Fri-Jado STG User manual

WWW.FRIJADO.COM Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
MODELS
Programmable controls STG5 P
STG7 P
Warmers STW5
STW7
SERVICE MANUAL
STG - ROTISSERIE OVEN MODELS
STW - WARMER MODELS
Model STG7 P
- NOTICE -
This manual is prepared for the use of trained Service Technici-
ans and should not be used by those not properly qualified. If
you have attended training for this product, you may be quali-
fied to perform all the procedures in this manual.
This manual is not intended to be all encompassing. If you have
not attended a training for this product, you should read, in its
entirety, the repair procedure you wish to perform to determine
if you have the necessary tools, instruments and skills required
to perform the procedure. Procedures for which you do not have
the necessary tools, instruments and skills should be performed
by a trained technician.
Reproduction or other use of this Manual, without the express
written consent of Fri-Jado, is prohibited.

Page 2 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
TABLE OF CONTENTS

Page 3Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
TABLE OF CONTENTS
Versions
Version Issue date
dd/mm/yy
Remarks
10/2012 01/10/2012 General update.
03/2014 01/03/2014 Textual changes. Troubleshooting adaped. Exploded views modi-
fied.

Page 4 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
TABLE OF CONTENTS
Index .......................................................................................................................................................... 4
General technical data.............................................................................................................................. 6
Technical data ....................................................................................................................................... 6
Programming instructions for the STG 5 / STG 7 and STW 5 / STW 7................................................... 7
Optional settings for the STG 5 and STG 7 ............................................................................................. 9
Removal and replacement of parts for the STG 5 and STG 7 .............................................................. 11
Right or left side panel........................................................................................................................ 11
Top cover .............................................................................................................................................. 11
Knob ..................................................................................................................................................... 11
Operating panel................................................................................................................................... 12
Electric panel........................................................................................................................................ 12
Display .................................................................................................................................................. 13
Panel and keypad assembly ................................................................................................................ 13
Namepanel........................................................................................................................................... 13
Quartz lamp ......................................................................................................................................... 14
Power and I/O board ........................................................................................................................... 14
High limit thermostat.......................................................................................................................... 15
Main switch.......................................................................................................................................... 15
Contactor.............................................................................................................................................. 16
Blower motor....................................................................................................................................... 16
PT500 sensor......................................................................................................................................... 16
Blower motor bottom rotisserie (stacked STG).................................................................................. 17
Heating element.................................................................................................................................. 17
Drive motor.......................................................................................................................................... 18
Door adjustment (left side) ................................................................................................................. 19
Door glass inside.................................................................................................................................. 19
Door outside ........................................................................................................................................ 20
Removal and replacement of parts for the STW 5 and STW 7 ............................................................ 21
Blower motor....................................................................................................................................... 21
Thermometer ....................................................................................................................................... 21
Thermostat........................................................................................................................................... 22
Main switch.......................................................................................................................................... 22
Heating element.................................................................................................................................. 23
Halotherm lamp................................................................................................................................... 23
Electrical tests and service procedures.................................................................................................. 24
Heating element test........................................................................................................................... 24
Contactor, drive motor and blower test............................................................................................. 24
PT500 sensor test ................................................................................................................................. 25
Keypad test .......................................................................................................................................... 26
Changing quartz light functions......................................................................................................... 26
Control location................................................................................................................................... 27
General troubleshooting list.................................................................................................................. 28
Troubleshooting for the STG 5 / 7 rotisseries ..................................................................................... 28
Troubleshooting for the STW 5 / 7 warmers ...................................................................................... 29
INDEX

