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9.3.3 Instruments _____________________________________________________________________  

Where appropriate, instruments should be disassembled before placing them in the autoclave, as this will 
improve the drying results. 
The use of lubricants (such as instrument oil) should be avoided unless absolutely necessary. Prior 
confirmation should be obtained from the manufacturer of such agents that they are in fact suitable for steam 
sterilization. Substances which are hydrophobic or impenetrable for steam can not only lead to poor drying 
results, but may also mean that the steam sterilization is unsuccessful, since not only the instruments are 
protected but also micro-organisms. 
 

9.3.4 

Loading the autoclave ____________________________________________________________  

Textiles and instruments should not be sterilized together in one sterilization container. Textiles and 
instruments in separate sterilization containers should as far as possible not be sterilized in the same load. 
However, where this is unavoidable for economic or other reasons, the following rules should be observed:  

  Instruments and sterilization containers should be placed at the bottom 

  Textiles should always be placed at the top 

  Transparent sterilization packages and paper sterilization packages should be placed at the top 

(except when in combination with textiles, in which case they must be at the bottom). 

 

Loading the autoclave 
 

9.3.5 Loading 

containers 

with 

soft sterilization packing material______________________________  

"Soft“ sterilization packages such as paper bags or transparent sterilization packages can be sterilized either 
in sterilization containers or sterilization baskets. To enable better drying, arrange such soft sterilization 
packages side-by-side and close to each other. This allows condensation to run off the packages, while at 
the same time preventing them from expanded excessively, and possibly bursting at the seams. 
 
 

Packing “soft“ sterilization packages in sterilization containers 

 

 

        

Textiles

Instruments

Instruments

Textiles

Textiles

Textiles

Instruments

Instruments

A

B

 

 

 

 

 

A

B

 

Summary of Contents for Vacuklav 24-B/L

Page 1: ...ilization equipment More than 400 000 MELAG units sold throughout the world testify to the exceptional quality of our sterilizers which are manufactured exclusively in Germany As all other MELAG products this autoclave was manufactured and tested according to strict quality criteria Before placing this unit into operation please read this User Manual carefully The long term functional effectivenes...

Page 2: ...tainer 8 2 7 Connection of a water purification system 8 3 Initial start up 8 3 1 Printer connection Initialisation optional 8 3 1 1 Connecting the MELAprint 42 8 3 1 2 Initialisation of the printer Setting up immediate print out 8 3 2 Vacuum test 9 3 3 Test run 10 3 4 Installation record 10 3 5 Safety instructions 10 4 Instructions for all sterilization procedures 11 4 1 Electricity and water sup...

Page 3: ...sumption 31 7 2 3 Poor drying 31 7 3 Warning messages 32 7 4 Error reports 35 8 Taking care of your autoclave 37 8 1 Preparation of instruments 37 8 2 Rust formation Drag in rust 38 8 3 Taking care of the Vacuklav 24 B L 38 8 3 1 Cleaning 38 8 3 2 Use of demineralised or distilled water 38 8 4 Checking the operation of the autoclave 39 8 4 1 Safety with automatic monitoring 39 8 4 2 Periodical bac...

Page 4: ...lav 24 B L 1 Safety valve 9 Fuses 2 x 16 A FF 2 Sterile filter 10 Power switch 3 Cooling water inlet 3 4 external thread 11 Motor circuit breaker vacuum pump 4 Cooling water outlet 3 4 external thread 12 Sliding door lock 13 Door left side hinge 5 Purified water inlet Swivel connection for 6x1 pipe 14 Control panel 6 Mains power cable 7 Adjustable front feet 8 Serial data and printer port RS 232 ...

Page 5: ...s of the autoclave by running the Bowie Dick Test for steam penetration and the Vacuum Test for leak testing The additional program MELAsteam is available as an option and functions at a temperature of 136 C 1 4 3 Separate steam generation _________________________________________________________ The generation of steam by a high performance unit outside the sterilization chamber makes it is possi...

Page 6: ...st dust The base should be stable and able to support the weight of the appliance unloaded weight 43 kg The space required by the autoclave can be seen by the external dimensions as in Section 1 1 A minimum additional space of 10 cm should be allowed on either side and above the autoclave in order to ensure that heat can escape The electrical power supply should be a separate 230V AC circuit with ...

Page 7: ...them at least seven 7 turns 6 3 2 4 8 9 10 1 7 5 11 210x230 340 Fig 3 Typical installation of the Vacuklav 24 B L with storage container for distilled demineralised water with a wall mounted trap 1 Vacuklav 24 B L rear view 2 Cooling water inlet pipe pressure pipe 3 Cooling water outlet pipe DN16 4 Power connection 5 Water stop cock with safety combination in accordance with DIN 1988 MELAG Art No ...

Page 8: ...el connection The pipe is then fed into the storage container until its other end with the inlet filter reaches the bottom If you use the MELAG storage container MELAG Art No 244 you will find the necessary instructions on the label This container has a volume of 11 5 litres enough for an average of 25 sterilization cycles 2 7 Connection of a water purification system _____________________________...

Page 9: ...tion pressure has been reached The equalisation period begins 6 After waiting for the equalisation 5 min the measuring period starts running here e g for 7min 52s 7 After the measuring period 10 min the chamber is ventilated and then the leakage rate is displayed if the immediate printout option is selected for an attached printer then a record will also be printed After the message Please wait Do...

Page 10: ... claims under warranty provisions 3 5 Safety instructions __________________________________________________ When opening the door particularly after interrupting the drying process residual steam can escape from the autoclave chamber After opening the door do not touch any metal surfaces these will be hot Danger of burns Always use the tray lifter to remove trays or wear suitable hand protectors ...

Page 11: ...e MELAG sterilization containers Type 15K M G Type 17K M G R Type 23M G R Type 28 M G Normally the autoclave should be used in conjunction with a tray rack since this ensures that steam penetration and drying are as good as In exceptional situations e g when using sterilization containers from other manufacturers and after consultation with your specialist dealer or with MELAG the tray rack can be...

Page 12: ...ems being sterilized and in particular their heat resistance and the type of packaging if any part of the load is wrapped then either the Universal Program or the Gentle Program must be used By pressing the Program selection button it is possible to review the display of the following programs for selection Program name Display message Parameter Application Universal progr at 134 C 2 bar and a ste...

Page 13: ...am the warning Warning Not sterilization These messages must be acknowledged by pressing Start again 4 6 Program progress ___________________________________________________ After starting the program it will then progress automatically The display shows the current program status as follows Program status Display message 1 Phase 1 consisting of evacuation removal of air until the appropriate evac...

Page 14: ...rogram the drying phase should be allowed to run to completion 7 Ventilation After the drying the chamber is ventilated with pressure equalisation 8 Program end After ventilation of the chamber the program is completed If a printer is attached and print out yes is selected the record will be printed out immediately After the door has automatically unlocked the door can be opened to remove the ster...

Page 15: ...terilization paper after sterilization small amounts of water on the wrapping are unproblematic provided they have evaporated within 30 minutes after removal from the steam steriliser MELAG Vacuklav 24 B Program Universal program 134 C wrapped Datum 06 04 2000 Uhrzeit 12 16 28 Start Charge Nr 5 Preheating 133 5 C Conductivity 7 S cm Program step Pressure Temperat Time bar C min Start 0 03 70 1 00 ...

Page 16: ...ograms non disinfected Warning Steam may escape when the autoclave door is opened If the sterilization phase of the program had not been completed then it is advisable to carry out an empty sterilization run before reusing the autoclave Operation Display message 1 Press the Start Stop button To confirm press the Start Stop once again within 5 seconds If no confirmation is given then the program re...

Page 17: ...of the autoclave is opened Operation Display message 1 The autoclave is in the drying phase The display shows the drying time alternately with the option to terminate the drying phase 2 Press the Start Stop button To confirm press the Start Stop once again within 5 secs If no confirmation is given then the program resumes normally 3 If the Start Stop button has been pressed again to confirm then t...

Page 18: ..._ In general the door should only be leant to during operational pauses in order to reduce wear on the door seal and to avoid premature failure or sticking In the event of longer breaks such as during vacations the cooling water supply should be turned off and the feed water supply from the water purifier if one is connected We recommend that you do not disconnect the power supply You should howev...

Page 19: ...r memory stores records of the last 40 programs These records can be downloaded at a later stage via the serial interface RS232 When the memory is full 40 program runs then before the start of the next run the oldest record will automatically be overwritten If an external printer is connected and operable and the option Immed print out No has been selected then confirmation will be requested befor...

Page 20: ...transmission Display shows current status e g No printer 5 Press or button until display shows External printer 6 Press Program button Confirm the setting return to Print menu 7 Press Start Stop button return to the Function menu 8 Press Start Stop button Quit the Function menu and return to the initial display Program Start Stop 14 27 12 0 02bar 25 C Program Start Stop Function Print Program Star...

Page 21: ...inter 6 3 2 Immed print out Yes No When an external printer is fully installed a print out can be produced automatically at the end of each program run by selecting the following options after switching on the autoclave Operation Display message 1 Hold down button and also press button Select Function menu sub menu Print 2 Press Program button Select Print menu sub menu File transmission 3 Press b...

Page 22: ...er press the or button until the right number is reached e g here No 25 6 Press Program button to start the print out of the selected record or to terminate press Start Stop and return to the Function menu 7 If you wish to print further records then return to Point 4 or 8 to terminate press Start Stop and return to the Function menu 9 Press the Start Stop button to return to the initial display Pr...

Page 23: ...Program button to start the print out of all the stored records up to 40 or to terminate press Start Stop and return to the Function menu Once printing has started termination is only possibly by switching off the power 5 When the print out is complete the display again shows the submenu 6 Press the Start Stop button to return to the Function menu 7 and then press Start Stop again to return to the...

Page 24: ...ct Function menu submenu Print 2 Press Program button Select Print menu submenu File transmission 3 Press or button until the display shows the memory status e g 4 Press the Start Stop to return to the Function menu 5 and press Start Stop again to return to the starting display Program Start Stop Function Print Program Start Stop Function Print Program Start Stop 14 27 12 0 02bar 25 C Program Star...

Page 25: ...enu submenu Print 2 Press Program button Select Print menu submenu File transmission 3 Press or until the display shows Delete all cycles 4 Press the Program button to delete all records or press Start Stop to terminate 5 Then press Start Stop to return to Function menu 6 and press Start Stop again to return to the starting point Program Start Stop Function Print Program Start Stop Function Print ...

Page 26: ...button Select Print menu submenu File transmission 3 Press or until the display shows Test print out 4 Then press the Program button for a test print out or press Start Stop to terminate 5 Then press Start Stop to return to the Function menu 6 and press Start Stop again to return to the starting position Program Start Stop Function Print Program Start Stop Function Print Program Start Stop 14 27 1...

Page 27: ...ck here for example 17 00 4 by pressing the or button the following options can be selected 5 After finding the required option e g Minute press the Program button and the current value flashes 6 Press or to increase or reduce the value Program Start Stop Function Print Program Start Stop Function Date Time Program Start Stop Date Time Hour 17 Program Start Stop Date Time Year 200 Program Start St...

Page 28: ...g If more adjustment are necessary return to Point 4 and begin again 8 or press Start Stop to return to the Function menu and 9 Press Start Stop again to return to the starting point Program Start Stop Date Time Minute 28 Program Start Stop Function Date Time Program Start Stop 14 27 12 0 02bar 25 C ...

Page 29: ...matic preheating is on The current setting for the automatic preheating can be changed as follows Operation Display message 1 Hold down button and also press button Select Function menu sub menu Print 2 Press or until the display shows the submenu autom preheating 3 Press Program and the display shows the current option here Preheating Yes 4 Pressing the Program button now alternates between the o...

Page 30: ... programs are designed to meet most practical operational needs subatmospheric pulsing heating sterilization pressure release drying and ventilation and to display the parameters of most interest pressure temperature time The operator is responsible for ensuring that the autoclave is not overloaded and that the load is arranged properly to ensure good drying There are two standard options Automati...

Page 31: ...he fuses order two new spare fuses through your dealer MELAG Art No 57590 7 2 2 Excessive water consumption ______________________________________________________ The consumption of distilled or demineralised water will vary depending on the program and the load in the autoclave If much more water is consumed than the amount specified in the Annex see Section 9 2 then you should 1 Check that the a...

Page 32: ...he water level in the container If necessary refill with purified water Check that the intake tube reaches to the bottom of the storage container clean the intake filter Check that the intake tube is free from twists or kinks Check that the height difference between autoclave and water level is not too great max 1 5 metres If you have a MELAdem 47 water purifier Check the water purification system...

Page 33: ...unit in accordance with the manufacturer s instructions After taking the appropriate steps carry out the program start When starting for the first time after exchanging the purified water container or after maintenance of the water purification equipment there may be another report because at first the supply tube and or measuring cell will not have been washed out with fresh pure water Conductivi...

Page 34: ... button twice when you start a program Select Immed print out Yes see Section 6 3 1 3 Delete stored records See Section 6 3 6 if necessary print out all stored cycle records first see Section 6 3 4 In the Data transfer menu select the No printer option see Section 6 3 1 3 The service message is activated after a certain number of loads or a set operating period when a service is due The message ap...

Page 35: ...t gives error reports the cause and possible remedies Warning message Cause Remedy The monitoring time for reaching the evacuation pressure for the individual pressure cycles pressure release or for reaching the minimum drying pressure has been exceeded Check that the door seal and the lip of the opening to the pressure chamber are intact and clean Check that the autoclave is standing properly see...

Page 36: ...n Automatic preheating No and inform your specialist dealer see Section 6 5 The maximum preheating temperature was exceeded If this occurs repeatedly start the autoclave without preheating and inform your specialist dealer The limit deviation for internal analog digital signal conversion has been exceeded If this occurs repeatedly inform your specialist dealer The limit deviation between the two s...

Page 37: ...ture is too large If this occurs repeatedly inform your specialist dealer 8 Taking care of your autoclave 8 1 Preparation of instruments______________________________________________ MELAG non rusting materials All parts of the Vacuklav 24 B L which come into contact with steam are made of non rusting material The autoclave chamber and its door are made of stainless steel pipes carrying steam are ...

Page 38: ...he Vacuklav 24 B L_______________________________________ 8 3 1 Cleaning __________________________________________________________________________ The tray assembly and the autoclave chamber including the contact area of the door gasket and the door opening should be inspected thoroughly at least once a week for signs of damage or soiling If necessary wipe out the autoclave chamber using a lint f...

Page 39: ...ues shown on the display or after its completion by means of the print out 8 4 2 Periodical bacteriological testing twice a year __________________________________________ The German industrial standard DIN 58 946 Part 8 Section 3 2 recommends Periodical testing shall be carried out at the place of installation e g at 6 monthly intervals They shall demonstrate that sterilization is carried out sat...

Page 40: ...Example 1 Example 2 Vacuklav 24 B L rear view Vacuklav 24 B L rear view Double chamber trap Double chamber trap Leak detector with stop valve optional Leak detector with stop valve optional Vorratsbehälter aqua dem aqua dest MELAdem 40 optional Example 3 Example 4 Vacuklav 24 B L rear view Vacuklav 24 B L rear view Double chamber trap Double chamber trap Leak detector with stop valve optional Leak...

Page 41: ...Operational parameters ____________________________________________________________ 9 2 3 1 Programs Operation times Program Operation time without drying Drying time Warm start small load Cold start max load Quick Program 134 C 2bar 15 min 26 min 10 min Universal program 134 C 2bar 26 min 48 min 15 min Gentle program 121 C 1bar 37 min 56 min 20 min Prion Program 134 C 2bar 43 min 65 min 15 min 9 ...

Page 42: ...team condensing on the instruments and containers Formation of condensation on the sterilization container The steam also heats the objects contained in the sterilization containers Condensate forms on the objects being sterilized and some of the condensate drops to the bottom of the sterilization container Formation of condensation on sterilized objects After sterilization during the drying phase...

Page 43: ... textiles on top of each other as this hinders the penetration of steam into the packages of textiles Loading textiles properly When loading sterilization containers with textile items care should be taken to ensure that they retain their vertical orientation but that the items are not squashed together This would prevent the formation of flow channels for air and steam If the packages of textiles...

Page 44: ...r as possible not be sterilized in the same load However where this is unavoidable for economic or other reasons the following rules should be observed Instruments and sterilization containers should be placed at the bottom Textiles should always be placed at the top Transparent sterilization packages and paper sterilization packages should be placed at the top except when in combination with text...

Page 45: ...erilized items However heat transfer from the sterilized objects can evaporate this after the sterilization process has been completed The German standard DIN 58953 Part 7 Section 7 comments on residual moisture on paper bags or transparent sterilization paper after sterilization Small amounts of water on the surface of packages do not represent a cause for concern if they dry completely within th...

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