Revent 724 Service Manual

Module: 1 OVEN BODY			SERVICE		Issued by: PM
Description: Sheet metal panels			INSTRUCTION		Approved by: TH
Number: 603-1-001			603/605		Issue date: June 06, 1997
Page: 1(1)					Signed:
This instruction is for ovens with serial numbers from 94.xxxx.xxx to present
Trouble	Suggested Measures						Special
							tools
							needed
An exterior wall panel is	Remove the self-tapping screws along the underside of						Drilling
damaged.	the damaged panel(s) and on the roof strip(s) above the						machine.
	damaged panel(s). The roof strips are attached to the						4.8
	upper frames with rivet part no. 50622701						(3/16”) mm
	When changing the panel(s), be sure that the insulation						drill-bit
	material is not moved out of position.						8 mm
	The upper part of the panel should be kept in position						(5/16”)
	against the frame only by the roof strip.						wrench
	WARNING: To avoid buckling of panel, do not attach						rivet pliers
	the upper lip of the panel to the frame (with screws or
	rivets)

Module: 1. OVEN BODY	SERVICE		Issued by: PM
Description: Gaskets	INSTRUCTION		Approved by: TH
Number: 603-1-002	603		Issue date: Oct 1, 2004
Page: 1(1)			Signed:

This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.

Trouble	Suggested Measures	Special tools
		needed
Fume leakage from the	If fume leakage is confirmed (it may be difficult to find
joints between the	the exact location) between the heating and baking	Gun for
heating and baking	sections	silicone glue
sections and/or front and	and/or the front and rear baking section, the leak should	tubes, part
rear baking section.	be sealed with Revent silicone glue, part no. 50217401	no.
	(#50222801 US ovens).	50159600
	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.

Module: 2. DOOR ASSEMBLY	SERVICE		Issued by: PM
Description: Door locking	INSTRUCTION		Approved by: TH
Number: 603-2-001	603		Issue date: Oct 1, 2004
Page: 1(1)			Signed:

This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.

Trouble	Suggested Measures	Special tools
		needed
The door handle side of	1) The ball bearing, part no. 50197601 on the locking
the door is not closing	bracket, has to be readjusted.
tight against the door
seal.	2) The locking lid in the latch assy, part no. 41276190	Universal
	is worn out. The latch assy has to be replaced. If the	saw with a
	latch assy has to be replaced, the door handle must	"stiletto" saw
	first be removed. The square steel may be difficult	blade.
	to remove from the latch assy. In that case the	Mandrel 4
	square steel should be cut from the inside of the	mm (0,16”)
	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.

	Module: 2 DOOR ASSEMBLY	SERVICE
	Description: Door glass	INSTRUCTION
	Number: 603-2-002	603
	Page: 1(1)

Issued by: PM

Approved by: TH

Issue date: May 18, 2005 Signed:

This instruction is for ovens with serial numbers from 96.2432.431 to present.

Trouble	Suggested Measures	Special tools
		needed
The door glass is broken.	Remove the door from the oven to be able to effectively	Gun for
	replace the broken glass. Set the door face up so that it	silicone glue
	rests in a level (horizontal) position.	tubes, part
	Remove the lamp cover, the fluorescent lamp, the lamp	no.
		50159600.
	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.

Module: 2. DOOR ASSEMBLY	SERVICE		Issued by: PM
Description: Door handle	INSTRUCTION		Approved by: TH
Number: 603-2-003	603		Issue date: Jan 19, 2005
Page: 1(1)			Signed:

This instruction is for ovens with serial numbers from YY.XXXX.ZZ to present.

	Trouble	Suggested Measures	Special tools
			needed
	The door handle will not	The door handle assy, part no. 31169690, or possibly	Mandrel 4
	stay in horizontal position	the bushing, part no. 50108004, inside the door handle	mm (0,16”)
	when the door is opened.	frame needs to be replaced.
	The door handle is
	wobbling in the door
	handle frame.
	The door handle comes	The pin, part no. 50108003, placed through the square	Mandrel 4
			mm (0,16”)
	loose from the door	steel which holds the door handle against the frame
	handle 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@.

