VERDER CARBOLITE GERO LGP 2/730 Manual

Installation, Operation and Maintenance Instructions
250°C Large General Purpose Oven - LGP Model: 730 Litres
No Controller
LGP 2/730 + No Controller
MEN-LGP2073-001_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 Warnings 4
2.0 Installation 5
2.1 Unpacking and Handling 5
2.2 Siting and Setting Up 5
2.3 Electrical Connections 6
2.4 Fan Rotation Indicator 7
3.0 Temperature Controller 9
4.0 Operation 10
4.1 Operating Cycle 10
4.1.1 Exhaust Fan Adjustment 11
4.2 Operating Cycle 11
4.3 Over-Temperature Control (if fitted) 12
4.4 Explosive Vapours 12
4.5 Exhaust Fan (if fitted) 12
4.6 Door Switch (if fitted) 12
4.7 Loading and Unloading Chamber 13
5.0 Maintenance 14
5.1 General Maintenance 14
5.2 Maintenance Schedule 14
5.2.1 Cleaning 16
5.3 Calibration 16
5.4 After-Sales Service 16
5.5 Recommended Spare Parts and Spare Parts Kit 16
5.6 Power Adjustment 16
6.0 Repairs and Replacements 18
6.1 Safety Warning - Disconnection from Power Supply 18
6.2 Safety Warning - Refractory Fibre Insulation 18
6.3 Panel Removal 18
6.4 Temperature Controller Replacement 19
6.5 Fuse Replacement 19
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6.6 Element Replacement 19
6.7 Thermocouple Replacement 20
6.8 Solid-State Relay Replacement 20
7.0 Fault Analysis 21
A. Oven Does Not Heat Up 21
B. Oven Overheats 21
8.0 Wiring Diagrams 22
9.0 Fuses and Power Settings 23
9.1 Fuses 23
9.2 Power Settings 23
10.0 Specifications 24
10.1 Environment 24
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1.0 Symbols and Warnings
The following information includes different product options. They may not all apply to
your product.
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.
Exhaust fan (if fitted): see section 4.5 for full details
Supply Light: when the product is connected to the electrical
supply the light in the adjacent switch glows
1.2 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.
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2.0 Installation
2.1 Unpacking and Handling
When unpacking or moving the product, always lift by its base; do not use the door or
any other projecting cover or component to support the equipment when moving it.
Use a fork lift or pallet truck to move the product; position the product on a level
surface and use an adequate number of personnel to safely move the product into
position.
Carefully remove any packing material from inside and around the product before use.
Avoid damaging the surrounding insulation when removing packing materials.
Locate the shelves as required.
Some models may be lifted by fitting lifting bolts to captive threads which are fitted in
the top of the case, whilst others may have welded on lifting eyes.
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
Note: This LGP oven is supplied with a floor stand that elevates it approximately 500
mm off the ground.
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.
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