Memmert UE 200 User manual

SERVICEMANUAL
UE/BE 200 - 800
SE 200 - 400
ULE/SLE 400 - 800
UP/BP/ULP/SLP 400 - 800
08 / 98

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 1
Table of contents
1Removing the top cover............................................................................................2
2Changing of “Main switch” module (see chap. 4) ................................................2
3Changing of control panel ........................................................................................3
4Front panel "Main switch" E - class.........................................................................4
5Changing the safety device module TWW / TWB (only E-class) ...........................4
6Changing the temperature sensor PT100 for electronic controller ......................5
7Changing the controller module ..............................................................................6
7.1 Removing the working controller module / Class E...............................................6
7.2 Removing the working controller module Class P.................................................7
7.3 Removing the safety device module / P-Class .......................................................7
8Removing the temperature limiter/ Class P ............................................................8
9Changing the fuse for unit protection .....................................................................8
10 Changing the fan motor............................................................................................9
11 Changing the door lock, door knob and / or door seal ........................................10
11.1 Changing the door lock, door knob and / or door seal on models 200 - 500 .....10
11.2 Changing the door lock, door knob and / or door seal on models 600 - 800 .....11
12 Dismantling the door ..............................................................................................12
12.1 Readjusting the door ..............................................................................................12
13 Changing the seal of the working chamber ..........................................................13
14 Readjusting and dismantling the inner door on incubators BE / BP..................13
15 Dismantling the unit - page 16 ...............................................................................14
16 Changing the heating..............................................................................................14
17 Dismantling the working chamber.........................................................................17
18 Rectifying faults in electronic working controllers ..............................................18
19 Our Address.............................................................................................................19
20 Spare part list ..........................................................................................................20
21 Index.........................................................................................................................21

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
2
Instructions for repair
This Service manual contains instructions for the repair of MEMMERT ovens. For
maintenance work please see the Operation Instructions added to each unit.
We point out that tasks which require disassembly (even in part) of the unit have to
be carried out by experts only.
The dismantling and dismounting of parts is described in this document down to
the module level, because spare parts usually are replaced as complete modules
only.
Please note the safety instructions and general directions of the
Operating Instructions added to the unit.
Separating the unit exposes raw metal edges - therefore
Always use gloves!
Before removing the top cover - pull out the plug!
This Service manual describes the steps for the dismounting of the unit.
Reassembly is done in reverse order, if not stated differently.
1 Removing the top cover
 Pull out the plug.
 Unscrew 4 screws at the back of the
casing cover.
 Slightly lift up the cover and remove it
by pulling it out backwards.
 At reassembly, make sure that lock
washers are placed beneath the
screws.
2 Changing of “Main switch” module (see chap. 4)
 Remove top cover (see chap. 1)
 Disconnect the circuit element cables
(2 ) at the corresponding front panel.
 Release the screw on the hub (9) and
pull out the flexible shaft (10) (only on
class E ovens).
 Unscrew mounting blocks (4).
 Tilt module of main switch slightly
forward and pull it out upwards.

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 3
3 Changing of control panel
 Remove top cover (see chap. 1)
 Disconnect all cables from main switch, temperature controller and safety device unit.
 Open the door.
 On the right upper door hinge unscrew the left one of the two screws (1) approx. 5 mm.
 Slide the control panel to the left and remove it forwards with all control modules (main
switch, temperature controller and safety device).
1

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
4
2
7
6 3
13
1 11
8
14
12
 Instead of marked parts
P-units contain a card
reader for MEMory
Cards
4 Front panel "Main switch" E - class
1
2
3
4
5
Front panel
Cable connectors switch
Cable connectors pilot lamps
Mounting blocks
Switch knob
6
7
8
9
Switch
Pilot lamps
Bearing bracket
Hub 
10
11
12
13
14
Adjusting shaft for ventilation flap 
Flat spring
Adjusting spindle 
Slider 
Lock washer for bearing bracket 
5 Changing the safety device module TWW / TWB (only E-class)
 Remove top cover (see chap. 1).
 Remove rear wall (chap. 15).
 Loosen fixing nut (5) of the
temperature sensor clamp (4) inside
the working chamber and take the
sensor (3) out through the back of the
working chamber and the intermediate
plate (ATTENTION! Do not bend the
capillary tube!).
 Disconnect the wiring to the safety
device module TWW / TWB.
 Unscrew mounting blocks.
 Tilt the safety device module slightly
forward and pull it out upwards.
4 5
4 5 3
9
10

