background image

Furnace drying out process

Step 1. Before the furnace is connected to the electrical supply, remove the back panel
and check for signs of moisture on the electrical circuits. If visible signs of moisture are
present then allow it to dry out in ambient temperature for at least 24 hours. If the
problem persists ensure that the furnace is isolated and contact Carbolite Gero Service
for more information.

Step 2. Complete the Installation 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
with basic control option or programmed into the controller if an advanced control
option is fitted:

l

Ramp the setpoint temperature @ 2 °C/ minute to 100 °C and dwell for 2 hours.

l

Ramp the setpoint temperature @ 2 °C/ minute to 300 °C and dwell for 3 hours.

l

Ramp the setpoint temperature @ 3 °C/ minute to 1100 °C and dwell for 1 hour.

l

Cool naturally to ambient temperature.

l

Furnace drying out process is complete.

31

10.0   Specifications

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...

Reviews: