Memmert HPP User manual

www.memmert.com | www.atmosafe.net
CONSTANT CLIMATE CHAMBER HPP
COOLED INCUBATOR IPPplus
100% ATMOSAFE. MADE IN GERMANY.
OPERATING
INSTRUCTIONS
HPP
IPP

Manufacturer and customer service
MEMMERT GmbH + Co. KG
Postfach 17 20
91107 Schwabach, Germany
Äußere Rittersbacherstr. 38
91126 Schwabach
Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.memmert.com
Customer service:
Service hotline: [phone]
Service fax: [phone]
E-mail: [email protected]
When contacting customer service, always quote the product serial number on the nameplate
(see page 13).
Shipping address for repairs:
Memmert GmbH + Co. KG
Kundenservice
Willi-Memmert-Str. 90-96
DE-91186 Büchenbach
Germany
Please contact our customer service before sending appliances for repair or before returning
equipment, otherwise, we have to refuse acceptance of the shipment.
© 2012 MEMMERT GmbH + Co. KG
Date 09/2012
We reserve the right to make changes

3
About this manual
About this manual
Purpose and target group
This manual describes the assembly, function, transport and operation of constant climate
chambers HPP and cooled incubators IPPPLUS. It is intended for use by trained personnel of the
owner, who have the task of operating and/or maintaining the respective appliance.
If you are asked to work on the appliance, read this manual carefully before starting.
Familiarise yourself with the safety regulations. Only perform work that is described in this
manual. If there is something you do not understand, or certain information is missing, ask
your superior or contact the manufacturer. Do not do anything without authorisation.
Versions
The appliances are available in different configurations and sizes. If specific equipment
features or functions are available only for certain configurations, this is indicated at the
relevant points in this manual.
Due to individual configurations and sizes, illustrations in this manual may be slightly different
from the actual appearance. Function and operation are identical.
Other documents that have to be observed:
►For operation of the appliance with MEMMERT AtmoCONTROL, observe the separate
software manual
►for service and repair work (see page 56) – a separate service manual
Storage and forwarding
This instruction manual belongs with the appliance and should always be stored where
persons working on the appliance have access to it. It is the responsibility of the owner to
ensure that persons who are working or will work on the appliance are informed as to the
whereabouts of this instruction manual. We recommend that it is always stored in a protected
location close to the appliance. Make sure that the instruction manual is not damaged by heat
or humidity. If the appliance is sold on or transported and then set up again at a different
location, the operating instructions must go with it.

4
Contents
1. Safety regulations 6
1.1 Terms and signs used........................................................................................................... 6
1.1.1 Terms used .................................................................................................................... 6
1.1.2 Signs used...................................................................................................................... 6
1.2 Product safety and dangers ................................................................................................ 7
1.3 Requirements of the operating personnel.......................................................................... 7
1.4 Responsibility of the owner................................................................................................. 7
1.5 Intended use........................................................................................................................ 8
1.6 Changes and alterations...................................................................................................... 8
1.7 Behaviour in case of malfunctions and irregularities.......................................................... 8
1.8 Switching off the appliance in an emergency .................................................................... 8
2. Construction and description 9
2.1 Construction........................................................................................................................ 9
2.2 Description......................................................................................................................... 10
2.3 Working range of constant climate chambers HPP ..........................................................10
2.4 Material.............................................................................................................................. 11
2.5 Electrical equipment..........................................................................................................11
2.6 Connections and interfaces............................................................................................... 11
2.6.1 Electrical connection.................................................................................................... 11
2.6.2 Communication interfaces .......................................................................................... 12
2.7 Designation (nameplate)................................................................................................... 13
2.8 Technical data ....................................................................................................................14
2.9 Ambient conditions........................................................................................................... 15
2.10 Scope of delivery ...............................................................................................................15
2.11 Optional accessories.......................................................................................................... 15
3. Delivery, transport and setting up 16
3.1 Safety regulations.............................................................................................................. 16
3.2 Delivery .............................................................................................................................. 16
3.3 Transport............................................................................................................................16
3.4 Unpacking ......................................................................................................................... 16
3.4.1 Checking for completeness and transport damage....................................................16
3.4.2 Disposing of packaging material.................................................................................16
3.5 Storage after delivery ........................................................................................................ 17
3.6 Setting up..........................................................................................................................17
3.6.1 Installation options......................................................................................................18
4. Putting into operation 19
4.1 Connecting the appliance .................................................................................................19
4.2 Fill up and connect the water tank ................................................................................... 19
4.3 Switching on...................................................................................................................... 19
5. Operation and control 20
5.1 Operating personnel.......................................................................................................... 20
5.2 Opening the door.............................................................................................................. 20
5.3 Loading the appliance....................................................................................................... 21
5.4 Operating the appliance.................................................................................................... 21
5.4.1 ControlCOCKPIT...........................................................................................................21
5.4.2 Basic operation............................................................................................................ 23
5.4.3 Operating modes.........................................................................................................23
Contents