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 5
1
2
3
Safety device
Cable connectors safety device
Temperature sensor
6 Changing the temperature sensor PT100 for electronic controller
 Remove top cover (see chap. 1)
 The temperature sensor can
carefully be moved backwards
out of the clamp with a tool and
can be taken out through the
ceiling and/or the back panel of
the working chamber.
 Pull off the PT100-sensor from
the 4-way terminal strip on the
electronic controller.
 Cut open the cable binder with
side cutters and change the
PT100 sensor.
 The following panels can be
dismantled in indicated manner. Assemble in reverse order.
Warning !! Ensure that the PT100 sensor is fitted properly into the mounting clip!
Glass PT100: the glass body must project completely outside the clip.
Metal PT100 (new): secure the sensor with the enlarged end flush in the clip.
2
1
3

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
6
7 Changing the controller module
 Unlock the electronic controller
modules by pressing the two locking
latches together.
 Tilt controller forward and lift it slightly.
 Pull out complete controller frame to the front.
7.1 Removing the working controller module / Class E
1
2
3
4
5
6
7
8
9
10
11
Working controller
Safety device
Additional power board 
Ribbon cable working controller ↔additional power board
Cable connectors working controller
Cable connectors safety device
Cable connectors additional power board
Mounting blocks
Fixing screws additional power board 
Temperature sensor
Ribbon cable RS232
: only on 3 phases units
or 115 V
 Remove top cover (see chap. 1).
 Disconnect the cable connectors (5) from the
working controller (1) (if necessary mark them)
 Disconnect RS 232 10-way ribbon cable (11) at the working controller
 Disconnect PT100 connecting cable (10) (4-way connector) at the working controller
 Disconnect 14-way ribbon cable (4) to the additional power board (9) at the controller
(if applicable)
 Remove controller module according to chap. 7.
6
2
4
8
1
7
3
9
10
11
5
since 8.11.99 only on ovens with
300°C option

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 7
7.2 Removing the working controller module Class P
1
2
3
4
5
6
7
Working controller
Safety device
Additional power board 
Ribbon cable safety device ↔additional power board 
Ribbon cable working controller ↔safety device
Cable connectors safety device
Cable connectors additional power board 
8
9
10
11
12
Cable connectors working controller
Fixing screws additional power board 
Temperature sensors working controller and safety device
Ribbon cable to serial interface and MEMory reader
Ribbon cable to parallel printer interface
: only on 3-phases units or 115 V
 Remove top cover (see chap. 1).
 Disconnect the cable connectors (8) at the controller (1) (if necessary mark).
 Disconnect ribbon cable (5) between working controller (1) and safety device (2).
 Disconnect RS-232 10-way ribbon cable (11) at the controller (1) (upper multipole
connector)
 Disconnect ribbon cable parallel printer interface (12) at the controller.
 Disconnect 10-way ribbon cable at the card-reader (lower multipole connector)
 Disconnect PT100 connecting cable (10) (4-way connector) at the controller.
 Disconnect 3-way connecting cable to the air flap servo from controller.
 Remove controller according to chap. 7.
7.3 Removing the safety device module / P-Class
 Remove top cover (see chap. 1).
 Disconnect the cable connectors (6) to the safety device (if necessary mark them).
 Disconnect ribbon cable (5) between working controller (1) and safety device (2).
 Disconnect PT100 connecting cable (10) (4-way connector) at the controller.
 Remove controller according to chap. 7.
4
2
5
1
11
9
7
3
6
10
12
8
since 8.11.99 only on ovens with
300°C-option

