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Summary of Contents for VERDER CARBOLITE GERO RHF 15/15
- Page 1 Installation, Operation and Maintenance Instructions 1500 °C Rapid Heating Furnace - RHF Model: 15 Litres No Controller RHF 15/15 + No Controller MEN-RHF1515-005_NOCTRL (29-10-2021)
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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 - Refractory Fibre Insulation Temperature Controller Replacement Solid-State Relay Replacement Fuse Replacement Thermocouple Replacement Element Fitting and Replacement 7.0 Fault Analysis Furnace Does Not Heat Up Product Overheats 8.0 Wiring Diagrams WA-33-30 WA-33-31 9.0 Fuses and Power Settings Fuses Power Settings User Power Setting Adjustments...
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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. Heat light: the adjacent light glows or flashes to indicate that power is being supplied to the elements. General Warnings DANGER –... -
Page 5: Prerequisites To Use
1.3 Prerequisites to Use Prior to the commissioning and use of this product, all personnel involved in its installation, operation and maintenance must be deemed competent and have: Read and understood the information contained within this manual Received the relevant training with regard to safety and operation of the product Been provided with the appropriate PPE (Personal Protective Equipment) required for the safe operation of this product Note: The customer is responsible for ensuring that all of the above conditions are... -
Page 6: Installation
2.0 Installation Unpacking and Handling 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. -
Page 7: Chimney
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. -
Page 8: Heating Elements
Duct (75mm-150mm diameter) Ambient air is drawn into duct Chimney 25mm vertical gap between chimney and duct Heating Elements The silicon carbide elements are VERY FRAGILE and are packed separately. Fit them accordingly to the instructions in section 6.0 for element fitting and replacement instructions. -
Page 9: Technical Notes
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 Types Supply Terminal Label Cable Colour Reversible or Live- Live - Neutral... -
Page 10: Temperature Controller
3.0 Temperature Controller If this product is fitted with a temperature controller, instructions are provided separately. -
Page 11: Operation
4.0 Operation Operating Cycle This product is fitted with an instrument switch which cuts off power to the control circuit. Connect the product to the electrical supply. Turn on the instrument switch to activate the temperature controllers. The controllers illuminate and go through a short test cycle. Over-Temperature option only. -
Page 12: Use Of Probes And Metal Sheathed Thermocouples
Materials such as case hardening compounds and other reactive salts may penetrate the furnace chamber lining and attack the wire elements, causing premature failure. Use of a hearth tile may be advisable: please consult the Carbolite Gero technical department. Use of Probes and Metal Sheathed Thermocouples Any metal object used to probe into the product chamber while the product is connected to the electrical supply must be earthed. -
Page 13: Operator Safety
This option is ideal for processes which can create acids, water, fumes or aggressive gases that can react with and damage the heating elements. The addition of the heating element protection tiles option reduces the width of the internal chamber and the maximum operating temperature. Please refer to the "Specifications"... -
Page 14: 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. Maintenance Schedule CUSTOMER QUALIFIED PERSONNEL DANGER! ELECTRIC SHOCK. Risk of fatal injury. Only electrically qualified personnel should attempt these maintenance procedures. Frequency Maintenance Method... - Page 15 Check that all functions are working nor- Operational Check mally Thorough inspection and report incor- Operational Check porating a test of all functions Performance Element Circuit Electrical measurement Measure the current drawn on each Power Consumption phase / circuit Hearth Visual check for fit and damage Check whether the cooling fans are work- Cooling Fans (if fitted)
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Page 16: Cleaning
5.2.1 Cleaning Soot deposits may form inside the furnace, depending on the process. At appropriate intervals remove these by heating as indicated in the General Operation Notes. 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. Do not clean with organic solvents. -
Page 17: After-Sales Service
use the product close to its maximum temperature. A quick check using an independent thermocouple and temperature indicator should be made from time to time to determine whether full calibration is required. Carbolite Gero can supply these items. Depending on the controller fitted, the controller instructions may contain calibration instructions. -
Page 18: Power Adjustment
Please note: it is not possible to use the cold resistance of the element as a measure of ageing as the cold resistance is not an accurate indicator of hot resistance. Hot resistance is used to calculate furnace power. See the controller instructions for how to adjust the controller. Always record the setting when first making an adjustment. -
Page 19: 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 20: Solid-State Relay Replacement
Solid-State Relay Replacement Disconnect the product from the power supply and remove the appropriate cover as given above. 1. Make a note of the wire connections to the solid state relay, then disconnect them. 2. Remove the solid state relay from the base panel or aluminium plate. 3. -
Page 21: Element Fitting And Replacement
Element Fitting and Replacement See section 6.2 - wearing a face mask is required. Replacements: see section 5.7. If at any time the power limit has been increased, reset it to its original value (see section 9.0 at the back of this manual for the original value). New elements must not be mixed with aged elements. - Page 22 Remove the furnace back panel to gain access to the element connections. Remember that the elements are fragile and expensive and that they can be damaged by contamination; handle them with care and keep them clean. Replacements: make a note of the actual braid and cable connections to the elements.
- Page 23 Remove the two centre braids and carefully place them aside. Disconnect the four end braids and bend them out of the way. Carefully remove the old elements from the furnace. Avoid damaging the insulation as this can be hazardous to your health if inhaled. Refer to section 2.1...
- Page 24 Carefully insert the new elements into the furnace. Position elements so that the split along the length is vertically positioned. Attach the braids according to the notes made, or according to the appropriate diagram below. Ensure the element braids are positioned so that they do not touch each other, and are clear of the back panel when it is re-fitted.
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Page 25: Fault Analysis
7.0 Fault Analysis Furnace Does Not Heat Up The HEAT The heating element Check also that the SSR is light is ON has failed working correctly The HEAT The controller shows a The thermocouple has broken or light is very high temperature has a wiring fault or code such as S.br The controller shows a... -
Page 26: Product Overheats
Product Overheats Product only heats The controller up when the shows a very high The controller is faulty instrument switch is temperature The thermocouple may be The controller faulty or may have been shows a low removed out of the heating temperature chamber The thermocouple may be... -
Page 27: Wiring Diagrams
8.0 Wiring Diagrams WA-33-30 Connections below show 3-phase +N with indirect safety switches. F1, F2, F3 Fuses Filter (if fitted) Controller Control Thermocouple Cables Relay Blue R1/1, R1/2, R1/3 Relay contactor Instrument Switch(es) Black Safety Switch GR/Y Green + Yellow Element Grey Solid State Relay... - Page 28 WA-33-31 Connections below show 3-phase +N with indirect safety switches and over- temperature control. F1, F2, F3 Fuses Filter (if fitted) Controller Control Thermocouple Over-Temperature Controller Cables Over-Temperature Thermocouple Blue Relay R1/1, R1/2, R1/3 Relay contactor Black Instrument Switch(es) GR/Y Green + Yellow Safety Switch Grey...
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Page 29: Fuses And Power Settings
9.0 Fuses and Power Settings Fuses F1- F3: 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. -
Page 30: User Power Setting Adjustments
User Power Setting Adjustments Date % Power Comments Note: If a new set of elements are fitted then return the power settings to the original value. Please refer to the rating label for product specific information. -
Page 31: Specifications
10.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Approx Chamber Size Temp Power Capacity Weight Model (°C) (kW) (kg) Chamber furnaces heated by silicon carbide elements RHF 15/15 1500 10.0 with SiC Protection Tile 1400 10.0 Option 10.1... - Page 33 Notes Service Record Engineer Name Date Record of Work...
- Page 34 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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