5
Contents
5.4.4 Manual mode ..............................................................................................................24
5.4.5 Timer operation...........................................................................................................24
5.4.6 Programme mode ......................................................................................................25
5.5 Monitoring function.......................................................................................................... 27
5.5.1 Temperature monitoring ............................................................................................27
5.5.2 Humidity monitoring (for constant climate chambers HPP only)............................... 32
5.6 Graph................................................................................................................................. 34
5.6.1 Temperature profile ..................................................................................................... 34
5.6.2 Humidity profile (only for constant climate chambers HPP)....................................... 35
5.7 Ending operation...............................................................................................................35
6. Malfunctions, warning and error messages 36
6.1 Warning messages of the monitoring function................................................................ 36
6.1.1 Temperature monitoring ............................................................................................. 36
6.1.2 Humidity monitoring (for constant climate chambers HPP only)............................... 37
6.2 Malfunctions, operating problems and appliance errors ................................................ 38
6.3 Power failure......................................................................................................................38
7. Menu mode 39
7.1 Overview............................................................................................................................ 39
7.2 Basic operation in menu mode using the example of language selection....................... 40
7.3 Setup.................................................................................................................................. 41
7.3.1 Overview...................................................................................................................... 41
7.3.2 IP address and subnet mask........................................................................................ 41
7.3.3 Unit42
7.3.4 Temperature monitoring (alarm) ...............................................................................43
7.3.5 Timer Mode ................................................................................................................. 44
7.3.6 Balance (only for model sizes 260 and 750)............................................................... 45
7.4 Date and Time ..................................................................................................................46
7.5 Adjustment........................................................................................................................ 47
7.5.1 Temperature adjustment............................................................................................. 47
7.5.2 Humidity adjustment (for constant climate chambers HPP only)...............................50
7.6 Program.............................................................................................................................52
7.7 Sound ................................................................................................................................ 53
7.8 Protocol ............................................................................................................................. 54
7.9 User-ID ...............................................................................................................................55
7.9.1 Description................................................................................................................... 55
7.9.2 User ID activation and deactivation ............................................................................ 55
8. Maintenance and service 56
8.1 Cleaning.............................................................................................................................56
8.1.1 Working chamber and metal surfaces ........................................................................56
8.1.2 Plastic parts.................................................................................................................. 56
8.1.3 Glass surfaces .............................................................................................................. 56
8.1.4 Peltier cooling module................................................................................................. 56
8.2 Regular maintenance.........................................................................................................56
8.3 Repairs and service ............................................................................................................ 57
9. Storage and disposal 58
9.1 Storage .............................................................................................................................. 58
9.2 Disposal ............................................................................................................................. 58
Index 59

6
Safety regulations
1. Safety regulations
1.1 Terms and signs used
In this manual, certain common terms and signs are used to warn you of danger or to give
you hints that are important in avoiding injury or damage. Observe and follow these hints and
regulations to avoid accidents and damage. These terms and signs are explained below.
1.1.1 Terms used
"Warning" is used whenever you or somebody else could be injured if you do not
observe the accompanying safety regulation.
"Caution" is used for information that is important for avoiding damage.
1.1.2 Signs used
Warning signs (warning of a danger)
Danger of
electrocution
Danger of explosion Dangerous gases /
vapours
Danger of toppling
over
Prohibition signs (forbidding an action)
Do not lift Do not tilt Do not enter
Regulation signs (stipulating an action)
Disconnect the
mains plug
Wear gloves Wear safety boots Observe information
in separate manual
Other icons
Important or useful additional information