Module: 2. DOOR ASSEMBLY	SERVICE		Issued by: PM
Description: Door hinge	INSTRUCTION		Approved by: TH
Number: 603-2-004	603/605		Issue date: January 19, 2005
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
The door hinge side of	The hinge bushings, part no. 50196001, in the hinge
the door is not closing	upper and lower frame part should be replaced.
tight against the door	Proceed as follows, same procedure to replace both
seal.	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

Module: 2. DOOR ASSEMBLY	SERVICE		Issued by: PM
Description: Door seal	INSTRUCTION		Approved by: TH
Number: 603-2-005	603/605		Issue date: January 19, 2005
Page: 1(1)			Signed:

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.

Trouble	Suggested Measures	Special tools
		needed
Fumes are leaking from	The door seal, 5 m (16,4’) of part no. 50110700, is worn	Silicone glue,
between the door and	out and needs to be replaced.	part no.
door frame.		50217401.
		Gun, part no.
		50159600.

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
		needed
Fumes are leaking from	The door seal, 5 m (16,4’) of part no. 50201001, is worn	Silicone glue,
between the door and	out and needs to be replaced.	part no.
door frame.		50217401.
	The surface where the gasket is to be mounted has to	Gun, part no.
	be cleaned with detergentto remove old glue and gasket.	50159600.
Fumes are leaking from	The seal, part no. 40613102, on the under side of the
the bottom of the door.	door has to be adjusted or, if worn out, replaced.

Module: 3. FAN SYSTEM	SERVICE		Issued by: PM
Description: Fan shaft v-sealing	INSTRUCTION		Approved by: TH
Number: 603-3-001	603/605		Issue date: June 06, 1997
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
Steam is leaking from the	Remove the air duct panel on the left side in the baking	Pulley drag
oven chamber, through	section covering the heat exchanger.	(mechanical
the fan device unit.	Make a mark of how the fan inlet cone is placed before	push-puller)
	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 .
Noise is coming from the	Check the above v-seal.
fan device unit.	Refer also to section no. 605-3-002 in this manual.

Module: 3. FAN SYSTEM	SERVICE		Issued by: PM
Description: Bearings	INSTRUCTION		Approved by: TH
Number: 603-3-002	603/605		Issue date: January 19, 2005
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
Noise is coming from the	Check the roll and ball bearing in the fan shaft assembly	Pulley drag
fan device unit.	For dismantling the fan assy, please refer to section	(mechanical
	605-3-001 A fan device v-sealing in this manual.	push-pulley)
	Check the grease level in the bearing housing.

Module: 3. FAN SYSTEM	SERVICE		Issued by: PM
Description: Fan motor	INSTRUCTION		Approved by: TH
Number: 603-3-003	603/605		Issue date: January 19, 2005
Page: 1(1)			Signed:

This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures		Special tools
			needed
The oven fan does not	1.	The oven door is not closed.
start.	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.
Noise is coming from the	Remove the motor canopy and check if the motor
top of the motor	cooling disc is loose from the shaft (look for cracks) or is
	broken.

Module: 3. FAN SYSTEM	SERVICE		Issued by: PM
Description: Fan Wheel	INSTRUCTION		Approved by: TH
Number: 603-3-004	603/605		Issue date: June 06, 1997
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
Vibrations in the fan	Check for damage and/or if the fan wheel is out of	Pulley drag
wheel device.	balance.	(mechanical
		push-pulley)

Module: 4. AIR DISTRIBUTION

Issued by: PM

	Description: Adjusting the air	SERVICE
		INSTRUCTION	Approved by: TH
	distribution panel
		603/605
	Number: 603-4-001		Issue date: June 09, 1997
	Page: 1(1)		Signed:

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	Suggested Measures	Special tools
		needed
Uneven baking	HEAT BALANCING	Measuring
	Before re-adjusting the heat distribution, check that the	gauge
	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

Module: 4. AIR DISTRIBUTION

Issued by: PM

	Description: Adjusting the air	SERVICE
		INSTRUCTION	Approved by: TH
	distribution panel
		603/605
	Number: 603-4-001		Issue date: June 09, 1997
	Page: 2(2)		Signed:

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	Procedure:
adjustment procedures	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

Issued by: PM

	Description: Adjusting the air	SERVICE
		INSTRUCTION	Approved by: TH
	distribution panel
		603/605
	Number: 603-4-001		Issue date: June 09, 1997
	Page: 3(3)		Signed:

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°.

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.