Page 5Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
TABLE OF CONTENTS
Analytic troubleshooting list ................................................................................................................. 30
Servicing and repairing the STG 5 and 7 rotisseries .......................................................................... 30
Servicing and repairing of the warmers STW 5 and 7 ...................................................................... 34
Exploded views & partlists..................................................................................................................... 36
STG 5 P - sheet metal work ................................................................................................................. 36
STG 5 P - components .......................................................................................................................... 38
STG 5 P - doors ..................................................................................................................................... 40
STG 7 P - sheet metal work ................................................................................................................. 42
STG 7 P - components .......................................................................................................................... 44
STG 7 P - doors .................................................................................................................................... 46
STW 5 - sheet metal work ................................................................................................................... 48
STW 5 - Components ........................................................................................................................... 50
STW 7 - sheet metal work ................................................................................................................... 52
STW 7 - components............................................................................................................................ 54
Cuircuit diagram STG 5 P..................................................................................................................... 56
Electrical diagrams.................................................................................................................................. 56
Wiring diagram STG 5 P ...................................................................................................................... 57
Wiring diagram STG 5 P (until serial number 100052500) ................................................................ 58
Cuircuit diagram STG 7 P..................................................................................................................... 59
Wiring diagram STG 7 P ...................................................................................................................... 60
Wiring diagram STG 7 P (until serial number 100052500) ................................................................ 61
Cuircuit diagram STW 5....................................................................................................................... 62
Wiring diagram STW 5 ........................................................................................................................ 63
Cuircuit diagram STW 7....................................................................................................................... 64
Wiring diagram STW 7 ........................................................................................................................ 65

Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
Page 6
GENERAL TECHNICAL DATA
This manual covers the STG series rotisserie ovens and the STW series warmers. Ovens and
warming cabinets come in two sizes. Ovens and cabinets will also be delivered in stacked
versions.
• STG5–Ovenwithvespits(15to20chickens)
• STG7–Ovenwithsevenspits(28to35chickens)
• STW5Warmingcabinet.
• STW7Warmingcabinet.
Alloftheinformation,illustrationsandspecicationscontainedinthismanualarebasedon
thelatestproductinformationavailableatthetimeofprinting.
Type STG 5 STGW 5 STG 7 STGW 7 STW 5 STW 7
Power(W) 6500 9300 10200 13700 2800 3500
Fusesneededwithpowerconnec-
tion400V,3N~50…60Hz
(3phaseswithzero)
3x16A 3x16A 3x16A 3x32A - -
Fusesneededwithpowerconnec-
tion200or230V,3~50…60Hz
(3phaseswithoutzero)
3x16A 3x32A 3x32A 3x35A - -
Fusesneededwithpowerconnec-
tion230V,1N~50…60Hz
(1phasewithzero)
----1x16A 1x16A
Standardplugfromfactory5-pole
AccIEC309andCEE-form
16A
3P+N+E
16A
3P+N+E
16A
3P+N+E
32A
3P+N+E - -
Standardplugfromfactorysingle
pole
____2-poleearthed
plug16A
2-poleearthed
plug16A
Netweight(kg) 122 222 181 331 100 150
Grossweight(kg) 159 260 217 382 122 165
Height(mm) 870 1750 1025 2060 870 1025
Width(mm) 825 825 985 985 825 985
Depth(mm) 650 650 850 850 650 850
• Standardsetoftools.
• Metricwrenches,socketsandhexsocketkeywrenches.
• Multi-meterandACcurrentclampmeter.
• Temperaturetester.
• Insulationvaluetester(Megger).
• FieldServiceGroundingKit.
TECHNICAL DATA
GENERALTECHNICALDATA

Temperature Display
Program indicators
Program keys
Buzzer key
Probe key
Temperature key
Up-Down key
Time key
Time display
Temperature hold indicator
Second step indicator
First step indicator
Start/Stop
Rotor key
Time of day
Program end
Second cooking step
First cooking step
Temperature hold process
8888888210 0030
Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014 Page 7
PROGRAMMING INSTRUCTIONS
PROGRAMMING INSTRUCTIONS FOR THE STG 5 / STG 7 AND STW 5 / STW 7
DISPLAY AND KEYS
SETTING THE STG
When the main switch is tuned to “1” the
display lights up and the rotisserie is ON.
SETTING THE STW
Turn thermostatdial to desired temperature.

