MRC DFO-720 Manuale utente

Operation manual for

DFO –DFI

Series

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

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

General Overview

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

Main Temperature Controller

Number Key Description / Function

③For setting and calling up parameters.

④To increase the value of digits.

⑤To decrease the value of digits.

⑥R Revert /STOP/Restart Timer (For machine with timer use

only)

⑦PV To display process value, menu symbol and error code.

⑧SV To display set point value, parameter value or control output

value.

⑨C Process Unit Indicator- Celsius

⑩ALM 123

Indicator Over-Heat Temperature.

Lights on when actual temperature over the set temperature

5℃, and turns off the heater.

⑪OUT 1 2 Control output lamp 1.

Light on when heater is activated

⑫MANU Lamp flashes during Manual Mode operates

⑬COMM Communication indicator

⑭TUNE Lamp flashes during auto-tuning operates

⑮Lock indicator

Setting parameter

The PV display indicates the parameter symbol, and the SV display indicates the

selected value of the selected parameter.

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

Setting the Temperature (Continuous mode)

Put the front switch on CONTINUES

Turn on the temperature controller/power switch. The temperature displays light up

and after a few seconds, the upper display shows the present value (PV) temperature.

The lower display shows the set value (SV) or set temperature.

Press to increase temperature gradually.

Press to decrease temperature gradually.

Setting the Temperature (timer mode)

Put the front switch on TIMER

Turn on the temperature controller/power switch. The temperature displays light up

and after a few seconds, the upper display shows the present value (PV) temperature.

The lower display shows the set value (SV) or set temperature.

Press to increase temperature gradually.

Press to decrease temperature gradually.

Press number ③twice. PV display , SV display 1.0

Press to increase or decrease time gradually. Setting time upon what you

need.

The timer will start from the temperature reach setting.

For example:

1.5 = 90 seconds (1.5 minutes), 1.0 = 60 seconds (1.0 minutes) 0.5 = 30 seconds.

Press number ③once. PV display , and SV display 1.0 →It mean the time

will counting down 1 min after temperature reach to the setpoint.

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

Electrical Connection Details

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)

It is highly recomended that any time working with the oven use high temp. gloves

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

Atmospheres

When an optional gas inlet is fitted, there is a label near the inlet saying "INERT GAS

ONLY". In practice, inert or oxidising gases may be used, but not combustible or toxic

gases

Door Switch (if fitted

If ordered, the door switch will isolate the heating elements and circulation fan. The door switch is

operated when the door is opened causing the heating elements and air circulation fan to be switched

off

Maintenance

QUALIFIED PERSONNEL

DANGER! ELECTRIC SHOCK. Risk of fatal injury. Only electrically qualified personnel should

attempt these maintenance procedures

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