background image

Note:

It is not necessary to acknowledge the over-temperature alarm by

pressing the buttons on the over-temperature controllers. Only press the
"OVERTEMP. RESET" button.

13. To switch off power to the heating elements, reduce the setpoint to 0°C on the

main temperature controller.

14. If at any point the external extraction system fails, the "AIR FLOW ALARM" lamp

will illuminate.

15. If the explosion relief panel ruptures, the "EXPLOSION RELIEF FAILED" lamp will

illuminate.

16. Switching off the mains isolator will cut power to the heating elements and tem-

perature controller(s).

Note:

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.

Note:

If the product is to be left switched off and unattended, isolate it from the

mains electrical supply.

4.1.1

Exhaust Fan Adjustment

To adjust the speed of the exhaust fan, edit "CH1 User Val" in each segment of the
controller program. The value is presented as a percentage e.g. 100 = 100% full
power.

Note:

Please refer to the separate Nanodac controller manual for details on how to

edit "Ch1 User Val".

4.2

Operating Cycle

Switch on the mains isolator, the mains on light should glow.

The controller becomes illuminated and goes through a short test cycle. The circulation
fan operates when the oven switch is switched on.

Both the mains on light and overtemperature alarm light will be illuminated. Press the
blue “Over temp reset” button on the front of the control panel.

A simple up and down set point can be entered in the controller or a program can be
created in Program Edit on level 2 (see controller manual).

Adjust the temperature controller – see the controller manual.

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

11

Summary of Contents for CARBOLITE GERO LGP 7/730

Page 1: ...Installation Operation and Maintenance Instructions 700 C Large General Purpose Oven LGP Model 730 Litres No Controller LGP 7 730 No Controller MEN LGP7073 001_NOCTRL 18 10 2021 ...

Page 2: ...7 3 0 Temperature Controller 9 4 0 Operation 10 4 1 Operating Cycle 10 4 1 1 Exhaust Fan Adjustment 11 4 2 Operating Cycle 11 4 3 Over Temperature Control if fitted 12 4 4 Explosive Vapours 12 4 5 Exhaust Fan if fitted 12 4 6 Door Switch if fitted 12 4 7 Loading and Unloading Chamber 13 5 0 Maintenance 14 5 1 General Maintenance 14 5 1 1 Cleaning 14 5 2 Calibration 14 5 3 After Sales Service 14 5 ...

Page 3: ...eplacement 18 7 0 Fault Analysis 19 A Oven Does Not Heat Up 19 B Oven Overheats 19 C Recirculation Fans Continue to Run 20 8 0 Wiring Diagrams 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 3 ...

Page 4: ...djacent light glows or flashes to indicate that power is being supplied to the elements Exhaust fan if fitted see section 4 5 for full details Supply Light when the product is connected to the electrical supply the light in the adjacent switch glows 1 2 Warnings DANGER Electric shock Read any warning printed next to this symbol WARNING Risk of fatal injury DANGER Hot surface Read any warning print...

Page 5: ... 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 Note This LGP oven is supplied with a floor stand that elevates it approximately 500 mm off the ground Place the product on a level surface in a well ventilated area Site away from other sources o...

Page 6: ...of any obstruction 2 3 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 A table of the most common fuse rat...

Page 7: ...ST 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 3 phase L1 Black to phase 1 L2 Black to phase 2 L...

Page 8: ...tation is as shown on the fan motor s If it is incorrect change the phase rotation of the incoming supply to achieve correct rotation The correct rotational direction is essential to achieve the specified temperature uniformity 8 ...

Page 9: ...3 0 Temperature Controller If this product is fitted with a temperature controller instructions are provided separately 9 ...

Page 10: ...required Please refer to the separate tem perature controller manual for details on controller operation 6 If the product is fitted with over temperature protection set the required over temperature setpoint according to the instructions detailed in the separate con troller manual 7 Turn on the external extraction The EXTERNAL EXTRACTION ON lamp will illu minate 8 If a setpoint has been set on the...

Page 11: ...esented as a percentage e g 100 100 full power Note Please refer to the separate Nanodac controller manual for details on how to edit Ch1 User Val 4 2 Operating Cycle Switch on the mains isolator the mains on light should glow The controller becomes illuminated and goes through a short test cycle The circulation fan operates when the oven switch is switched on Both the mains on light and overtempe...