7
Safety regulations
1.2 Product safety and dangers
The appliances described in this manual are technically sophisticated, manufactured using
high-quality materials and subject to many hours of testing in the factory. They contain the
latest technology and comply with recognised technical safety regulations. However, there are
still risks involved, even when the appliances are used as intended. These are described below.
Warning!
After removing covers, live parts may be exposed. You may receive
an electric shock if you touch these parts. Disconnect the mains plug
before removing any covers. Only electrical technicians may work on
the electrical equipment of the appliances.
Warning!
When loading the appliance with an unsuitable load, poisonous
or explosive vapours or gases may be produced. This could cause
the appliance to explode, and people could be severely injured or
poisoned. The appliance may only be loaded with materials/test
objects which do not form any toxic or explosive vapours when
heated up (see also chapter "Intended use" on page 8).
Warning!
In case of appliances of a certain size, you can get accidentally
locked in, which is life-threatening. Do not climb into the appliance!
1.3 Requirements of the operating personnel
The appliance may only be operated and maintained by persons who are of legal age
and have been instructed accordingly. Personnel who are to be trained, instructed or who
are undergoing general training may only work with the appliance under the continuous
supervision of an experienced person.
Repairs may only be performed by qualified electricians. The regulations in the separate service
manual must be observed.
1.4 Responsibility of the owner
The owner of the appliance
►is responsible for the flawless condition of the appliance and for it being operated in
accordance with its intended use (see page 8);
►is responsible for ensuring that persons who are to operate or service the appliance are
qualified to do this, have been instructed accordingly and are familiar with the operating
instructions at hand;
►must know about the applicable guidelines, requirements and operational safety
regulations, and train staff accordingly;
►is responsible for ensuring that unauthorised persons have no access to the appliance;
►is responsible for ensuring that the maintenance plan is adhered to and that maintenance
work is carried out properly (see page 56);

8
Safety regulations
►has to ensure that the appliance and its surroundings are kept clean and tidy, for example
through corresponding instructions and inspections;
►is responsible for ensuring that personal protective clothing is worn by operating
personnel, e.g. work clothes, safety shoes and protective gloves.
1.5 Intended use
Constant climate chambers HPP and cooled incubators IPPPLUS may be used exclusively for
temperature and climate testing of materials and substances in the context of the procedures
and specifications described in this manual. Any other use is improper, and may result in
hazards and damage.
The appliance is not explosion-proof (does not comply with the German workplace health &
safety regulation VBG 24). The appliance may only be loaded with materials and substances
which cannot form any toxic or explosive vapours at the set temperature and which cannot
explode, burst or ignite.
The appliance may not be used for drying, vaporising and branding paints or similar materials
the solvents of which could form an explosive mixture when combined with air. If there is
any doubt as to the composition of materials, they must not be loaded into the appliance.
Potentially explosive gas-air mixtures must not form, neither in the working chamber nor in
the direct vicinity of the appliance.
1.6 Changes and alterations
No unauthorised changes or alterations may be made to the appliance. No parts may be
added or inserted which have not been approved by the manufacturer.
Unauthorised changes or alterations result in the EC declaration of conformity losing its
validity, and the appliance may no longer be operated.
The manufacturer is not liable for any damage, danger or injuries that result from
unauthorised changes or alterations, or from non-observance of the regulations in this
manual.
1.7 Behaviour in case of malfunctions and irregularities
The appliance may only be used in a flawless condition. If you as the operator notice
irregularities, malfunctions or damage, immediately take the appliance out of service and
inform your superior.
You can find information on eliminating malfunctions from page 36.
1.8 Switching off the appliance in an emergency
Push the On/Off switch on the control panel
(Fig. 1). This disconnects the appliance from
the power supply at all poles.
ON
O
O
ON
N
N
N
O
O
N
O
Fig. 1
Switch off the appliance by pressing the On/
Off switch

9
Construction and description
2. Construction and description
2.1 Construction
1
2
3
4 5 6
1
7
8
9
Fig. 2 Construction
1 ControlCOCKPIT with capacitive function
keys (see page 22)
2 On/Off switch (see page 19)
3 Working chamber fans
4 Steel grid
5 Working chamber
6 Nameplate (see page 13)
7 Door handle (see page 20)
8 Turn control with confirmation key
9 USB interface (see page 12)

