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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.

SET-POINT WAIT (TH – temperature and humidity, only for CTC

256)

Wait until setpoint temperature and setpoint humidity have been

reached.

Appliance starts the next programme segment only when the

programmed setpoint temperature and programmed setpoint

humidity have been reached, even if the set heating up time has

already elapsed.
Ramp repeat function

The programme entered is repeated after it has run through all

programmed segments.

1-99

= repeats

cont

= endless repeat function

Programme end while maintaining the temperature and humidity

of last programme ramp
Programme end, switching off the heating /cooling function and

humidity

command

ramp

segment

No. 5

end

Segment5

°C

t=time

Delayed

programme start Segment1

command

ramp

segment

No. 1

spwt (t)

Segment2

command

ramp

segment

No. 2

Segment3

command

ramp

segment

No. 3

spwt (tH)

Segment4

command

ramp

segment

No. 4

Fig. 25

Schematic example of the use of ramp segment close commands

Содержание CTC 256

Страница 1: ...OPERATING MANUAL Climatic test chamber CTC 256 Temperature test chamber TTC 256...

Страница 2: ...Fon 49 0 09122 925 0 Fax 49 0 09122 14585 E Mail sales memmert com Internet www memmert com Customer service Fon 49 0 09122 925 128 and 49 0 09122 925 126 E Mail service memmert com For service enqui...

Страница 3: ...rature test chambers have no humidity controller so that the corresponding sections of this manual are not relevant for these device types Other documents to observe for service and repair work see pa...

Страница 4: ...onformity 15 2 8 Designation nameplate 16 2 9 Technical data 17 2 10 Environmental conditions 18 2 11 Connections 18 2 12 Standard accessories 18 3 Delivery Transport and Setting Up 19 3 1 Safety Regu...

Страница 5: ...3 Temperature monitoring and safety equipment 48 7 3 1 Electronic temperature monitoring TWW 48 7 3 2 Automatic temperature monitor ASF 49 7 3 3 Warning messages 51 7 3 4 Safety and monitoring equipm...

Страница 6: ...the accompanying safety regulation Caution is used for information that is important for avoiding damage 1 1 2 Symbols used Prohibition sign forbidding an action Do not tilt appliance Do not lift app...

Страница 7: ...hamber interior to first adjust to room temperature after opening the door or use heat resistant protective gloves Warning After removing covers voltage carrying parts may be exposed You may receive a...

Страница 8: ...quirements and work protection regula tions and train staff accordingly is responsible for ensuring that unauthorised persons have no access to the test chamber is responsible for ensuring that the ma...

Страница 9: ...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 2 This causes the test chamber to switch off Remember that...

Страница 10: ...5 Laptop holder special accessories see page 21 6 Chamber fan 7 Chamber seal 8 Interior for chamber load 9 Fan air filter of cooling unit see page 63 10 USB connection communication inter faces see a...

Страница 11: ...ensation in the interior the appliance has various heating systems low voltage door frame and seal heating contacted via door contacts condensation water outlet pipe heating heated glass sheet and gla...

Страница 12: ...t 25 C 2 3 1 Temperature change rate The temperature change rate K min is the time the appliance needs to heat up from 18 C to 158 C or to cool down from 158 C to 18 C Fig 7 In order to determine the...

Страница 13: ...ming mode on page 35 Integrated week time switch with group function e g each working day see chapter 5 8 3 Week time switch on page 33 Retracting push turn control for simple operation of appliance s...

Страница 14: ...r 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 p...

Страница 15: ...Schwabach limatic Testing Cham CTC TTC 256 AC 400 V 50 Hz rovisions of the directives Machinery Directive 2006 42 EC and revisions onisation of the laws of Member States on the level o prevention ance...

Страница 16: ...er and technical data It is attached to the front of the appliance on the right beneath the interior see page 10 1 2 3 4 5 6 9 8 7 Fig 9 Nameplate 1 Type designation 2 Connected loads 3 Applied standa...

Страница 17: ...ing grates 6 max load per sliding grate kg 25 max load per appliance kg 100 Temperatures min max 42 C 190 C Adjustment precision 42 C 100 C 0 1 C 100 C 190 C 0 5 C Monitoring 50 C 200 C Humidity 10 98...

Страница 18: ...he chamber interior and as a consequence could result in short circuits or damage to electrical parts For this reason sufficient measures should be taken to pre vent large clouds of dust or aggressive...

Страница 19: ...refrigerant circuit The weight of the test chamber is divided asymmetrically since the refrigeration unit is located on the left side 3 2 Delivery The test chamber can be packaged in a cardboard or o...