888210 88881040 888p16 888815pr
888p01 8888prog 888000 88880040
888210 88880040 888000 88880030
Page 8 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
PROGRAMMING INSTRUCTIONS
SETTING ACTUAL TIME 15 PROGRAMS
Press and hold Time of
day key
Press Up or Down key
Release Time of day key
After the unit is swit-
ched-on the time display
indicates: 15PR
Key 1:
1x = program 01
2x = program 06
3x = program 11
Key 2:
1x = program 02
2x = program 07
3x = program 12
ENTERING A PROGRAM
Select Program number
Press both Up and Down
keys during 2 seconds
FIRST COOKING STEP (TIME)
Press Cooking process
key
Cooking symbol lights
up
Press and hold the Time
key
Press Up or Down key
SECOND COOKING STEP (TIME)
Press Grilling process key
Grilling symbol lights up
Press and hold the Time
key
Press Up or Down key
FIRST COOKING STEP (TEMP.)
Press and hold the Tem-
perature key
Press Up or Down key

888180 88880030 888 85 88880000
888 85 88880000 888000 88880040
888195 88880046 888p01 88881055
Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014 Page 9
PROGRAMMING INSTRUCTIONS
Press Temperature Hold
process key
Temperature Hold sym-
bol lights up
Press and hold the Tem-
perature key
Press Up or Down key
Press Start / Stop key
On indicator lights up
Press Rotor key to start
turning the rotor
Press Rotor key again to
stop
Load the rotisserie with
products
SECOND COOKING STEP (TEMP.) TEMPERATURE HOLD
Press and hold Tempera-
ture key
Press Up or Down key
LOADING PROGRAM
Press program number
to load pre-set values
PROGRAM START & LOADING
INTERRUPTING ACTIVE PROGRAM
Press Rotor key
Heaters and front lamp
switch off
Rotor stops
On indicator is blinking
Process time in hold
OPTIONAL SETTINGS FOR THE STG 5 AND STG 7
SET ADDITIONAL BUZZER SIGNAL
Select a pre-defined
program
Press and hold Buzzer
key
Press Down key

888p01 88881030 888210 88880040
888200 88880035 888prh 88880059
888 85 88880046
Page 10 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
PROGRAMMING INSTRUCTIONS
Select a pre-defined
program
Press and hold the Pro-
gram end key
Press Up key
Press and hold Tempera-
ture or Time key
Adjust temperature or
time with Up or Down
key
SET PROGRAM END TIME DISPLAY SET TIME & TEMPERATURE
Select a pre-defined
program
Press Cooking, Grilling
or Temperature hold key
No time indictaion for
Temperature hold
Visible during process or
program selection
ADJUSTING ACTIVE PROGRAM
TEMPERATURE PROBE (OPTIONAL)
Press the Rotor key
Insert the probe in the
meat up to the core
Press Temperature sen-
sor key; after 20 seconds
the temperature reading
swtiches off
PREHEAT INDICATION
Under 40°C (104°F) the
display shows PRH
INDICATIONS DURING PROCESS
• Processindicatorsshowsactualprocess.
After completion indicator switches off
• Timedisplayshowsremainingprogram 
time which is the sum of the remaining
cooking and grilling time
• Temperaturedisplayindicatesactual
temperature in the grill. Under 40°C
(104°F) the display shows PRH (preheat)
• Whenremainingtimereaches0,the
process indicators and the On-indicator
switches off

Page 11Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
WARNING: Disconnect the electrical power to the machine
at the main circuit box. Place a tag on the circuit box indica-
ting the circuit is being serviced.
1. Remove the screws that secure the panel
to the frame.
2. Remove the panel.
3. Reverse the procedure to install.
1. Remove the left side panel according
prior procedure.
2. Remove the screws securing both large
and small top covers.
3. Remove the top cover. (Lift at left side
and remove to the left).
4. Reverse the procedure to install.
Note: STG 5 has an optional special top cover
for access to the circulation blower. Standard
no cover for the blower.
1. Remove cover plate on the knob with a
small screw driver.
2. Loosen the srew inside the knob.
3. Remove the knob with ring.
4. Reverse the procedure to install.
Note: check that the ring behind the knob is
in the right position and runs free from the
panel.
REMOVAL AND REPLACEMENT OF PARTS FOR THE STG 5 AND STG 7
RIGHT OR LEFT SIDE PANEL
TOP COVER
KNOB

