VERDER CARBOLITE GERO CFM 14/2 Handbuch

Installation, Operation and Maintenance Instructions

1400°C Combustion Tube Furnace - CFM Model:14/2 AUX

No Controller

CFM 14/2 + No Controller

MEN-CFM1402X-005_NOCTRL (18-10-2021)

Contents

This manual is for guidance on the use of the Carbolite Gero product specified on the

front cover. This manual should be read thoroughly before unpacking and using the

furnace or oven. The model details and serial number are shown on the back of this

manual. Use the product for the purpose for which it is intended.

1.0 Symbols and Warnings 4

1.1 Switches and Lights 4

1.2 General Warnings 4

2.0 Installation 6

2.1 Unpacking and Handling 6

2.2 Siting and Setting Up 6

2.3 Heating Elements 7

2.4 Electrical Connections 8

3.0 Temperature Controller 10

4.0 Operation 11

4.1 Operating Cycle 11

4.2 Auxiliary Heater 11

4.3 General Operating Advice 12

4.4 Tube Life 12

4.5 Operator Safety 13

4.6 Pressure 14

5.0 Maintenance 15

5.1 General Maintenance 15

5.2 Maintenance Schedule 15

5.2.1 Cleaning 17

5.3 Calibration 17

5.4 After-Sales Service 17

5.5 Recommended Spare Parts and Spare Parts Kit 17

5.6 Power Adjustment 17

5.7 Element Ageing 18

6.0 Repairs and Replacements 19

6.1 Safety Warning - Disconnection from Power Supply 19

6.2 Safety Warning - Refractory Fibre Insulation 19

6.3 Temperature Controller Replacement 19

6.4 Solid-State Relay Replacement 20

6.5 Thermocouple Replacement 20

6.6 Element Fitting and Replacement - 1400 °C Models 21

6.7 Fuse Replacement 22

7.0 Fault Analysis 23

A. Furnace Does Not Heat Up 23

B. Product Overheats 24

8.0 Wiring Diagrams 25

8.1 WB-12-10-AUX 25

8.2 WB-12-11-AUX 25

9.0 Fuses and Power Settings 27

9.1 Fuses 27

9.2 Power Settings 27

User Power Setting Adjustments 28

10.0 Specifications 29

10.1 Environment 29

1.0 Symbols and Warnings

1.1 Switches and Lights

Instrument switch: when the instrument switch is operated the

temperature control circuit is energised.

Heat light: the adjacent light glows or flashes to indicate that

power is being supplied to the elements.

Heat switch: the switch disconnects power to the heating

elements; unless this switch is OFF there is a danger of electric

shock when inserting objects into the product.

1.2 General Warnings

DANGER – Electric shock. Read any warning printed next to this

symbol.

WARNING: Risk of fatal injury.

DANGER – Hot surface. Read any warning printed next to this

symbol.

WARNING: All surfaces of a product may be hot.

DANGER – Read any warning printed next to this symbol.

Caution – Double Pole/Neutral Fusing

2.0 Installation

2.1 Unpacking and Handling

When unpacking or moving the product always lift it by its base or by both ends of the

main body. Never lift it by its work tube or the surrounding insulation. Use two or more

people to carry the product and control box. Remove any packing material from inside

the product before use.

If an optional or special stand is separately supplied, assemble the product on to it.

Some models may be supplied for customer mounting and may require customer

preparation of mounting components before installation.

NOTE: This product contains Refractory Ceramic Fibre (also known

as Alumino Silicate Wool - ASW). For precautions and advice on

handling this material see section 6.2.

2.2 Siting and Setting Up

Place the product on a level surface in a well ventilated area.

Site away from other sources of heat and on a non-flammable surface that is resistant

to accidental spillage or hot materials.

The surface on which the equipment is mounted should be stable and not subject to

movement or vibrations.

The height of the mounting surface is important to avoid operator strain when loading

and unloading samples.

Unless otherwise stated elsewhere in this manual, ensure that there is at least 150

mm of free space around the back and sides of the product. Clear space is required

above the product to dissipate heat.

Work tubes:

It is recommended that the work tube has either insulation plugs or

radiation shields fitted to minimise heat loss from both ends of the work

tube. If the work tube has open ends, a significant amount of energy

could be radiated from the ends of the work tube. Adjacent surfaces

should always be made from a non-flammable material.

Ensure that the ends of the work tube are positioned at least 500 mm

away from any adjacent surface so that any energy radiated cannot heat

an adjacent surface to a dangerous temperature.

Ensure that the product is placed in such a way that it can be quickly switched off or

disconnected from the electrical supply.

The product is typically used for sulphur and chlorine test in accordance with BS1016

parts 6 & 7, ASTM D 3177-75; ISO 351 & 609.

Please refer to the appropriate documentation.

This manual only gives general guidance common to tube products.

Fit any work tube(s) ordered into place. If a metal work tube is being used in the

product, ensure that it is earthed and that it is mounted so as not to touch the products

ceramic tube or insulation.

Under no circumstances should any objects be placed on top of the

product. Always ensure that any vents on the top of the product are clear

of any obstruction. Always ensure all cooling vents and cooling fans (if

fitted) are clear of any obstruction.

2.3 Heating Elements

The silicon carbide elements are VERY FRAGILE and are packed separately. Fit them

accordingly to the instructions in section 6.0 for element fitting and replacement

instructions.

2.4 Electrical Connections

Connection by a qualified electrician is recommended.

This product requires a single-phase A.C. supply with earth (ground), which may be

Live to Neutral non-reversible (polarised), Live to Neutral reversible (non-polarised), or

Live to Live.

Check the product rating label before connection. The supply voltage should agree with

the voltage on the label and the supply capacity should be sufficient for the current on

the label.

The supply should be fused at the next size equal to, or higher than the current on the

label. This manual contains a table of the most common fuse ratings.

When the mains cable is factory fitted, internal fuses are also fitted. It is essential that

the operator ensures that the product is correctly fused.

Products with a factory fitted supply cable are designed to be wired directly to an

isolator or fitted with a line plug.

Products without a factory fitted supply cable require a permanent connection to a

fused and isolated supply. The product's electrical access panel should be temporarily

removed, and connections made to the internal terminals.

When connecting the product to the power supply, the plug or isolating switch should

be accessible, easy to remove, and within reach of the operator.

The supply MUST incorporate an earth (ground).

Supply Terminal Label Cable Colour

Supply Types

Live - Neutral Reversible or Live-

Live

1-phase L1 Brown to live

to either power

conductor

(For USA 200-240V,

connect L1)

N / L2 Blue to neutral

to the other power

conductor

(For USA 200-240V,

connect L2)

PE Green/ Yellow to earth

(ground) to earth (ground)

Electrical Connection Details:

Technical Notes

This model has an electronically controlled power limit. Do not attempt to calculate the

Amps from the Wattage. High break capacity fuses should be used. Avoid fast-blow

fuses and magnetic trip circuit breakers - consult Carbolite Gero if in doubt.

3.0 Temperature Controller

If this product is fitted with a temperature controller, instructions are provided

separately.

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