Module: 5. HEATING SYSTEM	SERVICE		Issued by: PM
Description: Burner	INSTRUCTION		Approved by: TH
Number: 603-5-001	603/605		Issue date: January 19, 2005
Page: 1(1)			Signed:

This instruction is for 605 ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures		Special tools
			needed
Burner maintenance.		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
		warranty and will invalidate Safety Agency
		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 wet must be replaced.
	4.	Calling for burner service and maintenance
		of safety devices in this oven is the sole
		responsibility of the owner/operator.
	5.	It is required that the burner is checked
		once a year by a representative of the
		manufacturer.
	6.	For maintenance and service of the burner
		follow the instructions in the burner
		manual.
The burner does not	1.	Check that the oven main switch is on.
start.	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 tripped and should be reset. If the

Module: 5. HEATING SYSTEM	SERVICE		Issued by: PM
Description: Burner	INSTRUCTION		Approved by: TH
Number: 603-5-001	603/605		Issue date: January 19, 2005
Page: 2(2)			Signed:

This instruction is for 605 ovens with serial numbers from 94.xxxx.xxx 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 service.

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 thermostat 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.

The temperature in the	1.	Check if the red light between the set point and
oven does not rise.		actual temperature is lit. If it is lit, call for service.
(oil and gas ovens only).	2.	The temperature limit control has tripped and

Module: 5. HEATING SYSTEM	SERVICE		Issued by: PM
Description: Burner	INSTRUCTION		Approved by: TH
Number: 603-5-001	603/605		Issue date: January 19, 2005
Page: 3(3)			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	The draft in the chimney is not sufficient. A stack
back-flowing hot air after	fan/draft induction fan should be installed. The fan must
the oven is switched off.	run for 15 min. after the oven is switched off.

Module: 5. HEATING SYSTEM

Issued by: PM

	Description: Checking the heat	SERVICE
		INSTRUCTION	Approved by: TH
	exchanger
		603/605
	Number: 603-5-002		Issue date: January 19, 2005
	Page: 1(1)		Signed:

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	Suggested Measures	Special tools
		needed
Smoke from the burner	Take the heat exchanger out of the heating section
is coming into the baking	(refer to section no. 603-5-003 in this manual).
chamber.	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.

Module: 5. HEATING SYSTEM	SERVICE		Issued by: PM
Description: Heat exchanger	INSTRUCTION		Approved by: TH
Number: 603-5-003	603/605		Issue date: June 09, 1997
Page: 1(1)			Signed:

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	Suggested Measures		Special tools
			needed
The heat exchanger	1.	Start by removing the burner.
needs to be replaced.	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.

Module: 5. HEATING SYSTEM

Issued by: PM

	Description: Sweeping the heat	SERVICE
		INSTRUCTION	Approved by: TH
	exchanger
		603/605
	Number: 603-5-004		Issue date: June 09, 1997
	Page: 1(1)		Signed:

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	Suggested Measures	Special tools
		needed
Soot in the heat	Remove the burner, the burner plate and the inner and
exchanger.	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.

Module: 5. HEATING SYSTEM

Issued by: PM

	Description: Stack fan/draft	SERVICE
		INSTRUCTION	Approved by: TH
	induction fan
		603/605
	Number: 603-5-005		Issue date: April 07, 2004
	Page: 1(1)		Signed:

This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures		Special tools
			needed
The stack fan/draft	1. The motor over load protector (3F) has tripped
Induction fan is not	and has to be reset (12).
running.	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	The stack fan/draft induction fan should continue
Induction fan stops	running for 15 minutes after the oven has been
running immediately after	switched off. If it does not, check the stack fan timer.
the oven is switched off.
The stack fan/draft	Note:
Induction fan motor is	It is not necessary to remove the complete stack
broken and needs to be	fan/draft induction fan from the top of the chimney to
replaced.	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.

Module: 5. HEATING SYSTEM	SERVICE		Issued by: PM
Description: Heating elements	INSTRUCTION		Approved by: TH
Number: 603-5-006	603/605		Issue date: June 09, 1997
Page: 1(1)			Signed:

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	Suggested Measures		Special tools
			needed
A heating element needs	1.	Remove the air duct panel covering the heat	Box spanner
to be replaced.		exchanger on the left side, inside the baking section	(Part No.
		and the cover for the elements inside the heating	40787500)
		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.