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
8
8 Removing the temperature limiter / Class P
 Remove top cover (see chap. 1).
 Remove rear wall (chap. 15).
 Push temperature sensor (2) carefully out
of the clip with a tool and pull it up
through the intermediate plate.
 Disconnect all cable connectors (3) at the
temperature limiter (1).
 Loosen screws (4) at the rear post of the
casing cover and lift out temperature
limiter.
9 Changing the fuse for unit protection
 Remove top cover (see chap. 1).
 For changing the quick acting fuse 250V/15A push a flat screwdriver from the side
under the fuse and lift it out of its clamp by twisting the screwdriver.

Push the new fuse from above into the clamp.
4 3
1
5
2

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 9
1 2 3
10 Changing the motor fan
 To change the circulation fan, first
remove the ventilating shaft cover (1)
in the working chamber after releasing
the two screws (2).
 The fan blade (3) can be pulled off
after removing the cap nut (4) (Note!
Left-hand thread).
 During re-assembly it is important to
ensure that the air guide (5) is directed
upwards.
 Remove top cover (see chap. 1).
 Disconnect the earth connections on the
rear wall and pull out the rear wall
upwards.
 Disconnect the earth cable and the
connecting cables on the motor.
 After releasing the hexagon nuts (1) the
motor base plate with the fan motor has to
be removed.
 On the back of the fan motor base plate
the screws (2) can now be unscrewed and
the motor can be pulled out.
During re-assembly it is important to ensure that the spacing discs (3) are again fitted
between motor base plate and the rear wall of the working chamber!
3
4
1
2
5

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
10
11 Changing the door lock, door knob and / or door seal
11.1 Changing the door lock, door knob and / or door seal on models 200 - 500
11.1.1 Door lock
 Unscrew the lock cover (10).
 Pull out the radiation shield (8) with door seal (7).
 The door lock can be dismantled in order of numbers 11 to 14 and 2 to 3 and
assembled in reverse order.
11.1.2 Door knob
 The door knob can be dismantled in order of numbers 2 to 6 and assembled in reverse
order.
11.1.3 Door seal
 Unscrew the lock cover (10).
 Pull out the radiation shield (8) and remove the old seal.
 Place the new silicone door seal (7) on the radiation shield (8).
 Fit in the radiation shield (see sectional drawing A - B) and screw on the lock cover.
1 Door
2 Disc for doorknob
3 Locking ring
4 Door knob
5 Guide screw
6 Sleeve
7 Door seal
8 Radiation shield
9 Fixing screws
10 Lock cover
11 Spring
12 Locking rings
13 Spindles
14 Locking bolt
15 Locking bracket
16 Locking rods
Section A - B

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 11
11.2 Changing the door lock, door knob and / or door seal on models 600 - 800
11.2.1 Door lock
 Unscrew the screws (8) and (9).
 Pull out radiation shield (10) with door seal (7).
 The door lock can be dismantled in order of numbers 11 to 14 and 2 to 3 and
assembled in reverse order.
11.2.2 Door knob (see chap. 11.1.2)
11.2.3 Door seal
 Unscrew screws (8) and (9).
 Pull out radiation shield (10) and remove old seal. (On the left door, remove radiation
shield (10) with centre plate (17) and old seal).
 Cut the ends of the new door seal according to the old one and place it on the radiation
shield.
 Fit in radiation shield (see sectional drawing A - B) and screw it on. (On the left door fit
in radiation shield and centre plate).
1 Door
1.1 Door stiffener
2 Disc for door knob
3 Locking ring
4 Door knob
5 Guide screw
6 Sleeve
7 Door seal
8 Fixing screws
(door stiffener)
9 Fixing screws
(radiation shield)
10 Radiation shield
11 Springs
12 Lock washers
13 Spindles
14 Locking bolt
15 Locking bracket
16 Locking rods
17 Centre plate (left door)
Section A - B
Section A – B
only models 700 a. 800