Page 12 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
1. Remove the right side panel according
prior procedure.
2. Remove the knob according prior proce-
dure.
3. Remove the screw that secures the panel.
4. Remove the 2 bolts on the backside of the
instrument panel (top and bottom side,
only for the STG 7).
5. Remove the screws that secure the meat
probe holder and remove the holder (if
supplied).
6. Remove the flatcable on the power sec-
tion.
7. Remove the clip on the back, top left side
that secures panel and frame.
8. Remove the instrument panel.
9. Reverse the procedure to install.
1. Remove the operating panel according
prior procedure.
2. Remove on the front side the screws that
secure the panel.
3. Remove on the inside bottom of the elec-
tric panel the bolt and nuts.
4. Disconnect the wiring.
5. Slide the electrical panel backwards.
6. Reverse the procedure to install.
OPERATING PANEL
ELECTRIC PANEL

Page 13Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
1. Remove the right side panel according
prior procedure.
2. Disconnect the flatcable on the display.
3. Remove the clip on the back, top left side
that secures panel and frame.
4. Remove the nuts and washers on the
backside of the display and remove the
metal cover.
5. Remove the nuts and plastic rings that
secure the board and remove the board.
Do not forget to disconnect the blue con-
nector on the board.
6. Reverse the procedure to install.
1. Remove the operating panel according
prior procedure.
2. Remove the display according prior proce-
dure.
3. Remove the nuts that secure the keypad
and remove the keypad.
4. Reverse the procedure to install.
1. Remove the operating panel according
prior procedure.
2. Remove the 4 nuts that secure the panel
and remove panel.
3. Reverse the procedure to install.
DISPLAY
PANEL AND KEYPAD ASSEMBLY
NAMEPANEL

JP3 & JP4
Page 14 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
Caution: Do not touch the glass with your
hands. The moisture from your hands could
affect the live span of the lamp. This moi-
sture can be removed with alcohol while the
lamp is cold.
Note: Use a clean rag or paper towel to re-
place the lamp.
1. Remove the insulators of the lamp.
2. Remove the bolt from each end of the
lamp and remove the lamp.
3. Install the lamp with the painted side to-
wards the top of the oven. Hold the metal
with your hand when tightening the bolts
to prevent the metal from twisting and
damaging the lamp.
4. Tighten the insulators evenly to prevent
damage.
1. Remove the right side panel according
prior procedure.
2. Disconnect wiring and flatcable on the
board.
3. Remove the board from the clips by pres-
sing the clips together.
4. Reverse the procedure to install.
Note: When installing new board, ensure
that JP3 and JP4 on new board are set the
same as on the old board.
QUARTZ LAMP
POWER AND I/O BOARD

Main switch till serial
number 100050804
New main switch
Page 15Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
1. Remove the right side panel according
prior procedure.
2. Remove the suction and fan plate on the
inside of the oven.
3. (STG 5 only) Remove the nut on the clamp
and slide clamp towards yourself. Loosen
the screw in the clamp that secures the
probe and remove the probe.
4. (STG 7 only) Remove the thermostat-pro-
be from the clip in the oven and guide it
outside through the opening in the side
wall.
5. Remove the screws on the electric panel
that secure the thermostat.
6. Remove the thermostat and disconnect
the wiring.
7. Reverse the procedure to install.
Note: Set the new high limit thermostat to its
maximum position.
1. Remove the instrument panel according
prior procedure.
2. Loosen the screws on the electric panel
that secure the switch.
3. Remove the switch and disconnect the
wiring.
4. Reverse the procedure to install.
Note: The main switch until serial nuber
100050804 is different than the new
main switch.
HIGH LIMIT THERMOSTAT
MAIN SWITCH
STG7
STG5

Page 16 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
1. Remove the right side panel according to
prior procedure.
2. Disconnect the wiring of the sensor.
3. Remove the screw that secures the sensor
and remove the sensor.
4. Reverse the procedure to install.
Note: The wiring cable is an insulated cable
with an earthing screen.
PT500 SENSOR
1. Remove the right side panel and the top
cover according to prior procedures.
2. Remove the rotor discs, suction and fan
plate on the ceiling inside the oven.
3. Remove the wing nut on the fan blade
and remove fan blade. (Left handed
threads)
4. Disconnect wiring of the motor.
5. Remove the screws that secure the motor
and remove the motor.
6. Reverse the procedure to install.
Note: The blowers are equipped with a capa-
citor of 1,5 uF. Check the direction of rota-
tion of the motor (clockwise, see arrow) and
change the wiring if necessary.
CONTACTOR
BLOWER MOTOR
1. Remove the right side panel according
prior procedure.
2. Disconnect the lead wires to the switch.
3. Push the locking tab down with a screw
driver and lift the contactor out to remo-
ve it from the mounting bracket.
4. Reverse the procedure to install.

