Prince Tennis TENNIS BALL MACHINE #1 사용자 설명서

One can expect to get approximately 
four hours of continuous use (no breaks).
However by using lower speeds and 
turning the machine off during reloading
tennis balls, playing time may be extend-
ed to as much as six hours. Please see
accessories for options to extend playing
time.

The following are requirements to ensure
proper performance of sealed lead acid
batteries and should be followed precisely:

• Charge battery as soon as possible 

after use.

• Do not store battery in discharged

state.

• Do not store for longer than 30 days

without charging.

After

removing housing (please refer to page 
9 for housing removal), remove battery
wires, strap screws, and the battery. When
reinstalling the battery, connect the red 
battery wire to the red battery terminal, 
and the white battery wire to the oppo-
site battery terminal. Disposal: See
instructions on battery.

To charge

the battery, insert the charger plug into 
the receptacle labeled “charger recepta-
cle” on the control panel (insert into the
“Accessories Plug” on the Model #4). The
power switch must be off at this time. Be
sure to plug the charger into the machine
first and then into the outlet. If the stan-
dard charger is plugged in for longer than
48 hours the charger will cause perma-
nent damage to the battery. 

The optional float charger can be pur-
chased as an accessory. The float charger
is designed to allow continuous charging
without causing damage to the battery. 

A red light will illuminate on the charger
indicating that it is charging. A green light
will come on when the battery is 100%
charged.  At this point, the charger enters
a float charge, to prevent the possibility
of overcharging. It is recommended to
leave the charger plugged into the
machine and plugged into the outlet
when the machine is not in use. 

To practice the proper

form for ground strokes or volleys, raise
the elevation height three feet above the
net.  Turn speed and feed knobs to “4”
with spin dial in the “0” position. To prac-
tice forehand and backhand, turn sweep
switch to the “On” position.

For intermediate

play, raise the elevation height approxi-
mately two feet above the net.  Turn on
the speed and feed knobs to “5” with the
spin dial turned to “3” either way (back-
spin or topspin). To practice forehand or
backhand, turn sweep switch to the “On”
position.

For deep and hard ground

strokes or volley, raise the elevation height
six to twelve inches above the net. Turn the
speed and spin dial fully clockwise.  At full
speed you will have to bring the machine
back a couple of feet past the baseline
similar to the positioning of a higher level
player.  For intense workout, turn sweep
switch to the “On” position.

Position the ball machine

to throw balls down the center of court.
Adjust the elevation height up for lobs 
(or use attachable lob enhancer) and turn
down the ball feed.  Practice hitting lobs
at each corner.

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