Arsenal FU 321M, Operating And Maintenance Manual, Page: 20 / 64

OPERATING AND MAINTENANCE MANUAL FU 321M 17
SELECTION OF SPINDLE ROTATION SPEED
Each one of 18 speeds is selected by relevant to the desired speed combination
positioning of handles 1, 2 and 4 which are shown on the graphic panel scheme
/ Fig.9 /.
To facilitate the selection of desired speed, press the push - button 3 / Fig.9 /
as you have the handle shiften from its fixed position and slight turning the handle.
Do not change the spindle speed during machine operation.
SELECTION OF FEED RATE
Choise of desired feed is achieved by handle for feed reference potentiometer 53
/ Fig.3a /.
SELECTION OF LONGITUDINAL FEED
The manual longitudinal feeds are effected by handwheels 3 and 21 / Fig.3 / and
the automatic ones - by the handle 4 / Fig.3 /.
SELECTION OF CROSS AND VERTICAL FEEDS
Manual feed in cross and vertical direction is accomplished by handle 1
/ Fig.3 /. Remove the handle from the machine before putting on the automatic
feed and the rapid traverse.
The automatic table feed in cross direction is realized by handle 15 and in vertical
- by handle 17 / Fig.3 /.
COOLING OF THE TOOLS
Turn the switch "Coolant On/Off" /Pos.44, Fig.3a / in position "ON".
DRIVE UNITS ACTIVATING
The feed drive operation in cutting mode or at rapid traverse can be performed
with or without spindle rotation. The direction of spindle rotation is chosen by
"Spindle Off/Fwd/Rew" Switch 47 / Fig.3a /. Position "FWD" corresponds to the
spindle rotation counter-clockwise, facing the spindle. "REW" means clockwise
spindle rotation.
Main drive is activated by pressing of button "Start" / Pos.49, Fig.3a /, thus the
circuits for feed motion and coolant pump are prepared for work.