Page 3-13
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE
Effective
09/2005
TRANSDUCER REMOVAL
• The transducers are held in place with setscrews and
jam nuts.
• Disconnect the power from the rear of the machine.
• Remove the display panel.
• Remove the weight tray.
• Using a 2.5mm hex key remove the preload plate.
(Figure 3-18)
• Using a 13mm wrench loosen the jam nut.
• Using a 5mm hex key, back the set screw off by
turning counterclockwise. (Figure 3-19) Do not lose
the ball bearings on each end of the tranducers.
These allow the transducer to center easily on the
vibratory member.
• If the transducer is being replaced using a marker
mark the front and rear transducer harnesses. Cut the
two wires at the transducer. The positive lead of the
harness is marked with a black band. (When using a
harness and transducer assembly, this step is unnec-
essary.
INSTALLATION OF TRANSDUCER
• The front and rear transducer must be installed
correctly in order for the balancer to function correctly.
(Figure 3-19). The rear transducer uses the last 2
wires pins 15-16 in the harness.
• Connect the positive and negative lead to the trans-
ducer. The positive lead is marked with a black band.
• Insert the clip into the transducer firmly snapping it
into place. Once the wire is installed it cannot be
removed without destroying the transducer.
• Apply a small amount of grease to each end of the
transducer. Place the ball bearings in place on the
transducer. Place the transducer assembly in the
vibratory system.
• Finger tighten the set screw to position the transducer.
The wire connection should be on the bottom. A
properly installed transducer will be able to rotate
freely but must have
no
side to side motion.
• Snug the jam nut that holds the setscrew. This nut
should be tightened solidly, but need not be extremely
tight. Recheck the transducer to ensure that no lateral
movement exists after tightening the jam nut. Adjust
as necessary.
• Hold the pre-load plate in position up to the jam nut
and finger tighten the set screws to just hold
the plate in place without movement. Tighten the upper
screw ½ turn, then tighten the lower screw one full
turn, then tighten the upper screw an additional ½ turn.
• Reassemble the complete balancer and perform a
complete factory calibration to ensure proper opera-
tion.
NOTE:
MOVING THE TRANSDUCER AFTER CALI-
BRATION WILL CHANGE THE ACCURACY
AND REQUIRE FACTORY CALIBRATION
Rear Transducer
Front Transducer
Encoder
Set Screw
Set Screw
Figure 3-18
Figure 3-19
