Carbolite HTF 18 User Manual download pdf (Page 16)

MF47-3.05 16

7.0 CIRCUIT DIAGRAM

7.1 Single Phase 208V, 220-240V

thermal cutouts:

case temperature sensor

transformer temperature sensor

TC temperature controller

OTC overtemperature controller

F1 Supply fuses (present if supply cable fitted)

F2 Auxiliary circuit fuses (2A)

F4 Thyristor protection fuse (Ferraz Protistor)

BU Blue

R Red

P Pink

G Grey

GR/Y Green & Yellow

Coil

N

Elements

Contactor

BU

R

Thyr-

istor

BU

R

OTC

P

G

TC

Control

thermocouple

O/temp

thermocouple

Door

Switch

Element

Transformer

Heat

Light

Case Cooling Fans

F2

F1

GR/Y

PE

L

EMC

Filter

F4

Thermal

Cutouts

Fault Light

Instrument Switch

1 2 ... 11 12 13 14 15 16 17 18 19 20

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