SKF TIH L MB Series User manual

SKF TIH L MB
Instructions for use
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2SKF TIH L MB
Figure 1: TIH L MB as delivered Figure 2: TIH L MB after bearing supports
assembly
Figure 3: TIH L MB with open yoke Figure 4: TIH L MB with horizontal
workpiece heating
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3
SKF TIH L MB
Original instructions
EC Declaration of conformity ....................................................................................4
Safety recommendations ..........................................................................................5
1. Introduction .....................................................................................................6
1.1 Intended use ................................................................................................................... 6
1.2 Principle of operation .................................................................................................... 6
1.3 Distinguishing features ................................................................................................. 7
2. Description .......................................................................................................7
2.1 Components ................................................................................................................... 7
2.2 Technical data ................................................................................................................. 8
3. Installation of mains plug ...............................................................................10
4. Preparation for use ........................................................................................10
5. Operation ......................................................................................................11
5.1 Function of displays .....................................................................................................11
5.2 Function of buttons .....................................................................................................11
5.3 TEMP MODE.................................................................................................................11
5.4 TIME MODE ..................................................................................................................12
5.5 Temperature measurement .......................................................................................12
5.6 Change of temperature unit .......................................................................................12
5.7 Demagnetisation ..........................................................................................................12
5.8 Power level selection ...................................................................................................13
6. Safety features ..............................................................................................13
7. Troubleshooting .............................................................................................14
8. Spare parts ....................................................................................................15
Table of contents
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4SKF TIH L MB
EC Declaration of conformity
We,
SKF Maintenance Products
Kelvinbaan 16
3439 MT Nieuwegein
The Netherlands
herewith declare that the following product:
SKF Induction Heater
TIH L MB Series
has been designed and manufactured in accordance with:
EUROPEAN LOW VOLTAGE DIRECTIVE 2006/95/EC
EMC DIRECTIVE 2004/108/EC as outlined in the harmonized norm for
EN61000-6-4:2007 /A1:2011
EN61000-6-2:2005
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN61000-4-11
“With the exception of Conducted Immunity in accordance with EN61000-4-6 in
the frequency range of 17 - 30 MHz”
EUROPEAN ROHS DIRECTIVE 2011/65/EU
Nieuwegein, The Netherlands,
July 2015
Sébastien David
Manager Product Development and Quality
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5
SKF TIH L MB
Safety recommendations
• Because the TIH L MB generates a magnetic field, people wearing a
pacemaker must not be within 5 m (16 ft) of the TIH L MB during operation.
Electronic equipment, such as wristwatches, may also be affected.
• Risk of electrical hazard. Only qualified electrician should open the heater
electrical cabinet.
• Follow the operating instructions at all times.
• Never touch the TIH L MB coil, core, yoke or workpiece during heating.
• During the heating process observe a safety distance of 1 m (3,3 ft) with the
workpiece, the heater coil or the core.
• Use proper handling equipment when lifting heavy workpieces. Secure the
workpiece with appropriate lifting and handling equipment while heating.
• Make sure the voltage supply is correct.
• Avoid contact with hot workpieces. Wear the supplied heat resistant gloves
to handle hot workpieces.
• Never operate the TIH L MB with the cable of the remote control between
the heater core.
• Never operate the TIH L MB without a yoke in position.
• Electrical arcing may occur when a potential difference exists between the
TIH L MB and the workpiece. This is not dangerous to human beings and
will not cause damage to the TIH L MB or the workpiece. However, the
TIH L MB must never be used in areas where there is a risk of explosion.
• Ensure the yoke is applied with the ground faces pointing downward, and in
proper contact with the core uprights.
• Do not modify the TIH L MB.
• The TIH L MB must not be exposed to condensing humidity or direct contact
with water.
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6SKF TIH L MB
1. Introduction
The SKF TIH L MB induction heaters are designed to heat work pieces others than
bearings such as gears, couplings, bushings, pulleys, etc. The heat causes the workpiece
to expand, which eliminates the need to use force during installation. A 90 °C (162 °F)
temperature difference between the workpiece and shaft is generally sufficient to enable
installation. At an ambient temperature of 20 °C (68 °F), the workpiece must therefore be
heated to 110 °C (230 °F).
