Carbolite BWF Installation, Operation & Maintenance Instructions Manual Download

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PECIFICATIONS

Carbolite reserves the right to change specifications without notice

9.1

Models Covered by this Manual

MODEL Max.

Temp.

Max.
Power

Chamber Size (mm)

Approx.
Capacity

Net
Weight

(°C)

(kW)

(l)

(kg)

Chamber furnaces heated by resistance wire inserted in refractory formers.

CWF 11/5

1100°C

2.4

135

140

250

CWF 11/13

1100°C

3.1

200

325

CWF 11/23

1100°C

7.5

235

245

400

CWF 12/5

1200°C

2.4

135

140

250

CWF 12/13

1200°C

3.1

200

325

CWF 12/23

1200°C

7.5

235

245

400

CWF 13/5

1300°C

2.4

135

140

250

CWF 13/13

1300°C

3.1

200

325

CWF 13/23

1300°C

7.5

235

245

400

Burn-off versions of the above.

BWF 11/13

1100°C

3.1

200

325

BWF 12/13

1200°C

3.1

200

325

Chamber furnaces heated by resistance wire embedded in low thermal mass
insulation.

RWF 11/5

1200°C

2.75

130

160

250

RWF 11/13

1200°C

5.0

195

210

325

RWF 11/23

1200°C

9.1

220

260

400

RWF 12/5

1200°C

2.75

130

160

250

RWF 12/13

1200°C

5.0

195

210

325

RWF 12/23

1200°C

9.1

220

260

400

9.2 Environment

The furnaces 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

MF02-3.12

5/12/00

CWF

Carbolite, Parsons Lane, Hope,

Hope Valley, S33 6RB, England.

Telephone:

(01433) 620011

Int: +44 1433 620011

Facsimile:

(01433) 621198

Int: +44 1433 621198

E-mail:

enquiry@carbolite.co.uk

For preventive maintenance, repair and calibration of all Furnace

and Oven products, please contact:

Thermal Engineering Services

Telephone:

UK: 0845 3308035

Int: +44 1433 623335

Fax:

UK: 0845 3308036

Int: +44 1433 623336

Email:

thermalserve@dial.pipex.com

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 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.

Summary of Contents for BWF

Page 1: ...ed to the electricity supply CONTENTS Section page 1 0 Symbols Warnings 1 2 0 Installation 3 3 0 Operation 5 4 0 Maintenance 6 5 0 Repairs Replacements 8 6 0 Fault Analysis 10 7 0 Circuit Diagrams 12 8 0 Fuses Power Settings 15 9 0 Specifications 16 Manuals are supplied separately for the furnace controller and overtemperature controller when fitted Please read the controller manuals before operat...

Page 2: ...lows Heat Light the adjacent light glows or flashes to indicate that power is being supplied to the elements 1 2 Warning Symbols DANGER of electrical shock read any warning printed by this symbol DANGER hot surface Read any warning printed by this symbol WARNING all surfaces of a furnace may be hot DANGER read any warning printed by this symbol 2 0 2 MF02 ...

Page 3: ...at there is free space around the furnace Do not obstruct any of the vents in the control section they are needed to keep the controls cool Ensure that the furnace is placed in such a way that it can be quickly switched off or disconnected from the electrical supply see below If the chimney is supplied unfitted then fit it into the hole in the top of the furnace case If the furnace is to be used t...

Page 4: ...ry removal of the furnace back panel Connection by line plug the plug should be within reach of the operator and should be quickly removable Connection to isolating switch this should operate on both conductors single phase or on all live conductors three phase and should be within reach of the operator The supply MUST incorporate an earth ground ELECTRICAL CONNECTION DETAILS supply type Supply Te...

Page 5: ...ting the overtemperature controller according to the instructions supplied To switch the furnace off set the Instrument switch to O If the furnace is to be left off isolate it the electrical supply 3 2 General Operating Notes Heating element life is shortened by use at temperatures close to maximum Do not leave the furnace at high temperature when not required The maximum temperature is shown on t...

Page 6: ...en levels of 1 are to be expected If a metal retort is supplied with this furnace please see the supplementary manual MS05 3 4 Operator Safety The furnace incorporates a safety switch which interrupts the heating element circuit when the door is opened This prevents the user touching a live heating element but also prevents the furnace from heating up if the door is left open Avoid burns Carbolite...