Page 12: ...xplosive 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 4 5 Exhaust Fan if fitted To operate the exhaust fan use the fan switch on the control...

Page 13: ...llow free air circulation Do not place loads on the chamber floor use the bottom shelf Remember that the shelves and work pieces may be hot use suitable gloves or other handling equipment Have a heat resistant surface available on which to place hot materials There is no physical stop to prevent shelf removal take care not to pull out a shelf accidentally 13 ...

Page 14: ...epending on the controller fitted the controller instructions may contain calibration instructions 5 3 After Sales Service Carbolite Gero Service has a team of Service Engineers who can offer repair calibration and preventive maintenance of furnace and oven products both at the Carbolite Gero factory and at customers premises throughout the world A telephone call or email often enables a fault to ...

Page 15: ...0 The power limit parameter OP Hi may be accessible to the operator but should not generally be altered In some cases the supply voltage may be outside the range 220 240 V or the 3 phase equivalent the power limit parameter may be set to a value other than 100 Do not increase the value to 100 see section 9 0 for details of power limit settings 15 ...

Page 16: ...er levels may be encountered during maintenance or repair Whilst there is no evidence of any long term health hazards it is strongly recommended that safety precautions are taken whenever the materials are handled Exposure to fibre dust may cause respiratory disease When handling the material always use approved respiratory protection equipment RPE eg FFP3 eye protection gloves and long sleeved cl...

Page 17: ... circuit board that contains an EMC filter The fuses are marked with their ratings Take care not to disconnect the wires leading from the EMC filter without first recording their positions they must be reconnected to the correct terminals 6 6 Element Replacement See section 6 3 for details on how to gain access l Disconnect the wires from the heating element terminals l Remove any starlock washers...

Page 18: ...ion fitting with a new ferrule Feed in new thermocouple through from the back Tighten the compression fitting Refit the air guide Bend the thermocouple to match the shape of the previous part and refit any clips Refit the element access panel Compression fittings are only fitted to moisture extraction and stoving and curing products If fitted ferrules need replacing 6 8 Solid State Relay Replaceme...

Page 19: ...ntroller There are no lights glowing on the controller The controller may be faulty or not receiving a supply due to a faulty switch or a wiring fault B Oven Overheats 1 Oven only heats up when the instrument switch is ON The controller shows a very high temperature The controller is faulty The controller shows a low temperature The thermocouple may have been shorted out or may have been moved out...

Page 20: ...s Continue to Run Recirculation fans run when oven is switched OFF In order to prevent damage to the elements and fans the fans will continue to run to cool the heating elements if they were typically hotter than 400 C 20 ...

Page 21: ...8 0 Wiring Diagrams For wiring diagrams please contact Carbolite Gero Service Please quote the serial number and model 21 ...

Page 22: ...ng label for current See table below for fuse rating Model Phases Volts Main Fuse Rating Amps per Phase F1 LGP 7 730 3 phase No Neutral 200 63 LGP 7 730 3 phase Neutral 380 415 40 9 2 Power Settings The power limit settings parameter OP Hi for this model are voltage dependant The figures represent the maximum percentage of time that controlled power is supplied to the elements Do not attempt to im...

Page 23: ...ensions External H x W x D mm Approx Capacity l LGP 7 730 700 21 900 x 900 x 900 1550 x 1920 x 1620 730 Large General Purpose Oven 10 1 Environment The models listed in this manual contain electrical parts and should be stored and used in indoor conditions as follows Temperature 5 C 40 C Relative humidity Maximum 80 up to 31 C decreasing linearly to 50 at 40 C 23 ...

Page 24: ......

Page 25: ...Notes Service Record Engineer Name Date Record of Work ...

Page 26: ... us at the address below or ask your nearest stockist For preventive maintenance repair and calibration of all furnace and oven products please contact Carbolite Gero Service Telephone 44 0 1433 624242 Fax 44 0 1433 624243 Email ServiceUK carbolite gero com Carbolite Gero Ltd Parsons Lane Hope Hope Valley S33 6RB England Telephone 44 0 1433 620011 Fax 44 0 1433 621198 Email Info carbolite gero com...

Reviews: