Econo-Wrap EW-450A, Operator'S Manual, Page: 11 / 22

The overload valve adjustment
If during operation we determine no smoothness of operation, machine jerking, one should carry out the
adjustment of the overload valve. When adjusting hydraulic hoses must be connected to the installation of the
tractor.
Adjustment is carried out by means of the adjusting screw marked with the symbol 50 located on the left
side of the valve. After removing/unscrewing the plastic cover, loosen the counter nut. After unlocking the bolt by
unscrewing it, we increase the smoothness of machine operation. After each half turn of bolt, tighten up the
counter nut and check the effect of adjustment.
Attention!
Do not adjust the valve unnecessarily. When adjus ng, please take special care during each star ng/ run of the ma ‐
chine.
Film width Adjustment
The
EW-
450
A
is intended to bale wrapping with two types of the film about widths 20” and 30” . To adapt
the machine to wrap another available type of film, one should:
Film Rollers
Adjust the height of the pressure of upper film by changing the height of the locking pin
Roller Rotatonal Chain
Change the position of the chains driving the rotating drums – respectively for the film 20” on z-34 gears /
toothed wheels and for film 30” on z-23 gears / toothed wheels . The length of the chains should be changed
using the appropriate half-chain link. The gears are located behind the shield on the back of the Bale Tray.