TM 1-1520-240-MTF2-55ENGINE RUN UP 1-14.CAUTIONIf the heater is operating, set the HEATERswitch to VENT BLOWER ONLY and allow twominutes for the heater to purge. Thisprocedure will prevent a possible heater firewhen generator power is lost in the followingtests.1. HEATER switch — OFF. Allow 2 minutes withHEATER switch in VENT BLOWER ONLY ifheater has been in operation.2. Generators — Check operation.a. Generator-rectifier, crosstie operation —Check as follows:(1) NO. 1 GEN switch — OFF. Check theNO. 1 GEN OFF caution light comes onand the NO. 1 RECT OFF caution lightremains off. NO. 1 GEN switch —TEST. Check that the NO. 1 GENcaution light goes out. NO. 1 GENswitch — ON. Check that the NO. 1GEN OFF caution light is out.(2) Repeat step (1) for NO. 2 GEN.b. Underfrequency cutoff — Check as follows:O (1)712 EAPS ENG 1 and ENG 2 FANswitches — OFF.(2) 712 ENG BEEP TRIM switch (No. 1 &2) — Full decrease.(3) ENGINE COND lever No. 2 —GROUND.
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