Page 17Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
BLOWER MOTOR BOTTOM ROTISSERIE (STACKED STG)
1. Remove the right side panel according prior
procedures.
2. Remove the rotor discs, suction and fan
plate on the ceiling inside the bottom oven.
3. Remove the wing nut on the fan blade
and remove the fan blade. (Left handed
threads).
4. Remove fat drawer from upper oven.
5. Remove the bolts that secure the interme-
diate plate and remove this plate.
6. Remove the drip trays from the upper oven.
7. Remove the bolts that secure the top plate
(STG 5 must have a special top cover!) and
remove the top plate.
8. Disconnect wiring of the motor.
9. Remove the screws that secure the motor
and remove the motor.
10.Reverse the procedure to install.
Note: The blowers are equipped with a capaci-
tor of 1,5 uF. Check the direction of rotation of
the motor (clockwise, see arrow) and change
the wiring if necessary.
1. Remove the rotor discs, right side panel,
suction and fan plate according prior pro-
cedures.
2. Disconnect the wiring from the element.
3. Remove the mounting nut.
4. Remove the element from the mounting
clip and pull it from the wall.
5. Reverse the procedure to install.
HEATING ELEMENT
STG7
STG5

Page 18 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
DRIVE MOTOR
1. Remove the right side panel and rotor
discs according prior procedure.
2. Disconnect the wiring of the motor.
Check where the wire, marked A is con-
nected.
3. Remove the screws that secure the fan
cover and remove the cover.
4. Note down how far the drive arm or
drive block sticks out from the inner wall
(see white or black arrow).
5. (TDR 5 only) Remove the nuts that secure
the motor and remove the motor.
6. (TDR 7 only) Set the drive arm in a positi-
on vertical downwards. This can be done
manually or by turning the fan blade by
hand.
7. Mark the position of the motor support
with a marker.
8. Remove the bolts that secure the motor
and the nuts that secure the motor sup-
port and remove the motor.
9. Check the white Teflon ring. Replace this
if necessary.
10. Check the position of the red gasket bet-
ween motor support and the side wall.
Replace this if necessary.
11.Install the fan blade on the new motor.
12.Reverse the procedure to install.
Note: Always make a test run of 15 minutes
on maximum temperature to insure the mo-
tor is well mounted and adjusted and turns
parallel to the side wall.

A
A
B
C
Page 19Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
1. Remove the left side panel according
prior procedure.
2. Loosen the nuts (A) of the upper hinge.
The door must be closed.
3. Loosen the locknut (B) and adjust the bolt
(C) in or out to adjust the door.
4. Tighten the nuts of the hinge and mount
the left-hand panel.
1. Lift the door upward out of the hinges
and place it on a table.
2. Remove the cap nuts and rings on the
profiles of the door.
3. Remove the profiles from the glass.
4. Mount the profiles on the new glass. Do
not forget the teflon rings of 2 mm inside
the holes.
5. Mount the cap nuts and rings.
6. Place the door in the hinges.
Note: Tightening of nuts max. 6 Nm.
DOOR ADJUSTMENT (LEFT SIDE)
DOOR GLASS INSIDE

Page 20 Service Manual STG5/7 STW5/7 form 9123659 rev. 03/2014
REMOVAL AND REPLACEMENT OF PARTS
DOOR OUTSIDE
1. Lift the inner door out of the hinges and
lay this aside.
2. Remove the left side panel according prior
procedure.
3. Remove the 2 nuts behind the upper hinge
and loosen the locknut according prior
procedure. The door must be closed.
4. Hold the door on both sides and move
this towards yourself, before lifting it out
of the hinge on the bottom side. See to it
that the washers stay on the hinge.
Also remove the top hinge.
5. Place the top hinge on the new door.
6. Place the new door on the hinge on the
bottom side and push the 2 studs on the
top hinge through the openings on the
top side and screw the nuts on it .
7. Adjust the door according prior procedure.
Note: Tightening of nuts max. 6 Nm. or
4.5 lbf.ft