Ivoclar Vivadent EP5000-G2 - Manual (Page 20)

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5.4 Adjustable parameters and possible value ranges
Symbol Parameter Value range Value range
P Program number P 001–500
B Stand-by temperature 100–700 °C 212–1292 °F
S Closing time (min : sec) 00:18–30:00
Pre-vaccum (min : sec) 01:00–05:00
t➚ Temperature increase rate 10–140 °C/min 18–252 °F/min
T Holding temperature 100–1200 °C 212–2192 °F
H Holding time (min : sec) 00.01–60:00
V1 Vacuum on 0 or 1–1200 °C 0 or 34–2192 °F
V2 Vacuum off 0 or 1–1200 °C 0 or 34–2192 °F
L Long-term cooling 0 or 50–1200 °C 0 or 122–2192 °F
tL Cooling temperature rate 0 or 1–50 °C 0 or 2–90 °F/min
t2➚ Temperature increase rate 2 nd stage 10–140 °C/min 18–252 °F/min
T2 Holding temperature 2 nd stage 100–1200 °C 212–2192 °F
H2 Holding time 2 nd stage (min : sec) 00.01–60:00
V1 2 Vacuum on temp. 2 nd stage 0 or 1–1200 °C 0 or 34–2192 °F
V2 2 Vacuum off temp. 2 nd stage 0 or 1–1200 °C 0 or 34–2192 °F
H V Holding time Vacuum (min : sec) 00:01–60:00
Pre-drying temperature 0 or 100–700 °C 0 or 212–1292 °F
Pre-drying time 00:00-60:00
Automatic plausibility check
The furnace is equipped with an automatic plausibility check function. The parameters
(e.g. T 960 but L 1000) are checked upon each program start. In case of contradictory
parameter combinations, the program stops automatically and the respective error
number is indicated.
List of parameters
In this screen, the arrow keys can be used to navigate within the list (including
program number). An active numeric value can be edited using the – / + keys or the
numeric keypad.
An active symbol parameter can only be changed using the – / + keys.
List of parameters – Two-stage program
TSP – Thermo Shock Protection
Dynamic closing of the furnace head
The TSP function prevents the object from too high of temperatures during the closing
process. For this purpose, the TSP function gauges the temperature of the firing
chamber in the furnace head upon start of the firing program. If required, the closing
path within the set closing time S is adjusted. TSP is only active if no active predrying
has been selected or if the temperature in the firing chamber is too high when the
program is started. In addition, TSP works only if the stand-by temperature of
B = 403 °C / 757 °F required for Ivoclar Vivadent materials is used. The active TSP
function is shown on the display by means of the symbol „TSP“. If programs are started
with a temperature of more than 680 °C / 1256 °F, an error message is produced.
CSP – Cooling Shock Protection
Careful opening of the furnace head
The CPS function protects the dental lab work during the opening process from
cooling too quickly.This is achieved by opening the furnace head in a special
procedure. In this way, tensions within the object can be largely prevented. The selec-
tion of the CSP function is indicated by the symbol „CSP“ in the firing curve screen.
During the opening process with the CPS active, the symbol is blue and flashing.
5.3 Program structure
5.3.1 Firing programs
All the firing programs are equivalent and,
therefore, full-fledged programs. In each program,
all the parameters can be adjusted.
a) Ivoclar Vivadent firing programs for Ivoclar
Vivadent materials
When the furnace is delivered ex works, the
Ivoclar Vivadent firing programs already contain
the recommended material parameter settings.
Moreover, the programs are write-protected.
Consequently, it is not possible to accidentally
overwrite the parameters.
Please refer to the respective program table (list
of parameters) in Chapter 10.
However, the parameters are designed in such
a way that they can be changed or over-
written at any time, if the programs are to be
used for other purposes. Therefore, these
programs are also available as free, individual
programs.
b) Individual firing programs
The individual firing programs (at least 500) can
be programmed freely.
5.3.2 Press programs
a) Ivoclar Vivadent press programs for Ivoclar
Vivadent materials
When the furnace is delivered ex works, the
standard press programs already contain the
recommended material parameter settings.
They cannot be adjusted.
b) Individual press programs
The individual press programs (20) can be
programmed freely.