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HCP 246
User Manual
48 pgs1.72 Mb0

Memmert HCP 246 User Manual

OPERATING INSTRUCTIONS
Humidity Chambers
HCP 108 HCP 153 HCP 246
HCP page 2
1 General notes and safety notes ............................................................................................................5
1.1 Transport .................................................................................................................................5
2 Installation ..........................................................................................................................................6
2.2 Stackable version (accessory) .................................................................................................... 6
2.3 Initial start-up .......................................................................................................................... 7
2.4 Oven load ................................................................................................................................7
3 Technical data ..................................................................................................................................... 8
3.1 Working range of the HCP units ...............................................................................................9
3.2 Standard equipment of HCP units ..........................................................................................10
3.4 Electrical equipment ..............................................................................................................11
3.5 Note on EMC (electromagnetic compatibility) .........................................................................11
3.6 External connection ............................................................................................................... 11
3.7 Water connection ..................................................................................................................11
4 Oven construction and operation ...................................................................................................... 12
4.1 Operating the door ................................................................................................................12
4.2 Controls and indications ........................................................................................................ 12
4.4 Setting the temperature (quick setting) .................................................................................. 13
5 Selecting the operating mode ...........................................................................................................13
6 Setting the parameters ......................................................................................................................13
7 Normal operation ..............................................................................................................................14
8 Weekly programmer ..........................................................................................................................16
9 Programme operation .......................................................................................................................18
9.1 Closure commands for ramp segments .................................................................................. 20
10 Printer .............................................................................................................................................24
11 Basic oven settings (Setup) .............................................................................................................. 25
12 Temperature monitor and protection devices ................................................................................... 26
12.1 Mechanical temperature monitor: temperature limiter (TB) ................................................... 26
12.2 Electronic temperature monitor ...........................................................................................27
12.2.1 Overtemperature protection ..............................................................................................27
12.2.2 Undertemperature protection ........................................................................................... 27
12.2.3 Adjustable temperature monitor (TWW) Protection Class 3.1 to DIN 12 880 ...................... 27
12.2.4 Automatic temperature monitor (ASF) ..............................................................................28
13 Active humidity control (%rh) .......................................................................................................... 30
14 Audible alert signals ........................................................................................................................31
15 Sterilisation chip card ......................................................................................................................32
16 User-ID-Card (available as optional extra) .........................................................................................33
17 Calibration ......................................................................................................................................34
17.1 Temperature ........................................................................................................................34
HCPpage 3
18 Communication interface for the PC ................................................................................................38
18.1 Communication interface RS232C ........................................................................................38
18.2 Bus interface RS485 .............................................................................................................39
19 Report memory ............................................................................................................................... 40
19.1 Reading the report memory .................................................................................................40
19.2 Reading the report memory into the PC via RS232C .............................................................40
19.3 Printing the report memory from the oven ........................................................................... 40
20 Cleaning .........................................................................................................................................41
21 Maintenance ................................................................................................................................... 42
22 Check list for fault rectification ........................................................................................................43
23 Supply failure ..................................................................................................................................44
24 CE Conformity Declaration ..............................................................................................................45
25 Address and customer service ..........................................................................................................46
HCP page 4
1 General notes and safety notes
You have purchased a technically fully proven product which has been produced in Germany with the use of high-grade materials and the application of the latest manufacturing techniques; it has been factory tested for many hours. For this unit we guarantee availability of spares for 10 years
Observation of the Operating Instructions is necessary forfaultless
operation and for any possible claims under warranty.
If these Instructions are disregarded, all claims under warranty,
guarantee and indemnification are excluded.
This mark on the product means:
Note Operating Instructions
Warning – oven hot when operating
The right to technical modifications is reserved. Dimensional details are not binding.
1.1 Transport
Always use gloves! For transportation, please put the unit in upright position on a suitable transportation cart. If the units have to be carried, at least 2 people are necessary for model 108, 153 and 4 people for model 246.
Do not place the oven on a readily inflammable support surface!
It is important that the oven is set up accurately horizontally!
HCPpage 5
2 Installation
The oven can be placed on the floor or on a bench (working surface).
cm
min. 20
It is important that the oven is set up accurately horizontally; the door may have to be adjusted
min. 8
cm
min. 8
cm
min. 15
cm
(see section 21)
The spacing from the back of the oven to the wall should be at least 15 cm. The spacing to the ceiling must not be less than 20 cm and that at the side to the wall not less than 8 cm. Generally it is essential to have adequate air ventilation around the oven.