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
12
12 Dismantling the door
 Unscrew the screws (2).
 Pull out the door (1) horizontally in the direction of the arrow.
 When assembling the door please note:
Lubricate the moving parts of the door hinges with thin silicone grease (see also chap.
"Maintenance" in the Operation Manual).
 Insert cardboard disc between eccentric and door at the lower door hinge.
 When fitting the door it is important to ensure that the setting notch of the eccentric
points towards the front.
 Insert the screws (2) again and tighten them. Note ! It is essential that the long
screw be inserted in the same position (as illustrated)! (See also chap. 3)
12.1 Readjusting the door
After releasing the screw (12)
(ATTENTION! Screw (12) is secured with
glue. Loosen it by a sharp tug with a 2 mm
hexagon socket key) the door can be
adjusted by turning the eccentric (13) in
the direction of the arrow (using a
screwdriver). Tighten screw (12) again.
In addition the upper part (14) of the door
hinge can be moved slightly in the direction
of the arrow after releasing the 2 screws at
the top or bottom of the door.
14
12
13
3
2
1
2
3

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 13
13 Changing the seal of the working chamber
 The seal of the working chamber can be pulled out after opening the door. The new
one can be fitted in according to the illustration.
 The pre-cut seal should be inserted into the space without tension and then cut if
required.
14 Readjusting and dismantling the inner door on incubators BE / BP
 Loosen the screws (3) (do not unscrew them completely, otherwise the fixing block at
the interior side will drop down).
 Adjust the door and tighten the screws (3) again.
 Check screw (4) and tighten it, if necessary.
 Adjust the inner door closure, if required.
If a fixing block has dropped down, it will be accessible by pulling out the side parts
(see chap. 15) and can be mounted in position again.
 For dismantling the glass door unscrew screw (4) (hold the nut at the opposite side with
spanner SW 13), tilt the glass door forward and lift it out of the lower door hinge.
 Assemble in reverse order.
1 Door
2 Inner door
3 Screws for adjustment
4 Fixing screws (glass door)
5 Hinge for inner door (top)
Housing Post
Seal
Working
Chamber
3
4
5 2 1

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
14
15 Dismantling the unit - page 16
 Remove the door (see. chap. 12).
 Remove the inner door on incubators (see chap. 14).
 Remove the top cover (3) (see chap. 1).
 Disconnect the protective ground contacts from the side panels and the rear wall of the
casing cover.
 Pull out upwards the side panels (4) and the rear wall (5).
 Loosen the adjusting shaft (12) for the air outlet (16).
 Disconnect the electrical connections at the heating terminals, main terminal and the
control panel (see also circuit diagram).
 Dismantle temperature sensor according to chap. 5 or chap. 6.
 Disconnect the ends of the heating from the terminals and unscrew terminal carrier on
the working chamber back wall (depending on the model).
 Dismantle intermediate plate (6).
 Remove insulating mats (9 – 11).
 Remove circulation fan (14) according to Chap. 10 (model 800 has 2circulation fans
mounted on the back wall of the working space).
 Unscrew the screws for the air inlet (7) and lift out air inlet downwards.
 Pull out seal for working chamber (see chap. 13).
 Dismantle the working chamber according to chap. 17.
16 Changing the heating
 After releasing the screws (1) pull the
heater ends off the heater terminal and
thread them through the groove sleeves
(2).
 On models 200 – 500 the heating
terminals are in the switch space at the
top.
 On models 600 – 800 the heating
terminals are located on the back left
and right on the back wall of the working
chamber.
 The further procedure follows the details in Chap. 15 „Dismantling the unit“.

