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- Page 1 OPERATING MANUAL Climatic test chamber CTC 256 Temperature test chamber TTC 256...
- Page 2 Customer service: Fon: +49 (0) 09122/925-128 and: +49 (0) 09122/925-126 E-Mail: [email protected] For service enquiries, please always specify the appliance number on the nameplate (see page 16 ). © 201 Memmert GmbH + Co. KG Edition /201 Subject to modifications...
- Page 3 This manual describes the setup, function, transport, operation and maintenance of tempera- ture test chambers of the type TTC 256 and climatic test chambers of the type CTC 256. It is intended for use by the trained staff of the operator who are in charge of operating and / or maintaining the test chamber.
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Page 4: Table Of Contents
Content Content Safety regulations Terms and symbols used ..................... 6 1.1.1 Terms used ........................6 1.1.2 Symbols used ......................... 6 Product safety and dangers ....................7 Safety Labelling ........................7 Requirements of the operating personnel ................8 Responsibility of the owner ....................8 Changes and conversions .................... - Page 5 7.3.4 Safety and monitoring equipment for the cooling unit ..........51 Calibration ......................... 51 7.4.1 Temperature calibration ....................51 7.4.2 Humidity calibration (only for CTC 256) ..............53 Automatic defrosting system .................... 54 Communication interfaces ....................55 7.6.1 USB interface ......................55 7.6.2 Communication interfaces RS232/RS485 (optional) ...........
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Page 6: Safety Regulations
Safety regulations Safety regulations 1.1 Terms and symbols used In this manual, certain common terms and symbols are used to warn you of dangers 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. -
Page 7: Product Safety And Dangers
( Fig. 1 ). These stickers must not be removed and must always be well visible. If they become unrecognisable or if they peel off, they must be replaced. You can order the Fig. 1 stickers from Memmert customer service. Warning stickers... -
Page 8: Requirements Of The Operating Personnel
Safety regulations 1.4 Requirements of the operating personnel The test chamber may only be operated and maintained by persons who are of legal age, and who have received instructions for the test chamber. Personnel who are to be instructed or who are undergoing general training may only work with the test chamber under the continu- ous supervision of an experienced person. -
Page 9: What To Do In Case Of Accidents
Safety regulations 1.8 What to do in case of accidents 1. Keep calm. Act resolutely and with consideration. Pay attention to your own safety. 2. Switch off test chamber. 3. Call a doctor. 4. Initiate first aid measures. If available: Call a trained first aid helper. 1.9 Switching off test chamber in an emergency Push main switch on front side of appliance ( Fig. -
Page 10: Design And Description
Design and description Design and description 2.1 Design Fig. 3 Design of TTC temperature test chambers and CTC climatic test chambers 1 Controller/operating panel (see page 28 ) 11 Additional socket 230 volt/max. 5 amp. 2 Main switch / push-turn control (see page (see also Fig. -
Page 11: Description
Design and description Fig. 4 Connection panel at bottom left of appliance base (see Fig. 3 , Items 10 and 11) 1 Socket 230 volt/max. 5 A 2 Floating switch contact SP = setpoint reached for message that the temperature in the chamber lies within a tolerance range of ±... -
Page 12: Working Range
Design and description Important: The relative air humidity can only be set in the temperature range of 10 °C to 95 °C. The CTC climatic test chamber has two freshwater tanks with automatic switchover (see page 22 ). The currently active tank is indicated in the control display by “TANK1” or “TANK2” (see page 28 ). -
Page 13: Basic Equipment
USB interface (optionally Ethernet) for computer-based temperature control programmes and to read out the controller’s internal log memory (see page 55 ) ► MEMMERT Celsius software from version V9.4 for remote control of the test chamber via computer and to read out the controller’s internal log memory... -
Page 14: Material
2-point calibration for humidity at 20 % rh and 90 % rh (see page 51 ) 2.5 Material For the outer housing, MEMMERT uses stainless steel (W.St.No. 1.4016 = ASTM 430), for the interior, stainless steel (W.St.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). -
Page 15: Ec Declaration Of Conformity
Design and description 2.7 EC Declaration of Conformity EC De eclaration of Conformit Manufacturer’s name and addres MEMMERT GmbH + Co. KG Äußere Rittersbach er Straße 38 91126 Schwabach, Germany Product: limatic Testing Cham mbers Type: CTC.../ TTC Size: Rated voltage:... -
Page 16: Designation (Nameplate)
Design and description 2.8 Designation ( nameplate) The nameplate provides information about the appliance model, manufacturer and technical data. It is attached to the front of the appliance, on the right beneath the interior (see page 10 ). Fig. 9 Nameplate 1 Type designation 2 Connected loads... -
Page 17: Technical Data
