VERDER CARBOLITE GERO LGP 2/500 Handbuch

Installation, Operation and Maintenance Instructions

250°C Large General Purpose Oven - LGP Model: 500 Litres

No Controller

LGP 2/500 + No Controller

MEN-LGP2050-001_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 6

2.1 Unpacking and Handling 6

2.2 Siting and Setting Up 6

2.3 Electrical Connections 7

2.4 Fan Rotation Indicator 9

3.0 Temperature Controller 10

4.0 Operation 11

4.1 Operating Cycle 11

4.1.1 Exhaust Fan Adjustment 12

4.2 Operating Cycle 12

4.3 Over-Temperature Control (if fitted) 13

4.4 Explosive Vapours 13

4.5 Exhaust Fan (if fitted) 13

4.6 Door Switch (if fitted) 13

4.7 Loading and Unloading Chamber 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

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 Panel Removal 19

6.4 Temperature Controller Replacement 20

6.5 Fuse Replacement 20

6.6 Element Replacement 20

6.7 Thermocouple Replacement 21

6.8 Solid-State Relay Replacement 21

7.0 Fault Analysis 22

A. Oven Does Not Heat Up 22

B. Oven Overheats 22

8.0 Wiring Diagrams 23

9.0 Fuses and Power Settings 24

9.1 Fuses 24

9.2 Power Settings 24

10.0 Specifications 25

10.1 Environment 25

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.

WARNING -

Do not use solvent substances within this product.

WARNING -

This product is large enough for a person to enter the

chamber. Ensure that no one is within the chamber

before closing the door.

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.

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 Electrical Connections

Connection by a qualified electrician is recommended.

The product covered by this manual usually requires a single phase A.C. supply, which

may be Live to Neutral non-reversible, Live to Neutral reversible or Live to Live. Some

models may be ordered for 3-phase use, which may be star or delta.

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

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

current on the label.

A table of the most common fuse ratings is also given in section 9.0 towards the back

of this manual. Ensure that the correct fuse is used for the product supplied. When the

mains cable is factory fitted internal fuses are also fitted. Customer fusing is essential.

Product with supply cable: either wire directly to an isolator or fit with a line plug.

Product without supply cable: a permanent connection to a fused and isolated supply

should be made to the internal terminals after temporary removal of the product access

panel. The access panel is located at the top of the 'A' models and the right hand side

of the 'B' models.

Connection by line plug: the plug should be within reach of the operator and should be

easy to remove.

Connection to isolating switch: this should operate on both conductors (single phase) or

on all live conductors (three phase), and should be within reach of the operator.

The electrical 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:

3-phase L1 Black to phase 1

L2 Black to phase 2

L3 Black to phase 3

N Light Blue to neutral (except delta)

PE Green/ Yellow to earth (ground)

DO NOT connect a product ordered for three phase use to a single

phase supply or to the wrong type of three phase supply.

2.4 Fan Rotation Indicator

Note: Do not connect an oven ordered for three phase use to a single phase supply

or to the wrong type of three phase supply.

Check that the fan motor rotation is as shown on the fan motor(s). If it is incorrect

change the phase rotation of the incoming supply to achieve correct rotation.

The correct rotational direction is essential to achieve the specified temperature

uniformity.

3.0 Temperature Controller

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

separately.

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