GAMMA 7000 Es STRINGING MACHINE (Issue 3 - March 29, 1999) - Manual (Page 12)

10
STRINGING THE FRAME
String Gripper Operation
To insert the string in the split drum string
gripper, wrap the free end of the string
clockwise around the gripper drum and po-
sition the string between the gripper jaws as
shown in the illustration.
The string must pass over the top half of the
gripper before being placed between the
diamond coated plates of the upper and
lower gripper jaws. Excessive slack in the
string should be removed before applying
tension. As the drum turns and applies ten-
sion to the string, the upper jaw is forced
down to clamp the string between the jaws.
Fixed Clamp Operation
The fixed clamps supplied with your GAMMA
7000Es are of a dual action design. The
string clamp and the clamp base operate
independently of one another.
To clamp a string, lift the clamp head and
place the string between the jaws. Depress
the clamp head lever to secure the string.
The clamping pressure applied to the string
should be adjusted to provide sufficient pres-
sure to secure the string when subjected to
the desired pulling tension. The diamond
coated gripper plates provide for increased
friction between the clamps and the string to allow for reduced clamping pressure while securing
and holding the string under tension.
Fixed Clamp Operation
Rotate the winged lock knob clockwise to
secure the clamp base to the turntable.
Reverse the clamping procedure to unlock
the string clamp.
The winged lock knob should be tightened
enough to prevent clamp base slippage on
the turntable, when the desired tension is
placed on the string. To go from the loose
position to the clamped position and back,
generally requires about 1/2 to 3/4 quarters
of a turn. Although when stringing at ex-
tremely high tensions, additional tightness
may be required. Note: If the string slips in the string clamp while tensioning, adjust the
gap between the clamp jaws as per the instructions on page 14.