Epson SQ-B50/2550 Technical Manual page 131

REV.-A
2.4.3.1 Pump Motor
Pumping, capping, and brushing is fully driven by a pump motor (P motor). As rotation of the P motor
is transmitted to the P drive gear, then the pump pin plate, the cap clutch can and cleaner drive gear
all operate accordingly. Every operation of pumping, capping, and brushing is respectively provided.
Pump Motor Specifications
Type:
Specifications
Rated voltage:
Starting torque:
Rated torque:
Rated speed:
Coil resistance:
DC motor
24VDC
±
10%
More than 180 g-cm (at 200, 21.6V)
30 g-cm
3800 rpm
60 ohms
Pump pin plate
I
Pumping
I
Cap clutch cam
[ Capping
I
~ ~ ~~::=:::!.....~
Pump motor
Brush gear
~~
Figure 2-75. P Motor Power Transmission
Table 2-7. Rotation of P Motor and Movement of Others
P motor drive direction CCW CW
Pump operation Draws ink from head, disposes to ink cartridge.
Cap operation Close Open
Brush operation Rotation
Stop
2-63