VERDER CARBOLITE GERO CDHT 450 Handbuch

Installation, Operation and Maintenance Instructions

200°C Coal Drying Oven - CDHT Model: 450 Litres

2132 Controller

CDHT 450 + 2132 Controller

MEN-CDHT450-001_2132 (08-10-2018)

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 5

1.1 Switches and Lights 5

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 7

3.0 2132 Controller 9

3.1 Description 9

3.2 2132 Controller Operation 9

3.2.1 Controls 9

3.2.2 2132 Controller Operation 10

3.2.3 Basic Operation 10

3.2.4 Altering the Setpoint 10

3.2.5 Stopping and Starting Control 11

3.2.6 Altering the Ramp Rate 11

3.3 Operating with the Timer 12

3.3.1 Setting the Timer Mode 14

3.3.2 Setting the Time Period 14

3.3.3 Running with the Timer 14

3.3.4 Stopping the Timer 15

3.3.5 End of Time Period 16

3.3.6 Cancelling the Alarm 16

3.3.7 Program Example 16

3.4 Altering Power Limit 16

3.5 Audible Alarm 19

3.6 Temperature Controller Replacement 19

3.7 Navigation Diagram 20

4.0 2132 Over-Temperature Controller Description (if fitted) 22

4.1 Description 22

4.2 Operation 22

4.2.1 Controls 22

4.2.2 Operation 23

4.2.3 Over-Temperature Operation 23

4.2.4 Over-Temperature Alarm 23

4.2.5 Resetting the Over-Temperature Alarm 23

4.2.6 Sensor Break 23

4.3 Audible Alarm 24

4.4 Navigation Diagram 24

5.0 Operation 25

5.1 Operating Cycle 25

5.2 Over-Temperature Control (if fitted) 25

5.3 Explosive Vapours 25

5.4 Cool Drying Application 26

6.0 Maintenance 27

6.1 General Maintenance 27

6.2 Maintenance Schedule 27

6.2.1 Cleaning 29

6.3 Calibration 29

6.4 After-Sales Service 29

6.5 Recommended Spare Parts and Spare Parts Kit 29

6.6 Power Adjustment 29

7.0 Repairs and Replacements 31

7.1 Safety Warning - Disconnection from Power Supply 31

7.2 Safety Warning - Refractory Fibre Insulation 31

7.3 Panel Removal 31

7.4 Temperature Controller Replacement 32

7.5 Fuse Replacement 32

7.6 Element Replacement 32

7.7 Thermocouple Replacement 32

7.8 Solid-state Relay Replacement 33

8.0 Fuses and Power Settings 34

8.1 Fuses 34

8.2 Power Settings 34

9.0 Fault Analysis 35

A. Oven Does Not Heat Up 35

B. Oven Overheats 35

10.0 Wiring Diagrams 36

11.0 Specifications 37

11.1 Environment 37

1.0 Symbols and Warnings

1.1 Switches and Lights

Instrument switch: when the instrument switch is operated the

temperature control circuit is energised.

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

1.0 Symbols and Warnings

2.0 Installation

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 7.2.

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.

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.

2.0 Installation

A table of the most common fuse ratings is also given in section 8.0 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 L Brown to live

to either power

conductor

(For USA 200-240V,

connect L1)

N 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.

3.0 2132 Controller

3.1 Description

The 2132 Controller is made by Eurotherm, and is fitted and configured by Carbolite

Gero for immediate use. It is a digital instrument with PID control algorithms.

The 2132 Controller features:

lEasy use as a simple temperature controller, where on setting the required tem-

perature the controller immediately attempts to reach and maintain it.

lA ramp-to-setpoint feature, which may be used to limit the heating (or cooling).

lA timer function which allows for heating for a predetermined time, either from start

or from reaching temperature; or alternatively for delaying the start of heating.

lAn alarm output which may be used in conjunction with the timer, for example to

give an audible alarm at the end of the timing period.

3.2 2132 Controller Operation

3.2.1 Controls

Most Carbolite Gero products are fitted with an instrument switch which cuts off power

to the controller and other parts of the control circuit.

To operate the controller, power must be supplied to the product and the instrument

switch must be on. If a time switch is included in the product circuit, this must be in the

'ON' position.

When an over-temperature condition occurs, the controller cuts the power to a

contactor, which in turn cuts power to the heating elements. Power is not restored until

the controller is 'reset'.

Some components will operate after the over-temperature feature isolates the power

supply e.g. cooling fans will continue to operate, provided that there is a power supply

to the product. In some cases the product may not do so, if other options (such as a

door switch) are fitted.

3.0 2132 Controller

3.2.2 2132 Controller Operation

Key

A Alarm Light

B Page

C Scroll

D Down

E Up

F Display

When switched on, the controller lights up, goes through a short test routine and then

displays the measured temperature or the over-temperature setpoint.

The page key allows access to parameter lists within the controller.

A single press of the page key displays the temperature units, normally set to °C;

further presses reveal the lists indicated in the navigation diagram. See section 4.4.

The scroll key allows access to the parameters within a list. Some parameters are

display-only; others may be altered by the operator.

A single press of the scroll key in the 'Home' list displays the temperature units;

further presses reveal the parameters in the current list indicated in the navigation

diagram.

To return to the 'Home' list at any time, press page and scroll together, or wait

for 45 seconds.

The down and up keys are used to alter the setpoint or other parameter values.

3.2.3 Basic Operation

Normally no operator action is required other than entering the setpoint, as the

controller starts to control on being switched on, as described above.

3.2.4 Altering the Setpoint

With the display at 'Home', showing the measured temperature, press down or up

once to display the setpoint; press again or hold down to adjust it. The display returns to

the measured temperature when no key is pressed for 30 seconds.

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