Nabertherm L 3/11, L 5/11, L 9/11, L 15/11, L 24/11 Instruction Manual

...

Operating Instructions

Laboratory Furnaces (Muffle Furnaces)

L / LE / LT / LV / LVT -SKM -SW -HA

-> 10.2005

Original instructions

www.nabertherm.com

 Made

 in

 Germany

 Copyright by Nabertherm GmbH Bahnhofstrasse 20 28865 Lilienthal Federal Republic of Germany

Reg: M01.0032 ENGLISCH Rev: 2011-01

No responsibility is accepted for the correctness of this information. We reserve the right to make technical alterations.

1 Introduction ........................................................................................................................................................... 5

1.1 Product Description ........................................................................................................................................... 6

1.2 Overview of the Complete Oven ....................................................................................................................... 7

1.3 Key to the Model Names ................................................................................................................................... 9

1.4 Scope of Delivery ............................................................................................................................................ 10

2 Specifications ....................................................................................................................................................... 11

2.1 Warranty and Liability .................................................................................................................................... 16

3 Safety .................................................................................................................................................................... 17

3.1 Intended Use.................................................................................................................................................... 17

3.2 Requirements for the Oven Operator .............................................................................................................. 18

3.3 Requirements for the Operating Personnel ...................................................................................................... 19

3.4 Protective Clothing .......................................................................................................................................... 19

3.5 Basic Measures During Normal Operation ..................................................................................................... 20

3.6 Basic Measures in Case of Emergency ........................................................................................................... 20

3.6.1 What to do in an Emergency ....................................................................................................................... 20

3.7 Basic Measures for Servicing and Maintenance.............................................................................................. 21

3.8 Environmental Regulations ............................................................................................................................. 22

3.9 Explanation of the Symbols and Warnings ..................................................................................................... 23

3.10 General Risks with the Oven ........................................................................................................................... 26

4 Transportation, Installation, and Commissioning ............................................................................................ 27 

4.1 Delivery ........................................................................................................................................................... 27

4.2 Unpacking ....................................................................................................................................................... 30

4.3 Transportation Securing Equipment/Packaging .............................................................................................. 31

4.4 Constructional and Connection Requirements ................................................................................................ 32

4.4.1 Installation (Oven Location) ....................................................................................................................... 32

4.5 Assembly, Installation, and Connection .......................................................................................................... 33

4.6 Assembly of a Vent ......................................................................................................................................... 33

4.6.1 Waste Gas System ...................................................................................................................................... 35

4.6.2 Connecting the Oven to the Power Supply ................................................................................................. 36

4.6.3 Insertion of the Base Plate .......................................................................................................................... 39

4.7 Commissioning ............................................................................................................................................... 41

4.8 Recommendations for Heating the Oven for the First Time ........................................................................... 41

4.9 Loading/charging ............................................................................................................................................ 42

5 Operation ............................................................................................................................................................. 44

5.1 Operating Controller B 180/P 330 ................................................................................................................... 44

5.2 Operating Controller R 6 ................................................................................................................................. 45

5.3 Over-Temperature Limit Controller with Manual Reset and Adjustable Cut-Off Temperature ..................... 46

5.4 Air Inflow Lever ............................................................................................................................................. 47

6 Servicing, Cleaning, and Maintenance .............................................................................................................. 48

6.1 Shutting the system down for maintenance ..................................................................................................... 49

6.2 Regular Maintenance of the Oven ................................................................................................................... 50

6.3 Operating and Auxiliary Materials .................................................................................................................. 50

6.4 Cleaning Products ........................................................................................................................................... 50

7 Faults .................................................................................................................................................................... 52

7.1 Replacing a Fuse ............................................................................................................................................. 53

7.2 Separate the Snap-In Coupling (Plug) from the Furnace Housing .................................................................. 54

8 Spare Parts/Wearing Parts ................................................................................................................................. 55

9 Nabertherm Service ............................................................................................................................................ 56

10 Electrical Connections (Circuit Diagram) ......................................................................................................... 56

11 Shut-Down, Dismantling, and Storage............................................................................................................... 57

11.1 Environmental Regulations ............................................................................................................................. 57

11.2 Transportation/Return Transportation ............................................................................................................. 58

12 Declaration of Conformity .................................................................................................................................. 59

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1 Introduction

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Dear Customer,

Thank you for choosing a quality product from Nabertherm GmbH.