1.1 Intended use
The TIH L MB has been designed to heat metal workpieces that form a closed circuit.
Examples of acceptable workpieces include housings, bushings, shrink rings, pulleys, and
gears. All workpieces that fit over the yoke and between the induction coils can be heated
using the TIH L MB. In addition, other workpiece can also be placed over the outermost
induction coil. See the illustrations at the beginning of this manual for examples.
1.2 Principle of operation
The principle of operation of the TIH L MB can be compared to a transformer.
The high voltage, low electrical current flowing through a large number of windings in the
TIH L MB’s induction coils induces low voltage, high current electricity in the workpiece.
Because the workpiece has the electrical characteristics of a coil with a single, short-
circuited winding, the high current generates heat within the workpiece. Because the heat
is generated within the workpiece, all of the heater components remain cool.
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7
SKF TIH L MB
1.3 Distinguishing features
• Inductive coil
When heated the workpiece is located at the same position on the core as the
inductive coil. This design improves efficiency, resulting less power consumpton
and faster heating which reduces the costs to heat each workpiece.
• High efficiency
With its advance power electronics and induction coils design, the TIH L MB has a
low power consumption which represents a high energy savings.
• Remote control panel
To improve the ease of use and to help reduce the risk of contact with the hot
workpiece during operation, the TIH L MB heater is supplied with a remote control
panel which can be detached from the heater.
• Sliding yoke
To facilitate the handling of the yoke while placing the workpiece around it or around
the induction coil, the TIH L MB is fitted with a sliding arrangement for the yoke. See
the illustrations at the beginning of this manual.
• Folding workpiece supports
To support large workpiece when positioned horizontally around the induction coil,
the TIH L MB induction heater is provided with two supports.
See the illustrations at the beginning of this manual.
2. Description
The operation of the heater is controlled by the internal electronics in either of two
modes. The operator can either select the desired temperature of the workpiece in
TEMP MODE or set the length of time that the workpiece will be heated in TIME MODE.
The power level can be adjusted to 100% or 50% for slower heating of sensitive
workpieces (for example, materials like aluminum or brass).
2.1 Components
The TIH L MB induction heater contains a U-shaped iron core with one induction coil.
Workpiece supports are delivered to be mounted on the heater. A detachable remote
control panel is included. The remote control electronics and the internal electronics,
control the operation of the heater. A sliding yoke allows the workpiece to be placed onto
the heater. A temperature probe is included with the heater. Heat-resistant gloves are also
included.
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8SKF TIH L MB
2.2 Technical data
Designations type
TIH L 3 3 MB / LV
TIH L 3 3 MB / MV
TIH L 4 4 MB / LV
TIH L 4 4 MB / MV
TIH L 7 7 MB / LV
TIH L 7 7 MB / MV
Operating area Voltage
Width
(dm)
Height
(dm)
LV: 200-240 V (Low Voltage)
MV: 400-460 V (Medium Voltage)
Tecnhnical data
Voltage (±10%) MV: 400-460V / 50-60Hz
LV: 200-240V/50-60Hz
Recommended line
protection
TIH L33/MV: 32 A and TIH L33/LV: 63 A
50 A fuse rating for TIH L44 and TIH L77 MV execution
100 A fuse rating for TIH L44 and TIH L77 LV execution
Power consumption
(maximum)
TIH L33: MV & LV: 15 kVA
TIH L44 & TIH L77: MV: 20,0-23,0 kVA, LV: 20,0-24,0kVA
Temperature control 0-250 °C (32-482 °F); in steps of 1°
Probe type thermocouple, K type
Probe maximum
temperature
250 °C (482 °F)
Time mode 0-99,9 minutes; in steps of 0,1 minute
100-120 minutes; in steps of 1 minute
Power range 100% - 50%
Demagnetisation automatic; residual magnetism <2A/cm
Overall dimensions
with bearing supports
(w ™ d ™ h)
TIH L 33 MB:
Exc. legs 400 ™ 743 ™ 550 mm (15.75 ™ 29.25 ™ 21.65 in.)
