6139765 - sironasupport.com...4.2 Installation of the heating elements CAUTION Risk of short circuit! When installing the heating elements, it is essential to make sure that the screws,

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Sirona Dental Systems GmbHinFire HTC

61 39 765 D 34972 D 3497.031.01.03.02 11.2006


Contents

1 General information ................................................... 5

1.1 Structure of the documents .............................. 5

1.2 Warranty ........................................................... 5

2 Preparations for installation...................................... 7

3 Installation................................................................... 9

4 Extended installation ................................................. 11

4.1 Opening the cover of the furnace chamber ...... 11

4.2 Installation of the heating elements .................. 11

4.3 Installation of the thermocouple ....................... 13

4.4 Placing the thermocouple in the furnace chamber 15

4.5 Closing the furnace chamber ........................... 16

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General informationSirona Dental Systems GmbHinFire HTC

1 General information

Please read these operating instructions completely and follow them exactly. always keep them within easy reach.

1.1 Structure of the documents

Structure of the documents

The symbols and character formats used in the present manual have the fol-lowing meaning:

1.2 Warranty

To safeguard your warranty claims, please complete the attached Installation Report / Warranty Passport when the system is handed over. Then fax it to the specified fax no.

CAUTION Be sure to observe all warnings!Please observe the warning and safety information provided to prevent per-sonal injury and material damage. Any such information is highlighted by a signal word, i.e. WARNING, CAUTION or NOTE.

WARNING Identifies warnings where there is a medium risk of persons being injured if the warning is not observed.

CAUTION Identifies safety information where the following dangers exist if the informa-tion is not observed: Low risk of personal injury, material damage or damage to the product.

NOTE AssistanceIdentifies additional information, hints and tips.

Prerequisite

Action

or

1., 2., …

Result

Requests you to do something.

See chapter on "General infor-mation". [ 5]

Identifies a reference to another text pas-sage.

List Identifies a list.

Highlighted text Identifies commands or menu items.

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General information Sirona Dental Systems GmbHinFire HTC

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Preparations for installationSirona Dental Systems GmbHinFire HTC

2 Preparations for installationExplanation The following work steps must be performed prior to the installation.

Additional work steps are also required when performing an extended instal-lation.

Preparation 1. Place the unit as close as possible to the designated installation site.

2. Connect the unit to the power supply system.

3. Switch the unit on.

The furnace door automatically moves down.

4. Remove the transport safety device from the furnace chamber.

Supplement for extended installati-on (installing the heating elements)

1. Switch the unit off.

2. Disconnect the unit from the power supply system.

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Preparations for installation Sirona Dental Systems GmbHinFire HTC

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InstallationSirona Dental Systems GmbHinFire HTC

3 InstallationExplanation The installation of the door insulation is described here.

Installation

1. Insert three ceramic tubes (A) in the outer holes of the base support (C).

2. Insert three guide tubes in the holes of the door insulation from below (B).

3. Place the door insulation on the base support.

The ceramic tubes are inserted in the supporting stone. The lower part is now fully assembled.

AC

B

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Installation Sirona Dental Systems GmbHinFire HTC

4. Place the entire door insulation in the furnace opening (picture shows door insulation with sintering tray on top and crucible fork in between). The handle of the crucible fork must point forward.

NOTE For units supplied without preinstalled heating elements, the extended instal-lation [ 11] still must be performed.

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Extended installationSirona Dental Systems GmbHinFire HTC

4 Extended installationExplanation The extended installation is described here if the inFire HTC furnace still must

be equipped with the heating elements and the thermocouple.

4.1 Opening the cover of the furnace cham-ber

The furnace door is open; the furnace is switched off and disconnected from the power supply.

1. Unscrew the Torx screws (A) with contact washers from the furnace cover (B).

2. Push cover (B) toward the front.

The upper part of the furnace chamber is now exposed. The empty holes for the heating elements (C) are visible.

4.2 Installation of the heating elements

CAUTION Risk of short circuit!When installing the heating elements, it is essential to make sure that the screws, stranded ribbon cables and clamps used in the heating circuit do not cause a short circuit.

CAUTION Breaking risk!The heating elements are extremely brittle and fragile. Handle these ele-ments with utmost care. A broken heating element cannot be replaced free of charge!

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Extended installation Sirona Dental Systems GmbHinFire HTC

1. Carefully place the heating elements (G) with screws in the holes toward the outside.

2. Plug the matching stranded ribbon cables (H) onto the two heating ele-ments located next to the cable lugs of the heating current cable connec-tions (see illustration!).

3. Screw the stranded ribbon cables securely onto the cable lugs.

NOTE Risk of short circuitThe screw heads (I) must be located opposite each other to reduce the risk of a short circuit.

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4. Connect the heating elements to the matching stranded ribbon cables (J).

5. Fasten the stranded ribbon cables with the supplied clamps (K).

6. Check the heating circuit for a possible short circuit.

The heating circuit is now completely installed.

NOTE Alignment of the standed ribbon cablesMake sure that the cable lugs of the individual ribbon cables point to the in-side!

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4.3 Installation of the thermocouple

Explanation The procedure for installing the thermocouple on the installation plate provi-ded for that purpose is described here.

The installation plate is attached to the furnace with a cable tie during trans-port.

Installation

1. Cut off cable tie M, i.e. the one fastening the installation plate (L) to the fur-nace.

2. Remove the cut cable ties.

3. Carefully screw the thremocouple (N) down tight onto the installation pla-te.

4. Screw the red and the white cable onto the thermocouple. Note the co-lor! Red connects to "+" and white connects to "-".

ATTENTION Risk of charringThe cut cable ties could be charred if left in the furnace.

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4.4 Placing the thermocouple in the furnace chamber

Positioning

1. Place the insulating plate shown in the illustration (O) on top of the upper part of the furnace chamber so that the holes in the insulating plate line up with the ones in the furnace chamber.

2. Insert the thermocouple through the holes in the insulating plate and the furnace chamber, being careful not to tilt it.

3. Push the legs of the mounting plate through the insulating plate and into the upper part of the furnace chamber. The mounting plate must be pu-shed in until it contacts the insulating plate.

The upper part of the furnace chamber is now fully assembled.

Check CAUTION Incorrect readings!

Inaccurate positioning of the thermocouple can result in incorrect readings.The thermocouple must protrude 30mm ± 3mm into the furnace cham-ber!

Check its position in the furnace chamber with a suitable measuring tool.

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4.5 Closing the furnace chamber

1. Push the cover (B) towards the rear. At the front, the cover slides under-neath an angle bracket (R) which holds it in place.

2. Screw the torx screws (A) with contact washers securely into the furnace cover (B).

The extended installation is now complete.

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6139765 - sironasupport.com...4.2 Installation of the heating elements CAUTION Risk of short circuit! When installing the heating elements, it is essential to make sure that the screws,