VERDER CARBOLITE GERO PF 400 Manual

Installation, Operation and Maintenance Instructions
250 °C Peak Fan Convection Oven - PF Model: 400 Litres
No Controller
PF 400 + No Controller
MEN-PF400-005_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 General Warnings 5
2.0 Installation 6
2.1 Unpacking and Handling 6
2.2 Siting and Setting Up 6
2.3 Electrical Connections 8
3.0 Temperature Controller 10
4.0 Operation 11
4.1 Operating Cycle 11
4.2 Over-Temperature Control (if fitted) 11
4.3 Vents 11
4.4 Temperature Uniformity 12
4.5 Explosive Vapours 12
4.6 Atmospheres 12
4.7 Interior Light (if fitted) 12
4.8 Solenoid Valve with Manual Switch (if fitted) 12
4.9 Variable Speed Fan (if fitted) 13
4.10 Exhaust Fan (if fitted) 13
4.11 Stoving and Curing (if fitted) 13
4.11.1 Pre-heater (if fitted) 13
4.12 Door Switch (if fitted) 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
2

6.2 Safety Warning - Refractory Fibre Insulation 19
6.3 Panel Removal 20
6.3.1 Side Panel 20
6.3.2 Internal Element Cover 20
6.4 Temperature Controller Replacement 21
6.5 Solid-State Relay Replacement 21
6.6 Thermocouple Replacement 21
6.7 Element Replacement 21
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 24
8.2 WV-22-01 25
9.0 Fuses and Power Settings 26
9.1 Fuses 26
9.2 Power Settings 26
10.0 Specifications 27
10.1 Environment 27
3

1.0 Symbols and Warnings
1.1 Switches and Lights
Instrument switch: when the instrument switch is operated the
temperature control circuit is energised.
Door lock indicator: When this lamp is illuminated, the door is locked
and cannot be opened.
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
4

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
5

2.0 Installation
2.1 Unpacking and Handling
Remove the shelves and runners from the packaging before attempting to move the
equipment.
When unpacking and handling the product, always lift it by its base. Do not use the
door or any other projecting cover or component to support the equipment when
moving it. Use two or more people to carry the product where possible.
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 and runners as required.
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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Ensure that the product is placed in such a way that it can be quickly switched off or
disconnected from the electrical supply.
Some models have protruding fan motor housings: these housings must be in an area
of good ventilation.
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.
The ends of the runners should be inserted into the vertical
columns of holes simultaneously at the front and the back. The
bar should then be rotated through 90° in a downwards
direction to secure it in place. The shelves slide onto the
runners such that the spurs on the lower side of the shelf are
under the bar at the back; this prevents the shelf from tilting
forwards when partially withdrawn.
Do NOT use the oven floor as a shelf.
Key
A Runner
B Shelf
C Spur
7

2.3 Electrical Connections
Connection by a qualified electrician is recommended.
All models covered by this manual may be ordered for single phase A.C. supply, which
may be Live to Neutral non-reversible, Live to Neutral reversible or Live to Live.
Check the product rating label before connection. The supply voltage should agree with
the voltage on the label and the supply capacity should be sufficient for the current on
the label.
The supply should be fused at the next size equal to, or higher than the current on the
label. This manual contains a table of the most common fuse ratings.
When the mains cable is factory fitted, internal fuses are also fitted. It is essential that
the operator ensures that the product is correctly fused.
Products with a factory fitted supply cable are designed to be wired directly to an
isolator or fitted with a line plug.
Products without a factory fitted supply cable require a permanent connection to a
fused and isolated supply. The product's electrical access panel should be temporarily
removed, and connections made to the internal terminals.
When connecting the product to the power supply, the plug or isolating switch should
be accessible, easy to remove, and within reach of the operator.
The 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:
8

2- or
3-phase L1 Black to phase 1
L2 Black to phase 2
L3 Black to phase 3 (except 2-phase)
N Light Blue to neutral (except delta)
PE Green/ Yellow to earth (ground)
9

3.0 Temperature Controller
If this product is fitted with a temperature controller, instructions are provided
separately.
10