2.1 Subframe (accessory)
Models 108, 153 and 246 can be placed on a subframe.
2.2 Stackable version (accessory)
Two ovens of the same model size can be stacked on each other. Foot locators have to be fitted on the bottom oven. Mounting:
• Take off cover of bottom oven
• Place drill jig (supplied with foot locators) into the inverted cover at the back
• Mark holes and drill 4.2 mm dia
• Screw the foot locators to the top of the cover using the screws and nuts supplied
• Re-fit the cover
WARNING! Always pull out the supply plug before
opening the oven cover!
HCP page 6
2.3 Initial start-up
When the oven is started up for the first time, it should be supervised continuously until steady conditions have been reached. Severe vibrations during transport may cause movement of the temperature probes in their holder inside the chamber. Note therefore that before the first start-up the temperature probes should be checked for their correct position and, if necessary, carefully aligned in their mounting (see ill).
2.4 Oven load
Full consideration must be given to the physical and chemical properties of your load (e.g. combustion temperature etc.) in order to prevent serious damage to load, oven and surroundings. Please note that the MEMMERT ovens described here are not explosionproof (they do not conform to the Industrial Association Specification VBG 24) and are therefore not suitable for drying, evaporating and burning-in of paints, enamels or similar materials whose solvents may produce an inflammable mixture with air. There must be no possibility of the formation of inflammable gas/air mixtures either within the oven chamber or in the immediate surroundings of the equipment. Large amounts of dust or corrosive fumes inside the oven chamber or in the surroundings of the equipment may produce deposits within the oven and lead to short-circuits or damage the electronics. It is therefore important that adequate precautions are taken against excessive dust or corrosive fumes.
In order to ensure proper air circulation inside the chamber, there must be sufficient spacing of the load inside the oven. Do not place any load on the floor, against the side walls or underneath the ceiling of the chamber (heating ribs).
HCPpage 7
3 Technical data
supply cable serial and parallel interface
H
O
2
inner glas door
mm (minimum height)
adjusting screw
Model HCP 108 HCP 153 HCP 246 Chamber width A [mm] 560 480 640 Chamber height B [mm] 480 640 640 Chamber depth C [mm] 400 500 600 Housing width D [mm] 710 630 790 Housing height E (variable through adjustable feet) [mm] 778 920 938 Housing depth F (including door handle) [mm] 590 690 790 Chamber volume [litre] 108 153 246 Weight [kg] 70 90 110 Power [W] 1000 1500 2000 Max. number of shelves
577 Max. load per shelf [kg] 30 30 30 Max. load per oven [kg] 60 60 80 Ambient
conditions
• ambient temperature 5°C to 35°C
• rh 80% max. (no condensation)
• overvoltage category: II, contamination level: 2
Temperature • temperature is measued with Pt100 in 4-wire circuit
• adjustment range:: - normal operation with humidity: 20°C to 90°C
- normal operation without humidity: 20°C to 160°C
- sterilisation operation: 160°C (4 hours) via STERICard
• setting accuracy: 0,1°C
• control range: from 8°C above ambient up to 90°C / 160°C
• variation (time): ±0,1°C max
• uniformity (space): ±0.25°C max. at 50°C and 20-90%rh
±0,5°C at 90°C and 20-90%rh ±1,3°C at 160°C and with humidity control deactivated
Humidity The relative humidity in the chamber is measured by a capacitive humidity sensor and
indicated digitally in %.
• accuracy of humidity sensor: 1% rh
• adjustment range: 20 to 95%rh
• setting accuracy: 1rh%
• indication range: 10 to 98rh%
• variation (time): ±1%rh max
HCP page 8
3.1 Working range of the HCP units
The temperature-humidity diagram of the humidity chamber HCP indicates the range of temperature and humidity within which continuous condensation-free operation is possible.
B
A
Humidity %rh
C
Temperature °C
Range A: Within this range, any combination of temperature and humidity is possible without any appreciable condensation.
Range B: Above the range indicated, e.g. 80% rH at 80°C, the steam introduced immediately condenses at the coldest point of the unit due to the dew point.
With prolonged operation outside the working range there is a
possibility of water puddles forming inside the chamber and water
can escape from the door seal!
Range C: At low temperatures and low relative humidity, the usable range depends largely on ambient temperature and humidity. In order to be able to use the range of low temperatures and low relative humidity the unit has to be set up in a cool and dry room.
