Module: 1 OVEN BODY
Description: Sheet metal panels
Number: 603-1-001
Page:
1(1)
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present
Trouble
An exterior wall panel is
damaged.
Suggested Measures
Remove the self-tapping screws along the underside of
the damaged panel(s) and on the roof strip(s) above the
damaged panel(s). The roof strips are attached to the
upper frames with rivet part no. 50622701
When changing the panel(s), be sure that the insulation
material is not moved out of position.
The upper part of the panel should be kept in position
against the frame only by the roof strip.
WARNING: To avoid buckling of panel, do not attach
the upper lip of the panel to the frame (w
rivets)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: June 06, 1997
Signed:
Special
tools
needed
Drilling
machine.
4.8
(3/16”) mm
drill-bit
8 mm
(5/16”)
wrench
rivet pliers
ith screws or
Module: 1. OVEN BODY
Description: Gaskets
Number: 603-1-002
Page:
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
Fume leakage from the
joints between the
heating and baking
sections and/or front and
rear baking section.
Suggested Measures
If fume leakage is confirmed (it may be difficult to find
the exact location) between the heating and baking
sections
and/or the front and rear baking section, the leak should
be sealed with Revent silicone glue, part no. 50217401
(#50222801 US ovens).
In case of leakage where no leak can be located, the
oven must be divided and the joints cleaned from the
attached sealing material for resealing.
New sealing material must be applied as described in
the chapter "Assembling instructions"
WARNING: Fume leakage for an extended period of
time, will start the rust process between the outer and
inner oven body.
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600
Module: 2. DOOR ASSEMBLY
Description: Door locking
Number: 603-2-001
Page:
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle side of
the door is not closing
tight against the door
seal.
Suggested Measures
1) The ball bearing, part no. 50197601 on the locking
bracket, has to be readjusted.
2) The locking lid in the latch assy, part no. 41276190
is worn out. The latch assy has to be replaced. If the
latch assy has to be replaced, the door handle must
first be removed. The square steel may be difficult
to remove from the latch assy. In that case the
square steel should be cut from the inside of the
latch assy.
If the latch assy has to be replaced, it is advisable to
be equipped with a spare square steel (part no.
50108002) and pin (part no. 50108003).
Apply some graphite grease on the square steel
before remounting the door handle.
Special tools
needed
Universal
saw with a
"stiletto" saw
blade.
Mandrel 4
mm (0,16”)
Module: 2 DOOR ASSEMBLY
Description: Door glass
Number: 603-2-002
Page: 1(1)
This instruction is for ovens with serial numbers from 96.2432.431 to present.
Trouble
The door glass is broken. Remove the door from the oven to be able to effectively
Suggested Measures
replace the broken glass. Set the door face up so that it
rests in a level (horizontal) position.
Remove the lamp cover, the fluorescent lamp, the lamp
holders on the right and the cover on the left side of the
window.
Remove the upper and lower cover strips. These strips
are glued and riveted against the door frame and they
will probably be damaged during the disassembly
caused by the glue.
Clean the door glass bracket from glue and glass
pieces.
Apply silicone glue, part no. 50217401, on the bracket
and replace the new glass. Remount the cover strips,
part no. 40899601. Use silicone glue, part
no.50217401, and rivets, part no. 50622701.
It is advisable to use new cover strips part no.
40899601.
Carefully remove the silicone glue surplus on the glass
as long as it is soft.
IMPORTANT:
Confirm that the glass is installed correctly (not back to
front or upside down). Do this by reading the warning
sign written on the glass.
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: May 18, 2005
Signed:
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600.
Module: 2. DOOR ASSEMBLY
Description: Door handle
Number: 603-2-003
Page:
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle will not
stay in horizontal position
when the door is opened.
The door handle is
wobbling in the door
handle frame.
The door handle comes
loose from the door
handle frame.
Suggested Measures
The door handle assy, part no. 31169690, or possibly
the bushing, part no. 50108004, inside the door handle
frame needs to be replaced.
The pin, part no. 50108003, placed through the square
steel which holds the door handle against the frame
needs to be replaced.
If the door handle is difficult to remove from the latch
assy, please refer to instructions in this manual, section
no. 603-2-001, A door locking@.
Special tools
needed
Mandrel 4
mm (0,16”)
Mandrel 4
mm (0,16”)
Module: 2. DOOR ASSEMBLY
Description: Door hinge
Number: 603-2-004
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
The door hinge side of
the door is not closing
tight against the door
seal.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Suggested Measures
The hinge bushings, part no. 50196001, in the hinge
upper and lower frame part should be replaced.
Proceed as follows, same procedure to replace both
upper and lower bushings:
• Let oven door stay in locked position
• Dismount ceiling in canopy
• Dismount cover plate on RH side of door
• Loosen the screws holding the lower part of
hinge to the oven body
• Pull down hinge part
• Press out old bushing
• Press in a new bushing
• Remount removed parts
Special tools
needed
Module: 2. DOOR ASSEMBLY
Description: Door seal
Number: 603-2-005
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to 92.0332.010.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to 92.0532.015.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Trouble
Fumes are leaking from
between the door and
door frame.
This instruction is for 603 ovens with serial numbers from 93.0332.078 to present.
This instruction is for 605 ovens with serial numbers from 92.0532.016 to present.
Trouble Suggested Measures Special tools
Fumes are leaking from
between the door and
door frame.
Fumes are leaking from
the bottom of the door.
Suggested Measures
The door seal, 5 m (16,4’) of part no. 50110700, is worn
out and needs to be replaced.
The door seal, 5 m (16,4’) of part no. 50201001, is worn
out and needs to be replaced.
The surface where the gasket is to be mounted has to
be cleaned with detergentto remove old glue and gasket.
The seal, part no. 40613102, on the under side of the
door has to be adjusted or, if worn out, replaced.
Special tools
needed
Silicone glue,
part no.
50217401.
Gun, part no.
50159600.
needed
Silicone glue,
part no.
50217401.
Gun, part no.
50159600.
Module: 3. FAN SYSTEM
Description: Fan shaft v-sealing
Number: 603-3-001
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
Steam is leaking from the
oven chamber, through
the fan device unit.
Noise is coming from the
fan device unit.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: June 06, 1997
Signed:
Suggested Measures
Remove the air duct panel on the left side in the baking
section covering the heat exchanger.
Make a mark of how the fan inlet cone is placed before
removing it. This to be sure to reinstall it in the correct
position.
Remove the v-belts
Take the fan wheel off the fan shaft.
Remove the fan shaft assembly from the fan cover and
replace the v-seal, part no.50140304.
Reinstall fan shaft assembly, the fan wheel, air duct
panel and the V-belts .
Check the above v-seal.
Refer also to section no. 605-3-002 in this manual.
Special tools
needed
Pulley drag
(mechanical
push-puller)
Module: 3. FAN SYSTEM
Description: Bearings
Number: 603-3-002
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
Noise is coming from the
fan device unit.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Suggested Measures
Check the roll and ball bearing in the fan shaft assembly
For dismantling the fan assy, please refer to section
605-3-001 A fan device v-sealing in this manual.
Check the grease level in the bearing housing.
Special tools
needed
Pulley drag
(mechanical
push-pulley)
Module: 3. FAN SYSTEM
Description: Fan motor
Number: 603-3-003
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The oven fan does not
start.
Noise is coming from the
top of the motor
Suggested Measures
1. The oven door is not closed.
2. The steam cycle is on.
3. The motor circuit breaker has tripped and has to
be reset (14). If the overload trips repeatedly,
call for service.
4. On oil and gas ovens, the burner stops when the
high limit switch has tripped. If the high limit trips
repeatedly, call for service.
5. The limit switch for the oven door is not working
properly and should be adjusted or replaced.
6. Check the voltage on terminals P6/31 and P6/30.
It should read 0 volt if the oven door is closed
and the limit switch is activated. It should read
12 volt if the door is open or the limit switch is
not activated.
7. The motor contactor is defective and should be
replaced.
8. Check if the terminals A1-A2 on the motor
contactor are energized. Always check against
neutral.
9. Check the motor Voltage/Amp. per phase. With
repeated tripping of the motor circuit breaker the
motor voltage/amp. per phase should be
checked.
10. The motor is defective and should be replaced.
Remove the motor canopy and check if the motor
cooling disc is loose from
broken.
the shaft (look for cracks) or is
Special tools
needed
Module: 3. FAN SYSTEM
Description: Fan Wheel
Number: 603-3-004
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460(1978) to present.
Trouble
Vibrations in the fan
wheel device.
SERVICE
INSTRUCTION
603/605
Suggested Measures
Check for damage and/or if the fan wheel is out of
balance.
Issued by: PM
Approved by: TH
Issue date: June 06, 1997
Signed:
Special tools
needed
Pulley drag
(mechanical
push-pulley)
Module: 4. AIR DISTRIBUTION
Description: Adjusting the air
distribution panel
Number: 603-4-001
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
Uneven baking
Issued by: PM
SERVICE
INSTRUCTION
603/605
Approved by: TH
Issue date: June 09, 1997
Signed:
Suggested Measures
HEAT BALANCING
Before re-adjusting the heat distribution, check that the
original setting is correct. Refer to the Abaking setting
report@ located in the instruction handbook delivered
with the oven.
Also before adjusting, check that the rack configuration
is correct. There should be a minimum distance of 190
mm from the floor to the bottom of the first tray. There
should also be a minimum clearance distance between
the top of the finished baked product on each tray and
the tray which is placed directly above. Refer to the
Revent dealers guide, section 4 for more information
about rack configuration requirements.
NOTE: It is better to decrease than increase the hole
diameters of the air distribution w
See procedures on following pages
all
Special tools
needed
Measuring
gauge
Module: 4. AIR DISTRIBUTION
Description: Adjusting the air
distribution panel
Number: 603-4-001
Page:
2(2)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Uneven baking
adjustment procedures
Issued by: PM
SERVICE
INSTRUCTION
603/605
Approved by: TH
Issue date: June 09, 1997
Signed:
Procedure:
1) Start by baking a complete rack load of the same
shaped bread.
2) Record the baking results on the rack diagram of the
test report form under the heading " Before adjusting".
Start with the bottom tray of the rack and work
upwards. If two trays are baked side by side, it is
considered as one large tray.
a) If the baking results are perfect, record this by
marking a "0" in the middle of the line which
corresponds to the respective tray.
b) If the baked goods on the tray are too light in the
centre of the tray, record this by marking "-" in the
middle of the line. If it is too light on an edge of a
tray, mark a "-" on the applicable side of the line
corresponding to the respective tray. If the baking
results are very light, mark"--".
c) If the baked goods on the tray are too dark, record
this by marking a "+" in the same manner as
above.
d) The markings as described in points b and c can
be combined.
MARKINGS: 0 = perfect bake
= baked goods are too light
-
-- = baked goods are very light
+ = baked goods are too dark
++ = baked goods are very dark
Module: 4. AIR DISTRIBUTION
Description: Adjusting the air
distribution panel
Number: 603-4-001
Page:
3(3)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
3) Always make the first adjustment by increasing or decreasing 1
mm. In this way it is possible to go back half way if necessary.