After dismantling the working chamber
and before changing the heating, the foil
must be removed from the air inlet shaft.
2
1
Aluminium foil
Air inlet shaft

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 15
The heating panels can then be removed in the order indicated by the numbers, and the
heating can be replaced according to the heating diagram and inserted.
Secure the new heating coil with aluminium
adhesive tape (supplied with the heating
elements). Ensure that the heating elements are
arranged properly.
Re-assembly takes place in the reverse order of
the numbers shown.
The air panel (1) has to be secured on the working
chamber during re-assembly, using aluminium foil, as
follows:
 Apply adhesive with a brush to foil and air panel
and allow the adhesive to dry for about 1 minute.
 Hold a spacing guide (as indicated below) against the back wall of the working
chamber and secure the air panel on the working chamber at spacing „X“. Rub the foil
in position with a cloth.
model X
200 - 500 60 mm
600 - 800 58 mm
4
2
2
4 3
3
3
2
3
2
1

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
16
14 16 12
8
1 Cage
2 Control panel
3 Top cover
4 Side panels
5 Rear wall
6 Intermediate plate
7 Air inlet
8 Air shaft
9 Insulating mat top
10 Insulating mats sides
11 Insulating mat back
12 Adjusting spindle for ventilation flap
13 Heating
14 Circulation fan (only UL ovens)
15 Working chamber
16 Air outlet
17 Heating sheets
3
5
4
6
9
10
17
11 7 10
15
13
2
1

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 17
17 Dismantling the working chamber
The so-called transit fitting must be removed only if the working chamber has to be
dismantled from the housing cage.
 Pull out upwards both side panels (4).
 Unscrew screws (2).
 Remove the transit fitting (1).
 Release the tubing clips by pressing against the inner walls of the working chamber.
 Take the working chamber backwards out of the housing cage.
 When assembling check that the tubing clips are not bent.
top view "x"
1
2
4
Tubing clips
Transit fitting
Fibreglass seal
Seal
top view "x"

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800
18
18 Rectifying faults in electronic working controllers
In case of a fault the electronic controller shows one of the following messages on the
display:
Fault Cause
E-Class P-Class
E-0 Fault on self-test
E-1 ERR-1 Heating output does not switch off e.g. Circuit element TRIAC
defective
E-2 ERR-2 Heating output does not switch on; Power board defective
E-3 ERR-3 PT100 defective; sensor is broken or short-circuit
E-4 ERR-4 Internal Configuration Error
ERR-7
Wrong chip card model (no MEMory Card)
ERR-8
MEMory Card not correct for oven type
ERR-9
MEMory Card inserted incorrectly
The following measures support debugging:
Fault Procedure
E-Class P-Class
E-0 Send controller back to Memmert for replacement
E-1 ERR-1 Send controller back to Memmert for replacement
E-2 ERR-2  Check the equipment fuses and if necessary replace them as
described in Chap. 9
 Check the contactor; in case of 3-phase ovens check also the
electrical supply
 If the fault cannot be rectified, remove the controller (on 3-
phase ovens including the additional power board) and return
to Memmert for replacement.
E-3 ERR-3 Replace the PT100 temperature sensor as described in Chap.6
E-4 ERR-4 Switch the oven off and then on again.
If the fault cannot be rectified, remove the controller and return it to
Memmert for replacement.
ERR-7
Use the original Memory card.
ERR-8
 Insert the MEMory card suitable for oven type (temperature
range !!!)
 Check operation with newly formatted MEMory card
 Replace the chip card reader
ERR-9
Insert MEMory Card in the direction of the arrow.

UE/BE 200-800, SE 200-400, ULE/SLE 400-800
UP/BP/ULP/SLP 400-800 19
The details in this Service Manual must be fully observed in order to ensure
satisfactory operation.
Any warranty and claims for damage are excluded if these instructions are
disregarded.
We reserve the right to make changes in technical specifications.
Dimensions subject to confirmation.
19 Our Address
MEMMERT GmbH + Co.KG
P.O.Box 17 20, 91107 Schwabach
Federal Republic of Germany
+49 9122/925-0
Fax [phone]
Internet: www.memmert.com
Direct dialling the service department:
+49 9122/925 128 / 142
E-Mail: [email protected]
by MEMMERT GmbH+Co.KG
from 08 / 98
D 08364