Memmert UE 200 User manual

Congratulations on your choice of a MEMMERT Oven!
Manufactured in Germany using the latest production techniques and _ finest
materials available, you now posses a technically superior and fully developed
product. Your oven has already been under extensive testing in our factory.
For correct operation of the equipment it is essential to observe the operating and
maintenance instructions below. This will ensure that your equipment will give
many years’ satisfactory service.
Explanation of signs!
These signs refer to a hazard and indicate:
Note the Operating Instructions!
Generai safety instructions.
The physical and chemical properties of your load (e.g.
inflammation temp. etc.) have strictiy to be observed, as
otherwise considerable damages (load, oven, surroundings
of apparatus) can appear.. __
Please note that the Memmert ovens described here are not
explosion-proof (they do not conform to Occupational
Association Regulation VBG 24). They are therefore
unsuitable for drying, evaporating or burning-in of enamels
or similar substances whose solvent may form an
inflammable mixture together with air. There must be no
possibility for inflammable or explosive gas/air mixtures to
form either inside the cabinet or in the immediate
neighbourhood of the equipment.
Severe dust formation in the interior and/or in the
surroundings of the cabinet may lead to deposits of fine
dust inside the equipment which can result in short-circuits.
Adequate precautions should be taken against excessive
dust formation. | |
Transport: ME
Always usegloves! 0 - |
If the units have to be carried, at least 2 persons are required for
this mode of transport depending on size (Model 200 to 500) or
at least 4 persons (Model 600 and 700).
UE/BE 200 - 800/ULE 400-800

Technicai
data
summary
Ambient
conditions -
Setting tem-
perature range
Working tem-
perature range
Overheat
safety device
MEMMERT appliances Series UE, BE, ULE are electrically heated.
The temperature in the interior is continuously controlled by a
microprocessor-controller with pulse package control. The power
module is separated from the controller electronics by an optocoupler
to ensure safe electrical isolation according to VDE regulations (not
explosion-proof, see "Loading").
The temperature is measured using a PT 100 (4-wires measuring).
The temperature-set-accuracy is 0,1°C for BE types and 1°C for UE
and ULE types.
Ovens Series UE, BE have natural air circulation. Series ULE ovens
have circulation assisted by a fan.
The door is opened by pulling the door knob.
Ambient temperature 5°C - 40 C, rH 80% for temperatures up to 31°C
decreasing linearly to 50% at 40°C. Overvoltage Category:
Contamination degree: 2 according to IEC 664
20°C to nominal temperature (See rating plate)
From 5°C above ambient to nominal temperature = maximum
temperature (see rating plate)
Serial double adjustable overheat control in compliance with DIN
12880 Class 3.1 and additional mechanical temperature limiting device
Class 1.
Class 2 protection (adjustable temperature limiter) available on
reguest.
Electrical
50 or 60 Hz.. Adequate insulated supply which incorporates earth
supply conductor to EN 61010, Protection IP 20, no humidity protection to
ー DIN 40 050. Interference suppression Grade N to VDE 0875.
Before current-connection please compare label on the oven
and instructions of your local current supplier.
model volume | current consum. power voltage weight
UE 200 32 | 4,78 A 1100 W 230 V~ 28 kg
UE 300 39 | 522A | 1200W 230 V- 30.kg
UE/ULE 400 531 o 6,09A 1400 W 230 V~ _ 35 kg
UE/ULE 500 108 | 8,70 A 2000 W 230 V- 50 kg
UE/ULE 600 | 256! 10,43 А 2400 W 230 V~ 87 kg
UE/ULE 700 416 | 5,80 A 4000 W | 400 V 3N- 121 κα --
UE/ULE 800 749 | 6,96 A 4800 W |400V3N-| 164kg |
model volume | current consum. power voltage weight
BE 200 32 | 1,91 А 440 W 230 V~ 28 kg
BE 300 391 2,17 A 500 W 230 V~ 30 kg
BE 400 53 | 3,48 A 800 W 230 V- 35 kg
BE 500 108 | 3,91 A 900 W 230 V- 50 kg
BE 600 256 | 6,96 A 1600 W 230 V~ 87 kg
BE 700 416 | 7,83 À 1800 W 230 V~ 121 kg
BE 800 749 | 8,70 A 2000 W 230 V~ 164 kg
Quality of material
Memmert is using stainless steel (Spec. 1.4301) for the external casing as
well as for the interior, outstanding because of its high stability, optimum
hygienic features and corrosion resistance against many (not all!)
chemical combinations (Attention e.g. at chlorine combinations!).
Class Aim of Scope of Safety Safety
protection protection device measures
Protection No risk liable to ori- TB
1 of the oven ginate from the oven | (temperature limiting device)
in the event of a fault | Special
-TWB safety
No risk originating (adjustable temperaure limiter) | measures re-
2 Protection of | either from the oven | automatically shuts off the quired de-
the oven, the | or its contents in the | oven if the user selected pending on
environment | event of a fault temperature limit is exceeded. | the purpose
and the for which the
contents of | | The contents of the TWW oven is used
3 the oven oven are protected (adjustable overheat
against overheating controller)
takes over control of oven if
temperature is exceeded.
UE/BE 200-800/ULE 400-800
UE/BE 200 - 800/ULE 400-800

