SEW-Eurodrive X Series User manual

*22860851_0317*
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-Water Cooler for Splash or Bath Lubrication /OWC
Edition 03/2017 22860851/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-water cooler for splash or bath lubrication /OWC........................................................... 5
2.1 Structure/function............................................................................................................5
2.2 Wiring diagram (schematic illustration) ...........................................................................9
2.3 Installation/assembly.....................................................................................................11
2.4 Notes on checking the oil level .....................................................................................14
2.5 Startup ..........................................................................................................................15
2.6 Inspection/maintenance ................................................................................................16
2.7 Malfunctions..................................................................................................................17
2.8 Permitted lubricants ......................................................................................................18
22860851/EN – 03/2017

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-Water Cooler operating instruc-
tions. Observe the additional information specified in this document.
This document does not replace the detailed operating instructions.
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2
Oil-water cooler for splash or bath lubrication /OWC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 5
2 Oil-water cooler for splash or bath lubrication /OWC
2.1 Structure/function
2.1.1 Structure
An oil-water cooling system can be used if the thermal rating of the naturally cooled
gear unit or cooling using a fan on the input shaft is not sufficient. The prerequisite for
using an oil-water cooling system is that appropriate cooling water is available on site.
INFORMATION
• Contact SEW‑EURODRIVE if you use chemically aggressive cooling media such
as brackish water or salt water.
• 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-water coolers:
• A plate heat exchanger is used for the oil-water cooling system OWC 005/015/025.
• A shell and tube heat exchanger is used for the oil-water cooling system OWC
10/20/30/40/50/60/70.
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2Oil-water cooler for splash or bath lubrication /OWC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
6
2.1.2 General information
The cooling system including the cooling circuit piping but without electrical wiring is
mounted directly to the gear unit at factory.
Optionally, the cooling system can be delivered on a mounting frame for separate
mounting but without electrical wiring and piping to the gear unit.
The standard delivery of the cooling system includes:
• Pump with directly mounted asynchronous motor
• Oil-water heat exchanger
• Temperature switch /TSK2 with 2 switching points for
– Controlled start of the pump motor at an oil temperature > 60°C
– Monitoring of the cooling group, i.e. warning or gear unit shutdown when the oil
temperature exceeds 90°C
The following cooling system types are available:
• Directly mounted on the gear unit, incl. cooling circuit piping, or
• On the mounting frame, for separate mounting, but without piping to the gear unit
Optional accessories
The cooling system can be equipped with the following components as an option:
• PT100 temperature sensor
• Oil filter with electrical/optical maintenance indicator
– Single filter
– Duplex filter
• Flow rate sensor
• Manometer
• Thermometer
• Thermostat valve
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Oil-water cooler for splash or bath lubrication /OWC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 7
2.1.3 Function
Observe the following control information for the individual components.
Oil-water cooler
The gear unit is cooled by an oil-water cooler.
• SEW‑EURODRIVE recommends using the cooling water at a temperature of 60°C
or higher. An optional thermostat valve can be used for controlling the cooling sys-
tem if the user is required to adjust the switching temperature.
Temperature switch /TSK2
The temperature of the plant is monitored via a temperature switch with defined
switching points.
• At T > 60°C →Pump of the oil-water cooler – ON
• At T < 50°C →Pump of the oil-water 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 →Pump of the oil-water cooler – ON
• At T < 50°C →Pump of the oil-water cooler – OFF
• At T > 90°C →STOP GEAR UNIT/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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2Oil-water cooler for splash or bath lubrication /OWC
Structure/function
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
8
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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Oil-water cooler for splash or bath lubrication /OWC
Wiring diagram (schematic illustration)
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units 9
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
18014415990626059
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2Oil-water cooler for splash or bath lubrication /OWC
Wiring diagram (schematic illustration)
Addendum to the Assembly and Operating Instructions – X.. Series Helical and Bevel-Helical Gear Units
10
2.2.3 Main circuit
F4
Switch on at
> 60°C
L1
F3
Main motor
control
L2
L3
M
3
Signal of contactor K2
via temperature switch TSK2
or temperature sensor PT100
Warning/switch off
PE
K3 K1
Main motor
M1
OIL
Pump motor
ϑ
M
M2
3
19121239947
22860851/EN – 03/2017