Inc. legs 795 ™ 1 123 ™ 550 mm (31.3 ™ 44.21 ™ 21.65 in.)
TIH L 44 MB:
Exc. legs 1 200 ™ 600 ™ 850 mm (47.3 ™ 23.6 ™ 33.5 in.)
Inc. legs 1 550 ™ 1 330 ™ 850 mm (61 ™ 52.4 ™ 33.5 in.)
TIH L 77 MB:
Exc. legs 1 320 ™ 600 ™ 1 150 mm (52 ™ 23.6 ™ 45.3 in.)
Inc. legs 1 850 ™ 1 330 ™ 1 150 mm (72.8 ™ 52.4 ™ 45.3 in.)
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9
SKF TIH L MB
Area between
supports
(width ™ height)
TIH L 33 MB: 330 ™ 320 mm (13 ™ 12.6 in.)
TIH L 44 MB: 465 ™ 492 mm (18.31 ™ 19.4 in.)
TIH L 77 MB: 765 ™ 792 mm (30.1 ™ 31.2 in.)
Coils diameter TIH L 33 MB: 150 mm (5.9 in.)
for minimum workpiece bore diameter of 160 mm (6.3 in.)
TIH L 44 MB & TIH L77 MB: 175 mm (6.9 in.)
for minimum workpiece bore diameter of 185 mm (7.3 in.)
Weight with bearing
supports
TIH L 33 MB: 140 kg (309 lb)
TIH L 44 MB: 324 kg (714 lb)
TIH L 77 MB: 415 kg (914 lb)
Workpiece maximum
weight
Bearing TIH L 33 MB: 700 kg (1 543 lb)
Bearing TIH L 44 MB & TIH L 77 MB: 1 200 kg (2 600 lb)
Solid component: consult SKF
Maximum heating
temperature
approx. 400 °C (752 °F)
Standard yoke
cross section
TIH L 33 MB: 80 ™ 80 mm (3.15 ™ 3.15 in.)
for minimum workpiece diameter of 115 mm (4.5 in.)
TIH L 44 MB & TIH L77 MB: 100 ™ 100 mm (3.9 ™ 3.9 in.)
for minimum workpiece diameter of 150 mm (5.9 in.)
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10 SKF TIH L MB
3. Installation of mains plug
A qualified electrician must install a suitable mains plug. The correct supply voltage is
shown in the designations in section 2.2.
The wires should be connected as follows:
TIH Lxx MB/MV, TIH Lxx MB/LV with 200V-3 phases, and all other three phases
supply execution
Colour of TIH Lxx MB/MV wire Mains supply terminal
yellow / green ground
blue phase 1
brown phase 2
Connect the TIH L MB to only two of the three phases.
TIH Lxx MB/LV with single phase supply
Colour of TIH Lxx MB/LV Mains supply terminal
yellow / green ground
blue neutral
brown phase
4. Preparation for use
• Place the TIH L MB in the horizontal position on a stable surface.
• Assemble the workpiece support with the supplied bolts.
• Connect the mains plug to a suitable mains supply.
• Plug the remote control into the connector on the heater electrical cabinet.
• Slide the sliding yoke in open position. See the illustrations at the beginning of
this manual.
• For workpieces heated over the sliding yoke, follow these steps:
- Lift the workpiece over the heater operating area using appropriate lifting
equipment.
- Slide the yoke through the workpiece bore diameter.
- Close the sliding yoke so that it completely covers the top of both vertical supports
• For workpieces heated around the induction coil, follow these steps:
- Place the workpiece over the induction coil using appropriate lifting equipment.
- For best performance, adjust the position of the workpiece so that the induction
coil is in the centre.
- Close the sliding yoke so that it completely covers the top of both vertical supports.
