VERDER Carbolite Gero CWF 11/23 Handbuch

Installation, Operation and Maintenance Instructions

1100°C Chamber Furnace - CWF Model: 23 Litres

No Controller

CWF 11/23 + No Controller

MEN-CWF1123-005_NOCTRL (29-11-2022)

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

1.3 Prerequisites to Use 5

2.0 Installation 6

2.1 Unpacking and Handling 6

2.2 Siting and Setting Up 6

2.3 Chimney 7

2.4 A105 Retort Installation (optional) 9

2.5 Electrical Connections 12

3.0 Temperature Controller 14

4.0 Operation 15

4.1 Operating Cycle 15

4.2 General Operating Notes 15

4.3 Use of Probes and Metal Sheathed Thermocouples 16

4.4 Atmospheres 16

4.5 A105 Retort (optional) 17

4.5.1 Safety Switch Bypass 17

4.5.2 Maximum Operating Temperatures 17

4.5.3 Pressure 18

4.6 Operator Safety 18

4.7 Power Adjustment 19

5.0 Maintenance 20

5.1 General Maintenance 20

5.2 Maintenance Schedule 20

5.2.1 Cleaning 22

5.3 Safety Switch 22

5.4 Calibration 22

5.5 After-Sales Service 23

5.6 Recommended Spare Parts and Spare Parts Kit 23

6.0 Repairs and Replacements 24

6.1 Safety Warning - Disconnection from Power Supply 24

6.2 Safety Warning - Refractory Fibre Insulation 24

6.3 Temperature Controller Replacement 24

6.4 Solid-State Relay Replacement 25

6.5 Thermocouple Replacement 25

6.6 Panel Element Replacement 26

6.7 Door Plug Replacement 28

6.8 Fuse Replacement 28

7.0 Fault Analysis 30

A. Furnace Does Not Heat Up 30

B. Product Overheats 31

8.0 Wiring Diagrams 32

8.1 WA-U3-30 33

8.2 WA-U3-31 35

9.0 Fuses and Power Settings 37

9.1 Fuses 37

9.2 Power Settings 37

10.0 Specifications 38

10.1 Environment 38

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.

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

1.3 Prerequisites to Use

Prior to the commissioning and use of this product, all personnel involved in its

installation, operation and maintenance must be deemed competent and have:

lRead and understood the information contained within this manual

lReceived the relevant training with regard to safety and operation of the product

lBeen provided with the appropriate PPE (Personal Protective Equipment) required

for the safe operation of this product

Note: The customer is responsible for ensuring that all of the above conditions are

satisfied before the product is commissioned for use.

Note: Unless otherwise specified, the customer is responsible for the

installation of this product and the safe connection of any additional

equipment and gas or liquid supply lines.

2.0 Installation

2.1 Unpacking and Handling

When unpacking and handling the product, always lift it by its base. Do not use the

door or any other projecting cover or component to support the equipment when

moving it. Use two or more people to carry the product where possible.

Carefully remove any packing material from inside and around the product before use.

Avoid damaging the surrounding insulation when removing packing materials.

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.

Depending on the application of the product, it may be appropriate to position it under

an extraction hood. Ensure the extraction hood is switched on during use.

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

disconnected from the electrical supply.

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 Chimney

The chimney is a length of tubing. If it is supplied unfitted, then fit it through the hole

in the top of the case.

If the product is to be used to heat substances that emit fumes, a fume extraction duct

of approximately 75 mm - 150 mm inlet diameter may be placed directly above the

chimney outlet.

Do not make a sealed connection to the product chimney as this causes excessive

airflow through the chamber and results in poor temperature uniformity.

Key

A Duct (75mm-150mm diameter)

B Ambient air is drawn into duct

C Chimney

D 25mm vertical gap between chimney and duct

2.4 A105 Retort Installation (optional)

If the furnace has been ordered with the A105 retort option, it is important that the

retort is correctly installed within the furnace before operation.

Note: Before installing the retort, ensure that all packaging is removed from both

the retort and the furnace.

To install the retort:

lRemove the two bolts and washers from

the front of the furnace shelf, and open

the furnace door.

lCarefully lift the retort and slide it into

the furnace chamber.

Note: The retort is heavy and may require

2 people to lift. Please consult your health

and safety personnel before carrying out

any manual handling procedures.

lEnsure that the two holes in the retort

support bracket align with the holes in

the furnace shelf.

lSecure the retort in place with the

washers and bolts.

lRemove the two screws to separate the

two sections of the insulated door

surround.

lCarefully slide the top of the door

surround behind the door, until it rests on

the top of the retort.

lCarefully position the bottom section of

the door surround beneath the retort.

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