HCPpage 9
3.2 Standard equipment of HCP units
• Electronic fuzzy-supported PID process controller with plus-package control and permanent power proportioning and a time-saving autodiagnostic system for rapid fault finding (see section 22)
• Recessing push/turn control for simple operation of oven
• Language selection (English, French, Spanish, Italian, German)
• Alphanumerical text display
• Large-area all-round heating with additional heat conduction jacket
• Capacitive humidity sensor
• Active humidity control (fresh air via sterile filter) avoids condensation and ensures rapid achievement of set humidity as well as short recovery times
• Uniform atmosphere and temperature distribution through encapsulated and turbulence-free ventilation system
• Control of oven and documentation of actual values on MEMoryCard XL
• Programme sequence control for up to 40 ramp segments
• 7 different ramp exit commands for advanced temperature applications
• STERIcard for fully automatic sterilisation control during hot air sterilisation of complete cabinet including sensors and fan disc
• Integral weekly programmer with group function (e.g. all workdays)
• Two separate PT100 temperature sensors Class A in 4-wire circuit for control and monitoring
• Digital monitor controller for overtemperature, undertemperature, and as automatically setpoint following monitor (ASF)
• Mechanical temperature limiter (TB Class 1)
• Monitor relay to switch off heating in case of fault
• Visual alarm indication
• Audible signal on over-/undertemperature, over-/under-humidity and open door
• Internal documentation memory 1024kB as ring memory for all temperature and humidity values, errors and settings with real-time and date. Documentation approx. 3 months at 1 minute storage interval
• Calibration possible without separate PC: 3-point calibration for temperature on the controller and 2-point calibration for humidity at 20% rH and 90% rH
• Parallel printer interface (PCL3-compatible) for printing documentation data
• Serial RS-232C interface for computer-supported temperature programmes and for reading the internal report memory
• MEMMERT software “Celsius 2007“ for control and documentation of temperature and relative humidity via a PC
• A pre-formatted blank MEMoryCard XL with 32 kB storage capacity, reprogrammable for up to 40 ramp segments and additionally 270 hours report memory at 1 minute intervals
HCP page 10
3.3 Material quality
For the external housing MEMMERT employs stainless steel (Mat.Ref. 1.4016). The chamber is made from stainless steel (Mat.Ref. 1.4301) which exhibits high stability, optimal hygienic properties and corrosion resistance against many (not all) chemical compounds (care required e.g. with chlorine compounds). The oven load has to be checked carefully for its chemical compatibility with the above materials. A compatibility table for materials can be requested from MEMMERT.
WARNING! Always pull out the supply plug before
opening the oven cover!
3.4 Electrical equipment
• Operating voltage see label, 50/60 Hz
• Current rating see label
• Protection Class 1, i.e. operating isolation with ground connection to EN 61010
• Protection IP20 to DIN EN 60529
• Interference suppression to EN55011 Class B
• Oven protected by a fuse 250V/15A fast blow
• Temperature controller protected by a 100 mA fuse (200 mA on 115 V)
• When connecting a MEMMERT oven to the electrical supply you have to observe any local regulations which apply (e.g. in Germany DIN VDE 0100 with FI protection circuit)
3.5 Note on EMC (electromagnetic compatibility)
This product is intended to operate on a supply network with a system impedance Z (building connection) of 0.292 Ohm max. The user has to ensure that the product is only operated on an electrical supply network which meets these requirements. If necessary, details of the system impedance can be obtained from the local electricity supply authority.
at the transfer point
max
Note: Any work involving opening up the oven must only be carried out by a suitably qualified electrician!
3.6 External connection
Equipment connected to the external connections must have interfaces which meet the requirements for safe low voltage (e.g. PC, printer).
3.7 Water connection
The water container supplied has to be filled with distilled water and connected to the H2O connection using the hose supplied. For steam generation, 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.
HCPpage 11
4 Oven construction and operation
1
2
1
3
1
The special feature of the HCP is the particularly uniform conditions inside the chamber. The air is heated by large-area allround heating (1). Humidity is provided by a dry steam generator which produces controlled evaporation of the water. The sterile dry steam is introduced into the chamber above the fan and mixed into the air flow (2). A continuous uniform atmosphere is ensured by the turbulence-free chamber ventilation (3).
4.1 Operating the door
11
The door is opened by clockwise rotation of the handle. Close the door by turning the door handle anticlockwise.
