VERDER CARBOLITE GERO +GP 220 No Controller Manual

Installation, Operation and Maintenance Instructions
300°C General Purpose Oven - GP A/B Models: 220 Litres
No Controller
GP 220 + No Controller
MEN-GP220AB-005_NOCTRL (07-03-2023)

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 Vents 14
4.4 Temperature Uniformity 14
4.5 Explosive Vapours 14
4.6 Atmospheres 15
4.7 Interior Light (if fitted) 15
4.8 Solenoid Valve with Manual Switch (if fitted) 15
4.9 Variable Speed Fan (if fitted) 15
4.10 Exhaust Fan (if fitted) 15
4.11 Stoving and Curing (if fitted) 16
4.11.1 Pre-heater (if fitted) 16
4.12 Door Switch (if fitted) 16
5.0 Maintenance 17
5.1 General Maintenance 17
5.2 Maintenance Schedule 17
5.2.1 Cleaning 19
5.3 Calibration 19
5.4 After-Sales Service 19
5.5 Recommended Spare Parts and Spare Parts Kit 19
5.6 Power Adjustment 19
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6.0 Repairs and Replacements 21
6.1 Safety Warning - Disconnection from Power Supply 21
6.2 Safety Warning - Refractory Fibre Insulation 21
6.3 Panel Removal 21
6.4 Temperature Controller Replacement 22
6.5 Fuse Replacement 22
6.6 Element Replacement 22
6.7 Thermocouple Replacement 22
6.8 Solid-state Relay Replacement 23
7.0 Fault Analysis 24
A. Oven Does Not Heat Up 24
B. Oven Overheats 24
8.0 Wiring Diagrams 25
8.1 WV-11-01 25
8.2 WS-10-01 - Isolating for 208 V version only 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
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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.
Interior light: when the interior light switch is operated the interior
light illuminates.
Solenoid valve (if fitted): see section 4.8 for full details
Variable speed fan (if fitted): see section 4.9 for full details
Exhaust fan (if fitted): see section 4.10 for full details
Stoving and curing (if fitted): see section 4.11 for full details
1.2 General Warnings
DANGER – Electric shock. Read any warning printed next to this
symbol.
WARNING: Risk of fatal injury.
4

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
5

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.
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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.
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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
8

2.3.2 Flat Pack Stand Assembly
9

2.4 Electrical Connections
Connection by a qualified electrician is recommended.
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.
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