A suitable measuring gauge is a drill-bit shaft.
If the bread is too light, the heat transfer should be increased.
This is achieved by increasing the openings of the air
distribution panel. If the bread is too dark, the heat transfer
should be decreased. This is achieved by decreasing the size
of the openings.
a) Look at the results of your test report to see which tray(s)
needs adjusting. Determine if the change is needed in the
centre or on a tray edge.
b) Measure the height from the floor to the lower edge of this
particular tray in the rack.
c) Mark off this height on the air distribution panel.
d) Increase or decrease the opening on the panel plate which
lies just under the mark on the wall (due to upward air flow).
The air flow from the right and left row of the air distribution wall
should be directed to the centre of the baking chamber at an angle
of 70°.
Note! Before adjusting, measure the existing opening and make a
note of it. The air direction from the air distribution wall is directed
upwards. Because of this, the adjustment must be on a lower level
than the marked tray. The air generally blows upward at an angle
of 70°.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: June 09, 1997
Signed:
e) Register the new values in the test report.
Special training in baking adjustments is available at the Revent
factory. Contact the marketing and sales department to organize a
training session if desired.
pp
Module: 5. HEATING SYSTEM
Description: Burner
Number: 603-5-001
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for 605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
B urner maintenance.
The burner does not
start.
Suggested Measures
WARNING!
1. Only allow a REVENT AUTHORIZED
SERVICE COMPANY to adjust the burner.
Special instruments and training are
required.
2. Any modifications of the burner will void
arranty and will invalidate Safety Agency
w
Certification.
3. Damage to ignition control could result in
fatal accidents. Do not attempt to repair or
disassemble the ignition control. Ignition
control that has been w
4. Calling for burner service and maintenance
of safety
responsibility of the owner/operator.
5. It is required that the burner is checked
once a y
manufacturer.
6. For maintenance and service of the burner
follow
manual.
devices in this oven is the sole
ear by a representative of the
the instructions in the burner
1. Check that the oven main switch is on.
2. On electric heated ovens, the circuit breaker
fuse for the instrument control panel should be
checked.
3. Check that the oven door is closed. If it is not,
the green light at the right side of the start
button should be flashing.
4. Check if red light between set point and actual
temperature is lit.
5. The temperature limit control has tripped and
should be reset.
6. The burner has tripped and should be reset.
The procedure for resetting the burner varies
depending on manufacturer, follow instructions
in the burner manual.
7. The control fuse or the circuit breaker of the
burner has tri
ed and should be reset. If the
et must be replaced.
Special tools
needed
p
Module: 5. HEATING SYSTEM
Description: Burner
Number: 603-5-001
Page:
2(2)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for 605 ovens with serial numbers from 94.xxxx.xxx to present.
The temperature in the
oven does not rise.
(oil and gas ovens only).
circuit breaker trips repeatedly, call for service.
8. The motor overload protector for the circulation
fan has tripped and should be reset (14). If it
trips repeatedly, call for service.
9. The motor overload protector for the stack
fan/draft induction fan has tripped and should
be reset (12). If it trips repeatedly, call for
ice.
serv
10. 4TR (Stack fan/Draft induction fan timer) is
defective and should be replaced.
1. Is the burner energized?
IF YES,
- Contact your burner service.
IF NO,
- check that the stack fan/induction fan is
energized.
2. Is the stack fan/induction fan
energized?
IF NO,
- check the stack fan/draft induction fan
circuit.
IF YES,
- check that the main fan is energized
3. Is the main fan energized?
IF NO,
- check the main fan circuit.
IF YES,
- check that the temperature limit switch
has not tripped. If the temperature limit
switch is O.K., check the therm
function on the digital control unit.
WARNING
For problems related directly to the function of the
burner, refer to the burner manual and/or contact an
authorized burner technician.
1. Check if the red light between the set point and
actual temperature is lit. If it is lit, call for service.
2. The tem
erature limit control has tripped and
ostat
Module: 5. HEATING SYSTEM
Description: Burner
Number: 603-5-001
Page:
3(3)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for 605 ovens with serial numbers from 94.xxxx.xxx to present.
should be reset.
3. The burner has tripped and should be reset. To
reset the burner, power must be interrupted to
the burner. This can be done by turning oven
temperature down below set point and then
turning back up to set point.
4. The control fuse or the circuit breaker of the
burner has tripped and should be reset. If the
circuit breaker trips repeatedly, call for service.
5. The motor overload protector for the circulation
fan has tripped and should be reset (14). If it
trips repeatedly, call for service.
6. The motor overload protector for the draft
induction fan has tripped and should be reset
(12). If it trips repeatedly, call for service.
7. The burner capacity is too low. An authorized
service engineer should adjust and clean the
burner.
The burner is damaged by
back-flowing hot air after
the oven is switched off.
The draft in the chimney is not sufficient. A stack
fan/draft induction fan should be installed. The fan must
run for 15 min. after the oven is switched off.
Module: 5. HEATING SYSTEM
Description: Checking the heat
exchanger
Number: 603-5-002
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
Smoke from the burner
is coming into the baking
chamber.
Issued by: PM
SERVICE
INSTRUCTION
603/605
Approved by: TH
Issue date: January 19, 2005
Signed:
Suggested Measures
Take the heat exchanger out of the heating section
(refer to section no. 603-5-003 in this manual).
Check the seals where the front side of the heat
exchanger is connected to the opening in the front of the
heating section and the heat exchanger to chimney for
possible leakage.
Fill the heat exchanger (when cold) with water and
check for leakage.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Heat exchanger
Number: 603-5-003
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
The heat exchanger
needs to be replaced.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: June 09, 1997
Signed:
Suggested Measures
1. Start by removing the burner.
2. Remove the air duct panel covering the heat
exchanger on the left side, inside the baking
chamber.
3. Remove the isolation cover and the insulation on the
left and right side of the burner plate.
4. Remove the burner and pressure plate.
5. Remove the front and inner cover and the screws on
the front of the heat exchanger.
6. Remove the screws of the chimney/heat exchanger
connection.
7. Take the heat exchanger out of the front opening of
the heating section.
IMPORTANT
* Before mounting the new heat exchanger, replace
the seal on the front and chimney connection of the
heat exchanger.
8. Put some silicone glue 50217401on the new seals
and lift the heat exchanger into the heating section.
9. Attach the heat exchanger loosely with the four M6S
10x20 screws to the chimney .
10. Mount the front side of the heat exchanger. Then
lock the chimney connection screws.
11. Remount the inner cover, the safety springs, which
hold the inner cover against the front of the heat
exchanger, must be pressed together until they are
60mm long
12. Remount the front cover and the pressure plate.
13. Seal the gap between the pressure plate and the
end of the combustion chamber of the heat
exchanger with two turns of seal 50115400.
14. Remont the burner plate, the insulation and the
insulation covers.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Sweeping the heat
exchanger
Number: 603-5-004
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
Soot in the heat
exchanger.
Issued by: PM
SERVICE
INSTRUCTION
603/605
Approved by: TH
Issue date: June 09, 1997
Signed:
Suggested Measures
Remove the burner, the burner plate and the inner and
front cover of the heat exchanger.
Sweep the tubes and combustion chamber.
Mount the removed parts again.
If the heat exchanger is heavily polluted with soot,
please contact the burner supplier for a burner service.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Stack fan/draft
induction fan
Number: 603-5-005
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: April 07, 2004
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The stack fan/draft
Induction fan is not
running.
The stack fan/draft
Induction fan stops
running immediately after
the oven is switched off.
The stack fan/draft
Induction fan motor is
broken and needs to be
replaced.
Suggested Measures
1. The motor over load protector (3F) has tripped
and has to be reset (12).
2. Check if the terminals A1-A2 of the motor
contactor are energized, always check against
neutral.
3. Check the motor voltage/Amp. per phase.
When the the motor circuit breaker is tripping
repeatedly the motor voltage/amp. per phase
should be checked.
4. 4TR (stack fan/draft induction fan timer) is
defective and should be replaced.
5. The motor contactor is defective and should be
replaced.
6. The motor is defective and should be replaced.
The stack fan/draft induction fan should continue
running for 15 minutes after the oven has been
switched off. If it does not, check the stack fan timer.
Note:
It is not necessary to remove the complete stack
fan/draft induction fan from the top of the chimney to
replace the motor.
Remove the stack fan/draft induction fan canopy.
Easy access to the motor by loosening the quick locks
and turning the motor bracket on the hinge upside
down.
Take the fan wheel off the motor shaft and replace the
motor. The fan wheel may revolve to the right or to the
left.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Heating elements
Number: 603-5-006
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460 (1978) to present.
Trouble
A heating element needs
to be replaced.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: June 09, 1997
Signed:
Suggested Measures
1. Remove the air duct panel covering the heat
exchanger on the left side, inside the baking section
and the cover for the elements inside the heating
section.
2. Remove the wires and the star connector from the
element.
3. Remove enough insulation around the element to let
the element wrench fit on the nut of the element.
4. Remove the defect element and replace it with a
new.
IMPORTANT
* Be sure that the distance washer on top of the
element is fit over the pin which is welded on the
rear inside panel of the heating section.
5. Reinsert the insulation around the element.
6. Connect the wires and star connector on the new
element.
7. Reinstall the element cover and the air duct.
Special tools
needed
Box spanner
(Part No.
40787500)
pray
Module: 6. STEAM SYSTEM
Description: Cleaning the
steam system
Number: 603-6-001
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
Insufficient or no steam is
generated.
Suggested Measures
1. Check if time is set on sprinkler (spray) timer.
2. Check that all valves and filters are open.
3. The solenoid valve is defective and should be
cleaned or replaced.
4. The water pressure is too low, below 4.5kg/cm²
(64 psi), and a booster pump has to be
installed. For steam results according to
Revent standards, Revent recommends a
constant water pressure of 4.5kg/cm² (64 psi).
This constant water pressure will generate a
large water volume for sufficient steam
capacity. To check the water volume, remove
the solenoid valve by loosening the nut on the
radiator coupling holding the solenoid valve
against the sprinkler tube. Set the steam timer
for 20 seconds and measure the water volume.
The volume should be approx. 11.0l (2,91 US
gls). To reach this volume the water pressure
should be 4.5kg/cm² (64 psi).
5. If the water pressure is O.K., check the
sprinkler tube for lime or other deposits that
may obstruct the holes and reduce the water
flow. The sprinkler tube can be cleaned with a
de-liming agent.
6. Check the steel balls for lime deposits. Too
much lime on the steel balls will have a
negative effect on the steam capacity of the
steam generator. Clean the steel balls with a
de-liming agent.
7. Check the ball beds for lime and rust deposits
from the steel balls. These deposits can
obstruct the flow of water through the holes in
the ball beds having a negative effect on the
steam capacity.