4.2 Controls and indications
time
display
Tu
Mo
on
off
text
display
Programme
operation
manipulation prevention
(User-ID-Card)
We
t2
t1
Sa Su
Fr
Th
t3
t4
PRINT
Interior lighting
(option)
operating mode
indication
heating
4
3
loop
2
1
SETUP
temperature
display
temperature indication
sterilisation
operation
STERI
DEFRO
monitor
°C
alarm
indication
°C
MIN
MAX
AUTO
warning water
container empty
sounder
IN 1
humidity
indication
OUT
IN 2
rh
%
mb
steam
generation
HCP page 12
4.3 Switching on
The oven is switched on by pressing the push/turn control.
Oven switched off. The push/turn control is pushed in and protected against damage.
Oven switched on and can be operated using the push/turn control and the SET key.
4.4 Setting the temperature (quick setting)
Hold down the SET key and set the temperature setpoint with the push/turn control. After the SET key has been released the display briefly flashes the temperature setpoint. The display then changes to the actual current temperature and the controller starts to control to the selected temperature setpoint.
5 Selecting the operating mode
After holding down the SET key (approx. 3 sec), the current operating mode flashes on the display. A different operating mode can be selected with the push/turn control while the SET key is being held down. After the SET key has been released the controller operates in the new operating mode.
SETUP
settings
Normal
operation
Weekly
programmer
Programme
operation
PRINT
Printer Basic
6 Setting the parameters
After an operating mode has been selected, all relevant controller settings are shown simultaneously on the display. A parameter (menu item) can be selected by rotating the push/turn control; all other parameters are then dimmed.v The selected parameter flashes brightly and can now be altered with the push/turn control while holding down the SET key. After the SET key has been released the newly set value is stored.
If the push/turn control or the SET key have not been operated for a period of 30 seconds, the controller automatically returns to the main menu.
Interior lighting (option)
Turn the push/turn control anticlockwise until the light symbol While holding down the SET key, use the push/turn control to set the light on or off.
When operating in the “weekly programmer” mode the internal illumination is switched off automatically when the equipment is switched off by the weekly programmer.
t2
t1
is flashing.
t2
t1
HCPpage 13
7 Normal operation
PRINT
In this operating mode the oven operates continuously. The settings for operating the oven can be selected. The settings act directly on the operation of the oven.
°C
MIN
AUTO
By rotating the push/turn control the following parameters can be selected and can be altered as described in the section 6:
Temperature setpoint Adjustment range:
- with humidity 20 to 90 °C
- without humidity: 20 to 160 °C
SETUP
°C
MAX
IN 1
IN 2
OUT
%
mb
°C
rh
Temperature monitor Settigng: MIN, MAX, AUTO (see section 12)
Humidity setpoint: Adjustment range: 20 to 95 %rh
MIN
AUTO
MAX
%
°C
rh
HCP page 14
Setting example Normal operation
The unit has to heat up to 50°C at a humidity of 95%rh. The monitor function has to be activated at 51°C.
temperature °C
100
80
60
40
20
temperature monitor
relative humidity (rh) %
100
80
60
40
20
time
1. Select operating mode “Normal operation“ After holding down the SET key (approx. 3 sec), the current operating mode is flashing. Select operating mode I with the push/turn control while holding down the SET key. After the SET key has been released the controller is in operating mode I.
2. Select temperature setpoint Hold down the SET key and use the push/turn control to select the required temperature setpoint of 50.0 °C. After the SET key has been released the oven briefly flashes the temperature setpoint. The display then changes to the actual temperature and the controller starts to control to the selected temperature setpoint 50,0 °C. Heating is indicated by the orange heater symbol
.
3. Select monitor temperature: Turn the push/turn control clockwise until the overtemperature protection and the symbol
MAX
or
MIN
flashes. Keep the SET key depressed and use the push/turn control to set the overtemperature protection to 51.0 °C and the undertemperature protection to 49.0 °C. or: Turn the push/turn control clockwise until the monitor temperature and
AUTO
the symbol
flashes. Keep the SET key depressed and set the push/ turn control to on . The tolerance band is selected in the SETUP menu (see section 11).
time
MIN
AUTO
PRINT
SETUP
°C
°C
MAX
4. Select humidity setpoint: Turn the push/turn control clockwise until the humidity display flashes. Keep the SET key depressed and use the push/turn control to set the required humidity setpoint of 96 %. After the SET key has been released the humidity setpoint continues to flash briefly. The display then changes to the actual humidity and the controller starts to control to the set value. Humidification is indicated by the symbol
.
%
rh
HCPpage 15
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