Design and description 2.9 Technical data Type TTC 256 CTC 256 Chamber width A* [mm] Chamber height B* [mm] Chamber depth C* [mm] Appliance width D* [mm] Appliance depth F* [mm] 1100 Appliance height E* [mm] 1730 Chamber volume [liter] Weight [kg] ≤... -
Page 18: Environmental Conditions
Design and description Fig. 10 Dimensions of CTC/TTC test chambers 2.10 Environmental conditions ► The test chamber may only be used in enclosed rooms and under the following environ- mental conditions: Ambient temperature: 16 ºC to 28 ºC Air humidity: max. -
Page 19: Delivery, Transport And Setting Up
Delivery, Transport and Setting Up Delivery, Transport and Setting Up 3.1 Safety Regulations Warning! You may get your hands or feet squashed when transporting and installing the test chamber. Wear protective gloves and work shoes. Warning! Because of the weight of the chamber, you could get injured if you try to lift it. -
Page 20: Transport
Delivery, Transport and Setting Up 3.4 Transport The test chamber can be transported in three ways: ► on its own castors, for which the catch on the (front) castors must be released ► with a fork-lift truck; move the forks of the truck entirely under the test chamber ►... -
Page 21: Putting Into Operation
Putting into Operation Putting into Operation Caution: The test chamber may not be put into operation before 24 hours after installation at the point of operation, so that any oil that may have penetrated the tubing can flow back into the compressor of the cooling unit and return to room tempera- ture. -
Page 22: Filling The Freshwater Tanks
Putting into Operation 4.4 Filling the freshwater tanks (only for CTC 256 climatic test chambers) Water specifications For steam generation, use only: ► Steam-distilled water (aqua dest) ► Demineralised water (aqua dem) in accordance with VDE 0510/DIN EN 50272; regulations must be strictly adhered to (production conductivity ≤... -
Page 23: Connecting
Putting into Operation 4.5 Connecting Caution: Observe the country-specific regulations when making connections (e.g. in Germany DIN VDE 0100 with an RCD circuit breaker). Also observe the connected loads and power values (see chapter 2.9 Technical data on page 17 ). The test chamber is intended for operation on an electrical power system with a system im- pedance Z at the point of transfer (service line) of a maximum of 0.292 Ohm. -
Page 24: Operation And Control
Operation and control Operation and control 5.1 Operating staff The test chamber may only be operated by persons who are of legal age, and who have re- ceived instructions for the test chamber. Personnel who are to be instructed or who are under- going general training may only work with the test chamber under the continuous supervision of an experienced person. -
Page 25: Opening And Closing The Door
Operation and control 5.4 Opening and closing the door Danger! When opening the chamber door, hot steam may escape and scald you in the face if the test chamber was in operation directly before this. Remain behind the door when you open it and let out the steam, or allow the test chamber to cool down before opening the... -
Page 26: Loading The Test Chamber
Operation and control 5.5 Loading the test chamber Warning! When loading the chamber with an unsuitable load, toxic or explo- sive vapours or gases may be produced. This could cause the cham- ber to explode, and people could be badly injured or poisoned. The chamber may only be loaded with materials/test objects which do not form any toxic or explosive vapours when heated up and cannot ignite (see also chapter 2.6 Intended Use on page 14 ). -
Page 27: Basic Operating Information
Operation and control 5.6 Basic operating information 5.6.1 Switching appliance on and off The test chamber is switched on and off by pressing the main switch/push-turn control on the front of the appliance. ► Switching on: press the main switch so that it comes out of the appliance ( Fig. 19 ). ►... -
Page 28: Operating Panel/ Controller
15 Display: appliance dehumidified (only for CTC 256) 16 Display: steaming process (only for CTC 256) 17 Warning water tank empty (only for CTC 256, see page 22 ) 18 Fan speed 19 Chip card reader (see page 58 ) -
Page 29: Basic Operation
33 . ► Programme mode: Time sequences of temperature, humidity (only with CTC 256) and fan values are programmed (so-called ramps), which the test chamber automatically works through one after another. Operation in this mode is described from page 35 . -
Page 30: Operating Mode - Settings
Operation and control PRINT SETUP Normal mode Week time Programme Printer Basic appliance (see page 30 ) switch mode (see page 46 ) settings (see page 33 ) (see page 35 ) (see page 46 ) Fig. 22 Operating modes 5.8 Operating mode - settings 1. -
Page 31: Example Setting Normal Mode
The test chamber should heat up to 50 °C with a humidity of 70 % rh and a fan speed of 40 %. The monitoring function MAX should respond at 55 °C and MIN at 45 °C: Temp. monitoring MAX Temp. monitoring MIN Time Time Time Fig. 23 Example of normal mode (only for CTC 256) - Page 32 The tolerance band is set in the SETUP menu (see Chapter 7.2 ). 5. Setting the humidity setpoint (only for CTC 256) Turn the push-turn control to the right until the humidity dis- play flashes. Hold down the SET key and set the desired humid- ity setpoint of 70.0 % rh with the push-turn control.
