp. signal to
main motor
control:
Warning/switch off
Main contactor "On"
for main motor
control
S0 Emergency off
T1 T2
closes at
> 60°C
opens at
OIL
> 90°C
OIL
ϑϑ
ϑ
18014415990623371
2.2.2 Control circuit with control via PT100 temperature sensor
K1 ON at
K1 K2
> 60 °C
OIL
> 90 °C
Temp. signal to
main motor
control:
Warning/switch off
OIL
ϑ
K1 OFF at < 50 °C
OIL
ϑϑ
operator‘s
control
At
PT100
F1
L1
N
K3
S1
S2 K3
Main contactor "On"
for main motor
control
Emergency off
S0
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Oil-air cooler for splash or bath lubrication /OAC
Wiring diagram (schematic illustration)
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 9
2.2.3 Main circuit with combined pump and fan motor
F4
Swtich on at
> 60°C
L1
F3
Main motor
control
L2
L3
M
3
Signal of contactor K2
or PT100 temperature sensor
Warning/switch-off
via TSK2 temperature switch
PE
K3 K1
Main motor
M1
OIL
Pump and fan motor
ϑ
M
M2
3
27021615245369739
2.2.4 Main circuit with separate motors for pump and fan
F4
Switch on at
> 60°C
L1
F3
Main motor
control
L2
L3
M
3
PE
K3 K1
Main motor
M1
OIL
Pump motor Fan motor
ϑ
M
M2 M M3
3 3
Signal of contactor K2
or PT100 temperature sensor
Warning/switch-off
via TSK2 temperature switch
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2Oil-air cooler for splash or bath lubrication /OAC
Installation/assembly
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
10
2.3 Installation/assembly
INFORMATION
First adhere to the operating instructions of the oil supply system manufacturer.
2.3.1 Installation and connection information
The cooling system and the gear unit have to be set up separately as standard. As an
option, the cooling system can be mounted to the gear unit as a complete unit. In this
case, the cooling system is delivered with piping but without wiring.
Provide for a low-vibration installation location max. 1 meter from the gear unit. Install
the cooling system at the same level as the gear unit or lower. If this is not possible,
contact SEW‑EURODRIVE.
Install the cooling system in such a way that input and output air can flow unobstruc-
tedly. Provide for sufficient ventilation and protection against dirt.
INFORMATION
For the dimensions of the cooling system and detailed technical data, refer to the op-
erating instructions of the cooling system manufacturer.
2.3.2 Mechanical connection
Connect the cooling system to the gear unit according to the identifying markings and
observing local regulations.
In this respect, observe the following basic conditions:
• Do not reduce the specified cable cross section.
• It is important that you choose the correct wall thickness and material when select-
ing pipes, hoses and screw fittings. Preferably use screw fittings with non-metallic
gaskets.
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