You can be proud that you have chosen an oven which has been especially tailored to suit your manufacturing and production conditions.

This product is characterized by

 professional workmanship  high performance due to its high efficiency  high-quality insulation  low power consumption  low noise level  simple installation  easy to maintain  high availability of spare parts

Your Nabertherm Team

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Note

These documents are intended only for buyers of our products and may not be copied or disclosed to third parties without our written consent.

(Law governing copyright and associated protective rights, German Copyright Law from Sept. 9, 1965)

Protective Rights

Nabertherm GmbH owns all rights to drawings, other documents and authorizations, also in case of applications for protective rights.

Note

All the figures in the instructions have a descriptive character; in other words, they do not represent the exact details of the oven.

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1.1 Product Description

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These laboratory furnaces are a high-quality product which will give you many years of reliable service if they are properly cared for and maintained. One basic prerequisite is that the furnace is used the way it was designed to be used.

During development and production a high priority was placed on safety, functionality and economy.

Laboratory Furnaces are attractive thanks to their many advantages. These furnaces are all-rounders for research and laboratory applications. They are made from expertly finished, high-quality materials and are easy to operate. These furnaces are optimally designed for incinerating and heat treatment. The very best insulation materials permit energy-saving operation and fast heating times thanks to low heat storage and thermal conductivity. Laboratory furnaces attain furnace chamber temperatures of max. 1100 °C (2012 °F), 1200 °C (2192 °F) or 1300 °C (2372 °F).

Other characteristics of this product are:

 All the models have a high-quality, multi-layered and energy-saving thermal

 Double-wall housing means low outer temperatures and solid stability. All

 Good temperature uniformity provided by special air supply and exhaust system

 There are furnaces with drop-down doors or lift doors  Ceramic heating plates with integrated heating wire, protected against splattering

 Model L/LT …/…/SW with scale and software (Controltherm MV) for annealing

 All the models are equipped with a controller which provides considerable safety

Additional Equipment

 Vent, vent with fan or catalytic converter.  Over-temperature limit controller with adjustable shut-down temperature for

 Manual or automatic protective gas system Protective gas connection on the back

 Digital interface RS 422, for example, for process control and documentation

 Base plates and catch basins to protect of the furnace and to enable easy charging  Rectangular container, stackable for charging on several levels

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insulation

furnaces have housings made of textured stainless steel sheet.

for models LV/LVT .../… and LT …/…HA. For models LV/LVT .../… the system delivers more than 6 air changes a minute. The incoming air is pre-heated, so that a good temperature uniformity is ensured.

and exhaust-air for models L/LT …/… and LV/LVT .../…

loss specifications

against operator mistakes. The furnace chamber temperature is measured and regulated by a long-life thermocouple (NiCr-Ni Tmax < 1100 °C or PtRh-Pt Tmax > 1100 °C).

thermal protective class 2 as specified in EN 60519-2 to protect the furnace and the ware against overheating.

side of the furnace

provided by Controltherm MV software package.

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1.2 Overview of the Complete Oven

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Furnace door

Handle

Air for the regulation of fresh air

Furnace chamber

Display

Exhaust-air system

Display

Controller

Power switch (ON/OFF)

Controller

Power switch (ON/OFF)

Heating (ON/OFF)

Gas supply system (additional equipment)

Vent, vent with fan or catalytic converter (accessories)

Support plate in the furnace chamber

Ceramic die

Support die

Scale

Backup power connection (lock for backup power connection) for example, for vent with fan or gas supply system (additional equipment)

Fig. 1: Example: Complete overview of various laboratory furnaces

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Digital interface RS 422 (option)

Power line

Lock

Switchgear fan

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1.3 Key to the Model Names

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Example Explanation LT 9/11SKM

LT 9/11SKM

L = Laboratory furnace with drop-down door LE = Laboratory furnace economy series LT = Laboratory furnace with lift door LV = Laboratory incinerator with drop-down door LVT = Laboratory incinerator with lift door

1 = 1-liter furnace chamber (volume in L) 2 = 2-liter furnace chamber (volume in L) 3 = 3-liter furnace chamber (volume in L) 4 = 4-liter furnace chamber (volume in L) 5 = 5-liter furnace chamber (volume in L) 6 = 6-liter furnace chamber (volume in L) 9 = 9-liter furnace chamber (volume in L) 14 = 14-liter furnace chamber (volume in L) 15 = 15-liter furnace chamber (volume in L) 24 = 24-liter furnace chamber (volume in L) 40 = 40-liter furnace chamber (volume in L)

11 = Tmax 1100 °C (2012 °F) 12 = Tmax 1200 °C (2192 °F) 13 = Tmax 1300 °C (2372 °F)

HA = Laboratory furnace with recirculating air fan in the back wall SKM = Furnace chamber made of ceramic muffle SW = Scale furnace with support frame and scale

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LT 9/11SKM

LC011H6SN 1100 °C 2011

230 V 1/N/PE~ 15.2 A 50/60 Hz 3.5 kW

www.nabertherm.de Made in Germany

Fig. 2: Example: Model designation (type plate)

SN xxxxxx

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1.4 Scope of Delivery

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The scope of delivery includes:

Furnace components Quantity Comment

Laboratory furnace 1) 1 x Nabertherm GmbH Power cable 1)

1 x Nabertherm GmbH

Vent ) 2)

1 x Vent with fan 1) 2) Catalytic converter 1) 2)

Ceramic ribbed plate

4) Ceramic ceramic catch basin Steel catch basin

Gas supply system 2)

1 x Nabertherm GmbH

Scale 2)

1 x Nabertherm GmbH

Process documentation

B e

t r

s a

n l

e i

Controltherm MV software package 1) 2)

P r

o z e

s s d

k u

m e

n t

a t

o n t

r m

1 x Nabertherm GmbH

a d

e i

n G

e r

n y

Other components, variable depending on the particular furnace

- - - Consult the shipping papers

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Document type Quantity Comment

Instruction Manual Laboratory Furnace 1) 1 x Nabertherm GmbH Operating Instructions for Controller 1) 1 x Nabertherm GmbH Operating Instructions

1 x Nabertherm GmbH

gas supply system 1) Operating Instructions

1 x Nabertherm GmbH

Controltherm MV software package 1)

Other documents, variable depending on

- - -

the particular furnace

1) = in scope of delivery depends on design/furnace model

2) = in scope of delivery depend on need, see shipping papers

3) = quantity depends on furnace model

4) = quantity depends on on need, see shipping papers

Caution

Make sure that all documents are carefully stored. All the functions of this furnace were tested during manufacturing and prior to shipping.

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2 Specifications



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Muffle Furnace

Electrical specifications are on the type plate located on the side of the oven.

Model Drop-Down Door

Tmax °C

Dimensions Interior in mm w d h

Dimensions Outer in mm W D

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

L 3/11 1100 160 140 100 380 370 420 3 1.2 20 60 L 5/11 1100 200 170 130 440 470 520 5 2.4 35 60 L 9/11 1100 230 240 170 480 550 570 9 3.0 45 75 L 15/11 1100 230 340 170 480 650 570 15 3.6 55 90 L 24/11 1100 280 340 250 560 660 650 24 4.5 75 95 L 40/11 1100 320 490 250 600 790 650 40 6.0 95 95

L 1/12 1200 90 115 110 250 265 340 1 1.5 10 25 L 3/12 1200 160 140 100 380 370 420 3 1.2 20 75 L 5/12 1200 200 170 130 440 470 520 5 2.4 35 75 L 9/12 1200 230 240 170 480 550 570 9 3.0 45 90 L 15/12 1200 230 340 170 480 650 570 15 3.6 55 105 L 24/12 1200 280 340 250 560 660 650 24 4.5 75 110 L 40/12 1200 320 490 250 600 790 650 40 6.0 95 110

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

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Muffle Furnace Model

Lift Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LT 3/11 1100 160 140 100 380 370 420+165 3 1.2 20 60 LT 5/11 1100 200 170 130 440 470 520+220 5 2.4 35 60 LT 9/11 1100 230 240 170 480 550 570+290 9 3.0 45 75 LT 15/11 1100 230 340 170 480 650 570+290 15 3.6 55 90 LT 24/11 1100 280 340 250 560 660 650+335 24 4.5 75 95 LT 40/11 1100 320 490 250 600 790 650+335 40 6.0 95 95 LT 3/12 1200 160 140 100 380 370 420+165 3 1.2 20 75 LT 5/12 1200 200 170 130 440 470 520+220 5 2.4 35 75 LT 9/12 1200 230 240 170 480 550 570+290 9 3.0 45 90 LT 15/12 1200 230 340 170 480 650 570+290 15 3.6 55 105 LT 24/12 1200 280 340 250 560 660 650+335 24 4.5 75 110 LT 40/12 1200 320 490 250 600 790 650+335 40 6.0 95 110

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. opened lift door

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Muffle Furnace Model

Drop-Down Door

Tmax °C

Dimensions Interior in mm w d h

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

L 5/13 1300 200 170 130 440 470 520 5 2.4 45 45 L 9/13 1300 230 240 170 480 550 570 9 3.0 50 50 L 15/13 1300 230 340 170 480 650 570 15 3.6 60 60

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

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Muffle Furnace Model

Lift Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LT 5/13 1300 200 170 130 440 470 520+220 5 2.4 42 45 LT 9/13 1300 230 240 170 480 550 570+290 9 3.0 60 50 LT 15/13 1300 230 340 170 480 650 570+290 15 3.6 70 60

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. opened lift door

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Compact Muffle Furnace Model

Drop-Down Door

Tmax °C

Dimensions Interior in mm w d h

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LE 1/11 1100 90 115 110 250 265 340 1 1.5 10 10 LE 2/11 1100 110 180 110 275 380 350 2 1.8 10 25 LE 4/11 1100 170 200 170 335 400 410 4 1.8 15 35 LE 6/11 1100 170 200 170 510 400 320 6 1.8 18 35 LE 14/11 1100 220 300 220 555 500 370 14 2.9 25 40

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

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Incinerator Model

Drop-Down Door

Tmax °C

Dimensions Interior in mm w d h

Dimensions Outer in mm W D Hb+2)

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LV 3/11 1100 160 140 100 380 370 750 3 1.2 20 120 LV 5/11 1100 200 170 130 440 470 850 5 2.4 35 120 LV 9/11 1100 230 240 170 480 550 900 9 3.0 45 120 LV 15/11 1100 230 340 170 480 650 900 15 3.6 55 120

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. exhaust air pipe (Ø 80 mm)

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Incinerator Model

Lift Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D Hb+2)

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LVT 3/11 1100 160 140 100 380 370 750 3 1.2 20 120 LVT 5/11 1100 200 170 130 440 470 850 5 2.4 35 120 LVT 9/11 1100 230 240 170 480 550 900 9 3.0 45 120 LVT 15/11 1100 230 340 170 480 650 900 15 3.6 55 120

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. exhaust air pipe (Ø 80 mm)

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Muffle Furnace Model

Drop-Down Door/ Lift Door

Tmax °C

Dimensions Interior in mm w d h

Dimensions Outer in mm W D H+Ha 2)

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

L 9/11/SKM 1100 230 240 170 480 550 570 9 3.0 50 90 LT

1100 230 240 170 480 550 570+290 9 3.0 50 90

9/11/SKM

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. opened lift door

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Muffle Furnace Model

Drop-Down Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

L 9/11/SW 1100 230 240 170 480 550 800 9 3.0 55 75 L 9/12/SW 1200 230 240 170 480 550 800 9 3.0 55 90

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

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Muffle Furnace Model

Drop-Down Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LT 9/11/SW 1100 230 240 170 480 550 800+290 9 3.0 55 75 LT 9/12/SW 1200 230 240 170 480 550 800+290 9 3.0 55 90

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. opened lift door

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Scale Type Readability

in g

Weight Range

in g

Stamp Weight

in g

Calibratio

n Value

in g

Minimum

Load

in g

EW-1500 0.01 1500 incl. stamp 850 0.1 0.5 EW-3000 0.01 1500 incl. stamp 850 0.1 0.5 EW-6000 0.10 1500 incl. stamp 850 1.0 5.0

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Muffle Furnace Model

Lift Door

Tmax °C

Dimensions Interior in mm w d

Dimensions Outer in mm W D H

Volume in l

Capacity kW max.

Weight kg

Minutes to Tmax 1)

LT 5/11HA 1100 200 160 130 440 470 520+220 5 2.4 36 60 LT 9/11HA 1100 230 230 170 480 550 570+290 9 3.0 46 60 LT 15/11HA 1100 230 330 170 480 650 570+290 15 3.6 56 75

1) = for connection to 230 V 1/N/PE or 400 V 3/N/PE

2) = incl. opened lift door

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Fig. 3: Dimensions

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Electrical connection

Model:

Power plug

1-phase: (1 N/PE) 3-phase: (3 N/PE)

to 3.6 kW from 4.5 kW

Protective contact plug

(with snap-in socket)

CEE plug

Voltage:

110 V – 240 V

380 V – 480 V

220 V – 240 V

Frequency: 50 or 60 Hz

Thermal protection class

Protective type Ambient conditions for electrical

equipment

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Emissions

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Heating output in kW: see section "Specifications" or type plate on the

furnace

Furnaces:

as specified in DIN EN 60519-2

without safety controller Class 0

Furnaces: IP20

Temperature: Humidity: +5 °C to + 40 °C max. 80 % not

condensing

Continuous sound pressure

< 80 dB(A)

level:

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2.1 Warranty and Liability

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As regards warranty and liability, the normal Nabertherm warranty terms apply, unless individual terms and conditions have been agreed. However, the following conditions also apply:

Warranty and liability claims for personal injury or damage to property shall be excluded if they are attributable to one or more of the following causes:

 Everyone involved in operation, installation, maintenance, or repair of the oven

must have read and understood the operating instructions. No liability will be accepted for damage or disruptions to operation resulting from non-compliance with the operating instructions.

 Not using the oven as intended,

 Improper installation, start-up, operation, or maintenance of the oven,

 Operation of the oven with defective safety equipment or improperly installed or

non-functioning safety and protective equipment,

 Not observing the references in the operating instructions to transportation,

storage, installation, start-up, operation, maintenance, or equipping the oven,

 Making unauthorized changes to the oven,

 Making unauthorized changes to the operating parameters,

 Making unauthorized changes to the parameterization, the settings, or the program,

 Original parts and accessories are designed especially for Nabertherm ovens.

Replace parts only with original Nabertherm parts. Otherwise the warranty will be void. Nabertherm accepts absolutely no liability for damage caused by using parts that are not original Nabertherm parts.

 Catastrophes due to third-party causes and force majeure.

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3 Safety

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3.1 Intended Use

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This Nabertherm system was designed and manufactured after careful selection of the harmonized standards to be observed as well as other technical specifications. It therefore corresponds to the state of the art, ensuring the highest possible degree of safety.

Only materials with known characteristics and melting temperatures may be used. Check the material safety data sheets if necessary.

Use of the furnace for any other purpose whatsoever such as processing products other than those intended or handling hazardous substances or substances posing a health hazard constitutes improper use and must be agreed upon with Nabertherm in writing.

Whether or not the materials used in the furnace can potentially corrode or destroy the insulation or heating elements must be ascertained.

For furnaces with over-temperature limit controllers, the cutoff temperature must be set to prevent overheating of the material.

Modifications to system equipment must be agreed upon with Nabertherm in writing. It is not permitted to remove, bypass, or shut down safety devices.

The installation instructions and safety guidelines must be observed. Otherwise, the furnace will not be considered as being used as designated, and all claims against Nabertherm GmbH will be void.

Opening the furnace when hot (temperature greater than 200/392 °C/°F) can lead to accelerated wear of the following components: insulation, heating elements, and furnace housing.

Operating with power sources, products, operating equipment, additives, etc. that are subject to the Ordinance on Hazardous Substances or cause risks to the health of operating personnel in any way is not permitted.

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- This furnace is designed for commercial use. The furnace must not be used

for heating food, animals, wood, grain, etc.

- The furnace must not be used as a workplace heater.

- Do not use the furnace to melt ice or similar materials.

- Do not use the furnace as a clothes dryer.

Note

See safety instructions in the individual sections.

Note

The oven must not be operated with explosive gases or mixtures and it must be ensured that explosive gases or mixtures do not form during the process.

This oven has no safety technology for processes in which ignitable mixtures could form,

e.g. debinding.

If the oven is to be used for such processes, the concentration of organic gases must never exceed 3% of the lower explosive limit (LEL) in the oven. This requirement not only applies to normal operation, but also especially to exceptions, such as process faults (e.g. due to the failure of a unit, etc.).

Nabertherm offers a wide range of ovens and furnaces that were especially developed for processes with ignitable gases.

Note

This product does not

comply with the ATEX Directive and may not be used in ignitable

atmospheres. It must not be operated with explosive gases or mixtures or during processes where explosive gases or mixtures are produced.

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3.2 Requirements for the Oven Operator

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The set-up instructions and safety regulations must be followed, otherwise the oven will be deemed to have been used improperly, effectively cancelling any claims against Nabertherm GmbH.

This level of safety when operating the oven can be achieved only if all the necessary measures have been taken. It depends on the oven operator's diligence in planning these measures and controlling how they are carried out.

The operator must ensure that

 all harmful gases are removed from the workplace, for example by an extraction

system,

 the extraction system is switched on,  the workplace is properly ventilated,  the oven is operated only in a perfect operating condition and, in particular, that

the functions of the safety components are checked regularly.

 the required personal protective equipment is available for and used by the

operating, maintenance, and repair personnel.

 these operating instructions, including the supplier documentation, are kept near

the oven. These instructions must be available at all times for anyone working with or on the oven;

 all the safety and operating instruction signs on the oven can be read properly.

Damaged or unreadable signs must be replaced immediately,

 oven personnel are informed regularly about all issues involving occupational

safety and environmental protection and are familiar with all the operating instructions, especially those involving safety,

 a risk assessment is carried out (in Germany, covered by Section 5 of the

Occupational Safety Act) to determine any other hazards that may result from the working conditions particular to the oven's location,

 all other instructions and safety guidelines that have been determined in a risk

assessment for the workplace are compiled in an operation manual (in Germany, covered by Section 6 of the Ordinance Regulating the Use of Operating Equipment).

 operating personnel still in training initially perform their work at the oven under

the supervision of an experienced person. Successful completion of the training period must be confirmed in writing.

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Note

In Germany, the VBG and BGZ accident prevention regulations must be followed. The accident prevention regulations applicable in the country where the oven is installed must be followed.

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