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Page 33: Week Time Switch
Operation and control 5.8.3 Week time switch In this operating mode, the week time switch is active and the test chamber switches on and off at PRINT SETUP the time programmed. During the OFF phase of the week time switch, the test chamber is in standby mode. The heating and cooling functions are switched off here and the controller display shows the time, dimmed. -
Page 34: Example Of Settings Week Time Switch
Operation and control Direct setting of the temperature setpoint: If the controller is in standby mode or the week time switch is in the ON phase, the tempera- ture setpoint can be directly accessed by briefly pressing the SET key. By turning the control to the right, you are returned to temperature monitoring and humidity. -
Page 35: Programming Mode
(ramps) can be set with various combinations of temperature, fan speed and humidity (humidity only for the CTC 256), which the test chamber then processes automatically one after another. Not all combinations of temperature and humidity are possible (see also Fig. 5 on page 12 ). - Page 36 Adjustment range: 10 % ... 100 % (shown in picture: air speed 40 %, 4 bars lit up) STERI DEFRO IN 1 IN 2 IN 2 °C °C loop AUTO SETUP PRINT 9. Setpoint humidity/humidity at end of ramp segment (only for CTC 256) Adjustment range: 10 to 90 %rh (shown in picture: humidity 80.0 % rh)
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Page 37: Close Commands For Ramp Segments
Operation and control Each ramp must be completed with a close command connecting the ramp to the next one. These commands thus control the programme sequence: STERI DEFRO IN 1 IN 2 °C °C loop AUTO PRINT SETUP 10. Close command of the ramp segment Setting: NEXT, SPWT (T), SPWT (H), SPWT (TH), LOOP, HOLD, END (shown in picture: Command End;... - Page 38 Operation and control SET-POINT WAIT (H – humidity, only for CTC 256) Wait until setpoint humidity has been reached. Appliance starts the next programme segment only when the programmed setpoint humidity has been reached, even if the set heating up time has already elapsed.
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Page 39: Example Setting Programming Mode
Operation and control 5.8.7 Example setting programming mode For the TTC temperature test chamber there is no programming of humidity. On Monday at 8.00, the test chamber should heat up to 50 °C as quickly as possible, with a fan speed of 40 %, and reach a relative humidity of 70 % rh. Once the temperature and hu- midity have been reached, the test chamber should retain the setpoint values for 45 minutes and then cool down within one hour to a humidity of 50 % rh and 37 °C ( Fig. - Page 40 Operation and control 1. Setting the programming operating mode: PRINT SETUP Hold the SET key down for approx. 3 seconds, the cur- rent operating mode then begins to flash. Select the programming mode operating mode with the push-turn control, while the SET key is held down. After releasing the SET key, the control is in the program- ming operating mode.
- Page 41 Hold down the SET key and set the fan speed of 40 % (4 bars) with the push-turn control. 13. Setting the relative humidity of the second ramp seg- ment (only for CTC 256): Turn the push-turn control to the right until the humid- ity display flashes.
- Page 42 Hold down the SET key and set the fan speed of 40 % (4 bars) with the push-turn control. 18. Setting the relative humidity of the third ramp segment (only for CTC 256): Turn the push-turn control to the right until the humidity display flashes.
