simatherm IH 240 Manuale utente
Bedienungsanleitung
Instruction for use
Mode d‘emploi
Manuale d‘instruzioni
Manual de instrucciones
Induction Heater IH 240
© simatec ag Induktionsheizgerät IH 240 2
© simatec ag Induction Heater IH 240 16
Table of contents
EU-Declaration of conformity 17
Safety recommendations 18
1 Introduction 19
1.1 Intended use 19
1.2 Principle of operation 19
2 Technical description 20
2.1 Components 20
2.2 Technical data 21
3 Installation of main plug 21
4 Preparation for use 22
5 Operation 23
5.1 Function of displays 23
5.2 Function of buttons 23
5.3 Temp Mode 24
5.4 Time Mode 25
5.5 Temperature measurement 25
5.6 Change of temperature unit 25
5.7 Demagnetisation 25
5.8 Power level selection 26
6 Safety features 26
7 Troubleshooting 27
8 Spare parts 27
© simatec ag Induction Heater IH 240 17
English
EU-Declaration of Conformity
We, simatec ag
Stadthof 2
CH-3380 Wangen a. Aare
declare that the
Induction Heater
simatherm IH 240
is designed and manufactured in accordance with
EUROPEAN LOW VOLTAGE DIRECTIVE 73/23/EEC
EMC NORM 89/336/EEC
The follwoing norms are used:
Harmonized Norms:
EN 60519-3 :1996
EN 55011
EN 61000-6-2
EN 61000-3-3/3
National Norms:
VDE 0721
Wangen a. Aare, 2005-02-01
Mischa Wyssmann
Managing Direktor / CEO
© simatec ag Induction Heater IH 240 18
Safety recommendations
• Because the IH 240 generates a magnetic field, people wearing a
pacemaker must not be within five meters of the IH 240 during ope-
ration. Electronic equipment, such as wristwatches, may also be affec-
ted.
• Follow the operating instructions at all times.
• Be certain that the voltage supply is correct.
• Electrical arcing may occur when a potential difference exists between
the IH 240 and the workpiece. This is not dangerous to human
beings and will not cause damage to the IH 240 or the workpiece.
However, the IH 240 must never be used in areas where there is a
risk of explosion.
• Do not expose the heater to high humidity.
• Never operate the IH 240 without a yoke in position.
• Do not modify the IH 240.
• Use proper handling equipment when lifting heavy workpieces.
• Avoid contact with hot workpieces. Wear the supplied heat resistant
gloves to handle hot workpieces.
© simatec ag Induction Heater IH 240 19
English
1 Introduction
The simatec IH 240 induction heater is designed to heat bearings that are
mounted with an interference fit onto a shaft. The heat causes the bearing
to expand, which eliminates the need to use force during installation.
A 90 °C temperature difference between the bearing and shaft is generally
sufficient to enable installation. At an ambient temperature of 20 °C,
the bearing must therefore be heated to 110 °C.
1.1 Intended use
The IH 240 has been designed to heat rolling bearings. However, other
metal workpieces that form a closed circuit can also be heated. Examples
of acceptable workpieces include bushings, shrink rings, pulleys, and
gears. All bearings that fit over the inductive coil and between the vertical
supports with the sliding yoke in place can be heated using the IH240.
In addition, smaller bearings can be placed over the sliding yoke. See the
illustration at the beginning of this manual for example.
1.2 Principle of operation
The IH 240 generates heat by
means of a large electrical current
that is magnetically induced in
the workpiece by a coil within the
heater. The high voltage, low
current electricity flowing through
the large number of windings in
the inductive coil 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.
© simatec ag Induction Heater IH 240 20
2 Description
The heating cycle is electronically controlled either in a TIME MODE,
where the heating time is selected, or in a TEMP MODE where the
desired temperature is selected.
The heater can further be run on 50% capacity when small yokes are used
or when there is a risk for too quick heating of sensitive workpieces (e.g.
bearings with C1 or C2 clearance).
2.1 Components
The induction heater consists of a U-shaped iron core with a large induction
coil on one of its legs. The control electronics sits in a separate control box
on top of the heater.
The temperature is controlled by means of a magnetic probe.
© simatec ag Induction Heater IH 240 21
English
2.2 Technical data
Voltage (± 9%) 400 V / 50 Hz
460 V / 60 Hz
575 V / 60 Hz
Recommended circuit protection 63 A circuit breaker
Power consumption (maximum) 24 kVA (400 V / 50 Hz)
24 kVA (460 V / 60 Hz)
24 kVA (575 V / 60 Hz)
Temperature control 0–250 °C, in steps of 1°
Probe maximum temperature 250 °C
Time mode 0–60 minutes, in steps of 0.1minute
Power reduction 50%
Demagnetisation, automatic Residual magnetism < 2 A/cm
Overall dimensions 750 x 400 x 935 mm
Area between supports 330 x 355 mm
Coil diameter 186 mm
Weight (with yokes) 300 kg
Workpiece maximum weight 1200 kg
Maximum heating temperature ca. 400 °C
Standard yoke dimensions 100 x 100 x 570 mm
(for Øof 142 mm)
3 Installation of main plug
Due to the many types of mains plugs, no mains plug is supplied with
the IH 240. A qualified electrician must install a suitable mains plug.
The correct supply voltage is shown in section 2.2. The wires should be
connected as follows:
Colour of IH 240 wire Mains supply terminal
yellow / green ground
brown phase 1
blue phase 2
Connect the IH 240 to only two of the three phases. Verify that the
correct cicuit breaker is installed. See section 2.2 for circuit breaker
specifications.
© simatec ag Induction Heater IH 240 22
4 Preparation for use
• Place the IH 240 in the horizontal position on a stable surface.
• Connect the mains plug to a suitable mains supply.
• For workpieces with an internal diameter large (>186mm) enough to fit
over the inductive coil, follow these steps:
- Place the workpiece over the inductive coil using appropriate
lifting equipment.
- For best performance, adjust the position of the workpiece so
that the inductive coil is in the centre.
- If the sliding yoke is not installed on the IH 240, follow the
steps shown in the illustrations at the beginning of this manual.
Remove the protective film from the bright underside of the
sliding yoke before the first use.
- Slide the sliding yoke to the right so that it completely covers the
top of both vertical supports.
• For workpieces that do not fit over the inductive coil, should be heated on
the horizontal yoke.
• If you will use TEMP MODE, plug the temperature probe into the
connector on the left side of the heater. Place the magnetic end of the
probe on the inner ring of the bearing or on the innermost surface of the
workpiece.
• Switch the IH 240 on using the power switch on the left side.
B
A
© simatec ag Induction Heater IH 240 23
English
5 Operation
5.1 Function of displays
A) The main display shows the selected time or temperature for heating.
Display Indication
t time in minutes
°C temperature in degrees Celsius
°F temperature in degrees Fahrenheit
B) The power display shows the selected power setting.
5.2 Function of buttons
Button Function
POWER control lamp for main switch on
TIME TIME MODE
TEMP TEMP MODE
BEARING BEARING MODE - recommended heating temperature for
bearings of 110°C (230°F) is automatically selected.
START/STOP To start and stop heating.
ON/OFF Press to start or stop the heater.
50% Power reduced to 50%.
100% Full capacity.
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