8. Follow procedure below to measure the water
volume:
a) Pull out the water spray tube.
b) Place the spray tube in a hose or tube that has
a larger inner diameter than the outer diameter
of the s
tube. The hose/tube should have
Special tools
needed
Module: 6. STEAM SYSTEM
Description: Cleaning the
steam system
Number: 603-6-001
Page:
2(2)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
the same length as the spray tube.
c) Place the hose/tube and the spray tube in a
bucket and keep it there.
d) Set steam spray time for 20 seconds and press
start on the oven.
e) Measured volume of water should correspond
to item 4 above.
Module: 7. ROTATION
SYSTEM
Description: Motor
Number: 603-7-001
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for 603/ 605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The rack rotation does
not start.
Suggested Measures
1. The oven door is not closed. If oven door is not
closed the green light on the ON button will
start flashing when in the baking mode.
2. The baking cycle has to be started as it
controls the function of the rotation motor.
3. Close the oven door and check if the motor
circuit breaker 2F has tripped.
4. Check that the terminals A1-A2 on the motor
contactor are energized, always check against
neutral.
5. Check the motor voltage/Amp. per phase.
6. The belt drive slips and should be tensioned.
Check the spring of the belt tensioner and that
the spanner wheel is touching the belt.
7. The motor is defective and should be replaced.
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Gearbox
Number: 603-7-002
Page:
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The gearbox is not
working.
The gear box has broken
and needs to be
replaced.
The oil level in the
gearbox needs to be
t
opped off.
Suggested Measures
Check the motor.
Check that the coupling between the gearbox and the
motor is not broken.
If broken, check that the alignment of the gearbox and
the motor is correct.
If the gear box needs to be replaced, be sure that the
red capped transport screw is replaced by the attached
air-release screw. Ensure that the ventilation hole is
open.
Check that the oil in the gear box is topped off.
For topping off, use one of the following lubricants:
Shell Tivela WB
Texaco Synlube SAE 90
BP Energol SGR 150
Mobil Glygoyle 30
Statoil ESL 812
For topping off ovens with Serial numbers 94.2631.058
to 04.xxxx.xxx, use one of the following lubricants:
Shell Tivela WB
Texaco Synlube SAE 90
BP Energol SGR 150
Mobil Glygoyle 30
If other synthetic oils are used the gear box must be
cleaned and flushed before the new oil is filled into the
gear box.
For topping off ovens with Serial numbers 03.xxxx.xxx
o present, use one of the following lubricants: t
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Gearbox
Number: 603-7-002
Page:
2(2)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.
Note: The gear box is filled with polyglycol synthetic oil
and must not be mixed with other non-polyglycol
synthetic oils or mineral oils. One of the following
glycole synthetic oils should be used:
Shell Tivela SD (490 Cst*)
Shell Tivela WB (210 Cst*)
Mobil SHC 634 (380 Cst*)**
Mobil SHC 629 (140 Cst*)
BP SG-XP 460 (490 Cst*)
BP SG-XP 220 (240 Cst*)
* at 40°C/104°F
** recommended by Revent
The maximum allowed temperature in the worm gear is
90°C/194°F.
If other synthetic oils are used the gear box must be
cleaned and flushed before the new oil is filled into the
gear box.
Module: 7. ROTATION
SYSTEM
Description: Chain and chain
adjustment device
Number: 603-7-003
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460(1978) to present.
Trouble
The chain is rolling off the
sprockets.
Issued by: PM
SERVICE
INSTRUCTION
Approved by: TH
603/605
Issue date: June 09, 1997
Signed:
Suggested Measures
Check that the spring in the tensioner has not broken.
Check that the pin of the spring is placed in the correct
hole of the tensioner holder.
Check that the tension in the chain is not too weak.
(When the oven is cold, the chain can be pressed down
for max. one cm)
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Platform
Number: 603-7-005
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460(1978) to present.
Trouble
The platform is not in
level with the door ramp.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Suggested Measures
The platform can be adjusted either upwards or
downwards with the two adjusting screws in the centre
of the platform.
If the platform is above the ramp and cannot be
adjusted by turning the adjusting screws upwards,
check that the bearing cup is not jammed in the bearing
cup adaptor of the platform.
1. Loose the supporting tubes on the underside from
the platform. Lift the two platform halves out of the
baking section. Loose the column from the top bar
and lean the top of the column against a side wall of
the baking chamber. The bearing body and bearing
cup are now accessible.
2. Check that the bearing cup and the bearing body are
moving easily inside the adaptor of the column. A
jammed cup and/or bearing body can be knocked
out with a suitable mandrel through the adjusting
screw holes of the bearing cup=s receiv
3. Check why the bearing cup/bearing body was
jammed and adjust. Remount the upper bearing cup,
the bearing body and the lower bearing cup in the
adaptor of the column, be sure that the holes in the
upper bearing cup correspond to screw holes in the
adaptor. The square on the underside of the lower
bearing cup must fall into the guide on the floor of
the baking section when the column has been
moved into the correct position. Check that the holes
in the upper bearing cup still correspond to the screw
holes and remount the adjusting screws.
4. Remount the column against the top bar and check
that it moves easily, lift the two platform halves into
position, remount the supports and adjust the
platform with the screws.
If the platform is below the ramp and the adjusting
screws are not long enough to adjust the platform to the
level of the ramp, the bearing body should be checked.
Follow the same procedure as above.
er.
Special tools
needed
8mm (5/16”)
Mandrel
Module: 7. ROTATION
SYSTEM
Description: Platform
Number: 603-7-005
Page:
2(2)
This instruction is for 603 ovens with serial numbers from 85.05014 to present.
This instruction is for 605 ovens with serial numbers from 5460(1978) to present.
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Trouble
Fumes are leaking
between the door ramp
and the floor of the
baking section.
The breaker boss is not
operating the limit switch
any longer.
The platform is not
stopping in the correct
position in front of the
oven door.
This instruction is for 603 oven with serial numbers from 96.0342.482 to present.
This instruction is for 605 oven with serial numbers from 96.0542.050 to present.
Trouble
Fumes are leaking
between the door ramp
and the floor of the
baking section.
The breaker boss is not
operating the limit switch
any longer.
The platform is not
stopping in the correct
position in front of the
oven door.
Measure
Remove the door ramp from the oven floor and turn it
upside down to check the seal for leakage. If the seal
has to be replaced, use the same seal material (part no.
50110700) and clips (50114900) as for the door seal.
If the breaker boss is below the limit switch, check the
height of the bearing body. The platform is probably
also under the level of the door ramp.
Check that the platform-stop limit switch on top of the
oven is not loose. If O.K., open the door, place the
platform by hand in the correct position and adjust by
knocking the breaker boss, with a hammer, a little to the
right or left until it stops the platform in the correct
position.
Measure
Remove the door ramp from the oven floor and turn it
upside down to check the seal for leakage. If the seal
has to be replaced, use the same seal material (part no.
50201001) and glue (50217401) as for the door seal.
If the breaker boss is below the limit switch, check the
height of the bearing body. The platform is probably also
under the level of the door ramp.
Check that the platform-stop limit switch on top of the
oven is not loose. If O.K., open the door, place the
platform by hand in the correct position and adjust by
knocking the breaker boss, with a hammer, a little to the
right or left until it stops the platform in the correct
position.
Special tools
needed
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Limit switch 2 LS
Number: 603-7-006
Page:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
1(1)
SERVICE
Issued by: PM
INSTRUCTION
603
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Trouble
The rotation of the racklift
does not stop.
The racklift does not stop
in the right position.
Suggested Measures
The limit switch for the rotation is not working properly
and should be adjusted or replaced.
1. Check the voltage on the terminals P6/28 and
P6/29. The correct values are;
• 0 volts, if the rotation of the racklift has stopped
in correct position and the switch is activated.
• 12 volts if not activated.
2. If O.K., the position of the limit switch 2LS must
be adjusted.
The breaker boss (part no. 40915490) has to be
adjusted against the limit switch 2LS.
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Temperature
Sensor (PT 100)
Number: 603-8-001
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 94.0332.275 to present.
This instruction is for 605 ovens with serial numbers from 92.0542.014 to present.
Trouble
The sensor needs to be
replaced
Issued by: PM
SERVICE
INSTRUCTION
Approved by: TH
603/605
Issue date: Jan 19, 2005
Signed:
Suggested Measures
If the temperature sensor needs to be replaced be
sure that the distance from the under side of the
sensor spring to the roof is 95 mm (3,74”) and that the
locking sleeve is tight. This distance is given by
leaning the silicone hose mounted on the sensor to the
locking nut.
IMPORTANT
Always check against the drawing no. 700720 which is
attached to every spare sensor.
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Lighting
Number: 603-8-002
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: April 08, 2004
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The oven light does not
come on.
Suggested Measures
1. The circuit breaker has tripped and should be
reset.
2. The fluorescent tube is defective, and should
be replaced.
3. The starter of the fluorescent tube is defective
and should be replaced. It is located in the
door.
4. The ballast of the fluorescent tube is defective,
replace it.
5. Check the lamp holders. If they are damaged,
replace them.
6. There are models of the 603/605 which are
equipped with lamp bulbs.
Note: lamps should be suitable for
300°C/595°F
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 603-8-003
Page:
1(1)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
The display
shows:
EEE with a digit
between 1 and
14.
The display
shows three
dashes.
Suggested Measures
One of the push buttons has jammed or is faulty. The digit
below ERROR 4 indicates which push button is affected.
To locate the push button, count the push buttons, from top left
to right and downwards. There are a total of 14 and the
number code designates each push button.
If the indicated button is off centre within the panel
hole, adjust the computer control unit.
If the button itself is faulty, the computer has to be replaced.
Buttons from left to right and from top to bottom:
1: Temperature arrow down
2: Temperature arrow up
3: Time arrow down
4: Time arrow up
5: Damper time arrow down
6: Damper time arrow up
7: Spray time arrow down
8: Spray time arrow up
9: Dwell time arrow down
10: Dwell time arrow up
11: Extra steam
12: Jog rack
13: Stop
14: Start
First check the temperature sensor PT 100 (part no.
50213611). Do this by disconnecting the temperature sensor
PT 100 from input P5.
Check the temperature sensor PT 100 with an ohmmeter. The
resistance should be as shown in Table 1 and the
measurements should be measured :
Between terminal 34 & 33 = see table 1
Between terminal 34 & 32 = see table 1
Between 36 & 32, 33, 34 Open
If the probe check is O.K., replace the digital control panel.
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Ohmmeter
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 603-8-003
Page:
2(2)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Suggested Measures
NOTE: Even if the electrical resistance (ohm) is correct at
20°C, it is still possible that the sensor is defect on
temperatures above 100 degrees centigrade.
For replacing the sensor, please refer to instructions in this
manual, section no. 626-8-001sensors PT 100"
The display
shows 000
A digit is missing
on the display.
The control panel
fascia
is damaged.
The digital control
unit has to be
replaced.
A short circuit has taken place. Check the voltage on the
relay terminals.
The display unit consists of 15 individual displays. Each
display can be replaced if defective. Check the position of the
single dot on the display. Be sure that the display is placed in
the correct position and that the pins of the display are put into
the receiver holes without being damaged.
Unplug all the external connections of the control unit. Take
off the cover and remove the digital control unit.
Rip the fascia off the control panel surface, using a scrapper to
remove any remaining fascia material.