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Page 43: Operation With Pc/Laptop (Optional)
The test chamber can optionally be used, controlled and programmed with a PC/laptop. It has corresponding communication interfaces for this purpose (see page 55 and Fig. 3 on page 10 ). The control of the appliance with the Memmert-PC software “Celsius” is described in its own separate manual. 5.9 Ending operation... -
Page 44: Malfunctions And Error Messages
Read the separate service manual for this. Do not try to rectify the error yourself, but contact an authorised customer service point for MEMMERT appliances or contact the customer services department of the company MEM- MERT directly (see page 2). -
Page 45: Power Failure
Continuing the programme can only be done from the PC. The time and the duration of the power failure is documented in the log memory (see page 57 ). Parameter Default value Temperature 20 ºC Humidity (only for CTC 256) 20 % rh Fan speed maximum... -
Page 46: Advanced Functions
Advanced functions Advanced functions 7.1 Printer The test chamber is equipped with a parallel printer port as standard, just as used in comput- ers. A standard PCL3-compatible inkjet printer which has a parallel port interface (e.g. HP DeskJet 5550 or HP DeskJet 9xx) can be connected to the printer port on the left of the test chamber (see page 11 ). - Page 47 Advanced functions Date The controller contains a calendar which automatically accounts for the different lengths of months, and for leap years. Weekday Year Adjustment range: From 2000 to 2100 Acoustic signal at programme end ENDSOUND Setting: OFF oder ON Acoustic signal for alarm, e.g. over/undertemperature ALARM sound Setting: OFF or ON Communication address...
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Page 48: Temperature Monitoring And Safety Equipment
Advanced functions 7.3 Temperature monitoring and safety equipment The monitoring temperature is measured via a separate Pt100 temperature sensor in the chamber interior. The monitoring unit is used to protect the chamber load and as a protection for the appliance and surroundings. Temperature monitoring can be adjusted independently of the operating modes. -
Page 49: Automatic Temperature Monitor (Asf)
Advanced functions Undertemperature limit Adjustment range: -50 ... +200 °C °C Setting: Select the icon with the push-turn control. Hold down the SET key and adjust the temperature limits with the push-turn control. AUTO The lower alarm limit value cannot be set higher than the top one. - Page 50 Advanced functions The ASF alarm goes off automatically as soon as 50 % of the set tolerance band of the set- point (in the example 50 °C ± 1 °C) is reached again (section A). If the temperature setpoint is altered, the ASF is automatically disabled temporarily (see in the example: The setpoint is changed from 50 °C to 25 °C, section D), until it has reached the tolerance range of the new temperature setpoint (section E).
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Page 51: Warning Messages
Advanced functions 7.3.3 Warning messages A repeated acoustic signal indicates an error in the temperature control system or in the hu- midification system. It is set off in the following cases: Overtemperature limit is triggered. Check the MAX setting and increase if necessary (see Chapter 7.3.1 Electronic tem- perature monitoring (TWW) on page 48 ). - Page 52 Advanced functions CAL 3 +0,8 °C CAL 2 -0,4 °C CAL 1 +0,5 °C 30°C -40 °C 150 °C Fig. 30 Temperature calibration (example) Setting: 1. Set the desired compensation temperature in the SETUP (see Chapter 7.2 Basic appliance settings (Setup) on page 46 ) and set the corresponding compensation correction value to 0.0 °C.
