Garland 7000 User Manual
SERVICE MANUAL
MODUL-LINE
BUILT-IN INDUCTION COOKERS
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MODEL: IN/MO 7000
GARLAND COMMERCIAL INDUSTRIES
185 East South Street
Freeland, Pennsylvania 18224
Phone: (570) 636-1000
Fax: (570) 636-3903
Part # 4526029 (02/22/11) © 2008 Garland Commercial Industries, Inc.
Part # 4526029 (02/22/11) Page 1
GARLAND COMMERCIAL RANGES, LTD.
1177 Kamato Road, Mississauga, Ontario L4W 1X4
CANADA
Phone: 905-624-0260
Fax: 905-624-5669
Enodis UK LTD.
5E Langley Business Centre
Station Road, Langley SL3 8DS Great Britain
Phone: 01753 485900
Fax: 01753 485901
Part # 4526029 (02/22/11)Page 2
TABLE OF CONTENTS
SECTION 1 – REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Authorized Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
“Operation Instructions“ Knowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Knowledge Of Electronic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SECTION 2 – SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Block Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Voltage Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SECTION 3 – INITIAL OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Function control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pan Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SECTION 4 – TROUBLE SHOOTING AND REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Error-Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Additional Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Repair Of Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Generator Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pan detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Repair by Garland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
SECTION 5 – APPENDIX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Internal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Recti er Circuit Board C014. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CPU-Circuit Board C018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power Circuit Board C026 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Recti er And Transistor Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Part # 4526029 (02/22/11) Page 3
SECTION 1 – REQUIREMENTS
Authorized Personnel
The operator has to insure that all installation, maintenance
and inspection work is carried out by authorized and
quali ed personnel who has done a training course at Inducs
Ltd.
“Operation Instructions“ Knowledge
In order to do service work on an induction generator,
the operator must have an extended knowledge of the
“Operating Instructions“.
Knowledge Of Electronic Systems
The service- and maintenance operator must have
knowledge of the following components :
• Diodes
• Z-Diodes (Zener-Diodes)
• Recti ers (2phases and 3phases)
• Power transistor (IGBT)
The operator must know how to measure the electric
potential, current and resistors by means of a digital
multimeter. He also has to know how to check diodes with a
diodes tester.
Part # 4526029 (02/22/11)Page 4
SECTION 2 – SYSTEM DESCRIPTION
Block Schematic
L1,L2,L3
PE
208VAC
230VAC
heatsink
23VAC
ST5
ST2/3,4
4
ST4
CPU
4
ST6
c014
230VAC
ST1
lter coil
300VDC
8
ST1
24VDC
ST8
c026
1x,2x,3x,4 x
LED
24VDC
5
c014
coil
4
ST7
ST1/1,4
supply
24VDC
ST2/1,2
c018
Relay
24VDC
M
fan
230VAC
Part # 4526029 (02/22/11) Page 5
Voltage Supply
• Coil temperature
The power board voltage supply is wired with the power
contactor. On starting the generator, voltage is supplied to
the power board. The transformer is connected directly at the
entrance of the power supply. The transformer supplies two
di erent voltages: 230VAC for the power contactor and the
fan as well as 23VAC for the low voltage supply. The 23VAC
are changed on the circuit board C026 to 24VDC.
The following components are supplied with 24VDC:
• CPU-circuit board (C018)
• IGBT (C026)
• Fan relay (C014)
• External lamps
Power Board
As already stated, the power board is supplied by the power
contactor. The mains current is measured by a current
transformer, directly at the entrance of the 3-phases-recti er,
After the recti er there is a direct voltage of 300V. The
inductance that follows lters high frequency (EU) current .
• Ambient temperature
The power switch (IGBT), the fan as well as the display are
managed in response to these factors.
Display
Two elements are used for this display:
1. LED-group (LED1 - LED8) on the CPU-Circuit board (C018)
2. External lamps (24V), maximum 5 pieces
The ve external lamps are connected with the ve LED’s
(LED1-LED5). Please distinguish between operation lamps
and error lamps. The operation lamp shows what kind of
operation for the respective eld:
• Lamp out: Field is cut out
• Lamp ashes brie y Pan detection (pan is searched)
• Lamp ashes an error code: Error message (see Error
Messages table)
• Lamp continuously on: Power on
At the following power switch (IGBT) an alternating current
of approximately 20kHz is generated. This alternating current
(coil current) is transferred to the induction coil. At the exit
of the circuit board (C026), the coil current is measured by a
current transformer.
Control unit
The control unit is the heart of the generator. This is the CPUcircuit board (C018) with an integrated microprocessor which
manages the whole control system.
The following data are measured:
• Coil current
• Phases current
• Performance rate (Poti)
• Heat sink temperature (IGBT)
The error lamp indicates an error function.
LED1 to LED4 lead to external lamps on the outside, they are
used as operational lamps or as error lamps, depending on
the generator type. If an operation lamp or an error lamp is
shared by two elds (for example the surface covering this
induction type) the display can be overwritten from another
eld. As far as the error code display is concerned, the lower
eld has priority.
LED5 lead to the outside for an external lamp also. This is the
general error lamp for all elds all the time.
In an error, LED6 to LED8 show the error code, but only until
error code 7. If this happens in some errors, the lower eld
and the lower error code have priority.
Part # 4526029 (02/22/11)Page 6
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