Clean the panel surface with a cleaning agent and attach the
new fascia in the correct position on the control panel surface.
Remount the digital control unit.
Check that the buttons and the display of the control unit are
centred in the middle of the control panel holes.
Remove the defective control unit as described above.
Place the dip switches of the new unit in the same position as
was on the defective unit and mount the new unit.
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Time is shown in
tenths of minutes
Or time is shown
in whole minutes
The factory setting is always for full minutes. However, this can
be changed to tenths of minutes by pressing some buttons in
sequential order.
During start up when CCC or FFF is shown in the upper left
display, press arrow “up” then arrow “down” in sequential order
to show full minutes (a “1” is shown in the display). If you wish
to show tenths of minutes, press the arrows “down” then “up”
in sequential order (a “10” is now shown in the display).
p
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 603-8-003
Page:
3(3)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Automatic Steam
s
etting memory
Automatic
Temperature
setting memory
Automatic
damper setting
memory
Suggested Measures
The ovens delivered with the digital panel from the factory are
always set for automatic steam setting memory. This means
the steam settings will automatically revert to the settings of
the previous bake. To see that this setting is valid the panel
will show “A” in the display above the up arrow in the steam
setting display. To change this to manual, press the steam
setting arrows (first “up” then “down”) during the start up period
(approx. 6 seconds) when CCC or FFF is shown in the upper
left display. If you have been successful in programming
manual function, there will be a “-“ in the display above the up
arrow.
The ovens delivered with the digital panel from the factory are
always set for automatic temperature setting memory. This
means the temperature setting will automatically revert to the
setting of the previous bake. To see that this setting is valid the
panel will show “A” in the display above the down arrow in the
steam setting display. To change this to manual, press the
steam setting arrows (first “up” then “down”) during the start up
period (approx. 6 seconds) when CCC or FFF is shown in the
upper left display. If you have been successful in programming
manual function, there will be a “-“ in the display above the
down arrow.
The oven can be equipped with an automatic damper as an
option.
Description of functions for ovens equipped with an automatic
damper:
• One automatic damper setting can be set per bake.
• Time period is 0-99 min. Setting can only be set for
• The set time for the damper setting counts down from
The ovens delivered with automatic dam
Issued by: PM
SERVICE
INSTRUCTION
603
Approved by: TH
Issue date: Jan 20, 2005
Signed:
whole minutes.
the end of the bake time. For example, if the damper
time is set for 2min, this means that the damper will
open 2 min before the end of the bake.
er are always set for
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 603-8-003
Page:
4(4)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Table 1
Suggested Measures
automatic damper setting memory. This means the damper
setting will automatically revert to the setting of the previous
bake. To see that this setting is valid, the panel will show “A” in
the display above the up arrow in the damper setting display.
To change this to manual, press the damper setting arrows
(first “up” then “down”) during the start up period (approx. 6
seconds) when CCC or FFF is shown in the upper left display.
If the programming of the manual function has been
successful, there will be a “-“ in the display above the down
arrow.
°C °F Resistance
20 68 ~ 107
50 122 ~ 119
100 212 ~ 138
150 302 ~ 157
200 392 ~ 176
250 482 ~ 194
300 572 ~ 212
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Computer panel
POC
Number: 603-8-004
Page:
1(2)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The display shows:
ERROR 1, or
ERROR 2, or
ERROR 3.
The display shows:
ERROR 4 with a digit
between 1 and 16 below
the error code.
Suggested Measures
System failure. The computer cannot be repaired at site
and needs to be replaced.
One of the push buttons has jammed or is faulty. The
digit
under ERROR 4 indicates which push button is affected.
To locate the push button, count the push buttons, from
top left to right and downwards. There are a total of 16
and the number code designates each push button.
If the indicated button is off centre within the panel
hole, adjust the computer control unit.
If the button itself is faulty, the computer has to be
replaced.
Buttons from left to right and from top to bottom:
1: Clock
2: List
3: Sun
4: Timer/thermometer
5: Nozzle
6: Damper
7: Enter
8: ESC
9: Trash can
10: Arrow down
11: Arrow up
12: Stop
13: Stand by
14: Start
15: Fan symbol
16: Jog rack
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Computer panel
POC
Number: 603-8-004
Page:
2(2)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
The computer has lost
its memory.
Check the backup rechargeable battery on the computer.
If a faulty battery has to be replaced, please disconnect
the green wire bridge, before replacing the battery.
If the battery is not faulty, the computer has to be
replaced.
Module: 8. ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Auto damper motor
Number: 603-8-006
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: April 08, 2004
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The damper motor is not
working.
Suggested Measures
1. Check if the damper mechanism has jammed.
2. Check the casting on the shaft of the damper
motor.
3. Check the motor of the damper device.
Special tools
needed
Module: 9. GENERAL
Description: Oven does not
start
Number: 603-9-001
Page:
1(1)
This instruction is for 603 ovens with serial numbers from 95.0332.103 to present.
This instruction is for 605 ovens with serial numbers from 96.0532.021 to present.
Trouble
The oven does not start
(and oven light is not
turned on).
The oven does not start
but the oven light is
turned on.
Issued by: PM
SERVICE
INSTRUCTION
603/605
Approved by: TH
Issue date: June 10, 1997
Signed:
Suggested Measures
1. Check the main fuses on the incoming voltage.
2. Check that the control switch 9SW is in position 1.
If it is not, set the control switch 1SW in “off”
position. Turn the handle of the main switch in
position 0 and thereafter into position 1. If the main
switch trips, check for :
a) Under voltage.
b) That the short-circuit current is above the set
value.
c) That the thermal current is above the set value.
d) If the emergency stop is activated.
e) If the automatic fuse 7F for the emergency circuit
has tripped.
f) If the temperature limit control thermostat has
tripped.
Note:
On electric ovens, the temperature limit thermostat has
to be reset before the main switch can be put into
position 1.
If the main switch is O.K., check the automatic fuse 5F.
If O.K., check if terminals 35-36 are energized.
Special tools
needed
Module: 9. GENERAL
Description: Water on the oven
floor
Number: 603-9-002
Page:
1(1)
SERVICE
INSTRUCTION
603/605
Issued by: PM
Approved by: TH
Issue date: April 16, 2004
Signed:
This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
Water on the oven floor. 1. Check if the flow of water through the drain tube of
Suggested Measures
the waste water tank is obstructed. If the outlet
water pipe glogged, it has to be cleaned.
2. Check if the holes of the sprinkler tube are placed
in the correct position. The water must flow
sideways out of the sprinkler tube
3. Check that the cover over the sprinkler tube is in
the correct position.
4. Check if the solenoid valve is leaking. If the
solenoid valve is leaking it should be cleaned or
replaced.
Special tools
needed
Module: 9. GENERAL
Description: Ventilation system
Number: 603-9-003
Page:
This instruction is for ovens with serial numbers from 92.2631.001 to present.
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: January 19, 2005.
Signed:
Trouble
Connection of the
extractor fan.
Connection of the air
inlet.
Suggested Measures
The extractor fan in the canopy on the front of the oven
may be connected to the ventilation of the premises.
Required evacuation volume from oven 603
4000 m³/h (2354 cfm).
The air inlet of the oven should
ventilation system.
UnotU be connected to any
Special
tools
needed
Module: 9. GENERAL
Description: Barometric damper
Number: 603-9-004
Page:
This instruction is for ovens with serial numbers from 92.2631.001 to present.
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Januay 19, 2005
Signed:
Trouble
Incorrect negative
pressure in heat
exchanger
Suggested Measures
1. Clean the blade and the arm of the barometric
damper.
2. Check that the counter weights on the barometric
damper are still in place.
3. Re-adjust the barometric damper to correct
setting. Negative pressure to be checked at
inspection hole on burner mounting plate.
Special
tools
needed
Module: 9. GENERAL
Description: Grease filters
Number: 603-9-005
Page:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
1(1)
SERVICE
INSTRUCTION
603
Issued by: PM
Approved by: TH
Issue date: Nov 18, 2004
Signed:
Trouble
Cleaning of grease filters
Suggested Measures
1. Filters should be cleaned periodically depending
on usage of oven. Recommended interval is once
a month.
2. Cleaning of filters is done in a dish washing
machine.
Special
tools
needed
Module: 1. OVEN BODY
Description: Sheet metal panels
Number: 620-1-001
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
An exterior wall panel
is damaged
Suggested Measures
Remove the self-tapping screws along the underside of
the damaged panel(s) and on the roof strip(s) above the
damaged panel(s). The roof strips, are attached to the
upper frames with rivet, part no. 50622701.
When changing the panel(s), be sure that the insulation
material is not rubbed out of position.
The upper part of the panel should only be kept in
position against the frame by the roof strip.
WARNING: To avoid buckling of panel, do not attach
the upper lip of the panel to the frame (with screws
or rivets).
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Dec.19, 1996
Signed:
Special tools
needed
Drilling
machine.
4.8 (3/16”)
mm drill-bit
8 mm (5/16”)
wrench
rivet pliers
Module: 1. OVEN BODY
Description: Gaskets
Number: 620-1-002
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
Fume leakage from the
joints between the
heating and baking
sections and/or front and
rear baking section.
Suggested Measures
If fume leakage is confirmed (it may be difficult to find
the exact location) between the heating and baking
sections
and/or the front and rear baking section, the leak should
be sealed with Revent silicone glue, part no. 50217401
(#50222801 US ovens).
In case of leakage where no leak can be located, the
oven must be divided and the joints cleaned from the
attached sealing material for resealing.
New sealing material must be applied as described in
the chapter "Assembling instructions"
WARNING: Fume leakage for an extended period of
time, will start the rust process between the outer and
inner oven body.
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600
Module: 2. DOOR ASSEMBLY
Description: Door locking
Number: 620-2-001
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle side of
the door is not closing
tight against the door
seal.
Suggested Measures
1) The ball bearing, part no. 50197601 on the locking
bracket, has to be readjusted.
2) The locking lid in the latch assy, part no. 41276190
is worn out. The latch assy has to be replaced. If the
latch assy has to be replaced, the door handle must
first be removed. The square steel may be difficult
to remove from the latch assy. In that case the
square steel should be cut from the inside of the
latch assy.
If the latch assy has to be replaced, it is advisable to
be equipped with a spare square steel (part no.
50108002) and pin (part no. 50108003).
Apply some graphite grease on the square steel
before remounting the door handle.
Special tools
needed
Universal
saw with a
"stiletto" saw
blade.
Mandrel 4
mm (0,16”)
Module: 2 DOOR ASSEMBLY
Description: Door glass
Number: 620-2-002
Page: 1(1)
This instruction is for ovens with serial numbers from 96.2432.431 to present.
Trouble
The door glass is broken. Remove the door from the oven to be able to effectively
Suggested Measures
replace the broken glass. Set the door face up so that it
rests in a level (horizontal) position.
Remove the lamp cover, the fluorescent lamp, the lamp
holders on the right and the cover on the left side of the
window.
Remove the upper and lower cover strips. These strips
are glued and riveted against the door frame and they
will probably be damaged during the disassembly
caused by the glue.
