Gestetner B070 Service Manual page 650

FUSING
The table below describes the sequence for switching the lamps on and off to
control the fusing temperature.
NAME
Fusing Lamp A
Fusing Lamp B
Fusing Lamp C
CONDITION
Warm up, Re-load (See Note 1)
(before the hot roller temperature reaches
the hot roller idle rotation start temperature
of 140°C)
Warm up, Re-load
(after the hot holler reaches temperature
higher than the hot roller idle rotation start
temperature of 140°C)
Standby
Normal Size Paper Copying
(ON/OFF timing fixed at 1 sec. intervals)
Small Size Paper
(ON/OFF timing fixed at 4 sec. intervals)
Note 1 Re-load temperature is the temperature while the machine is idling.
Note 2 When a small paper size (smaller than A4/LTR) is selected for the job, all
three lamps remain on until the fusing unit reaches the target temperature,
then Lamp C switches off to prevent the ends of the hot roller from over
heating.
B070/B071
CÓPIA NÃO CONTROLADA
Fusing Lamp A (Center)
Fusing Lamp B (Length)
Fusing Lamp C (Ends)
WATTAGE
NA EUR/A
800 W 730 W
530 W 530 W
560 W 540 W
LAMPS
USED
6-134
CÓPIA NÃO CONTROLADA
B070D937.WMF
FUNCTION
Heats center of the hot roller.
Heats length of the hot roller.
Heats ends of the hot roller.
CONTROL SEQUENCE
A" B" C
3 ON:
(See Note 2)
2 ON: B " C
1 ON B, C Alternates
ON A " B " C
3
OFF C " B " A
ON A " B
2
OFF B " A
SM