MMM VENTICELL, INCUCELL, INCUCELL V, ECOCELL, STERICELL User manual

Laboratory drying ovens and incubators
line Standard

VENTICELL 55, 111, 222, 404, 707
INCUCELL 55, 111, 222, 404, 707
INCUCELL V 55, 111, 222, 404, 707
ECOCELL 55, 111, 222, 404, 707
STERICELL 55, 111, 222, 404
DUROCELL 55, 111, 222

Operating instructions

MMM Medcenter Einrichtungen GmbH producer:

MMM Medcenter

Einrichtungen GmbH

Schulstrasse 29
D – 82 166 Gräfelfing

Tel.: [phone]
Fax: [phone]

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Contents:

10. 2. 2004

1 GENERAL ...................................................................................................................................... 3

1

1.1 P

URPOSE AND USE....................................................................................................................... 3

2 IMPORTANT INSTRUCTIONS ...................................................................................................... 3

2.1 U

2.2 P

NPACKING, CHECKING AND TRANSPORT ....................................................................................... 3

RE-INSTALLATION ....................................................................................................................... 4

2.3 USEFUL SPACE ............................................................................................................................. 6

3 DESCRIPTION OF THE OVEN...................................................................................................... 7

3.1 G

ENERAL VIEW ............................................................................................................................. 7

STERICELL 55~404 - PLACING THE HEPA FILTER, FILTER DIMENSIONS, FUNCTION AND FILTRATION

CHARACTERISTIC OF THE AIR FILTER

....................................................................................................... 8

3.3 POWER CONNECTION AND CONNECTORS........................................................................................ 9

3.4 CONTROL PANEL......................................................................................................................... 10

4 FUNCTION AND OPERATING.................................................................................................... 11

4.1 S

WITCH-ON ................................................................................................................................11

4.2 SWITCH-OFF............................................................................................................................... 12

4.3 U

SER'S SUPPORTING FUNCTIONS................................................................................................. 12

4.4 SETTING-UP REQUIRED VALUES OF TEMPERATURE, TIME-DELAYED SWITCHING-OFF, NUMBER OF

CYCLES

, TIME-DELAYED SWITCHING-ON. ............................................................................................... 12

4.4.1 Sterilization program setting and run - for STERICELL only.......................................... 14

4.5 L

IST OF ERROR MESSAGES .......................................................................................................... 15

4.6 PRINTING THE PROTOCOL............................................................................................................ 15

4.7 F

UNCTION AND SETTING OF THE SAFETY THERMOSTAT.................................................................. 16

4.8 ADJUSTING AND FUNCTION OF THE AIR FLAP ................................................................................. 17

4.9 EXCHANGING THE DOOR SEALING AND ADJUSTING THE DOOR ........................................................ 18

5 PARAMETERS OF THE APPARATUS....................................................................................... 19

5.1 E

LECTRIC CONNECTIONS............................................................................................................. 20

6 CLEANING OF THE OVEN ......................................................................................................... 20

7 MAINTENANCE ........................................................................................................................... 20

8 WARRANTY AND SERVICE ....................................................................................................... 21

9 TRANSPORT AND STORAGE.................................................................................................... 21

10 THE WAY OF LIQUIDATION OF PACKAGE AND DISCARDED APARATUS ......................... 21

11 OPTIONAL EQUIPMENT............................................................................................................. 21

11.1 D

OOR WITH WINDOW AND INNER LIGHTING (EXCEPT IC, ICV).................................................... 22

11.2 BUSHINGS OF DIAMETER 25, 50, 100 MM ................................................................................ 24

11.3 LOCKABLE DOOR .................................................................................................................... 24

11.4 L

EFT DOOR ............................................................................................................................ 24

11.5 INDEPENDENT SENSOR PT100................................................................................................ 24

11.6 C

11.7 HEPA

OMMUNICATION SW DS COM FOR PC UNDER WINDOWS ...................................................... 24

FILTER ........................................................................................................................ 25

11.8 TWO-DOOR PASSING THROUGH VERSION ................................................................................. 25

11.8.1 Two-door STERICELL 404 - installation data ................................................................. 25

11.9 A

DAPTATION AGAINST DRYING-UP OF CULTIVATING MEDIUMS AND TISSUE CULTURES.................. 29

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1 General

The ovens with electric heating are designed for laboratories, generally for a warming of
various materials by means of hot air at adjustable temperature and optional time. The air
flap enables drying of wet material.
A modern microprocessor (Fuzzy - logic) with a digital display and PT 100 controls the
temperature. Thus exact temperature accuracy and process safety are guaranteed.
The ovens are designed according to EN standards.
They are manufactured of high grade materials with the latest technology.
Each oven is subjected to a strict final test leaving the plant.