Clean the door glass bracket from glue and glass
pieces.
Apply silicone glue, part no. 50217401, on the bracket
and replace the new glass. Remount the cover strips,
part no. 40899601. Use silicone glue, part
no.50217401, and rivets, part no. 50622701.
It is advisable to use new cover strips part no.
40899601.
Carefully remove the silicone glue surplus on the glass
as long as it is soft.
IMPORTANT:
Confirm that the glass is installed correctly (not back to
front or upside down). Do this by reading the warning
sign written on the glass.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: May 18, 2005
Signed:
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600.
Module: 2. DOOR ASSEMBLY
Description: Door handle
Number: 620-2-003
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle will not
stay in horizontal position
when the door is opened.
The door handle is
wobbling in the door
handle frame.
The door handle comes
loose from the door
handle frame.
Suggested Measures
The door handle assy, part no. 31169690, or possibly
the bushing, part no. 50108004, inside the door handle
frame needs to be replaced.
The pin, part no. 50108003, placed through the square
steel which holds the door handle against the frame
needs to be replaced.
If the door handle is difficult to remove from the latch
assy, please refer to instructions in this manual, section
no. 620-2-001, A door locking@.
Special tools
needed
Mandrel 4
mm (0,16”)
Mandrel 4
mm (0,16”)
Module: 2 DOOR ASSEMBLY
Description: Door hinge
Number: 620-2-004
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The door hinge side of
the door is not closing
tight against the door
seal.
Suggested Measures
The hinge bushings, part no. 50196001, in the hinge
upper and lower frame part should be replaced.
Proceed as follows, same procedure to replace both
upper and lower bushings:
• Let oven door stay in locked position
• Dismount ceiling in canopy
• Dismount cover plate on RH side of door
• Loosen the screws holding the lower part of
hinge to the oven body
• Pull down hinge part
• Press out old bushing
• Press in a new bushing
• Remount removed parts
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Module: 2. DOOR ASSEMBLY
Description: Door seal
Number: 620-2-005
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
Fumes are leaking from
between the door and
door frame.
Fumes are leaking from
the bottom of the door.
Suggested Measures
The door seal, 5 m (16,4’) of part no. 50201001, has
worn out and needs to be replaced.
The surface where the gasket is to be mounted has to
be cleaned with detergentto remove old glue and
gasket.
The seal, part no. 30801801, on the under side of the
door has to be adjusted or, if worn out, replaced.
Special tools
needed
Silicone glue,
part no.
50217401
(#50222801
US ovens).
Gun, part no.
50159600.
Module: 3 FAN SYSTEM
Description: Fan shaft bushing
Number: 620-3-001
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Steam is leaking from the
oven chamber, through
the fan device unit.
Noise is coming from the
fan device unit.
Suggested Measures
Remove the air duct panel on the left side in the baking
section covering the heat exchanger.
Make a mark of how the fan inlet cone is placed before
removing it. This is to be sure to replace it in the correct
position.
Take the fan wheel off the fan shaft.
Replace the bushing seal, part no. 50210501, and
spring, part no. 50227101, if necessary.
Reinstall the fan wheel and air duct panel .
Check the above bushing and spring.
Refer also to section no. 620-3-002 in this manual.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Pulley drag
(mechanical
push-puller)
Module: 3 FAN SYSTEM
Description: Bearings
Number: 620-3-002
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Noise is coming from the
fan device unit.
Suggested Measures
Check lower motor bearing.
For dismantling the fan assy, please refer to section
620-3-001 Afan device bushing@ in this manual.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Pulley drag
(mechanical
push-pulley)
Module: 3 FAN SYSTEM
Description: Fan motor
Number: 620-3-003
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The oven fan does not
start.
Noise is coming from the
front of the motor
Suggested Measures
1. Check the voltage on terminals P6/31 and P6/30. It
should read 0 volt if the oven door is closed and the
limit switch is activated. It should read 12 volt if the
door is open or the limit switch is not activated.
2. Check if the motor circuit breaker 1F has tripped.
3. Check if the terminals A1-A2 on the motor contactor
are energized. Always check against neutral.
4. Check the motor Voltage/Amp. per phase. With
repeated tripping of the motor circuit breaker the
motor voltage/amp. per phase should be checked.
Remove the motor canopy and check if the motor
cooling
disc is lose from the shaft (look for cracks) or is broken.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 3 FAN SYSTEM
Description: Fan Wheel
Number: 620-3-004
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Vibrations in the fan
wheel device.
Suggested Measures
Check for damage and/or if the fan wheel is out of
balance. Replace fan wheel if needed.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
Special tools
needed
Pulley drag
(mechanical
push-pulley)
Module: 4 AIR DISTRIBUTION
Description: Adjusting the air
distribution panel
Number: 620-4-001
Page: 1(3)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Uneven baking
Suggested Measures
HEAT BALANCING
Before re-adjusting the heat distribution, check that the
original setting is correct. Refer to the Abaking setting
report@ located in the instruction handbook delivered
with the oven.
Also before adjusting, check that the rack configuration
is correct. There should be a minimum distance of 190
mm from the floor to the bottom of the first tray. There
should also be a minimum clearance distance between
the top of the finished baked product on each tray and
the tray which is placed directly above. Refer to the
Revent dealers guide, section 4 for more information
about rack configuration requirements.
NOTE: It is better to decrease than increase the hole
diameters of the air distribution wall
See procedures on following pages
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30,1997
Signed:
Special tools
needed
Measuring
gauge
Module: 4 AIR DISTRIBUTION
Description: Adjusting the air
panels
Number: 620-4-001
Page: 2 (3)
Uneven baking
adjustment procedures
Procedure:
Issued by: PM
SERVICE
INSTRUCTION
620
Approved by: TH
Issue date: Jan.30, 1997
Signed:
1) Start by baking a complete rack load of the same
shaped bread.
2) Record the baking results on the rack diagram of
the test report form under the heading " Before
adjusting". Start with the bottom tray of the rack
and work upwards. If two trays are baked side by
side, it is treated as though it were one large tray.
a) If the baking results are perfect, record this by
marking a "0" in the middle of the line which
corresponds to the respective tray.
b) If the baked goods on the tray are too light in
the centre of the tray, record this by marking "" in the middle of the line. If it is too light on an
edge of a tray, mark a "-" on the applicable
side of the line corresponding to the respective
tray. If the baking results are very light, mark"-
-".
c) If the baked goods on the tray are too dark,
record this by marking a "+" in the same
manner as above.
d) The markings as described in points b and c
can be combined.
MARKINGS: 0 = perfect bake
- = baked goods are too light
-- = baked goods are very light
+ = baked goods are too dark
++ = baked goods are very dark
Module: 4 AIR DISTRIBUTION
Description: Adjusting the air
panels
Number: 620-4-001
Page: 3 (3)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed
3) Always make the first adjustment an increase or decrease of 1 mm.
This way it is then possible to go back half way if necessary.
A suitable measuring gauge is a drill-bit shaft.
If the bread is too light, the heat transfer should be increased. This
is achieved by increasing the openings of the air distribution panel.
If the bread is too dark, the heat transfer should be decreased. This
is achieved by decreasing the size of the openings.
a) Look at the results of your test report to see which tray(s)
needs adjusting. Determine if the change is needed in the
centre or on a tray edge.
b) Measure the height from the floor to the lower edge of this
particular tray in the rack.
c) Mark off this height on the air distribution panel.
d) Increase or decrease the opening on the panel plate which lies
just under the mark on the wall (due to upward air flow).
The air flow from the right and left row of the air distribution wall should
be directed to the centre of the
baking chamber at an angle of 70°.
Note! Before adjusting, measure the existing opening and make a note
of it. The air direction from the air distribution wall is directed upwards.
Because of this, the adjustment must be on a lower level than the
marked tray. The air generally blows upward at an angle of 70°.
e) Register the new values in the test report.
Special training in baking adjustments is available at the Revent
factory. Contact the marketing and sales department to organise a
training session if desired.
pp
Module: 5. HEATING SYSTEM
Description: Burner
Number: 620-5-001
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
B urner maintenance.
The burner does not
start.
Suggested Measures
WARNING!
1. Only allow a REVENT AUTHORIZED
SERVICE COMPANY to adjust the burner.
Special instruments and training are
required.
2. Any modifications to the burner will void
arranty and will invalidate Safety Agency
w
Certification.
3. Damage to ignition control could result in
fatal accidents. Do not attempt to repair or
disassemble the ignition control. Ignition
control that has been w
4. Calling for burner service and maintenance
of safety
responsibility of the owner/operator.
5. It is required that the burner is checked
once a y
manufacturer.
6. For maintenance and service of the burner
follow
manual.
devices in this oven is the sole
ear by a representative of the
the instructions in the burner
1. Check that the oven main switch is on.
2. On electric heated ovens, the circuit breaker
fuse for the instrument control panel should be
checked.
3. Check that the oven door is closed. If it is not,
the green light at the right side of the start
button should be blinking.
4. Check if red light between set point and actual
temperature is lit.
5. The temperature limit control has tripped and
should be reset.
6. The burner has tripped and should be reset.
The procedure for resetting the burner varies
depending on manufacturer, follow instructions
in the burner manual.
7. The control fuse or the circuit breaker of the
burner has tri
ed and should be reset. If the
et must be replaced.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Burner
Number: 620-5-001
Page:
2(2)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
circuit breaker trips repeatedly, call for service.
8. The motor overload protector for the circulation
fan has tripped and should be reset (14). If it
trips repeatedly, call for service.
9. The motor overload protector for the stack
fan/draft induction fan has tripped and should
be reset (12). If it trips repeatedly, call for
ice.
serv
10. 4TR (stack fan/draft induction fan timer) is
defective and should be replaced.
1. Is the burner energized?
IF YES,
- Contact your burner service.
IF NO,
- check that the stack fan is energized.
2. Is the stack fan/draft induction fan
energized?
IF NO,
- check the stack fan/draft induction fan
circuit.
IF YES,
- check that the main fan is energized
3. Is the main fan energized?
IF NO,
- check the main fan circuit.
IF YES,
- check that the temperature limit switch
is not cut off. If the temperature limit
switch is O.K., check the therm
function on the digital control unit.
ostat
LWARNING7
For problems related directly to the function of the
burner, refer to the burner manual and/or contact an
authorized burner technician.
Module: 5. HEATING SYSTEM
Description: Burner
Number: 620-5-001
Page:
3(3)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
The stack fan/draft
induction fan does not
start (oil and gas ovens
only).
The temperature in the
oven does not rise (oil
and gas ovens only).
The burner is damaged
by back-flowing hot air
after the oven is switched
off.
1. The motor over load protector has tripped and
has to be reset (12). If the switch trips
repeatedly, call service. If the motor over load
protector has tripped, the burner also stops.
2. 4TR (stack fan/draft induction fan timer) is
defective and should be replaced.
3. The motor contactor is defective and should be
replaced.
4. The motor is defective and should be replaced.
1. Check if red light between set point and actual
temperature is lighted. If it is lighted, call for
ice.
serv
2. The temperature limit control has tripped and
should be reset.
