Owner's manual

POWER
POSITIONER
Figure 4-4. Linear Linkage Calibration
b. Characterized. Use installation plans to verify
angles and lengths of actual iastallation. If
installation plans for the linkage are unavailable,
refer to paragraph 26.1 for procedure to
calculate correct angles and lengths. Use the
following procedure to measure aad adjust
characterized linkage @gore 4-5).
1. Measure angle p, fmm vertical centerline, to
power positioner’s operating lever (Figure
4-5). This is power positioner offset.
2. Meame. angle b2 from vertical centerline of
device being controlled to driven lever. Thii
is driven lever’s offset.
POSITIONER
I-
Figure 4-5. Characterized Linkage Calibration
3. Measure length (I) between connecting
levers at clevis.
4. Measure lengths of drive lever (R,) and
driven lever (Rb.
5. Compare angles &, 8, distance (Q, and
lengths R, and Rz with design for your
system. Adjust angles and linkage length as
necessary. Adjust length of linkage (P) by
threading pipe in or oat of clevis for minor
adjustments, or changing operating arm
angle b, for major adjustments.