• If you will use TEMP MODE, plug the temperature probe into its socket on the heater
electrical cabinet. Place the magnetic end of the probe on the innermost surface of
the workpiece.
• Switch on the TIH L MB with the main switch of the heater electrical cabinet
• Observe the self-test of the remote control display and signal tone.
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11
SKF TIH L MB
5. Operation
5.1 Function of displays
• The remote control display shows the selected time
or temperature for heating.
• The power LED’s show the selected power setting. STARTSTOP50%100%POWERTIH RCDisplay Indication
t time in minutes
°C temperature in degrees Celsius
°F temperature in degrees Fahrenheit
5.2 Function of buttons
Button Function
POWER Press to adjust the power. The selected power is indicated with
an LED
MODE Press to switch between TIME MODE and TEMP MODE
UP (+) Press to increase the value shown on the remote control display
DOWN (-) Press to decrease the value shown on the remote control display
START / STOP Press to start or stop the heater. The LED on the START / STOP
button is lit when the heater is heating and flashes during
temperature measurement
5.3 TEMP MODE
• If the remote control display shows ‘t’, press MODE to select TEMP MODE. The remote
control display shows °C or °F in TEMP MODE.
• The selected temperature is shown on the remote control display.
The default temperature is 110 °C (230 °F). If a different temperature is desired,
press UP or DOWN to adjust the temperature in steps of 1°.
• It may be desirable to heat workpieces to temperatures above 110 °C (230 °F) for
increased mounting time. Consult the workpiece specifications to determine the
maximum permitted temperature.
• If needed, press POWER to select the power level. Use the guidelines in section 5.8 to
determine the correct power setting.
• Make sure the temperature probe is mounted as close to the bore as possible.
• Press START / STOP to start the heater.
The remote control display shows the current temperature of the workpiece.
• During heating the selected temperature can be displayed for 1 second by pressing MODE.
• When the selected temperature has been reached, the heater demagnetises the
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12 SKF TIH L MB
workpiece, switches off, and generates an acoustic signal for 10 seconds or until
START / STOP is pressed.
• Press START / STOP to cancel the acoustic signal and stop the heater.
• Remove the workpiece with proper handling equipment.
• If the workpiece remains on the heater, the heater will start again when the
temperature of the workpiece drops 10 °C (18 °F). Press START / STOP to stop the
heater and demagnetise the workpiece.
• The TIH L MB is now ready to heat another workpiece with the same settings.
5.4 TIME MODE
• If the remote control display shows °C or °F, press MODE to select TIME MODE. The
remote control display shows ‘t’ in TIME MODE.
• Press UP or DOWN to adjust the time in steps of 0,1 minute (up to 99,9 minutes) and
1 minute (100 - 120 minutes).
• Press POWER to select the power level. Use the guidelines in section 5.8 to determine
the correct power setting.
• Press START / STOP to start the heater. The remote control display shows the time
that remains.
• During heating, the temperature measured by the probe can be displayed for a couple
of seconds by pressing MODE.
• When the time has elapsed, the heater demagnetises the workpiece, switches off, and
generates an acoustic signal for 10 seconds.
• Press START / STOP to cancel the acoustic signal and stop the heater.
• Remove the workpiece with proper handling equipment.
• The TIH L MB is now ready to heat another workpiece with the same settings.
5.5 Temperature measurement
When the heater is not operating, the temperature of the workpiece can be measured by
pressing MODE and START / STOP at the same time. The LED on the
START / STOP button flashes during temperature measurement. Press START / STOP to
cancel temperature measurement.
5.6 Change of temperature unit
Press MODE and UP at the same time to switch between °C and °F.
The temperature unit setting remains the same even after disconnection from mains
power.
5.7 Demagnetisation
The workpiece is automatically demagnetised when heating is complete. Demagnetisation
will not occur if the power is interrupted or the main switch is switched off. To use the
TIH L MB for demagnetisation only, select TIME MODE and set the time to 0,1 minute
(6 seconds).