Page 7: ...del type and voltage given on the rating label of the furnace The serial number and model type are also given on the front of this booklet when supplied with a furnace To contact Thermal Engineering Services or Carbolite see the back page of this manual 4 4 Recommended Spares Kits Carbolite can supply individual spares or a kit of the items most likely to be required Ordering a kit in advance can ...

Page 8: ...Guidance Note EH46 We can provide further information on request Alternatively our service division can quote for any repairs to be carried out at your premises or ours 5 3 Temperature Controller Replacement 201 This controller is fitted to the back of the control panel in many models this can be separated from the base by removal of two screws Before handling the controller wear an anti static wr...

Page 9: ...couple cables from their terminal blocks Straighten all the element tails Note that these become brittle with use Unscrew the screws fixing the metal back piece from the inner chamber and withdraw this part backwards complete with thermocouple s and sheath s Withdraw the back insulation piece Handle with care Observe the warning on handling of ceramic fibrous insulation section 5 2 Withdraw the ol...

Page 10: ...t tails etc as for CWF section 5 6 Remember to make a plan of the connections 5 8 Door Plug Replacement Lift the furnace door to the open position and remove the door cover from the plug carrier assembly Remove the old door plug by sliding it upwards out of its carrier Slide the new plug into the carrier assembly making sure that the plug is the correct way up Refit the door cover When first heati...

Page 11: ...s glowing on the controller Æ The SUPPLY light is ON Æ The controller may be faulty or not receiving a supply due to a faulty switch or a wiring fault Æ The SUPPLY light is OFF Æ Check the supply fuses and any fuses in the furnace control compartment B Furnace Overheats 1 The HEAT light goes OFF with the instrument switch Æ The controller shows a very high temperature Æ The controller is faulty Æ ...

Page 12: ...ngle phase model 23 replaced by Universal model see 7 4 Supply light Instrument Switch coil temperature controller overtemp controller safety switch B thermocouple PE L N SSR e l e m e n t s F3 F3 safety switches A F1 F2 thermocouple if fitted Filter if fitted contactor if fitted heat on 7 2 2 phase with neutral Please enquire if a diagram is required 7 3 Higher Voltages e g 254V 440V 480V 3 phase...

Page 13: ...e n t s N L L N L N thermocouple Fuses or EMC filters Supply Terminals Circuit no 3 Circuit no 2 N L N L N L3 L2 L1 N PE L Circuit no 1 3 phase neutral A model made to this diagram can be converted by the customer between the following supply voltages between 3 phase neutral in the range 380 220V 415 240V and 3 phase delta in the range 220V 240V and single phase in the range 220V 240V 208V model c...

Page 14: ...ransformer coil temperature controller thermocouple overtemp controller thermocouple SSR heat on Supply light Instrument Switch F2 F3 if over temperature fitted safety switch 47k heat on F3 F3 heat on 47k SSR In this configuration the fuses F2 on the supply side of the transformer may be GEC Safeclip not 32 x 6mm glass as stated in section 8 1 8 0 14 MF02 ...

Page 15: ...l Phases Volts Supply Fuse Rating Volts Supply Fuse Rating CWF 5 1 phase 220 240 10A 110 120 20A CWF 5 1 phase 208 12 5A CWF 13 1 phase 220 240 12 5A 110 120 25A 32A CWF 13 1 phase 208 16A CWF 23 1 phase 220 240 30 32A CWF 23 1 phase 208 40A 208 delta 25A ph CWF 23 3 phase 380 220 415 240 12 5A ph 220 240 delta 20A RWF 5 1 phase 220 240 12 5A 110 120 25A RWF 5 1 phase 208 16A RWF 13 1 phase 220 24...

Page 16: ...1200 C 9 1 220 260 400 23 65 RWF 12 5 1200 C 2 75 130 160 250 5 28 RWF 12 13 1200 C 5 0 195 210 325 13 45 RWF 12 23 1200 C 9 1 220 260 400 23 65 9 2 Environment The furnaces 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 MF02 3 12 5 12 00 CWF Carbolite Parsons Lane...

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