VERDER Carbolite Gero HT 4/28 Handbuch

Installation, Operation and Maintenance Instructions

400°C High Temperature Oven - HT Model: 28 Litres

No Controller

HT 4/28 + No Controller

MEN-HT04028-005_NOCTRL (01-09-2022)

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

2.0 Installation 6

2.1 Unpacking and Handling 6

2.2 Siting and Setting Up 6

2.3 Flat Pack Stand (optional) 8

2.3.1 Parts Supplied 8

2.3.2 Flat Pack Stand Assembly 9

2.4 Electrical Connections 10

3.0 Temperature Controller 12

4.0 Operation 13

4.1 Operating Cycle 13

4.2 Over-Temperature Control (if fitted) 13

4.3 Explosive Vapours 13

4.4 Atmospheres 14

4.5 Operator Safety 14

4.6 Solenoid Valve with Manual Switch (if fitted) 14

4.7 Variable Speed Fan (if fitted) 15

4.8 Exhaust Fan (if fitted) 15

4.9 Stoving and Curing (if fitted) 15

4.9.1 Pre-heater (if fitted) 15

5.0 Maintenance 16

5.1 General Maintenance 16

5.2 Maintenance Schedule 16

5.2.1 Cleaning 18

5.3 Calibration 18

5.4 After-Sales Service 18

5.5 Recommended Spare Parts and Spare Parts Kit 18

5.6 Power Adjustment 18

6.0 Repairs and Replacements 20

6.1 Safety Warning - Disconnection from Power Supply 20

6.2 Safety Warning - Refractory Fibre Insulation 20

6.3 Control Panel Removal 20

6.4 Temperature Controller Replacement 21

6.5 Solid-State Relay Replacement 21

6.6 Thermocouple Replacement 21

6.7 Element Replacement 22

6.8 Fuse Replacement 22

7.0 Fault Analysis 23

A. Oven Does Not Heat Up 23

B. Oven Overheats 23

8.0 Wiring Diagrams 24

8.1 WV-11-00/01 24

8.2 WS-10-01 - Isolating for 208 V version only 25

8.3 WS-14-04 26

9.0 Fuses and Power Settings 27

9.1 Fuses 27

9.2 Power Settings 27

10.0 Specifications 28

10.1 Environment 28

1.0 Symbols and Warnings

1.1 Switches and Lights

Instrument switch: when the instrument switch is operated the

temperature control circuit is energised.

Solenoid valve (if fitted): see section 4.6 for full details

Variable speed fan (if fitted): see section 4.7 for full details

Exhaust fan (if fitted): see section 4.8 for full details

Stoving and curing (if fitted): see section 4.9 for full details

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 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

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 Flat Pack Stand (optional)

The flat pack stand is available in a range of sizes depending on the dimensions of the

product for which it has been ordered. Subsequently, the number of fixings may vary

between the different sizes of stand.

2.3.1 Parts Supplied

Stand Top (x1) Stand Leg (x2)

Stand Cross Brace (x2) M10 Bolt

M10 Washer M10 Locking Nut

2.3.2 Flat Pack Stand Assembly

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.

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