130 Chadwick-Helmuth Company, Inc.
Chapter 6 - Maintenance
Finishing Up -
Finish the cleaning operation, as follows:
1. Using a moist cloth and mild detergent, clean the face of the
instrument. To add more protection to the instrument, the user may
apply a light film of Armor All to the control subpanel.
2. Blow out any dirt in the interior of the chassis.
3. Ensure the unit is dry before reassembly.
6.3.5 Testing
We recommend that the user perform a yearly function test end to end, on
the Vibrex 2000 and Vibrex 2000 Plus. If the readings obtained during
this test are within the unit’s specifications for that reading in frequency,
amplitude, and phase, then the unit is operating correctly. If not, then the
unit may need servicing.
6.3.5.1 System Testing Using Model 11 Calibrator
The Model 11 Calibrator may be used to perform an end to end check of
the Balancers system as follows.
1. Using Calibrator Model 11, 11B, or 11/11PS install two velocimeters,
one on each side of the Calibrator using the 1/4 - 28 threaded holes
provided.
NOTE: In order for the calibrator to displace the velocimeters
accurately, BOTH velocimeters must be installed, or alternately, a
mass equal in weight to the velocimeter must be placed opposite the
velocimeter being tested.
2. Connect the Velocimeter to the Balancer channels 1 and 2.
3. Insert a magnetic pickup in the 5/8 - 18 threaded hole until the tip of
the magnetic pickup just touches the “interrupter” screws, then back
off one flat and tighten the jam nut.
4. Connect the magnetic pickup to channel A of the Balancer.
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