Ivoclar-vivadent EP 600 Combi User Manual download pdf (Page 28)

7.3 Menu "Access alarm table"

In this menu, up to 20 of the last alarm

messages are listed in a table. In case of

inquiries, please provide the service

technician with this information.

The enclosed error list contains

further information.

7.4 Menu "Diagnostic programs"

– Vacuum and system test

The program checks the ﬁnal value (in

mbar) that the vacuum reaches after a

deﬁned period of time and how much

time passes until 50 mbar are reached.

– Muffle test

By measuring the maximum power

consumption of the heating muffle, the

'age' of the heating muffle is determined

and presented by a bar diagram. If the

muffle has a high power consumption

(good, new), the bar is solid. At a certain

stage, the user is informed that the

heating muffle has to be replaced shortly.

– Keypad test

If the user conducts this test, all the keys

are represented on the display by a

matching symbol. Pressing the

corresponding key results in the symbol

of the display being inverted to change

to non-inverted (depending on the actual

condition.

F1 is not represented, since this key

is used to quit the menu.

– Display test

The test merely presents a certain pattern

(e.g. chessboard pattern: inverted /

non-inverted) so that the user may check

for defective pixels.

– Press drive test

Automatic check of the press drive.

Possible malfunctions are pointed out.

7.5 Temperature calibration

The accuracy of the thermocouple changes

during use. In order for it to function

optimally, it needs to be recalibrated on a

regular basis. The automatic furnace

calibration set (Automatic Temperature

Checking Set 1) has been especially

developed for this purpose. We recommend

that you check your furnace with the

Automatic Temperature Checking Set 1 after

approximately 50 press cycles or after 3 to 4

months of use. The corresponding message

will be displayed. Calibration should be

conducted while the furnace is at operating

temperature (stand-by temperature). It takes

approx. 2 hours. For that reason, we

recommend that you calibrate the furnace

overnight in order to save time.

Important information

The automatic request for

calibration after 50 press cycles is

only displayed in the "Press

furnace" mode. If the furnace is in the

"Ceramic furnace" mode, the message will

not appear after 50 ﬁring cycles. However,

we recommend conducting a calibration

after approx. 3-4 months if the furnace is in

frequent use.

1. Insert the melting sample (122) in the

ceramic base block (121).

2. Screw the sample (122) to the contact

pins (123).

Important

Do not use tongs. Tighten until

barely ﬁngertight.

3. Go to "Miscellaneous" and select

calibration program. Now the furnace

head opens.

4. Remove the ﬁring plate (50) from the

furnace with the ﬁring tongs and place it

on the sagger tray.

5. Use tongs to insert the completed test

assembly into the recesses for the ATK 1

(124).

6. Place the tongs at the center of the test

assembly and press lightly until it

perceptibly clicks into place.

7. Start the calibration program.

8. At the end of the program, remove the

test assembly from the furnace using the

tongs and allow it to cool.

Contraindication

Under no circumstances should you

pull on the test sample. The ceramic

base will break as a consequence.

9. Replace the ﬁring plate (50) and select a

ﬁring program. The furnace head will

close automatically.

10. Once the sample assembly has cooled,

take it apart.

11. Use new melting samples for the next

calibration procedure and begin with

step 1.

123

121

122

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Ivoclar-vivadent EP 600 Combi User Manual Page 28

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