Installation
options
Wall
mounting
except
model 800
Stacking
device
exepi
model 800
The units can be set up on the floor or on a table (bench), model
500 - 700 on a subframe (accessory, see Fig. c). Ensure at least
150 mm clearance between back of oven and wall. The distance
between ceiling and oven should not be less than 200 mm. After
the cabinet has been set horizontally the door can be adjusted if
reguired (see MAINTENANCE).
The model 800 is movable. The front castors are lockable by
means of a fixation. In order to grant the stability the front castors
must always be adjusted to the front for locking.
Up to model 700 for all ovens metal mounting brackets (see Fig. a)
are available. Mounting bracket is delivered with incombustible
plate. Dimensions of fixing screws depend on the total weight
(equipment and loading) of the charge and the quality of the wall.
Where the requirement is for two ovens of the same size to be
placed one on top of the other, the oven with the lower working
temperature should be placed at the bottom (Fig. b)
Remove the front feet of the top oven and replace them with the
ones supplied with the stacking device (only if the ovens are not
originally supplied with the stacking device). Remove the top of the
bottom oven and turning it upside down place the drilling jig into
the back corner. Mark out the hole position and drill a 4,2 mm
diameter hole.
With the screws provided fix the centering cylinders into position
and re-fix top cover.
Model 700 can only be stacked with an intermediate frame.
UE/BE 200-800/ULE 400-800
INSTALLATION OPTIONS
Pitches of holes for wall fixation (wall bracket)
Model ¡ A mm inch B mm inch C mm | inch
200 489 19,25 770 130,32
300 569 22,4 770 33.32
400 489 19,25 850 33.47
500 649 25,55 | 930 | 36,61
600 889 35,00 | 1090 | 42,91 540 21,26
700 1129 | 44,45 | 1250 | 49,21 416 16,14 .
fig. :
model 700
model 600
e
nb VA
€
| 4º
β =
il
レン ン
WARNINGI
Before removing top cover -
pull out plug!
Attention!
Take special care when working at high temperature!
Outside case temperature may be hot!
UE/BE 200 - 800/ULE 400-800

PUTTING INTO OPERATION
Attention!
Extremely strong shocks during transport can cause a
displacement of the temperature sensors in the holding clips
inside the working space.
Take care before the first putting into operation that the
temperature sensors are checked on their correct position and if
necessary slided cautiously into the holding clip resp. pulled out
of the holding clip (see Fig. d).
. ceiling of
working space
glass sensor
ceramics sensor
temperature sensor 18/
back panel of
working space
Attention!
When the oven - unload - is started up for the first time it should
be run under supervision until steady conditions are reached.
BE 200-800/ULE 400-800
Temperature setting and overheat safety devices.
6 Y 10 12 9
Units with
adjustable
overheat con-
trolier
TWW
class 3.1
1.
fig. e
Set mains supply switch, rotary switch No. 2 to position |. Green
pilot lamp No. 3 shows: "unit ready for use". After switching on
the former setpoint is indicated for a short while.
The yellow pilot lamp No. 4 indicates: "heating on".
To select the desired temperature with knob 1 it is necessary to
operate key 6.
While the key is depressed the digital temperature indication 7
switches to setpoint selection resp. nominal value indication,
indicated by a blinking point in the display.
The setpoint indicated can only be changed with knob 1 when
key 6 is pressed. If knob 1 is moved quickly, the setpoint is
adjusting in large steps while it changes in single steps upon
slow operation. After releasing of key 6 the setpoint adjusted is
still shown for a short time (blinking point).
Thereafter it switches automatically on the actual value.
The scale can be locked with the screw fa to prevent
unintentional changes.
When key 6 has not been operated the digital display 7 always
indicates the actual temperature inside the chamber. Operating
the key displays the selected temperature setting (blinking
point).
UE/BE 200 - 800/ULE 400-800

Malfunction
Units with
adjustable
overheat
cut-out but
manual
reset TWB
class 2
3. Set the adjustable overheat controller TWW with knob 9 above the
selected working temperature by an appropriate amount (e.g. 5°C).
This scale can also be locked by turning screw 9a. The selected
setpoint of the overheat controller TWW can always be read on the
temperature display 12.
Steady conditions have been reached when the desired tempera-
. ture can be read on the built-in digital temperature display 7 for
several times.
od. in order to provide optimum protection of thermal-sensitive İoads
better against overtemperatures in case of failure of the thermostat
it is advisable to reset the adjustable overheat controller TWW
(rotary button No. 9) - after building-up and steady temperature
conditions have been reached - so far that it is just not operating.
This setpoint-reduction should be effected very slowly step by step
. for one digit (resp. one rest) slightly above the actual steady
temperature (approx. 3°C resp. at incubators approx. 0.5°C).
If the selected operating temperature is exceeded due to a fault in the
temperature control circuit, the temperature control is taken over by the
overtemperature controller as soon as the temperature set with knob 9
and displayed on display 12 has been reached. This is indicated by
flashing of the red signal lamp 5. The unit must be checked
immediately by a qualified electrician.
Putting the oven into operation as well as setting temperatures have to
be done as described under "adjustable overheat controller TWW -
item 1 - 3" |
Malfunction:
lf the adjustable temperature limiter TWB is activated due to a fault, the
TWB switches off the heating on all poles when the temperature set
with knob 9 and indicated on display 12 has been reached. The
adjustable temperature limiter can be reset by switching the knob 2
briefly off and then on again after the temperature has dropped below
the temperature reading of display 12. The unit must be checked
immediately by a qualified electrician.
Temperature This Memmert oven is equipped with an electronic adjustable
limiting
device
mechanical
overheat controller (Class 3.1 in compliance with DIN 12 880). An
adjustable temperature limiter (Class 2 in compliance with DIN
12880) can be specified in place of the electronic adjustable
overheat controller. In addition, either variant is equipped with a
temperature limiting device (Class 1 in compliance with DIN 12880)
which automatically shuts of the oven if it exceeds the maximum
termperature by more than 10°C.
UE/BE 200-800/ULE 400-800
8
Malfunction:
In case the adjustable overheat controller or the adjustable temperature
limiter malfunction, and the oven exceeds its maximum temperature
rating by 10°C, the temperature limiting device will automatically shut off
the heater. In this case the temperature dispiay of the working controller
and the yellow control lights will turn off. The green and red control light,
as well as the display of the overheat controller, will remain on. In ovens
with forced convection, the air turbine will continue to run.
in case of a malfunction - overheat condition- the unit has to be
checked by a qualified service engineer!
If the oven is exposed to freezing temperatures for an extended period,
the temperatur limiting device turns on. In this case, reset the device by
following the procedure for resetting the temperature limiting device,
steps 2-5.
WARNING! =
Before removing top cover -
Procedure
for resetting
the
temperature
limiting
device
Function
control for
the adjustable
overheat
controller
(class 3.1)
and the ad-
justable tem-
perature limi-
ting device
(class 2)
pull out plug
1. Let the oven cool down before attempting to service it.
2. Remove screws along the top edge of the backside of the cover.
3. Slightly raise the top cover of the oven and siowly slide the cover
backwards.
4. Press the red reset button on the temperature limiting device. The
oven will emit an audible click when the temperature limiting device is
reset.
5. Reassemble the oven. Make sure to use washers when fastening the
Screws.
The safety devices (Class 3.1 and Class 2) should be checked on a
daily basis once the oven has stabilized at the desired temperature.
To perform this safety check, begin by loosening screw 9a. Reduce
the setting of the protection device until red control light 5 turns on.
At this point temperature display 12 and temperature display 7
should show the same temperature (+0,5°C for incubators, +1°C for
other ovens).
Now set the protection device as described in the paragraph
“Adjustable overheat controller" - point 3. The red control light
will turn off.
UE/BE 200 - 800/ULE 400-800