10
Construction and description
2.2 Description
The appliance can heat the working chamber up to 70 ºC and cool it down to 5 ºC. Low-
noise, long-life and energy-saving Peltier cooling and heating technology is used for this. In
heating operation, a part of the required energy is extracted from the surroundings (heat
pump principle).
Additionally, the humidity in the interior of constant climate chambers HPP can be regulated
between 10 and 90 % rh (rh = relative humidity). The humidity is increased by water from a
tank being evaporated and fed into the interior, and is reduced through condensation on a
Peltier module.
Optionally, the appliance can be equipped with a light module, making it possible to adjust
the interior lighting in steps of 1 %.
2.3 Working range of constant climate chambers HPP
The temperature-humidity diagram (Fig. 3) specifies at what range of temperature and
humidity a permanent, condensation-free operation of the constant climate chamber HPP is
possible.
Caution:
If in operation for long periods at the upper level or outside the working range, puddles
of water may form inside the chamber and water may force its way out of the door seal.
0
10
20
30
40
50
60
70
80
90
100
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
Temperature °C
Humidity % rH
C
A
B
Fig. 3 Temperature-humidity working range of constant climate chambers HPP

11
Construction and description
Range A:
In this range, temperature and humidity can be combined as you please, without resulting in
any significant condensation. If there are extreme ambient conditions, the working range may
be restricted.
Range B:
If the specified range is exceeded upwards, e.g. 80 % rh at 60°C, the hot steam fed in will
immediately condense, due to the dew-point, at the coldest point in the appliance.
Range C:
At low temperatures and low relative air humidity, the effective range is heavily dependent on
the degree of humidity of the chamber load.
2.4 Material
For the outer housing, MEMMERT deploys stainless steel (Mat.No. 1.4016 – ASTM 430) and
for the interior, stainless steel (Mat.No. 1.4301 – ASTM 304) is used, which stands out through
its high stability, optimal hygienic properties and corrosion-resistance towards many (but not
all!) chemical compounds (caution for example with chlorine compounds).
The chamber load for the appliance must be carefully checked for chemical compatibility with
the materials mentioned. A material resistance table can be requested from the manufacturer.
2.5 Electrical equipment
►Operating voltage and current consumption: See nameplate
►Protection class 1, i.e. operating insulation with PE conductor in accordance with EN
61010
►Protection type IP 20 acc. to EN 60 529
►Interference suppression acc. to EN 55011 class B
►Appliance fuse: Fusible link 250 V/15 A quick-blow
►The temperature controller is protected with a miniature fuse 100 mA (200 mA at 115 V)
2.6 Connections and interfaces
2.6.1 Electrical connection
This appliance is intended for operation on an electrical power system with a system
impedance Zmax of a maximum of 0.292 ohm at the point of transfer (service line). The
operator must ensure that the appliance is operated only on an electrical power system that
meets these requirements. If necessary, you can ask your local energy supply company what
the system impedance is.
Observe the country-specific regulations when connecting (e.g. in Germany DIN VDE 0100
with residual current circuit breaker).

12
Construction and description
2.6.2 Communication interfaces
USB interface
The appliance is fitted by default with a
USB interface in accordance with the USB
specification. This way, you can
►transfer software stored on a USB storage
medium to the appliance (see page 52).
►export protocol logs from the appliance
to a USB storage medium (see page 54).
►transfer user ID data stored on a USB
storage medium to the appliance (see
page 55).
The USB port can be found on the right side of the ControlCOCKPIT (Fig. 4).
Ethernet interface
Via Ethernet interface, the appliance can be
connected to a network, so that you can
transfer programmes created with
AtmoCONTROL software to the appliance
and read out protocol logs. The Ethernet
interface is located on the rear of the
appliance (Fig. 5).
For identification purposes, each appliance
connected must have its own unique IP
address. Setting the IP address is described
on page 41.
You will find a description of how to transfer programmes via Ethernet in the
enclosed AtmoCONTROL manual.
With an optional USB to Ethernet converter, the appliance can be directly connected to a
computer / laptop (see "Optional accessories" on page 15).
Fig. 4 USB interface
Fig. 5 Ethernet interface

