Carbolite CFM Series - Manual (Page 15)

CFM
MF10 - 3.08
15
F USES & P OWER S ETTINGS
7.5 Fuses
F1-F3: Refer to the circuit diagrams.
F1
Internal
supply
fuses Fitted if supply cable fitted.
Fitted on board to some types of EMC filter. on-board and up to 16 Amps:
32mm x 6mm type F
other: GEC Safeclip
F2
Auxiliary
circuit
fuses Fitted on board to some types of EMC filter.
May be omitted up to 25Amp/phase supply
rating. 2 Amps glass type F
On board: 20mm x 5mm
Other: 32mm x 6mm
F3
Heat Light
fuses May be omitted up to 25 Amp/phase supply
rating. 2 Amps glass type F
32mm x 6mm
Customer
fuses Required if no supply cable fitted.
Recommended if cable fitted. See rating label for amperage;
see table below for fuse rating.
Model phases Volts Supply Fuse
Rating Volts Supply Fuse
Rating (type)
CFM 12/1, 12/2 1-phase 220-240 5A 110-120 10A
CFM 14/1, 14/2 1-phase 220-240 15A or 16A 110-120 30A or 32A
CFM 14/1 + Aux 1-phase 220-240 16A
CFM 14/2 + Aux 1-phase 220-240 20A
CFM 14/4 1-phase 220-240 20A 110-120 40A
Note: For technical reasons any internal fuses fitted may have a higher raing than the
recommended supply fuses.
7.6 Power Settings
The power limit settings (parameter OP.Hi ) for the 1200°C CFM models are all 100%, with the
exception of any units supplied for 254V operation where the limit is 89%.
The power limit settings for the 1400°C models are as follows. The figures represent the maximum
percentage of time that controlled power is supplied to the elements. Do not attempt to “improve
performance” by setting a value higher than the correct one from the table.
Model Volts: 110V 120V 208V 220V 230V 240V 254V
CFM 14/1 67 56 89 67 61 56 50
CFM 14/2 67 56 89 67 61 56 50
CFM 14/4 100 100 92 82
Auxiliary heater models: the power limits for the controllers for the auxiliary heaters have power
limits of 100%..