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5.0   Maintenance

5.0

Maintenance

5.1

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. Do not clean with organic solvents.

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.

5.2

Calibration

After prolonged use, the controller and/or thermocouple may require recalibration. This
is important for processes that require accurate temperature readings or for those that
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.

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 be diagnosed and the necessary parts to be despatched.

In all correspondence please quote the serial number and model type given on the
rating label of the product. The serial number and model type are also given on the
back of this manual when supplied with the product.

Carbolite Gero Service and Carbolite Gero contact information can be found on the back
page of this manual.

5.4

Recommended Spare Parts and Spare Parts Kit

Carbolite Gero can supply individual spare parts or a kit of the items most likely to be
required. Ordering a kit in advance can save time in the event of a breakdown.

Please consult Carbolite Gero's Sales Department for details of recommended spare
parts.

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Summary of Contents for EVT 12/150B

Page 1: ...Installation Operation and Maintenance Instructions 1200 C E Range Tube Furnace EVT Model 150mm No Controller EVT 12 150B No Controller MEN EVT12150B 005_NOCTRL 30 01 2018...

Page 2: ...stand 9 2 3 3 Figure Mounting the furnace onto the vertical stand 9 2 3 4 Figure Tube furnace positioned horizontally on the stand 10 2 3 5 Figure Tube support 11 2 3 6 Figure Tube support assembled 1...

Page 3: ...6 1 Safety Warning Disconnection from Power Supply 21 6 2 Safety Warning Refractory Fibre Insulation 21 6 3 Temperature Controller Replacement 21 6 4 Solid state Relay Replacement 22 6 5 Thermocouple...

Page 4: ...to the elements Heat switch the switch disconnects power to the heating elements unless this switch is OFF there is a danger of electric shock when inserting objects into the product 1 2 General Warn...

Page 5: ...ork tube adaptors or it could be possible for an operator to access electrically live element coils that could cause serious injury or death 8 Warning label Switch off the furnace before loading and u...

Page 6: ...ements are ener gized 4 Product rating label indicating the product serial number and electrical information 5 Access holes to front panel fixing 6 Warning label Disconnect the mains supply before rem...

Page 7: ...quipment 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 Ensure that t...

Page 8: ...stand upright to the base using the 6 x M6 dome cap screws 4 and wash ers 3 supplied l Partially screw in the top M6 screw knobs 2 x 6 into the frame upright as shown in 2 3 3 l Hook the furnace onto...

Page 9: ...bling the stand Index to numbered items in Figure 2 3 2 and Figure 2 3 3 1 Vertical stand base 2 Vertical stand upright 3 Fixing screws M6 x 16 dome cap screw 4 Washer M6 5 Tube furnace 6 M6 screw kno...

Page 10: ...t the work tube with the furnace in the horizontal position as shown in figure 2 3 4 To fit the work tube in a vertical orientation follow the steps below Omit the use of the end seal if not required...

Page 11: ...using item 6 until the tube is secure enough for use in a vertical arrangement Fitting arrangement is shown in figure 2 2 l Figure 2 2 shows an exploded view of all the required parts l Figure 2 2 sh...

Page 12: ...Installation 2 3 7 Figure Tube support and end seal 2 3 8 Figure Tube support and end seal assembly For extra stability of the tube repeat the assembly instructions above as shown in figure 2 3 82 3 9...

Page 13: ...ounting frame It is the customer s responsibility to carry out a risk assessment on the siting and mounting of the furnace and to ensure that it is operated in a safe manner see section 2 2 for the re...

Page 14: ...Alignment of radiation shields is similar to that of insulation plugs see below If a metal work tube is being used in the furnace ensure that it is earthed See the safety warning in section 4 4 2 4 2...

Page 15: ...ernal supply fuses in which case customer fusing is preferred but not essential See section 9 0 for furnace rating power current and fusing information The external connection should be either a perma...

Page 16: ...3 0 Temperature Controller 3 0 Temperature Controller If this product is fitted with a temperature controller instructions are provided separately 16...

Page 17: ...ct will start to heat up The Heat light s glow steadily at first and then flash as the product approaches the desired temperature or a program setpoint Over Temperature option only If the over tempera...

Page 18: ...item 2 in Warning Labels when the furnace is being loaded or unloaded The work tube can become electrically conductive at high temperatures If an element has failed and collapsed onto the work tube t...

Page 19: ...The controller can be set to limit both the heating and cooling rate 4 6 Pressure Work tubes are not able to accept high internal pressure When gas seals or similar fittings are in use the gas pressur...

Page 20: ...etermine whether full calibration is required Carbolite Gero can supply these items Depending on the controller fitted the controller instructions may contain calibration instructions 5 3 After Sales...

Page 21: ...red 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...

Page 22: ...nnections Thermocouple cable colour codings are thermocouple leg colour positive type N pink negative white Disconnect the thermocouple from its terminal block Carefully withdraw the thermocouple from...

Page 23: ...may not be fitted If any fuse has failed it is advisable for an electrician to check the internal circuits Replace any failed fuses with the correct type For safety reasons do not fit larger capacity...

Page 24: ...a low temperature The door switch es if fitted may be faulty or need adjustment The contactor relay if fitted may be faulty The heater switch if fitted may be faulty or need adjustment The SSR could b...

Page 25: ...shows a low temperature The thermocouple may be faulty or may have been removed out of the heating chamber The thermocouple may be connected the wrong way around The controller may be faulty 2 Produc...

Page 26: ...safety switch es Key F1 F2 F3 Fuses FIL Filter R1 1 R1 2 Relay Contactor R1 Relay C Temperature Controller TC Control Thermocouple SSR Solid State Relay SSW Safety Switch H Heat Lamp EL Element s SW...

Page 27: ...Filter R1 1 R1 2 Relay Contactor R1 Relay C Temperature Controller TC Control Thermocouple SSR Solid State Relay SSW A SSW B Safety Switch es H Heat Lamp EL Element s SW Instrument Switch es N Neutral...

Page 28: ...on EMC filter circuit board s F2 Auxiliary Circuit Fuses Fitted on board to some types of EMC filter May be omitted up to 25 Amp phase supply rating 2 Amps glass type F On board 20 mm x 5 mm Other 32...

Page 29: ...vered by this manual are fitted with elements designed for use over the range of voltages 200 V 240 V the power limit parameter is set according to the table below These models may be relocated to a d...

Page 30: ...le from Carbolite Gero for work tubes with outside diameters of 32 mm 46 mm and 60 mm 10 1 Environment The furnaces contain electrical parts and should be stored and used in indoor conditions as follo...

Page 31: ...ation procedure see section 2 1 Step 3 After reading the controller operation instructions heat the furnace following the temperature profile given below This will need to be done manually on furnaces...

Page 32: ......

Page 33: ...Notes Service Record Engineer Name Date Record of Work...

Page 34: ...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...

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