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§ 1066.260 Parasitic friction compensation evaluation.
(a) Overview. This section describes how to verify the accuracy of the dynamometer's friction compensation.
(b) Scope and frequency. Perform this verification upon initial installation, after major maintenance, and upon failure of a verification in either § 1066.270 or § 1066.275. Note that this procedure relies on proper verification of speed and torque, as described in §§ 1066.235 and 1066.240. You must also first verify the dynamometer's parasitic loss curve as specified in § 1066.255.
(c) Procedure. Use the following procedure to verify the accuracy of the dynamometer's friction compensation: