VERDER CARBOLITE GERO BLF 17/8 Manual

Installation, Operation and Maintenance Instructions
1700°C Bottom Loading Furnace - BLF Model: 8 Litres
No Controller
BLF 17/8 + No Controller
MEN-BLF1708-003_NOCTRL (29-10-2021)

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
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 Fitting the Chimney and Heating Elements 7
2.4 Electrical Connections 8
3.0 Temperature Controller 10
4.0 Operation 11
4.1 Operating Cycle 11
4.2 Emergency Stop Button 11
4.3 General Operating Advice 11
4.4 Atmospheres & Corrosive Materials 12
4.5 Operator Safety 13
4.6 Notes on Temperature Control 13
4.7 Insulation Cracking 13
4.8 Thermocouple Warnings 13
4.9 Inverted Crucible Option 14
4.10 Element Protection Tube Option 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 (Controller) 17
5.7 Power Adjustment (Thyristor) 18
6.0 Repairs and Replacements 19
6.1 Safety Warning - Disconnection from Power Supply 19
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6.2 Safety Warning - Refractory Fibre Insulation 19
6.3 Safety Warning - Molybdenum Disilicide Elements 20
6.4 Temperature Controller Replacement 20
6.5 Fuse Replacement 20
6.6 Thermocouple Replacement 20
6.7 Element Protection Tube Option Replacement Procedure 21
6.8 Insulation Replacement 21
6.9 Element Installation and Replacement 22
7.0 Fault Analysis 25
A. Furnace Does Not Heat Up 25
B. Product Overheats 26
8.0 Wiring Diagrams 27
8.1 215-1-1009 27
8.2 215-1-1007 28
9.0 Fuses and Power Settings 29
9.1 Fuses 29
9.2 Power Settings 29
10.0 Specifications 30
10.1 Environment 30
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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
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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.
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