VERDER CARBOLITE GERO HT 7/220 + No Controller Handbuch

Installation, Operation and Maintenance Instructions

700°C High Temperature Oven - HT Model: 220 Litres

No Controller

HT 7/220 + No Controller

MEN-HT07220-005_NOCTRL (17-02-2022)

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 Electrical Connections 7

3.0 Temperature Controller 9

4.0 Operation 10

4.1 Operating Cycle 10

4.2 Over-Temperature Control (if fitted) 10

4.3 Explosive Vapours 10

4.4 Atmospheres 11

4.5 Operator Safety 11

4.6 Solenoid Valve with Manual Switch (if fitted) 11

4.7 Variable Speed Fan (if fitted) 12

4.8 Exhaust Fan (if fitted) 12

4.9 Stoving and Curing (if fitted) 12

4.9.1 Pre-heater (if fitted) 12

5.0 Maintenance 13

5.1 General Maintenance 13

5.1.1 Cleaning 13

5.2 Calibration 13

5.3 After-Sales Service 13

5.4 Recommended Spare Parts and Spare Parts Kit 13

5.5 Power Adjustment 14

6.0 Repairs and Replacements 15

6.1 Safety Warning - Disconnection from Power Supply 15

6.2 Safety Warning - Refractory Fibre Insulation 15

6.3 Control Panel Removal 15

6.4 Temperature Controller Replacement 16

6.5 Solid-State Relay Replacement 16

6.6 Thermocouple Replacement 16

6.7 Element Replacement 17

6.8 Fuse Replacement 17

7.0 Fault Analysis 18

A. Oven Does Not Heat Up 18

B. Oven Overheats 18

8.0 Wiring Diagrams 19

8.1 WV-11-00/01 19

8.2 WS-10-01 - Isolating for 208 V version only 20

8.3 WS-14-04 21

9.0 Fuses and Power Settings 22

9.1 Fuses 22

9.2 Power Settings 22

10.0 Specifications 23

10.1 Environment 23

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.

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 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:

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)

3.0 Temperature Controller

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

separately.

4.0 Operation

4.1 Operating Cycle

The product is fitted with an instrument switch. The switch cuts off power to the

controllers and elements. The circulation fan will operate when the instrument switch is

on. An optional door switch may be fitted. If so, ensure that the door is closed to

operate the fans and heating elements.

Turn on the instrument switch to activate the temperature controllers. The controllers

illuminate and go through a short test cycle.

Over-Temperature option only. If the digital over-temperature option has not yet

been set as required, set and activate it according to the over-temperature controller

instructions.

The product will heat up according to the controller setpoint or program, unless a time

switch is fitted and switched off.

Over-Temperature option only. If the over-temperature circuit has tripped, an

indicator on the over-temperature controller flashes and the heating elements are

isolated. Find and correct the cause before resetting the over-temperature controller

according to the instructions supplied.

To switch the product off, turn off the instrument switch. If the product is to be left

unattended, isolate the electricity supply.

DO NOT switch off if the temperature is above 100 °C - damage could be caused to the

fan and motor. Adjust the controller to allow the temperature to fall.

4.2 Over-Temperature Control (if fitted)

The over-temperature controller should typically be set at 15 °C above the main

controller. If an over-temperature condition occurs, check the main controller is

functioning correctly.

An over-temperature condition cuts off power to the heating elements. A light in the

over-temperature controller flashes. To reset this, refer to the over-temperature control

section of this manual.

4.3 Explosive Vapours

Unless your product includes the stoving and curing option, this

model is not suitable for drying or heat treatment applications where

vapours are released that are combustible or which can form

explosive mixtures with air. Carbolite Gero manufactures other

products suitable for these applications.

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