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13
SKF TIH L MB
5.8 Power level selection
When heating workpieces with an induction heater, the most of the heat will be generated
in the bore and then transferred through the workpiece. Slow heating ensures that
the workpiece expands more evenly, thereby preventing damage. The large variety of
workpieces precudes the possibility of providing a specific power level setting for each
type. Instead, the following guidelines are provided:
• For sensitive workpieces, with a combination of different materials (such as
aluminum, brass), do not exceed 50% power.
• When using accessory smaller yoke, never exceed 50% power.
6. Safety features
The TIH L MB is equipped with the following safety features:
• Automatic overheating protection.
• Automatic current control.
• Over-current circuit breaker.
• In the TEMP MODE the heater will switch off if the temperature probe does not register
a temperature increase of 1 °C (1.8 °F) every 1 minute (1.00 minute). To increase the
interval to 2 minutes (2.00 minute). press MODE and DOWN at the same time.
• Flashing warning light indicates ongoing heating process in the heaters TIH L44MB
and TIH L77MB.
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14 SKF TIH L MB
7. Troubleshooting
Display Fault Action
E03E Overheated coil
Wait until the induction coil cools. Switch
the heater OFF and then back ON
E05E Temperature increase of less
than 1 °C (1.8 °F) every 1
minute (or every 2 minutes)
Check the temperature probe
connection. If the connection is OK,
select the 2 minutes interval as
described in section 6 or operate the
heater in TIME MODE
E06E Temperature probe not
connected (or defective) or
excessive temperature drop
Check the temperature probe
E10E Electronics communication
problem
Switch the heater OFF and then back
ON. If problem remains return the TIH
to SKF for repair
E11E Electronics communication
problem
Switch the heater OFF and then back
ON. If problem remains return the TIH
to SKF for repair
E12E Electronics communication
problem
Switch the heater OFF and then back
ON. If problem remains return the TIH
to SKF for repair
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15
SKF TIH L MB
8. Spare parts
Designation Description
TIH L33-PMV Power print 400-460V, 50-60 Hz
TIH L33-PLV Power print 200-240V, 50-60 Hz
TIH L33-Y12 Yoke 80 ™ 80 mm (3.15 ™ 3.15 in.) cross section,
complete with sliding rails for TIH L33 heater type
TIH L33-Y8 Yoke 55 ™ 55 mm (2.17 ™ 2.17 in.) cross section (not included)
TIH L33-Y6 Yoke 40 ™ 40 mm (1.57 ™ 1.57 in.) cross section (not included)
TIH RC3 Remote control for TIH L33 type
TIH L-PMV Power print 400-460V, 50-60 Hz
TIH L-PLV Power print 200-240V, 50-60 Hz
TIH L44-Y15 Yoke 100 ™ 100 mm (3.9 ™ 3.9 in.) cross section,
complete with sliding rails for TIH L44 heater type
TIH L44-Y10 Yoke 70 ™ 70 mm (2.7 ™ 2.7 in.) cross section,
complete with handles for TIH L44 heater type (not included)
TIH L77-Y15 Yoke 100 ™ 100mm (3.9 ™ 3.9 in.) cross section,
complete with sliding rails for TIH L77 heater type
TIH CP Control print
TIH RC2 Remote control for TIH L44 & TIH L77 type
TIH CB50A Circuit breaker 50A for TIH L44/MV and L77/MV
TIH CB100A Circuit breaker 100A for TIH L44/LV and L77/LV
TIH CB32A Circuit breaker 32A for TIH L33/MV
TIH CB63A Circuit breaker 63A for TIH L33/LV
TIH P20 Temperature probe K type incl. cable and plug
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© SKF Group 2015/07
The contents of this publication are the copyright of the publisher and may not be reproduced
(even extracts) unless prior written permission is granted. Every care has been taken to ensure
the accuracy of the information contained in this publication but no liability can be accepted for
any loss or damage whether direct, indirect or consequential arising out of the use of the
information contained herein.
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