3. The burner has tripped and should be reset.
The procedure for resetting the burner varies
depending on manufacturer, follow instructions
in the burner manual.
4. The control fuse or the circuit breaker of the
burner has tripped and should be reset. If the
circuit breaker trips repeatedly, call for service.
5. The motor overload protector for the circulation
fan has tripped and should be reset (14). If it
trips repeatedly, call for service.
6. The motor overload protector for the stack
fan/draft induction fan has tripped and should
be reset (12). If it trips repeatedly, call for
ice.
serv
7. The burner capacity is too low. An authorized
service engineer should adjust and clean the
burner.
The draft in the chimney is not sufficient. A stack
fan/draft induction fan should be installed. The fan
must run for 15 min. after the oven is switched off.
Module: 5 HEATING SYSTEM
Description: Checking the
heat exchanger
Number: 620-5-002
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Smoke from the burner
is coming into the baking
chamber.
Suggested Measures
Take the heat exchanger out of the heating section
(refer to section no. 626-5-003 in this manual).
Check the seals at the connection points for possible
leakage:
1. Where the heat exchanger is connected to the
opening in the front of the heating section.
2. Where the heat exchanger is connected to the
chimney.
Fill the heat exchanger (when cold) with water and
check for leakage.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan. 30, 1997
Signed:
Special tools
needed
Module: 5 HEATING SYSTEM
Description: Heat exchanger
Number: 620-5-003
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The heat exchanger
needs to be replaced.
Suggested Measures
1. Start by removing the burner.
2. Remove the air duct panel covering the heat
exchanger on the left side, inside the baking
chamber.
3. Remove the burner plate and the block of insulation
material behind it.
4. Remove the clamps and al.-glas seal.
5. Remove the front and inner cover and the screws
on the front of the heat exchanger.
6. Remove the screws of the chimney/heat exchanger
connection.
7. Take the heat exchanger out of the front opening of
the heating section.
IMPORTANT
* Before mounting the new heat exchanger, replace
the seals on the front and chimney connection of
the heat exchanger.
8. Attach silicone glue 50217401on the new seals for
the heat exchanger and lift it into the heating
section.
9. Attach the heat exchanger loosely with the four
M6S 10x20 screws to the chimney .
10. Mount the front side of the heat exchanger. Then
lock the chimney connection screws.
11. Reassemble the insulation block and the burner
plate.
12. Reassemble the covers in front of the heat
exchanger.
13. Check that the distance nuts on the burner plate
pins are keeping the correct distances at the end of
the thread.
14. Replace the air duct panel and the burner.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 5 HEATING SECTION
Description: Sweeping the
heat exchanger
Number: 620-5-004
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Soot in the heat
exchanger.
Suggested Measures
Remove the burner, the burner plate and the inner and
front cover of the heat exchanger.
Sweep the pipes and combustion chamber.
Remount the removed parts.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Stack fan/draft
induction fan
Number: 620-5-005
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: April 07, 2004
Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The stack fan/draft
Induction fan is not
running.
The stack fan/draft
Induction fan stops
running immediately after
the oven is switched off.
The stack fan/draft
Induction fan motor is
broken and needs to be
replaced.
Suggested Measures
1. The motor over load protector (3F) has tripped
and has to be reset (12).
2. Check if the terminals A1-A2 of the motor
contactor are energized, always check against
neutral.
3. Check the motor voltage/Amp. per phase.
When the the motor circuit breaker is tripping
repeatedly the motor voltage/amp. per phase
should be checked.
4. 4TR (stack fan/draft induction fan timer) is
defective and should be replaced.
5. The motor contactor is defective and should be
replaced.
6. The motor is defective and should be replaced.
The stack fan/draft induction fan should continue
running for 15 minutes after the oven has been
switched off. If it does not, check the stack fan timer.
Note:
It is not necessary to remove the complete stack
fan/draft induction fan from the top of the chimney to
replace the motor.
Remove the stack fan/draft induction fan canopy.
Easy access to the motor by loosening the quick locks
and turning the motor bracket on the hinge upside
down.
Take the fan wheel off the motor shaft and replace the
motor. The fan wheel may revolve to the right or to the
left.
Special tools
needed
Module: 5. HEATING SYSTEM
Description: Heating elements
Number: 620-5-006
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The temperature in the
oven does not rise
(electrical ovens only).
An heating element
needs to be replaced.
Suggested Measures
1. Check if red light between set point and actual
temperature is lighted. If it is lighted, call for
ice.
serv
2. The motor overload protector for the circulation
fan has tripped and should be reset. If this
switch trips repeatedly, call for service.
3. The temperature limit control has tripped and
should be reset.
4. The heat contactor is defective and should be
replaced.
5. One or many electric heaters are out of order
and should be replaced.
1. Remove the air duct panel covering the heating
elements on the left side of the oven chamber.
2. Remove the wires and the star/delta connector
from the element.
3. Remove enough insulation around the element to
let the element wrench fit on the nut of the
element.
4. Remove the defect element and replace it with a
new.
IMPORTANT
* Be sure that the distance washer on top of the
element is fit over the pin which is welded on the
rear inside panel of the heating section.
5. Replace insulation around the element.
6. Connect the wires and star/delta connector on the
new element.
7. Replace the element cover and the air duct.
Special tools
needed
Multimeter
VAC
Box spanner
(Part No.
40787500)
Module: 6. STEAM SYSTEM
Description: Cleaning the
steam system
Number: 620-6-001
Page:
This instruction is for ovens with serial numbers from 92.2631.001 to present.
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
Trouble
Insufficient or no steam is
generated.
Suggested Measures
1. Check if time is set on sprinkler (spray) timer.
2. Check that all valves and filters are open.
3. The solenoid valve is defective and should be
cleaned or replaced.
4. The water pressure is too low, below 4.5kg/cm²
(64 psi), and a booster pump has to be
installed. For steam results according to
Revent standards, Revent recommends a
constant water pressure of 4.5kg/cm² (64 psi).
This constant water pressure will generate a
large water volume for sufficient steam
capacity. To check the water volume, remove
the solenoid valve by loosening the nut on the
radiator coupling holding the solenoid valve
against the sprinkler tube. Set the steam timer
for 20 seconds and measure the water volume.
The volume should be approx. 7.0l (1,85 US
gls). To reach this volume the water pressure
should be 4.5kg/cm² (64 psi).
5. If the water pressure is O.K., check the
sprinkler tube for lime or other deposits that
may obstruct the holes and reduce the water
flow. The sprinkler tube can be cleaned with a
de-liming agent.
6. Check the steel balls for lime deposits. Too
much lime on the steel balls will have a
negative effect on the steam capacity of the
steam generator. Clean the steel balls with a
de-liming agent.
7. Check the ball beds for lime and rust deposits
from the steel balls. These deposits can
obstruct the flow of water through the holes in
the ball beds having a negative effect on the
steam capacity.
8. Follow procedure below to measure the water
volume:
a) Pull out the water spray tube.
b) Place the spray tube in a hose or tube that has
a larger inner diameter than the outer diameter
of the spray tube. The hose/tube should have
the same length as the spray tube.
Special tools
needed
Module: 6. STEAM SYSTEM
Description: Cleaning the
steam system
Number: 620-6-001
Page:
This instruction is for ovens with serial numbers from 92.2631.001 to present.
2(2)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
c) Place the hose/tube and the spray tube in a
bucket and keep it there.
d) Set steam spray time for 20 seconds and press
start on the oven.
e) Measured volume of water should correspond
to table above.
Module: 6 STEAM SYSTEM
Description: Water drain
placement
Number: 620-6-002
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Changing the oven drain
from the front to the rear .
Suggested Measures
The 620 oven is delivered standard with the drain tube
welded to the front side of the drain bowl.
The drain bowl is also made for connection to a drain on
the back side of the oven. To enable drainage to the rear,
part no. 40946601 drain tube and 50188502 seal cap are
necessary.
1. Remove the plastic cover on the back side of the
heating section and cut out the insulation.
Remember to save the insulation as you will need it
later.
2. Remove the plug on the rear side of the drain bowl
and mount the drain tube 40946601.
3. Reinsert the insulation around the drain tube.
4. Mount the seal cap 50188502 on the drain tube on the
front side of the drain bowl.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: March 13, 1997
Signed:
Special tools
needed
Module: 7 ROTATION
SYSTEM
Description: Motor
Number: 620-7-001
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The rack rotation does
not start.
Suggested Measures
1. The oven door is not closed. If the oven door is
not closed the green light on the ON button will
start flashing when in baking mode.
2. The baking cycle has to be started because it
controls the function of the rotation motor.
3. Close the oven door and check if the motor
circuit breaker 2F has tripped.
4. Check that the terminals A1-A2 on the motor
contactor are energized, always check against
neutral.
5. Check the motor voltage/Amp. per phase.
6. The belt drive slides and should be tensioned.
Check the spring of the belt tensioner and that
the spanner wheel is touching the belt.
7. The motor is defective and should be replaced.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan. 19, 2005
Signed:
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Gearbox
Number: 620-7-002
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.
Trouble
The gearbox is not
working.
The gearbox has broken
and needs to be
replaced.
The oil level in the
gearbox needs to be
t
opped off.
Suggested Measures
Check the motor.
Check that the coupling between the gearbox and the
motor is not broken.
If broken, check that the alignment of the gearbox and
the motor is correct.
If the gear box needs to be replaced, be sure that the
red capped transport screw is replaced by the attached
air-release screw. Ensure that the ventilation hole is
open.
Check that the oil in the gear box is topped off.
For topping off, use one of the following lubricants:
Shell Tivela WB
Texaco Synlube SAE 90
BP Energol SGR 150
Mobil Glygoyle 30
Statoil ESL 812
For topping off ovens with Serial numbers 94.2631.058
to 04.xxxx.xxx, use one of the following lubricants:
Shell Tivela WB
Texaco Synlube SAE 90
BP Energol SGR 150
Mobil Glygoyle 30
If other synthetic oils are used the gear box must be
cleaned and flushed before the new oil is filled into the
gear box.
For topping off ovens with Serial numbers 03.xxxx.xxx
o present, use one of the following lubricants: t
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Gearbox
Number: 620-7-002
Page:
2(2)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.
Note: The gearbox is filled with polyglycol synthetic oil
and must not be mixed with other non-polyglycol
synthetic oils or mineral oils. One of the following
glycole synthetic oils should be used:
Shell Tivela SD (490 Cst*)
Shell Tivela WB (210 Cst*)
Mobil SHC 634 (380 Cst*)**
Mobil SHC 629 (140 Cst*)
BP SG-XP 460 (490 Cst*)
BP SG-XP 220 (240 Cst*)
* at 40°C/104°F
** recommended by Revent
The maximum allowed temperature in the worm gear is
90°C/194°F.
If other synthetic oils are used the gearbox must be
cleaned and flushed before the new oil is filled into the
gear box.
Module: 7. ROTATION
SYSTEM
Description: V-belt, V-belt
tensioner
Number: 620-7-003
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The V-belt slips on the Vbelt pulley.