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Page 53: Humidity Calibration (Only For Ctc 256)
If all compensation correction values are set to 0.0 °C, the factory calibration settings are restored. 7.4.2 Humidity calibration (only for CTC 256) The test chamber can be calibrated for the individual customer by means of two balance points at 20 and at 90 % relative humidity. For each selected balance point, a positive or nega- tive compensation correction value can be set between and –10 % and +10 %. -
Page 54: Automatic Defrosting System
Advanced functions 2. With a calibrated reference instrument, an actual humidity of 88 % rh is measured at nor- mal operation, with a set setpoint humidity of 90 %rh. 3. Set the compensation correction value in the SETUP for RH 90 to -2.0 %rh: STERI DEFRO IN 2... -
Page 55: Communication Interfaces
Advanced functions 7.6 Communication interfaces Depending on the specifications, the test chamber can be fitted with different communication interfaces (USB, RS 232/485, Ethernet). These are located on the left side of the appliance, in the base (see Fig. 3 on page 10 and Fig. 4 on page 11 ). 7.6.1 USB interface The chamber is fitted by default with a USB interface in accordance with the USB specification. -
Page 56: Connection Of Test Chambers To A Network With Ethernet Interface
Advanced functions 7.6.3 Connection of test chambers to a network with Ethernet interface The test chamber can optionally be equipped with an Ethernet instead of a USB interface. 192.168.1.216 Fig. 32 Connecting one or more test chambers to a network using an Ethernet interface (schematic diagram) For identification purposes, each appliance connected must have its own unique IP address. -
Page 57: Log Memory
Advanced functions 7.6.4 Log memory The controller continually logs all relevant measured values, settings and error messages at 1-minute intervals. The internal log memory is listed as a ring memory, i.e. the oldest log data are always overwritten automatically with new data. The logging function cannot be switched off, but is always active. -
Page 58: Memorycard Xl
Advanced functions 7.6.5 MEMoryCard XL On the MEMoryCard XL ( Fig. 33 ) a temperature control programme with up to 40 ramp segments can be set up (see page 35 ). This can be programmed directly on the control- ler or via the “Celsius” software. To programme the MEMoryCard XL with the PC and the “Celsius“... - Page 59 Advanced functions Programming the MEMoryCard XL from the PC with read-write device Using the card reader which can be purchased separately ( Fig. 34 ), the MEMoryCard XL can be programmed offline from the PC with “Celsius” without the need for a test chamber being connected.
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Page 60: User Id Card (Optionally Available As An Accessory)
Advanced functions 7.6.6 User ID card (optionally available as an accessory) The device number of the appliance and a unique user number are stored in encrypted form on the user-ID card ( Fig. 35 ). The user-ID card therefore works only in the appliance with the corresponding serial number. -
Page 61: Maintenance And Servicing
Maintenance and Servicing Maintenance and Servicing Warning! Depending on operation, the surfaces in the chamber interior may be very hot or very cold. You could suffer from burns or frostbite if you touch these surfaces. Before any maintenance / cleaning work, allow time for the chamber interior to reach room temperature. -
Page 62: Regular Maintenance
Maintenance and Servicing Fig. 36 Fig. 37 Dismantling the right and left inner walls. Pull the temperature sensors (A) out of the Remove the silicone plugs and 8 screws on holders and unscrew the test chamber rear each side and pull out the wall. wall 8.3 Regular maintenance Every three months if in permanent operation... -
Page 63: Adjust Door
Maintenance and Servicing 8.4 Adjust door A well-closing door is indispensable for temperature and climatic test chambers. On Memmert appliances, the tight closing of the door is optimally guaranteed by a chamber seal and door seal. In permanent operation, it is possible that the flexible seal material will settle. -
Page 64: Replacing The Interior Lamps
Maintenance and Servicing 8.6 Replacing the interior lamps 1. Undo the four fixing screws of the glass plate on the ceiling of the interior and remove the glass plate ( Fig. 43 ). 2. Replace the defective lamp with a standard new 25 watt halogen lamp. -
Page 65: Storage And Disposal
Storage and disposal Storage and disposal 9.1 Storage The test chamber may only be stored under the following conditions. ► dry and in an enclosed, dust-free room ► frost-free ► disconnected from the power supply Before storage, empty the freshwater and condensation water tanks (see page 22 ). 9.2 Disposal This product is subject to the Directive 2002/96/EC on Waste Electrical Electronic Equipment (WEEE) of the European Parliament and of the EU... -
Page 66: Index
Index Index Cooling /heating up speed 12, 13 Accidents 9 Heat compensation 12 Cooling unit 51 Acoustic signal 47 Humidity calibration 53 Current consumption 17 Adjust door 63 Humidity operation 11 Customer service 2 Air circulation 17 Air filter 62, 63 Icing 54 Air humidity 18 Dangers 7... - Page 67 Index Opening and closing the Safety class 17 Unpacking 19 door 25 Safety equipment 48 USB interface 55 Operating modes 29 Safety Labelling 7 User-ID-Card 60 Operating mode - settings Safety regulations 6 Service 64 Volume 17 Operating panel 28 Servicing 61 Operating personnel 8 SET-POINT WAIT 37...
- Page 68 Memmert GmbH + Co KG | Postfach 1720 | D-91107 Schwabach | Tel. +49 (0) 9122-925-0 | Fax +49 (0) 9122-145-85 | E-Mail: [email protected] | www.memmert.com 05/2017 CTC/TTC englisch D10804...