Module: 6. STEAM SYSTEM

Issued by: PM

	Description: Cleaning the	SERVICE
		INSTRUCTION	Approved by: TH
	steam system
		603/605
	Number: 603-6-001		Issue date: Jan 19, 2005
	Page: 1(1)		Signed:

This instruction is for 603/605 ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures	Special tools
		needed
Insufficient or no steam is	1. Check if time is set on sprinkler (spray) timer.
generated.	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 spray tube. The hose/tube should have

Module: 6. STEAM SYSTEM

Issued by: PM

	Description: Cleaning the	SERVICE
		INSTRUCTION	Approved by: TH
	steam system
		603/605
	Number: 603-6-001		Issue date: Jan 19, 2005
	Page: 2(2)		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			Issued by: PM
SYSTEM	SERVICE
Description: Motor	INSTRUCTION		Approved by: TH
	603/605
Number: 603-7-001			Issue date: January 19, 2005
Page: 1(1)			Signed:

This instruction is for 603/ 605 ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures		Special tools
			needed
The rack rotation does	1.	The oven door is not closed. If oven door is not
not start.		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.

Module: 7. ROTATION			Issued by: PM
SYSTEM	SERVICE
Description: Gearbox	INSTRUCTION		Approved by: TH
	603
Number: 603-7-002			Issue date: January 19, 2005
Page: 1(1)			Signed:

This instruction is for ovens with serial numbers from 94.xxxx.xxx to present.

Trouble	Suggested Measures	Special tools
		needed
The gearbox is not	Check the motor.
working.	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.
The gear box has broken	If the gear box needs to be replaced, be sure that the
and needs to be	red capped transport screw is replaced by the attached
replaced.	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
The oil level in the	For topping off ovens with Serial numbers 94.2631.058
gearbox needs to be	to 04.xxxx.xxx, use one of the following lubricants:
topped off.	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
	to present, use one of the following lubricants:

Module: 7. ROTATION			Issued by: PM
SYSTEM	SERVICE
Description: Gearbox	INSTRUCTION		Approved by: TH
	603
Number: 603-7-002			Issue date: January 19, 2005
Page: 2(2)			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			Issued by: PM
SYSTEM	SERVICE
Description: Chain and chain
	INSTRUCTION		Approved by: TH
adjustment device
Number: 603-7-003	603/605		Issue date: June 09, 1997
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
The chain is rolling off the	Check that the spring in the tensioner has not broken.
sprockets.	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)

Module: 7. ROTATION			Issued by: PM
SYSTEM	SERVICE
Description: Platform	INSTRUCTION		Approved by: TH
	603/605
Number: 603-7-005			Issue date: January 19, 2005
Page: 1(1)			Signed:

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	Suggested Measures	Special tools
		needed
The platform is not in	The platform can be adjusted either upwards or	8mm (5/16”)
level with the door ramp.	downwards with the two adjusting screws in the centre	Mandrel
	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 receiver.
	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.

Module: 7. ROTATION			Issued by: PM
SYSTEM	SERVICE
Description: Platform	INSTRUCTION		Approved by: TH
	603/605
Number: 603-7-005			Issue date: January 19, 2005
Page: 2(2)			Signed:

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	Measure	Special tools
		needed
Fumes are leaking	Remove the door ramp from the oven floor and turn it
between the door ramp	upside down to check the seal for leakage. If the seal
and the floor of the	has to be replaced, use the same seal material (part no.
baking section.	50110700) and clips (50114900) as for the door seal.
The breaker boss is not	If the breaker boss is below the limit switch, check the
operating the limit switch	height of the bearing body. The platform is probably
any longer.	also under the level of the door ramp.
The platform is not	Check that the platform-stop limit switch on top of the
stopping in the correct	oven is not loose. If O.K., open the door, place the
position in front of the	platform by hand in the correct position and adjust by
oven door.	knocking the breaker boss, with a hammer, a little to the
	right or left until it stops the platform in the correct
	position.

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	Measure	Special tools
		needed
Fumes are leaking	Remove the door ramp from the oven floor and turn it
between the door ramp	upside down to check the seal for leakage. If the seal
and the floor of the	has to be replaced, use the same seal material (part no.
baking section.	50201001) and glue (50217401) as for the door seal.
The breaker boss is not	If the breaker boss is below the limit switch, check the
operating the limit switch	height of the bearing body. The platform is probably also
any longer.	under the level of the door ramp.
The platform is not	Check that the platform-stop limit switch on top of the
stopping in the correct	oven is not loose. If O.K., open the door, place the
position in front of the	platform by hand in the correct position and adjust by
oven door.	knocking the breaker boss, with a hammer, a little to the
	right or left until it stops the platform in the correct
	position.