13
Construction and description
2.7 Designation (nameplate)
The nameplate (Fig. 6) provides information about the appliance model, manufacturer and
technical data. It is attached to the front of the appliance, on the right behind the door (see
page 9).
Typ: HPP 260 F.-Nr.: 0109.0088
230 V~ 2.3 A 50/60 Hz 525 W
DIN12880-Kl.3.1 Nenntemp.: 70 °C
1
2
3
4
5
6
10
8
9
7
Fig. 6 Nameplate (example)
1 Type designation
2 Operating voltage
3 Applied standard
4 Protection type
5 CE conformity
6 Address of manufacturer
7 Disposal note
8 Temperature range
9 Connection / power ratings
10 Appliance number

14
Construction and description
2.8 Technical data
Appliance size 30 55 110 260 750
Appliance width D1[mm] 585 585 745 824 1224
Appliance height E1[mm] 707 787 867 1186 1726
Appliance depth G1(footprint) [mm] 524 604 674 774 874
Depth of door lock [mm] 56
Appliance depth F1(including door handle) [mm] 580 660 730 830 930
Working chamber width A1[mm] 400 400 560 640 1040
Working chamber height B1[mm] 320 400 480 800 1200
Working chamber depth C1[mm] 250 330 400 500 600
Chamber volume [litres] 32 53 108 256 749
Weight [kg] 42 53 84 115 211
Power [W] 214 240 350 525 1050
Current consumption [A] 1.0 1.1 1.6 2.3 4.6
max. number of sliding shelves 3 4 5 9 14
max. load per sliding shelve [kg] 30
max. load per appliance [kg] 60 80 100 180 280
Temperature Adjustment range 0 to +70 °C
Adjustment precision 0.1 K
Humidity (HPP only) Adjustment range – 10 … 90 % rh
1see Fig. 7
D
A
F
G
C
56
E
B
90
Fig. 7 Dimensions

15
Construction and description
2.9 Ambient conditions
►The appliance may only be used in enclosed rooms and under the following ambient
conditions:
Ambient temperature 16 ºC to 28 ºC
Humidity rh max. 70 %, non-condensing
Overvoltage category II
Pollution degree 2
Altitude of installation max. 2,000 m above sea level
►The appliance may not be used in areas where there is a risk of explosion. The ambient air
must not contain any explosive dusts, gases, vapours or gas-air mixtures. The appliance is
not explosion-proof.
►Heavy dust production or aggressive vapours in the vicinity of the appliance could lead
to sedimentation in the interior and, as a consequence, could result in short circuits or
damage to electrical parts. For this reason, sufficient measures to prevent large clouds of
dust or aggressive vapours from developing should be taken.
2.10 Scope of delivery
►Power cable
►Sliding grid (load capacity 30 kg each)
►USB storage medium with software and AtmoCONTROL manual
►The operating instructions at hand
►Calibration certificate
►Separately packaged fastening material for wall mounting (see page 17)
In addition for constant climate chambers HPP
►Water tank with connection hose
2.11 Optional accessories
►Converter USB to Ethernet (Fig. 8). Makes it
possible to connect the appliance's
network interface (see page 12) to the USB
port of a computer / laptop.
►Reinforced, sliding steel grids with a load
capacity of 60 kg each (for appliance size
110 and larger)
Fig. 8 Converter USB to Ethernet

16
Delivery, transport and setting up
3. Delivery, transport and setting up
3.1 Safety regulations
Warning!
You may get your hands or feet squashed when transporting
and installing the appliance. Wear protective gloves and
safety boots.
Warning!
Because of the heavy weight of the appliance, you could injure
yourself if you try to lift it. To carry appliances of the sizes 30 and
55, at least two persons, for appliances of the sizes 75 and 110, four
persons are needed. Appliances larger than that may not be carried
but must be transported with a manual pallet jack or forklift truck.
30 55 110 260 750
Warning!
The appliance could fall over and seriously injure you. Never tilt the
appliance and transport it in upright position only.
3.2 Delivery
The appliance is packed in cardboard and is delivered on a wooden palette.
3.3 Transport
The appliance can be transported in three ways:
►With a forklift truck; move the forks of the truck entirely under the pallet
►On a manual pallet jack
►On its own castors, in case of the corresponding configuration, for which the catch on the
(front) castors must be released
3.4 Unpacking
To avoid damage, do not unpack the appliance until you reach the installation site.
Remove the cardboard packaging by pulling it upwards or carefully cutting along an edge.
3.4.1 Checking for completeness and transport damage
►Check the delivery note to ensure that the delivery is complete.
►Check the appliance for damage.
If you notice deviations from the delivery note, damage or irregularities, do not put the
appliance into operation but inform the haulage company and the manufacturer.
3.4.2 Disposing of packaging material
Dispose of the packaging material (cardboard, wood, foil) in accordance with the applicable
disposal regulations for the respective material in your country.

17
Delivery, transport and setting up
3.5 Storage after delivery
If the appliance is first to be stored after delivery: Read the storage conditions from page 58.
3.6 Setting up
Warning!
Due to their centre of gravity, appliances of certain sizes can
fall over to the front and injure you or other people. Separately
packaged fastening material is included in the scope of delivery of
the appliances concerned. After setting up the appliance, use this
fastening material for mounting the appliance's rear side to a wall.
Observe the assembly instructions provided.
The installation site must be flat and horizontal and must be able to reliably bear the weight
of the appliance (see ""Technical data"" on page 14). Do not place the appliance on a flammable
surface.
Depending on the model (see nameplate), a 230 V or 115 V power connection must be
available at the installation site.
The distance between the wall and the rear of the appliance must be at least 15 cm. The
clearance from the ceiling must not be less than 20 cm and the side clearance from walls or
nearby appliances must not be less than 5 cm (Fig. 9). Sufficient air circulation in the vicinity of
the appliance must be guaranteed at all times.
FP FP FP
FP
Fig. 9 Minimum clearance from walls and ceiling

18
Delivery, transport and setting up
3.6.1 Installation options
Setting up Comments Suitable for appliance size ...
30 55 110 260 750
Floor

Table
Check the load capacity first 
Stacked
two appliances maximum;
mounting material (feet) provided 
Wall
mounting Separately packaged fastening
material is included in the scope
of delivery. Observe the assembly
instructions provided.

Base
with/without castors 
Castor
frame

Height adjustable
feet


19
Putting into operation
4. Putting into operation
Caution:
The first time the appliance is operated, it must not be left unattended until it has reached
the steady state.
4.1 Connecting the appliance
Caution:
Observe the country-specific regulations when
making connections (e.g. in Germany DIN VDE 0100
with residual current circuit breaker). Observe the
connection and power ratings (see nameplate and
"Technical Data" on page 14).
Plug the provided power cable into the rear of the
appliance and connect it to the power supply (Fig. 10).
4.2 Fill up and connect the water tank
(for constant climate chambers HPP only)
Fill the supplied water tank with water and
connect it with the enclosed tube to the "H2O"
connection on the rear of the chamber (Fig.
11).
Water specifications
For steam creation, use only:
►steam distilled water (aqua dest)
or
►Demineralised water (aqua dem) in
accordance with VDE 0510/DIN EN 50272;
regulations must be strictly adhered to
(production conductivity ≤10 μS/cm).
Battery water in accordance with VDE 0510
is available in larger chemist's shops, super markets, hardware stores and in the wholesale
trade. The standard VDE 0510/DIN EN 50272 has to be explicitly specified on the label.
Otherwise, possible calcification in the steam generators, steam piping and peristaltic pumps
could affect the operability of the device.
Use only water with a pH value of > 5 and < 7.
4.3 Switching on
Switch on the appliance by pressing the On/Off switch
on the front of the appliance (Fig. 12).
If the appliance has never been operated before, you
will be prompted to set the operating language, date
and time when you first switch it on. A description of
how to do this is given from page 40. However, to get a
basic overview of operating the appliance, you should
read the following chapter first.
Fig. 10 Connect the power
cable to the rear of the appliance
Fig. 11 Water connection
ON
O
O
ON
N
N
N
O
O
N
O
Fig. 12 Switching on the ap-
pliance

20
Operation and control
5. Operation and control
5.1 Operating personnel
The appliance may only be operated by persons who are of legal age and have been instruct-
ed accordingly. Personnel who are to be trained, instructed or who are undergoing general
training may only work with the appliance under the continuous supervision of an experi-
enced person.
5.2 Opening the door
►To open the door, pull the handle bar to the side (to the left or to the right, depending on
the door variation, see Fig. 13, A). The door opens slightly, so that the heat can be vented
with the door ajar in case of high temperature inside the chamber. The door can then be
opened completely (B).
►To close the door, push the handle bar back (C).
ACB
Fig. 13 Opening and closing the door
Warning!
In case of appliances of a certain size, you can get accidentally
locked in, which is life-threatening. Do not climb into the appliance!