Страница 20: ...ing The test chamber may only be installed on the floor and never on tables or similar A table could collapse or it could fall off and seri ous injury or death could occur The installation site must b...

Страница 21: ...g vibrations during transport could result in the temperature sensors being moved in their holders in the working chamber Before operating for the first time check the temperature sensors for their co...

Страница 22: ...ig 14 The two rear tanks A1 and A2 are used to col lect condensation water produced during operation The two front tanks B1 and B2 contain fresh water which the test chamber needs to humidify the inte...

Страница 23: ...a maximum of 0 292 Ohm The operator must ensure that the test chamber is operated only on an electrical power system that meets these requirements If necessary you can ask your local energy supply co...

Страница 24: ...tion water tank To do so pull out the tank drawer from the test chamber for CTC climatic test chambers see Fig 16 or open the flap for TTC temperature test chambers 2 Screw open the lids of the conden...

Страница 25: ...ening and closing the door with high and low temperatures The airtight construction of the climate chamber leads to physical effects when opening and closing the doors due to the temperature dependent...

Страница 26: ...e sliding grate is included in the standard delivery The chamber must not be loaded too tightly so that proper air circulation in the working chamber is guaranteed Do not place any of the chamber load...

Страница 27: ...front of the appliance Switching on press the main switch so that it comes out of the appliance Fig 19 Switching off press the main switch so that it retracts back into the appliance Fig 20 Fig 19 Swi...

Страница 28: ...e Fig 22 on page 30 3 Programme mode display see page 35 4 Horn sound for programme end 5 Display appliance is heating up 6 Temperature display 7 Automatic defrosting system active see page 54 8 Displ...

Страница 29: ...ool down to the set temperature 4 Settings for other parameters are made in the same way The control returns automatically to the main menu if the push turn control or SET key is not operated for appr...

Страница 30: ...he SET key and the selected operating mode is saved 5 8 1 Normal mode The test chamber runs in permanent operation in this operating mode at the values set on the operating panel see above Example of...

Страница 31: ...ible see also Fig 5 on page 12 5 8 2 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...

Страница 32: ...elease the SET key The fan is now running at 40 4 Setting the monitoring temperature Turn the push turn control to the right until the monitoring temperature and the MIN or MAX icon flashes Hold down...

Страница 33: ...meters can be selected and altered as described in in chapter 5 6 3 Basic operation on page 29 Weekday Adjustment range Monday to Sunday Mo Tu We Th Fr Sa Su Day groups Adjustment range Working days M...

Страница 34: ...oup and switched off at 18 00 and in addition it should operate on Saturdays from 10 00 14 00 Fig 24 Mo Sa Fr Thu We Tu Su Fig 24 Operation with week time switch example 1 Setting the week time switch...

Страница 35: ...binations 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...

Страница 36: ...t range 1 minute to 999 hours shown in picture duration 1 00 hour loop t3 t4 t2 t1 on off Mo Tu We Th Fr Sa Su 3 4 2 1 STERI DEFRO MIN AUTO MAX C C h PRINT SETUP TERI DEFRO 7 Setpoint temperature temp...

Страница 37: ...SETUP 11 Leave programming write mode EDIT Turn push turn control to the right until EXIT appears in the display and press the SET key briefly to confirm After releasing the SET key a new programme c...

Страница 38: ...have been reached even if the set heating up time has already elapsed Ramp repeat function The programme entered is repeated after it has run through all programmed segments 1 99 repeats cont endless...

Страница 39: ...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 26 Mo 8 00 h 0 45 h 1 00 h 50 C t 37 C 0 01 h 70 rh 50 40 rpm Ramp 1 Ramp 2 Ram...

Страница 40: ...held down Mo 4 Set the clock time for delayed programme start Select the time display with the push turn control Hold down the SET key and set the time to 08 00 AM with the push turn control h 5 Sett...

Страница 41: ...rn control h 11 Setting the temperature of the second ramp segment Turn the push turn control to the right until the tem perature display flashes Hold down the SET key and set the desired temperature...

Страница 42: ...h turn control to the right until the humidity display flashes Hold down the SET key and set the desired humidity setpoint of 50 0 rh with the push turn control rh 19 Setting the close command of the...

Страница 43: ...amber to cool down before open ing the door Warning Depending on operation the surfaces in the chamber interior and the chamber load may be very hot or very cold You could suffer from burns or frostbi...

Страница 44: ...errors Error Possible causes Rectification Nothing shows on display although test chamber is switched on Power supply inter rupted Check power supply Appliance error Contact Customer Service Appliance...

Страница 45: ...red operation is continued with the parameters set The time and the duration of the power failure is documented in the log memory see page 57 In programming mode After a power failure of less than 60...