1.1 Purpose and Use

VENTICELL (VC) serves for warming of materials by means of hot air with forced-air

circulation by a fan. The ovens are designed for temperatures up to 250 °C, another variant
(+) up to 300 °C.

3

INCUCELL (IC, ICV) serves as an incubator or for cell cultivation in a microbiological
laboratory (see chapter Optional equipment, article Adaptation against drying-up of
cultivating mediums and tissue cultures). The ovens are designed for temperatures up to 70
°C. A quiet operation is characteristic for the variant IC (without a ventilator), more accurate
temperature regulation with small deviations is characteristic for the variant ICV (with
ventilator).

ECOCELL (EC) serves for warming by hot air with natural circulation. The ovens are
designed for temperatures up to 250 °C. They work quietly with lower power consumption
compared with VC units.

STERICELL (SC) serves for sterilizing by hot air with forced-air circulation by a fan. The
ovens are designed for temperatures up to 250 °C. STERICELL uses time-delayed switch­off program for sterilizing, refer to section Set and Running the Sterilizing Program.

DUROCELL (DC) serves for warming by hot air with natural circulation (usefull at procedures
as acid hydrolysis, extraction by nonflammable solvents, thermolysis). The ovens are
designed for temperatures up to 125 °C. Internal surface is covered by a layer of EPOLON,
that protects the chamber against corrosive influence of acids in the form of vapors or liquids.

2 Important Instructions

2.1 Unpacking, checking and transport

Please check after unpacking the oven and its accessories are complete and not damaged.
A possible damage is to be reported to the forwarding agent. An eventual damage must be
immediately reported to the transporting company.

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During the manipulation – in case of lifting the cabinet etc. – the cabinet cannot be hold by
the rail or door. The cabinets of volumes 404 and 707 should be lifted by means of delivered
hooks, the rolls are designed for local moving, not for longer transport.
The standard delivery consists of the temperature cabinet, two sieves.

2.2 Pre-installation

♦ Please read carefully the operating instructions before working with the oven!
♦ Install the instrument by plugging the power cord to a line voltage socket. The specified

parameters of the connection are described in chapter Electrical Connection. Adjust the
position of air valve according to chapter Air Valve - Adjustment and Functions. For
VC, SC and ICV types, adjust two air valves – suction and exhaust.

After the first switching-on of the unit the heating bodies and insulation start to be

baked with a typical a smell; after a few operation cycles this smell disappears,
nevertheless it is suitable, during the insulation baking at a temperature above 100°C,
to secure a sufficient air exchange (e.g. by ventilation or exhaustion).

At temperatures above 100 °C the inner chamber surface becomes yellowish. This

coloration is neither the material nor the device defect.

4

The air exhaust in VC, EC a SC types is protected by a cover rear of the unit. This

cover is placed inside the oven while shipping. When installing the unit, insert the
cover into the horizontal openings bellow and above the exhaust to attach it behind
the exhaust.

An air filter can be connected to the suction hole in SC types - see section

Function and filtration characteristics of the air filter.

Ovens are designed to be operated indoor within ambient temperatures from 5 °C to

40 °C and at maximum relative humidity 80 %.

The oven should be installed with a 100 mm distance to the walls at the side and in

back. The temperature of the air coming out of the exhaust may be up to 250 °C

(resp. 300 °C), so the walls near the oven must be inflammable

.

No inflammable or explodable materials may be put into ovens !

Carrying capacity of the floor during installation of the device must correspond to the

weight of the unit itself taking the weight of the maximum charge into consideration
(see chapter Parameters of the unit).

The unit must not be placed on a pad that could cause a danger of fire or smothering

in case of falling some hot object out of the cabinet.

No inflammable, explosive or toxic materials may be put into ovens! The same

applies to materials that could give off such a stuff.

Goods are only to be put on trays into ovens, never directly on the bottom of the oven!

No dangerous goods are permitted. Ovens may not be used for heating of liquids.

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Aparatus may not be used in the atmosphere with a possible danger of flammable or

explosive anesthetics.

Any assembling or disassembling may be done only when disconnected from

mains! After the button (button 11, fig. 4) activates the stand-by state, the oven
comes only to a stand-by state, however it is not disconnected from the mains!

♦ If the oven is not used for a longer time, disconnect it from mains by pulling the service

cord from the socket

Power cord can not get to the contact with hot parts of the aparatus – protection

cover of exhaust hole

♦ Safety thermostat assures the protection of the oven, surroundings and goods against

surpassing the rated temperature. Protection through temperature safety class 2

according to EN 61010-2-010 is for VC and EC, protection through temperature
safety class 3 according EN 61010-2-010 cs for IC, ICV. Check regularly – daily – the

function safety thermostat.

♦ The door and the exhaust air flap in SC type are provided with microswitches - see

section Setting and running the sterilizing program.

5

Pull out and consequently push in the upper metal plate piece of internal chamber

carefully, there is a danger of cutting through the rubber gasket of the chamber during
careless manipulation.

The maximum permitted loads: see section Parameters of the unit.

Only for STERICELL

The units of STERICELL 404 are provided with a door lock – for securing the safety.
You can enter the chamber, e.g. because of cleaning, only if the door is locked
(blocked) in an open state. You must keep the key all the time you find yourself inside
the chamber.

When operating the cabinets at high chamber temperature there can be the

maximum allowed temperature of 70 °C at their outer surface (exhaust ports and their
surroundings and the surroundings of the chamber sealing, window and door surface
in case of the optional type with window in door) surpassed and there is a danger of
burns. Please take a high precaution.

During the operation of the devices of 404 and 707 at high temperatures a

deformation of the inner door surface occurs as a consequence of thermal tension,
which makes their closing more difficult. If you open the door in this state, do not
close them until the chamber is cooled down. Otherwise the door mechanism could
be damaged.

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2.3 Useful space

Useful space is illustrated on fig. No. 1, where X(H) = 10 % of the inner chamber depth,
X(Š) = 10 % of the inner chamber width, X(V)
bottom of the inner chamber, X(V)

is the distance from the upper most tray to the ceiling of

2

the inner chamber. The required temperature accuracy - see section Parameters of the unit

- is achieved only in the space defined above (according to DIN 12 880 - marked with thick
lines, thin lines mark inner chamber walls). It means, that over the last upper tray there are
the limits from section 5. not obligatory.

For Stericell following definition of the sterilizing space is valid:
at the side to the door is X(D) = 20 % of the inner chamber depth, at the rear side in the
single-door type X(D) = 10 % of the inner chamber depth, X(W) = 10 % of the inner chamber
width, X(H)

is the distance from the lowest tray to the bottom of the inner chamber, X(H)2 is

1

the distance from the upper most tray to the ceiling of the inner chamber. The required
temperature accuracy - see section Parameters of the unit - is achieved only in the space
defined above (according to DIN 12 880 - marked with thick lines, thin lines mark inner
chamber walls). It means, that over the last upper tray there are the limits from section 5. not
obligatory.

is the distance from the lowest tray to the

1

6

Fig. 1

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)

3 Description of the oven

3.1 General view

7

Fig. 2

1 Panel of regulator 2 control buttons
3 Plastic cover of the regulator panel 4 control ring and button of

safety thermostat
5 air flap lever 6 case of sensor Pt 100
7 Ventilator (only for VC, ICV a SC) 8 exhaust with air flap (with

all types)
9 Heating elements 10 Power part I

11 Power part II (only three-phase type) 12 Connection to the mains
13 Sensor for air flap position (only for SC) 14 door sensor (only for SC)
15 Suction hole (only for VC, ICV, SC with air flap) 16 suction opening (with types

EC, IC, DC

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3.2 STERICELL 55~404 - placing the HEPA filter, filter dimensions, function
and filtration characteristic of the air filter

8

fig. 3

Type/

Dimens.

A (mm) 85 85 85 135
B (mm) 290 470 710 1470
C (mm) 50 190 190 190

Height

A+B+305

(mm)

55 111 222 404

680 860 1100 1910

Note: The minimum distance from the filter to the wall is 30 mm.

The air filter is a part of the optional accessories, it is installed when cooling STERICELL by
forced air circulation.
Class of the HEPA filter according to DIN 24 184 is S, according to EUROVENT it is EU 12.

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