Carbolite HTF 18/15 Installation, Operation & Maintenance Instructions Manual Download Page 2

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1700-1800° Chamber

YMBOLS

& W

ARNINGS

1.1 Switches and Lights

Supply Light: when the furnace is connected to the electrical supply the
light in the adjacent switch glows

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

MF22

Summary of Contents for HTF 18/15

Page 1: ...nnected to the electricity supply CONTENTS Section page 1 0 Symbols Warnings 2 2 0 Installation 3 3 0 Operation 5 4 0 Maintenance 8 5 0 Repairs Replacements 8 6 0 Fault Analysis 12 7 0 Circuit Diagram...

Page 2: ...glows 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 DA...

Page 3: ...there is free space around the furnace Do not obstruct any of the vents in the case there are cooling fans in the case which must not be obstructed Ensure that the furnace is placed in such a way that...

Page 4: ...nual In some models supply cables are fitted as are internal supply rated fuses The cable may be directly wired to an isolator or fitted with a line plug The supply point must be within reach of the f...

Page 5: ...d Find and correct the cause before resetting the overtemperature controller according to the instructions supplied To switch the furnace off set the Instrument switch to off The case cooling fans rem...

Page 6: ...hearth can be protected from abrasion if required by the provision of a secondary plate This consumable item can either be in light weight ceramic fibre or in dense hard wearing alumina refractory 3...

Page 7: ...by a calibration test or by comparing the output with a new reference thermocouple which has been subjected to high temperatures for a minimum length of time Failure to check the thermocouple may res...

Page 8: ...ont 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 spare...

Page 9: ...rately Before commencing any major repairs we recommend reference to the European Ceramic Fibre Industry Association Bulletin No 11 and the UK Health and Safety Executive Guidance Note EH46 We can pro...

Page 10: ...ponents and the support system appropriate to your furnace There are also variations in the positions of the braids which connect the elements the rule is that for single phase all elements are in ser...

Page 11: ...ler clips do no require clip tool Element Data distance from top of element clamp to top of element RHF 17 3 RHF 17 10 32mm RHF 17 25 HTF 18 3 47mm HTC 18 8 45mm HTF 18 15 40mm HTF 18 27 40mm Element...

Page 12: ...controller may be faulty or not receiving a supply due to a faulty switch or a wiring fault The SUPPLY light is OFF Check the supply fuses and any fuses in the furnace control compartment B Furnace O...

Page 13: ...ansformer may be fitted 2 Door actuator circuits may differ from the example shown 7 2 Three Phase Models Each set pair of elements has its own transformer controlled by a thyristor complete with thyr...

Page 14: ...1700 1800 Chamber 14 MF22...

Page 15: ...troller OP Hi should be 100 for all models The thyristor stacks are set to the secondary element maximum currents given in the table TABLE OF FUSE AND CURRENT LIMIT VALUES Model Phases volts supply fu...

Page 16: ...g the details below UK Office Keison Products P O Box 2124 Chelmsford Essex CM1 3UP England Tel 44 0 330 088 0560 Fax 44 0 1245 808399 Email sales keison co uk Please note Product designs and specific...