Suggested Measures
Check that the V-belt is still in good shape and is not
dried out and with cracks.
Change V-belt if necessary. A98, L=2500 mm
Check that the spring in the tensioner has not broken.
Check that the pin of the spring is placed in the correct
hole of the tensioner holder.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 7. ROTATION
SYSTEM
Description: Overhead rack lift
Number: 620-7-004
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The rack is
wobbling on the
rack lift.
Suggested Measures
1. Checking the rack lift bushings:
Remove the V-belt and (from inside the baking chamber) move
the rack lift from side to side. If you can feel more than 2 mm
play between the bushings in the rack lift tube and the rack lift
shaft, the bushings are probably worn out and need to be
replaced.
2. Replacing the bushings:
1) Remove the following parts, on top of the oven, from the
rack lift shaft: The V-belt, the V-belt pulley, the spacing
sleeve, the thrust bearing and the lift centre support.
2) Place a rack under the lifting device and take the circlip off
the shaft.
3) Remove the rack and take the lifting device down.
4) Remove the circlips from each end of the rack lift tube.
There are two bushings on each end of the tube. The
bushings are resting against on a bearing collar inside the
tube. Therefore, the lower bushings are to be removed
downwards and the upper bushings upwards.
5) To facilitate the removing of the bushings, a hole should
be drilled along the left and right side of the bushings.
The diameter of the drill bit should be as close to the
remaining thickness of the bushing side as possible.
6) The remains of the bushings can easily be broken into
pieces and removed.
7) To replace the bushings, start by knocking in the two
bushings on the upper side of the rack lift tube. Put some
oil on them first. Use a mandrel for knocking the bushings
into place. Do the same on the underside of the tube.
8) Check that the alignment of the bushings is correct. The
shaft should move easily, without resistance.
9) Replace the circlips above the bushings.
10) Place the shaft of the lifting device into the tube. Hold it in
place with the help of a rack and lock it with the circlip.
11) Reassemble the rest of the lifting parts.
Special
tools
needed
Module: 7. ROTATION
SYSTEM
Description: Overhead rack lift
Number: 620-7-004
Page:
2(2)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
The rack is moving from
the centre position
during the bake.
The rack is not coming
down after the door is
opened.
Check that the hooks on the rack supports are correctly
adjusted. The space between the hooks and the
underside of the lifting bar of the rack should be
approx. 5 mm when the oven is at room temperature.
Check that the blade springs on the centering device
are not broken and can move easily along the guiding
rivets.
Check that the alignment of the bushings is correct.
2
Module: 7 ROTATION
SYSTEM
Description: Platform
Number: 620-7-005
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The platform is not in
level with the door
ramp.
Fumes are leaking
between the door ramp
and the floor of the
baking section.
The breaker boss is not
operating the limit
switch any longer.
The platform is not
stopping in the correct
position in front of the
oven door.
Suggested Measures
The platform can be adjusted either upwards or downwards
with the three adjusting screws in the centre of the platform.
If the platform is above the ramp and cannot be adjusted by
turning the adjusting screws upwards, check that the
bearing cup is not jammed in the bearing cup adaptor of the
platform.
1. Loosen the supporting tubes on the underside from the
platform. Move the platform out of the baking section
and turn it upside down. The bearing body and bearing
cup are now accessible.
2. Check that the bearing cup is moving easily inside the
adaptor. A jammed cup can be knocked out with a
suitable mandrel through the adjusting screw holes of
the platform.
3. Check why the bearing cup was jammed and adjust.
Place the bearing body in the guide on the floor of the
baking section. Place the bearing cup over the body
and replace the platform on top of it.
4. Check that it moves easily. Remount the platform
supports and adjust the platform with the screws.
If the platform is below the ramp and the adjusting screws
are not long enough to adjust the platform to the level of the
ramp, the bearing body should be checked.
Follow the same procedure as above.
Remove the door ramp from the oven floor and turn it
upside down to check the seal for leakage. If the seal has to
be replaced, use the same seal material (part no.
50201001) and glue (50217401) as for the door seal.
If the breaker boss is below the limit switch, check the
height of the bearing body. The platform is probably also
under the level of the door ramp.
Check that the platform-stop limit switch on top of the oven
is not loose. If O.K., open the door, place the platform by
hand in the correct position and adjust by knocking the
breaker boss, with a hammer, a little to the right or left until
it stops the platform in the correct position.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special
tools
needed
Module: 7. ROTATION
SYSTEM
Description: Limit switch 2 LS
Number: 620-7-006
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The rotation of the rack
lift does not stop.
The rack lift does not stop
in the right position.
Suggested Measures
The limit switch for the rotation is not working properly
and should be adjusted or replaced.
1. Check the voltage on the terminals P6/28 and
P6/29. The correct values are;
• 0 volts, if the rotation of the rack lift has
stopped in correct position and the switch is
activated.
• 12 volts if not activated.
2. If O.K., the position of the limit switch 2LS must
be adjusted.
The breaker boss (part no. 40915490) has to be
adjusted against the limit switch 2LS.
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL
Description: Temperature
Sensor (PT 100)
Number: 620-8-001
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The sensor needs to be
replaced
Suggested Measures
If the temperature sensor needs to be replaced be
sure that the distance from the under side of the
sensor spring to the roof is 95 mm (3,74”) and that the
locking sleeve is tight. This distance is given by
leaning the silicone hose mounted on the sensor to the
locking nut.
IMPORTANT
Always check against the drawing no. 700720 which is
attached to every spare sensor.
Special tools
needed
Module: 8. ELECTRICAL
SYSTEM & CONTROL
Description: Lighting
Number: 620-8-002
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
No lighting in the baking
chamber.
Suggested Measures
1. The circuit breaker has tripped and should be
reset.
2. The fluorescent tube is defective, and should
be replaced.
3. The starter of the fluorescent tube is defective
and should be replaced. It is located in the
door/heat section wall.
4. The ballast to the fluorescent tube is defective,
replace it.
5. Check the lamp holders. If they are damaged,
replace them.
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 620-8-003
Page:
1(1)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
The display
shows:
EEE with a digit
between 1 and
14.
The display
shows three
dashes.
Suggested Measures
One of the push buttons has jammed or is faulty. The digit
below ERROR 4 indicates which push button is affected.
To locate the push button, count the push buttons, from top left
to right and downwards. There are a total of 14 and the
number code designates each push button.
If the indicated button is off centre within the panel
hole, adjust the computer control unit.
If the button itself is faulty, the computer has to be replaced.
Buttons from left to right and from top to bottom:
1: Temperature arrow down
2: Temperature arrow up
3: Time arrow down
4: Time arrow up
5: Damper time arrow down
6: Damper time arrow up
7: Spray time arrow down
8: Spray time arrow up
9: Dwell time arrow down
10: Dwell time arrow up
11: Extra steam
12: Jog rack
13: Stop
14: Start
First check the temperature sensor PT 100 (part no.
50213611). Do this by disconnecting the temperature sensor
PT 100 from input P5.
Check the temperature sensor PT 100 with an ohmmeter. The
resistance should be as shown in Table 1 and the
measurements should be measured :
Between terminal 34 & 33 = see table 1
Between terminal 34 & 32 = see table 1
Between 36 & 32, 33, 34 Open
If the probe check is O.K., replace the digital control panel.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Ohmmeter
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 620-8-003
Page:
2(2)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Suggested Measures
NOTE: Even if the electrical resistance (ohm) is correct at
20°C, it is still possible that the sensor is defect on
temperatures above 100 degrees centigrade.
For replacing the sensor, please refer to instructions in this
manual, section no. 626-8-001sensors PT 100"
The display
shows 000
A digit is missing
on the display.
The control panel
fascia
is damaged.
The digital control
unit has to be
replaced.
A short circuit has taken place. Check the voltage on the
relay terminals.
The display unit consists of 15 individual displays. Each
display can be replaced if defective. Check the position of the
single dot on the display. Be sure that the display is placed in
the correct position and that the pins of the display are put into
the receiver holes without being damaged.
Unplug all the external connections of the control unit. Take
off the cover and remove the digital control unit.
Rip the fascia off the control panel surface, using a scrapper to
remove any remaining fascia material.
Clean the panel surface with a cleaning agent and attach the
new fascia in the correct position on the control panel surface.
Remount the digital control unit.
Check that the buttons and the display of the control unit are
centred in the middle of the control panel holes.
Remove the defective control unit as described above.
Place the dip switches of the new unit in the same position as
was on the defective unit and mount the new unit.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Time is shown in
tenths of minutes
Or time is shown
in whole minutes
The factory setting is always for full minutes. However, this can
be changed to tenths of minutes by pressing some buttons in
sequential order.
During start up when CCC or FFF is shown in the upper left
display, press arrow “up” then arrow “down” in sequential order
to show full minutes (a “1” is shown in the display). If you wish
to show tenths of minutes, press the arrows “down” then “up”
in sequential order (a “10” is now shown in the display).
p
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 620-8-003
Page:
3(3)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Automatic Steam
s
etting memory
Automatic
Temperature
setting memory
Automatic
damper setting
memory
Suggested Measures
The ovens delivered with the digital panel from the factory are
always set for automatic steam setting memory. This means
the steam settings will automatically revert to the settings of
the previous bake. To see that this setting is valid the panel
will show “A” in the display above the up arrow in the steam
setting display. To change this to manual, press the steam
setting arrows (first “up” then “down”) during the start up period
(approx. 6 seconds) when CCC or FFF is shown in the upper
left display. If you have been successful in programming
manual function, there will be a “-“ in the display above the up
arrow.
The ovens delivered with the digital panel from the factory are
always set for automatic temperature setting memory. This
means the temperature setting will automatically revert to the
setting of the previous bake. To see that this setting is valid the
panel will show “A” in the display above the down arrow in the
steam setting display. To change this to manual, press the
steam setting arrows (first “up” then “down”) during the start up
period (approx. 6 seconds) when CCC or FFF is shown in the
upper left display. If you have been successful in programming
manual function, there will be a “-“ in the display above the
down arrow.
The oven can be equipped with an automatic damper as an
option.
Description of functions for ovens equipped with an automatic
damper:
• One automatic damper setting can be set per bake.
• Time period is 0-99 min. Setting can only be set for
• The set time for the damper setting counts down from
The ovens delivered with automatic dam
Issued by: PM
SERVICE
INSTRUCTION
620
Approved by: TH
Issue date: Jan 20, 2005
Signed:
whole minutes.
the end of the bake time. For example, if the damper
time is set for 2min, this means that the damper will
open 2 min before the end of the bake.
er are always set for
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL
PANELS
Description: DIGITAL PANEL
Number: 620-8-003
Page:
4(4)
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present
Trouble
Table 1
Suggested Measures
automatic damper setting memory. This means the damper
setting will automatically revert to the setting of the previous
bake. To see that this setting is valid, the panel will show “A” in
the display above the up arrow in the damper setting display.
To change this to manual, press the damper setting arrows
(first “up” then “down”) during the start up period (approx. 6
seconds) when CCC or FFF is shown in the upper left display.
If the programming of the manual function has been
successful, there will be a “-“ in the display above the down
arrow.
°C °F Resistance
20 68 ~ 107
50 122 ~ 119
100 212 ~ 138
150 302 ~ 157
200 392 ~ 176
250 482 ~ 194
300 572 ~ 212
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL PANEL
Description: COMPUTER
PANEL POC
Number: 620-8-004
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The display shows:
ERROR 1, or
ERROR 2, or
ERROR 3.
The display shows:
ERROR 4 with a digit
between 1 and 16 below
the error code.
The computer has lost
Suggested Measures
System failure. The computer cannot be repaired at site
and needs to be replaced.
One of the push buttons has jammed or is faulty. The
digit
under ERROR 4 indicates which push button is affected.
To locate the push button, count the push buttons, from
top left to right and downwards. There are a total of 16
and the number code designates each push button.
If the indicated button is off centre within the panel
hole, adjust the computer control unit.
If the button itself is faulty, the computer has to be
replaced.
Buttons from left to right and from top to bottom:
1: Clock
2: List
3: Sun
4: Timer/thermometer
5: Nozzle
6: Damper
7: Enter
8: ESC
9: Trash can
10: Arrow down
11: Arrow up
12: Stop
13: Stand by
14: Start
15: Fan symbol
16: Jog rack
Check the backup rechargable battery on the computer.
If a faulty battery has to be replaced, please disconnect
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
Special tools
needed
its memory. the green wire bridge, before replacing the battery.
If the battery is not faulty, the computer has to be
replaced.
Module: 8. ELECTRICAL
SYSTEM & CONTROL
Description: Extractor fan
Number: 620-8-005
Page:
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The extractor fan is not
working.
The extractor fan does
not switch to high speed
when the door is opened
or during the steaming
period.
Suggested Measures
1. Check if the overheating thermostat on the fan has
tripped. The overheating thermostat is located on top
of the fan.
2. Check that the fan contactor and capacitor are
energized.
3. Check the fan motor.
The fan should go into high speed when the solenoid of
the fan contactor is energized.
Check the voltage on the contactor terminals for the
high speed connection.
Special tools
needed
Module: 8 ELECTRICAL
SYSTEM & CONTROL PANEL
Description: Auto damper motor
Number: 620-8-006
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
The damper motor is not
working.
Suggested Measures
1. Check if the damper mechanism has jammed.
2. Check the casting on the shaft of the damper motor.
3. Check the motor of the damper device.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 9. GENERAL
Description: Oven does not
start
Number: 620-9-001
Page:
1(1)
This instruction is for ovens with serial numbers from 92.0332.103 to present.
Trouble
The oven does not start
(and oven light is not
turned on).
The oven does not start
but the oven light is
turned on.
Issued by: PM
SERVICE
INSTRUCTION
620
Approved by: TH
Issue date: June 10, 1997
Signed:
Suggested Measures
1. Check the main fuses on the incoming voltage.
2. Check that the control switch 9SW is in position 1.
If it is not, set the control switch 1SW in “off”
position. Turn the handle of the main switch in
position 0 and thereafter into position 1. If the main
switch trips, check for :
a) Under voltage.
b) That the short-circuit current is above the set
value.
c) That the thermal current is above the set value.
d) If the emergency stop is activated.
e) If the automatic fuse 7F for the emergency circuit
has tripped.
f) If the temperature limit control thermostat has
tripped.
Note:
On electric ovens, the temperature limit thermostat has
to be reset before the main switch can be put into
position 1.
If the main switch is O.K., check the automatic fuse 5F.
If O.K., check if terminals 35-36 are energized.
Special tools
needed
Module: 9 GENERAL
Description: Water on the oven
floor
Number: 620-9-002
Page: 1(1)
This instruction is for ovens with serial numbers from 92.2032.119 to present.
Trouble
Water on the oven floor. 1. Check if the flow of waste water through the drain
Suggested Measures
tube of the waste water tank is obstructed.
2. Check if the holes of the sprinkler tube are placed
in the correct position. The water must flow
sideways out of the sprinkler tube.
3. Check that the cover over the sprinkler tube is in
the correct position.
4. Check if the solenoid valve is leaking.
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan.30, 1997
Signed:
Special tools
needed
Module: 9. GENERAL
Description: Ventilation system
Number: 620-9-003
Page:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
Trouble
Connection of the
extractor fan.
Connection of the air
inlet.
Suggested Measures
The extractor fan in the canopy on the front of the oven
may be connected to the ventilation system of the
premises.
Required evacuation volume from oven 624/724
2500 m³/h (1471 cfm).
The air inlet of the oven should
ventilation system.
UnotU be connected to any
Special
tools
needed
Module: 9. GENERAL
Description: Barometric damper
Number: 620-9-004
Page:
This instruction is for ovens with serial numbers from 92.2631.001 to present.
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: January 19, 2005
Signed:
Trouble
Incorrect negative
pressure in heat
exchanger
Suggested Measures
1. Clean the blade and the arm of the barometric
damper.
2. Check that the counter weights on the barometric
damper are still in place.
3. Re-adjust the barometric damper to correct
setting. Negative pressure to be checked at
inspection hole on burner mounting plate.
Special
tools
needed
Module: 9. GENERAL
Description: Grease filters
Number: 620-9-005
Page:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
1(1)
SERVICE
INSTRUCTION
620
Issued by: PM
Approved by: TH
Issue date: Nov 18, 2004
Signed:
Trouble
Cleaning of grease filters
Suggested Measures
1. Filters should be cleaned periodically depending
on usage of oven. Recommended interval is once
a month.
2. Cleaning of filters is done in a dish washing
machine.
Special
tools
needed
Module: 1. OVEN BODY
Description: Sheet metal panels
Number: 624-1-001
Page: 1(1)
This instruction is for ovens with serial numbers from 96.2432.431 to present.
Trouble
An exterior wall panel
is damaged
Suggested Measures
Remove the rivets along the underside of the damaged
panel(s) and on the roof strip(s) above the damaged
panel(s). The roof strips, are attached to the upper
frames with rivet, part no. 50622701.
When changing the panel(s), be sure that the insulation
material is not rubbed out of position.
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
Special tools
needed
Drilling
machine.
4.8 (3/16”)
mm drill-bit
8 mm (5/16”)
wrench
rivet pliers
Module: 1. OVEN BODY
Description: Gaskets
Number: 624-1-002
Page:
1(1)
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
Fume leakage from the
joints between the
heating and baking
sections and/or front and
rear baking section.
Suggested Measures
If fume leakage is confirmed (it may be difficult to find
the exact location) between the heating and baking
sections
and/or the front and rear baking section, the leak should
be sealed with Revent silicone glue, part no. 50217401
(#50222801 US ovens).
In case of leakage where no leak can be located, the
oven must be divided and the joints cleaned from the
attached sealing material for resealing.
New sealing material must be applied as described in
the chapter "Assembling instructions"
WARNING: Fume leakage for an extended period of
time, will start the rust process between the outer and
inner oven body.
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600
Module: 1. OVEN BODY
Description: Damper
Number: 624-1-003
Page: 1(1)
This instruction is for ovens with serial numbers from YY.XXXX.ZZZ to present.
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
Trouble
The damper washer is
damaged.
Suggested Measures
Access to the damper washer is possible by removing
the air duct panel on left side in the baking chamber
covering the heat exchanger.
The washer, part no. 41067201, is attached to the
damper rod with two M8 nuts.
Special tools
needed
Module: 2. DOOR ASSEMBLY
Description: Door locking
Number: 624-2-001
Page:
1(1)
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Oct 1, 2004
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle side of
the door is not closing
tight against the door
seal.
Suggested Measures
1) The ball bearing, part no. 50197601 on the locking
bracket, has to be readjusted.
2) The locking lid in the latch assy, part no. 41276190
is worn out. The latch assy has to be replaced. If the
latch assy has to be replaced, the door handle must
first be removed. The square steel may be difficult
to remove from the latch assy. In that case the
square steel should be cut from the inside of the
latch assy.
If the latch assy has to be replaced, it is advisable to
be equipped with a spare square steel (part no.
50108002) and pin (part no. 50108003).
Apply some graphite grease on the square steel
before remounting the door handle.
Special tools
needed
Universal
saw with a
"stiletto" saw
blade.
Mandrel 4
mm (0,16”)
Module: 2 DOOR ASSEMBLY
Description: Door glass
Number: 624-2-002
Page: 1(1)
This instruction is for ovens with serial numbers from 96.2432.431 to present.
Trouble
The door glass is broken. Remove the door from the oven to be able to effectively
Suggested Measures
replace the broken glass. Set the door face up so that it
rests in a level (horizontal) position.
Remove the lamp cover, the fluorescent lamp, the lamp
holders on the right and the cover on the left side of the
window.
Remove the upper and lower cover strips. These strips
are glued and riveted against the door frame and they
will probably be damaged during the disassembly
caused by the glue.
Clean the door glass bracket from glue and glass
pieces.
Apply silicone glue, part no. 50217401, on the bracket
and replace the new glass. Remount the cover strips,
part no. 40899601. Use silicone glue, part
no.50217401, and rivets, part no. 50622701.
It is advisable to use new cover strips part no.
40899601.
Carefully remove the silicone glue surplus on the glass
as long as it is soft.
IMPORTANT:
Confirm that the glass is installed correctly (not back to
front or upside down). Do this by reading the warning
sign written on the glass.
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: May 18, 2005
Signed:
Special tools
needed
Gun for
silicone glue
tubes, part
no.
50159600.
Module: 2. DOOR ASSEMBLY
Description: Door handle
Number: 624-2-003
Page:
1(1)
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Jan 19, 2005
Signed:
This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.
Trouble
The door handle will not
stay in horizontal position
when the door is opened.
The door handle is
wobbling in the door
handle frame.
The door handle comes
loose from the door
handle frame.
Suggested Measures
The door handle assy, part no. 31169690, or possibly
the bushing, part no. 50108004, inside the door handle
frame needs to be replaced.
The pin, part no. 50108003, placed through the square
steel which holds the door handle against the frame
needs to be replaced.
If the door handle is difficult to remove from the latch
assy, please refer to instructions in this manual, section
no. 624-2-001, A door locking@.
Special tools
needed
Mandrel 4
mm (0,16”)
Mandrel 4
mm (0,16”)
Module: 2 DOOR ASSEMBLY
Description: Door hinge
Number: 624-2-004
Page: 1(1)
This instruction is for ovens with serial numbers from 96.2432.431 to present.
Trouble
The door hinge side of
the door is not closing
tight against the door
seal.
Suggested Measures
The hinge bushings, part no. 50196001, in the hinge
upper and lower frame part should be replaced.
Proceed as follows, same procedure to replace both
upper and lower bushings:
• Let oven door stay in locked position
• Dismount ceiling in canopy
• Dismount cover plate on RH side of door
• Loosen the screws holding the lower part of
hinge to the oven body
• Pull down hinge part
• Press out old bushing
• Press in a new bushing
• Remount removed parts
SERVICE
INSTRUCTION
624
Issued by: PM
Approved by: TH
Issue date: Jan 20, 2005
Signed:
Special tools
needed
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