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Summary of Contents for VERDER Carbolite Gero HTMA 7/220
- Page 1 Installation, Operation and Maintenance Instructions 700°C Modified Atmosphere Oven - HTMA Model: 220 Litres No Controller HTMA 7/220 + No Controller MEN-HTMA7220-05_NOCTRL (27-09-2022)
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Page 2: Table Of Contents
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. - Page 3 Safety Warning - Disconnection from Power Supply Safety Warning - Refractory Fibre Insulation Control Panel Removal Temperature Controller Replacement Solid-State Relay Replacement Thermocouple Replacement Element Replacement Fuse Replacement 7.0 Fault Analysis Oven Does Not Heat Up Oven Overheats 8.0 Wiring Diagrams 9.0 Fuses and Power Settings Fuses Power Settings...
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Page 4: Symbols And Warnings
1.0 Symbols and Warnings Switches and Lights Instrument switch: when the instrument switch is operated the temperature control circuit is energised. General Warnings DANGER – Electric shock. Read any warning printed next to this symbol. WARNING: Risk of fatal injury. DANGER –... -
Page 5: Installation
2.0 Installation 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. - Page 6 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.
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Page 7: Flat Pack Stand (Optional)
2.3 Flat Pack Stand (optional) The flat pack stand is available in a range of sizes depending on the dimensions of the product for which it has been ordered. Subsequently, the number of fixings may vary between the different sizes of stand. 2.3.1 Parts Supplied Stand Top (x1) -
Page 8: Flat Pack Stand Assembly
2.3.2 Flat Pack Stand Assembly... -
Page 9: Electrical Connections
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. - Page 10 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.
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Page 11: Temperature Controller
3.0 Temperature Controller If this product is fitted with a temperature controller, instructions are provided separately. -
Page 12: Operation
4.0 Operation 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. -
Page 13: Variable Speed Fan (If Fitted)
Variable Speed Fan (if fitted) If fitted, the variable speed control is fitted in the air circulation fan circuit. A panel mounted rotary dial is used to control the speed. Please note that there is a minimum setting at which the fan motor starts up when the product is switched on. -
Page 14: Htma - Manual Gas Control (If Fitted)
HTMA - Manual Gas Control (if fitted) The two gas solenoid valves are controlled by a three position switch located on the front of the product. When the switch is in the Purge position the gas flows through the Purge flow meter. This is a high flow used to purge the chamber at the beginning of the cycle. -
Page 15: Maintenance
5.0 Maintenance General Maintenance Preventive rather than reactive maintenance is recommended. The type and frequency depends on the product use; the following are recommended. 5.1.1 Cleaning The product's outer surface may be cleaned with a damp cloth. Do not allow water to enter the interior of the case or chamber. -
Page 16: Power Adjustment
Power Adjustment The control system incorporates electronic power limiting, but for the model listed in this manual the power limit is set to 100%. 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%. -
Page 17: Repairs And Replacements
6.0 Repairs and Replacements Safety Warning - Disconnection from Power Supply Immediately switch the product off in the event of unforeseen circumstances (e.g. large amount of smoke). Allow the product to return to room temperature before inspection. Always ensure that the product is disconnected from the electrical supply before repair work is carried out. -
Page 18: Temperature Controller Replacement
Control panel - HT models. Remove the screws holding the panel. Note that the panel remains connected by wiring. Do not disconnect any wiring without first making a careful note of all the connections. Internal element cover. Open the door, remove any screws holding the panel and any clips holding thermocouples in position and remove the cover. -
Page 19: Element Replacement
Element Replacement To find out whether the element failure was caused by a fault in the control circuit, operate the oven at a low temperature and check that it is functioning correctly. to replace the element, remove the rear panel and internal air guides. The element terminals are accessed from the back. -
Page 20: Fault Analysis
7.0 Fault Analysis Oven Does Not Heat Up temperature No power from Check the fuses in the supply controller is supply line The controller shows a very high temperature The temperature sensor has temperature or a controller is broken or has a wiring fault code such as EEE or --- or S.br The SSR could be failing to... -
Page 21: Wiring Diagrams
8.0 Wiring Diagrams For wiring diagrams, please contact Carbolite Gero Service. Please quote the serial number and model. -
Page 22: Fuses And Power Settings
9.0 Fuses and Power Settings Fuses F1-F2: Refer to the circuit diagrams. Fitted if supply cable fitted. Internal 38 mm x 10 mm type F fitted on Supply Fitted on board to some types EMC filter circuit board(s) Fuses of EMC filter. Fitted on board to some types 2 Amps glass type F of EMC filter. -
Page 23: Specifications
10.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Chamber Size External Dimensions Approx (mm) (mm) Temp Power Capacity Model (°C) (kW) Industrial High Temperature Ovens HTMA 1295 1215 1280 7/220 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... - Page 25 Notes Service Record Engineer Name Date Record of Work...
- Page 26 The products covered in this manual are only a small part of the wide range of ovens, chamber furnaces and tube furnaces manufactured by Carbolite Gero for laboratory and industrial use. For further details of our standard or custom built products please contact us at the address below, or ask your nearest stockist.
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