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Summary of Contents for Ugin LECTRA PRESS
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Page 1: Table Of Contents
INSTRUCTIONS FOT USE LECTRA PRESS ♦ CONTENTS♦ PAGE TECHNICALS CHARACTERISTICS INSTALLATION AND START UP DESCRIPTION OF REAR PANEL DESCRIPTION OF THE PROGRAMMING UNIT 25 to 30 PARAMETERS OF PORCELAIN FIRING 30-31-32-33 PARAMETERS OF A PRESSING PROGRAM OPERATION OF A PRESSING PROGRAM 34-35 MAINTENANCE –... -
Page 2: Technicals Characteristics
INSTRUCTIONS FOT USE LECTRA PRESS ♦ TECHNICAL CARACTERISTICS♦ Standby temperature 0 – 600°c Pre-drying temperature 0 – 1000°c Pre-drying time 0 – 30 min Number of steps 6 ( Prog Ceram ) Internal Pre-drying 0 – 30 min (Prog. Ceram ) / 0 – 900°c ( Prog. Press ) Heat rise rate 0 –... -
Page 3: Installation And Start Up
INSTRUCTIONS FOT USE LECTRA PRESS ♦ INSTALLATION AND START UP♦ When unpacking the furnace, check that it is in perfect condition and notify the shipper and the supplier of any damage. Remember to have the deliveryman sign the shipping bill, after marking down any reservations you may have, and to confirm the letter by registered mail with acknowledgment of receipt. - Page 4 INSTRUCTIONS FOT USE LECTRA PRESS ♦ REAR PANEL♦ Mains switch ( on / off ) Thermal circuit breaker Socket Socket for connection of vacuum pump Connector for vacuum hose Name plate Connector of pressure Pressure regulator Manometer Printing connection socket...
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Page 5: Description Of The Programming Unit
INSTRUCTIONS FOT USE LECTRA PRESS ♦ DESCRIPTION OF THE PROGRAMMING UNIT ♦ 20 19 15 14 13 11 Diagram of program and operation Check lights Calibration indicator Program number display Firing parameters display Indicator of units display on 5 Vacuum level display... - Page 6 INSTRUCTIONS FOT USE LECTRA PRESS DIAGRAM OF PROGRAM SELECTION AND OPERATION The diagram displays one of two different phases : 1) Program selection phase ( obtained by pressing key P ) In this phase, you select or modify the parameters of a program. The corresponding indicator lights up on the diagram.
- Page 7 INSTRUCTIONS FOT USE LECTRA PRESS CALIBRATION INDICATOR All Ugin’Dentaire furnaces have been subjected to IPTS 68 ( International Practical Temperatue Scale, 1968 ) temperature testing using a Eurotherm 239-type millivolt generator. You can, however, modify the furnace settings by means of digital calibration.
- Page 8 INSTRUCTIONS FOT USE LECTRA PRESS INDICATOR OF PARAMETER UNIT The units for the parameters displayed on 5 are indicated by five lights : Degrees Celsius / degrees Celsius per minute / minute / second / percent vacuum. VACUUM LEVEL DISPLAY This display gives the actual vacuum level inside the furnace, expressed as a percentage from 0 to 99%.
- Page 9 INSTRUCTIONS FOT USE LECTRA PRESS PAUSE KEY This key is only operative while the platform rises. It cancels the pre-drying time and switches to manual override. This enables the operator to set the platform at the desired height and then release it by pressing the Pause key a second time.
- Page 10 INSTRUCTIONS FOT USE LECTRA PRESS PROGRAMMING KEY This key accesses program selection. To enter or change any firing parameters, first press P. Once you have entered the program, press P a second time to “lock” the program selection. 19 and 20 PARAMETERS SEARCH KEYS ▲▼...
- Page 11 Vacuum stop/hold : 0 VACUUM LEVEL : 0 to 99% The programming unit in the Lectra Press furnace with an electronic vacuum gauge. More accurate and dependable than a conventional manometer, this device controls the vacuum level to a tolerance of ±3% of the programmed value.
- Page 12 INSTRUCTIONS FOT USE LECTRA PRESS Hold time with vacuum The VACUUM STOP temperature is higher than the final temperature: a vacuum is maintained for the entire hold time. The vacuum stop temperature is equal to or less than the final temperature, but you programmed a VACUUM HOLD.
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Page 13: Parameters Of A Pressing Program
They are modified using the CL key. ♦ AIR PRESSURE SETTING 3 to 3.5 Bar max ♦ The LECTRA PRESS kiln is equipped with a pneumatic cylinder having a surface area of 8 cm² Just 3.4 Bar pressure is required to produce a pressing force of 27 kg. -
Page 14: Operation Of A Pressing Program
INSTRUCTIONS FOT USE LECTRA PRESS ♦ CALLING UP A PRESSING PROGRAM♦ When you enter a program number equal or higher than 90 ( using the CL key followed by the two digit keys ), the firing parameter display 5 shows the blinking message “PRES”... - Page 15 INSTRUCTIONS FOT USE LECTRA PRESS 10. The temperature rises to the FINAL TEMPERATURE at the programmed heating rate. 11. Start-up, then adjustment of the VACUUM LEVEL. 12. HOLD TIME, when the final temperature has been reached. 13. The screw lowers and pressing begins ( lasts 7 minutes, with “PRESS” indicator light lit ).
- Page 16 LECTRA PRESS ♦ MAINTENANCE AND GENERAL CARE ♦ MAINTENANCE Aside from cleaning the outside, LECTRA PRESS furnace maintenance entails only two other operations: • Cleaning the platform sealing joint regularly with alcohol. • Replacing the muffle after 3000 hours of service .
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Page 17: Protections
OVERVOLTAGE PROTECTION In furnace equipped with microprocessors, the power supply must be perfectly filtered. The Lectra Press furnace is protected against over-voltage by a system of active and passive filters. However, very high over-voltage may lead to errors in program data. -
Page 18: Secondary Parameters
INSTRUCTIONS FOT USE LECTRA PRESS ♦ SECONDARY PARAMETERS♦ You can also modify a second series of parameters. These parameters concern certain technical settings in the furnace that are not directly related to the firing functions. To access, put the platform on the lowest position Standby, then press the 18 and 20 cursors simultaneously for 5 seconds. -
Page 19: Trouble Shooting
INSTRUCTIONS FOT USE LECTRA PRESS ♦ TROUBLE SHOOTING ♦ SIMULTANEOUS DISPLAY OF FAILURE TYPE AND BUZZER CALLING FOR OPERATION ACTION • dF CHANEL Control malfunction : press “P” to stop the buzzer, then contact your after sales service. • dF PRES Compressed malfunction : press “P”... -
Page 20: Silver Test
INSTRUCTIONS FOT USE LECTRA PRESS ♦ SILVER TEST♦ Choose a program (between 00 and 89 ) Set the program number as follows • Low temperature 600°c • Dry time • Internal pre-drying • Heat rise 50°c/min • Vacuum start •...
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