Страница 46: ...ly and contains the following details Date of printout Period of logging Consecutive page numbers Serial numbers and appliance name By turning the push turn control and holding down the SET key the fo...

Страница 47: ...ish franCAIS ESPANOL und italIANO Compensation correction values CAL 1 3 rh20 RH90 for cali bration of temperature and humidity at customer site Chapter 7 4 Calibration on page 51 Automatic defrosting...

Страница 48: ...st always be set at least 3 K above the maximum working temperature MIN MAX AUTO C 6 5 4 3 1 2 Fig 27 Temperature monitoring display 1 Visual alarm icon Lit up TB alarm Flashing TWW alarm TWB alarm AS...

Страница 49: ...arily switched off until the next alarm event occurs Setting MAX Set temperature t C Controller error Emergency operation Fig 28 Schematic diagram of how the TWW temperature monitoring functions 7 3 2...

Страница 50: ...ASF alarm ASF active ASF active 27 C 23 C C 50 C 25 C t A B C D E AUTO AUTO AUTO Fig 29 Schematic diagram of how the ASF temperature monitoring functions Switching on the automatic temperature monito...

Страница 51: ...high pressure limiter and a low pressure monitor protect the cooling unit from inadmis sible operating pressure When the high pressure limiter is triggered the heaters and seals are switched off and t...

Страница 52: ...alues in the SETUP If the measured reference tem perature is too low the compensation correction value must be set with a negative sign 4 Perform a control measurement with the reference instrument 5...

Страница 53: ...e Setting 1 Set the desired humidity balance point in the SETUP see Chapter 7 2 Basic appliance set tings Setup on page 46 and set the corresponding compensation correction value to 0 0 C 2 With a ref...

Страница 54: ...cooling system The automatic defrosting system can eliminate this formation of ice at chosen intervals of 3 6 12 24 or 48 hours The factory setting is every 12 hours Because of this automatic defrost...

Страница 55: ...the chamber can be optionally equipped with an RS232 serial com munication interface in accordance with German standard DIN 12900 1 or an RS485 interface With the RS232 interface it is possible to con...

Страница 56: ...241 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 Each...

Страница 57: ...log ging time If the power supply is interrupted the time of the power cut and the return of voltage are stored in the controller Reading in the log memory to the PC via USB interface The log data can...

Страница 58: ...reader in the appliance operating panel see Fig 21 on page 28 2 Programme the chamber as described in Chapter 5 7 The chosen settings are written directly to the card and stored on it After the card i...

Страница 59: ...Logging on the MEMoryCard XL memory card When a programme sequence from the chip card is running the humidity and temperature setpoints are continually logged on the memory card These can be read in...

Страница 60: ...inserted the menu item ID LOCK also appears in the SETUP menu see Chapter 7 2 Basic appliance settings Setup on page 46 If the setting is set to ON the test chamber is locked against all alterations o...

Страница 61: ...operating panel the plastic input module and other plastic parts of the chamber with abrasive or solvent based cleaning agents 8 2 Intensive cleaning Cleaning surfaces of the interior that are otherwi...

Страница 62: ...eals fit tightly adjust door if necessary see Chapter 8 4 Check that the condensation water runoff tube Fig 38 at the rear of the chamber interior is not blocked and clean if necessary Every six month...

Страница 63: ...be undone with a jolt 2 Adjust door by turning the eccentric tappet 2 with a screwdriver 3 Tighten the grub screw again The locking plate Fig 40 can also be adjusted 1 Undo screws 1 2 Move locking pl...

Страница 64: ...3 Screw the glass plate back on Make sure that the seal is properly mounted 8 7 Repairs and Service Warning After removing covers voltage carrying parts may be exposed You may receive an electric shoc...

Страница 65: ...e European Parliament and of the EU Council of Ministers This appliance has been brought to market after August 13th 2005 in countries which have already integrated this directive into their national...

Страница 66: ...ing system 47 54 Degree of protection 17 Delayed programme start 35 Delivery 19 Description 10 Design 10 Designation 16 Disposal 65 Disposing of packaging material 19 Door 25 Drip tray 63 E EC Declara...

Страница 67: ...ing 7 Safety regulations 6 Service 64 Servicing 61 SET POINT WAIT 37 Setting parameters 29 Setting Up 19 Setup 46 Standard accessories 18 Storage 65 Storage after delivery 19 Storage space 59 Switchin...

Страница 68: ...Memmert GmbH Co KG Postfach 1720 D 91107 Schwabach Tel 49 0 9122 925 0 Fax 49 0 9122 145 85 E Mail service memmert com www memmert com 05 2017 CTC TTC englisch D10804...

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