Operation
with timer
Operation
with pro-
gramme timer
(special
equipment)
UE/BE 200-800/ULE 400-800
Put main supply switch rotary knob No.2 in position .
Set temperature as described under “Units with adjustable
overheat controller class 3.1; - item 1 - 4º. Set the required time
period with the rotary knob No.10.
Running time 50 Hz = 24 hours.
Running time 60 Hz = 20 hours.
Unit is automatically turned off when the elapsed time has run
down. Timers are available for fitting by the user after delivery and
full instructions are supplied with the timers to be retrofitted.
The installation has to be made by a service engineer.
1.
Adjust programme timer 22 22
(which is not running when
main switch, rotary knob No. 2,
is in O-position) to daytime
(actual time).
fig e-1
Operation time of temperature regulator is adjusted by pro-
gramme timer 22 by pushing single switch buttons (red section
is visibie).
If switch buttons are not pushed (black section is visible) the
temperature regulator is out of service and the heating elements
are cut off.
Set the main switch, rotary knob No. 2, to position ©. The
green pilot lamp No. 3 shows that the oven is ready for
operation. The yellow pilot lamp No. 4 indicates the state of the
heating.
Set temperature as described under "Units with adjustable
overheat controller class 3.1; item 1 - 4".
The heating and cooling times depend on the load inside the
oven and on the ambient temperature and must be taken into
account when setting the timer riders.
The programme runs continually. Switching off by hand with
main switch No. 2 to position 0.
10
An example for a programme timer (24 h) is shown in the illustration below:
red area
fig e-2
Actual time 10.00 o'clock. Heat-
ing/control was operating from 8.00 till
9.30 and then switched off (cooling -
period). At 11.15 heating/control is
switched on again and runs till 13.30.
Afterwards a cooling - period is starting
again.
An example for a 7-day programme timer is shown in the illustration below:
red area
fig e-3
Operation with
programme-
timer with timer
for final
switching off
(special
equipment
from mod. 500)
Actual time: Tuesday 12 o'clock. Hea-
ting/control was operating on Monday
from 8.00 till 16.00. It was automatically
switched off at the end of the switching-
on period. On Tuesday at 3.00 hea-
ting/control was switched on again and
is operating till Wednesday 8.00. After-
wards a inactive period is starting again.
Select the temperature
as described under
"Operation with pro- 22 19
gramme-timer”. |
Timer 19 has to be used
for final switching off the
oven and has to be set
as described under
“Operation with timer”.
The oven switches off
when the set time has
elapsed.
fig. e-4
UE/BE 200 - 800/ULE 400-800
11

Adjustable
The
speed
of
the
air
turbine
can
be
12
air
turbine
continuously
varied
with
rotary
button
{special
No.
12.
equipment)
fig
e-5
Discon-
The
air
turbine
can
be
disconnected
15
nectable
air
by
switch
13.
turbine
(special
equipment)
fig
e-6
Fresh
air
The
amount
of
fresh
air
entry
can
be
adjusted
by
the
slide
control
ventilation
knob
No.
8.
The
flap
is
closed
in
position
0;
there
is
virtually
no
through
ventilation.
By
opening
the
flap
the
air
in
the
working
내
space
can
be
renewed
to
a
limited
extent.
The
maximum
fresh
air
entry
possible
is
obtained
at
position
6
although
this
does
not
signify
a
complete
change
of
air
within
the
chamber.
Intermediate
position
on
the
scale
vary
the
degree
of
ventilation accordingly.
important for loading!
Units
described
in
this
instruction
manual
must
not
be
used
for
drying
or
warming
substances
which
generate
ignitable
vapours when mixed with air.
The
units
described
here
must
never
be
operated
in
areas
with
an
explosive
atmosphere.
UE/BE 200-800/ULE 400-800
| 12
For correct operation and uniform temperature distribution it is essential to
maintain free air circulation throughout the oven. The contents of the oven should
therefore not be packed tightly nor should they be placed directly against any of
the heating ribs either to the sides, top or bottom of the oven. (Note the loading
diagrams on ihe ovens).
When putting the shelves into the apparatus please bear in mind that there is a
little air gap between the rear of the working chamber and the shelf in order to
permit better air circulation.
For the maximum number of shelves possible together with the permissible loads
see schedule.
in certain situations where, for example, the load is packed tightly and the
ventilation slide is fully open it is possible that the unit will control at a temperature
below that set on the thermostat. In order to compensate it may be necessary to
increase the thermostat setting until the desired temperature is shown on the
digital display 7.
The following schedule gives recommended loading levels which will ensure
homogeneous temperature distribution within the working chamber.
Model Max. Load each shelf Total load
number of shelves max. k k
200 3 15 30
300 12 30
400
15
40
500
15
50
600
30 80
700
30
800
30
UE/BE 200 - 800/ULE 400-800
13

MAINTENANCE
General
information
Memmert appliances require minimal servicing. İt is
recommended, that the moving parts on the doors (hinges and
door lock) should be lubricated with a thin silicone grease once a
year (with continuous use 4 times a year).
In case of a malfunction which makes the opening of the unit ©
necessary this work has to be performed by a gualified
service engineer.
A tightly closing door is an essential requirement on ovens. MEMMERT-ovens
ensure perfectly tight closing of the door through a seal on the oven casing. The
door seal presses accurately against the casing seal. in continuous operation the -
flexible seal material may acquire a permanent set. For proper ciosing of the door it
may be necessary to adjust the hinge or the locking plate.
Readjusting the door
After releasing the screw No.12
(ATTENTION! Screw No. 12 is
securéd with glue. Loosen jerky
with inner hexagon key wrench 2
mm) the door can be adjusted by
turning the eccentric 13 in the
direction of the arrow (using a
screwdriver). Tighten screw No.
12 again.
In addition the upper part No.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.
The locking plate can also be
readjusted in the direction of the
arrow after releasing the screw
No.15.
Ensure that the cover is again
screwed down'tightly.
UE/BE 200-800/ULE 400-800
14
fig. g
Cleaning
By regular cleaning of the easy to clean interior, residues
are avoided which at continuous influence can impair the
outfit and function of the oven.
The unit can be cleaned with commercial stainless steel cleaning agent. Please
note that objects liable to rust must not be placed into the interior. Rust sediments
lead to contamination of the interior or external casing.
If rust stains caused by contamination occur on the interior surface, the affected
areas must be cleaned and polished immediately. |
UE/BE 200 - 800/ULE 400-800
15

Check list for rectifying faults - This can only be done by a service engineer.
Fault
Cause
Knob 2 in position |,
green lamp 3 not on
Equipment not connected
Lamp faulty
No temperature indication on the
display
Microfuse defective
T32mA 250 V~on printed wiring board 55121.x
No temperature indication on the
display
Red lamp 5 on
Temperature Limiting Device turned on
Press the red reset button (see procedures for
resetting the temperature limiting device).
Yellow lamp 4 not on
Ambient temperature too high, working tempera-
ture in oven higher than the working temperatu-
re set with knob 1 (set point). Lamp faulty
Display: "E-1" + Circuit element TRIAC defective,
send printed wiring board back to Memmert for
exchange.
Display "E-2" « Possibility 1.
Heating defective, the oven does not heat
anymore
Check current passage at the heating terminals
according to wiring diagram;
Possibility 2
Circuit element TRIAC defective;
Send printed wiring board back to Memmert for
exchange.
Display "E-3" +
PT100 defective
Display "E-4" *
Internal Configuration Error.
Turn off the oven, then turn it back "on".
* In case of a malfunction- Display E1 to E4 - „Please inform the Memmert service
department.
UE/BE 200-800/ULE 400-800
16
The details in these Operation Instructions must be carefully observed in order to
ensure satisfactory operation.
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.
Our Address MEMMERT GmbH + Co.KG
P.0.Box 91107 Schwabach
Federal Republic of Germany
Phone: [phone]*. Tx 624973 mems
Fax [phone]
© by MEMMERT GmbH+Co.KG
ab 06/94
D 06563
UE/BE 200 - 800/ULE 400-800
17